Integrated Summary US- Food Biochemistry: Composition and Main Functions

1-Food Chemistry – Food chemistry studies the chemical the chemical composition, functional properties, and chemical reactions that occur the handling, processing, and storage of food.

Macronutrients: Carbohydrates: provide quick energy (4 kcal/g) and are classified as mono-, di-, oligo- and polysaccharides. Proteins: have structural and metabolic functions, made up of amino acids, and classified according to their structure (primary to quaternary) and form (globular or fibrous). Lipids: have high energy density (9 kcal/g) and are a source of essential fatty acids and fat-soluble vitamins.

Micronutrients: Vitamins: water-soluble and fat-soluble. Minerals: electrolytes, macro elements, and micro elements.

Functions of food: Energy-providing (carbohydrates, fats, proteins) Body-building (proteins) Regulatory (vitamins and minerals)

Carbohydrates: Classification and Functional Properties

Classification: Monosaccharides: glucose, frutose, galactose. Disaccharides: sucrose, lactose, maltose. Polysaccharides: starch (plant storage), glycogen (animal storage), fiber (soluble and insoluble).

Functions in food: Serve as an energy source and help regulate protein metabolism. Contribute to structure, texture, and flavor (caramelization, preservation). Prevent ketosis in balanced diets.

Starch gelatinization: Heating breaks hydrogen bonds, allowing water absorption and forming a viscous paste – important in baking and sauce preparation.

Non-enzymatic browning (Maillard reaction): Reducing sugar + proteins → compounds responsible for color and flavor, widely used in the food industry for coloring and aroma development.

Lipids: Concept, Properties, and Deterioration

Classification: Simple lipids: oils and fats. Compound lipids: phospholipids, lipoproteins. Derived lipid: fatty acids, sterols.( Fatty acids, basic unit: Saturated: solid, from animal sources; mono- and polyunsaturated (ω-3 e ω-6). Trans fats: produced through hydrogenation, associated with health risks.

Functions: Provide texture, flavor, and satiety; transport vit A,D,E and K: serve as energy reserves; and provide thermal and mechanical protection. In gastronomy: Lipids affect the texture, appearance, melting behavior, and physical and chemical stability of foods.

Deterioration: Lipolytic rancidity: Triglicerid + 3 H2O—Lipase — > Glicerol + 3 Acid Graxe free (off flavor) release of free fatty acids. Oxidative rancidity: formation of unpleasant odors and toxic compounds, accelerated

by light, heat, and oxygen.

Proteins: Concept and Importance

Structure: Polymers composed of about 20 amino acids, essential- Valine, isoleucine, leucine, methionine, threonine, histidine, Phenylalanine, Lysine, Tryptophan. Non – essential Serine, Alanine, Cysteine, Proline, Asparagine, Aspartate, Glutamine, Glutamate, Arginine, Tyrosine, Glycine.

Biological functions: Structural (collagen), enzymatic, hormonal (insulin), contractile (actin/myosin), transport (hemoglobin), defense (antibodies), storage, and protection.

Denaturation: Changes caused by temperature, pH, pressure, or agitation alter solubility, texture, and digestibility. Sometimes desirable (e.g., formation of the gluten network in bread).

Functional properties: Hydration: water absorption and retention. Surface activity: emulsification, foam formation flavor retention. Hydrodynamic properties: elasticity, viscosity, gel formation, texturization

Culinary applications: Egg and milk proteins act as gelling, emulsifying, foaming, and thickening agents in breads, cakes, sausages, whipped creams, sauces and other products.

2- Vitamins and minerals – Micronutrients ( vitamins and minerals) are essential for the body, as they participate in metabolic reactions, defense, tissue formations, and maintaining bodily balance. Vitamins, fragile organic compounds, can be destroyed by light, heat, and processing; minerals, instead, being inorganic, are involved in acid-base balance, enzyme function, muscle contraction, and bone formation.

Fat-soluble vitamins - Vitamin A (retinol and carotenoids) is found in liver, milk, carrots, and dark green leafy vegetables. It is important for vision, for the health of the skin and mucous membranes, for the immune system, and for normal growth. Vitamin D (calciferol) is obtained from sun exposure and from foods like milk and fish. It is essential for the health of bones and teeth, because it promotes the absorption of calcium and phosphorus and contributes to the proper functioning of the immune system. Vitamin E (tocopherol) is present in vegetable oils, nuts, and peanuts. It acts as a powerful antioxidant, protects cells, supports the immune system, promotes skin health, and also helps relieve pain thanks to its anti-inflammatory action. Vitamin K (phylloquinone) is found mainly in leafy green vegetables. It is essential for blood clotting and also contributes to bone health.

Water-soluble vitamins – B1 (thiamine) – found in pork. It is essential for the proper functioning of nervous system and for heart health. B2 (riboflavin) -found in meat, milk and eggs. It is important for energy production. Vitamin B3 (niacin)- found in meat. It helps in tryptophan synthesis, helps control cholesterol, supports adrenal gland functions, regulates appetite, and promotes the health of the skin and nervous system. Vitamin B8 (biotin)- found in eggs, liver, peanuts, tomatoes, and strawberries. It supports the metabolism of carbohydrates, fats, and proteins. Vitamin B5 (pantothenic acid) – found in avocado, legumes, and mushrooms. It is essential for adrenal hormone synthesis and promotes wound healing. Vitamin B6 (pyridoxine) – found in chicken, fish, bananas, and whole grains. It aids in the production of neurotransmitters, in the formation of blood cells, and in the proper function of the nervous and immune systems. Vitamin B9 (folic Acid) – found in green vegetables, liver and fortified cereals. It is essential for DNA synthesis, the formation of red blood cells, the prevention of megaloblastic anemia, and development of the fetal nervous system. Vitamin B12 is found in foods of animal origin. It is required for the production of red blood cells and for the synthesis of DNA and RNA. Vitamin C (ascorbic acid) – found in citrus fruits. It enhances iron absorption, has antioxidant action, participates in collagen synthesis, and strengthens the immune system.

Minerals- Sodium and chloride- found in salt; they regulate the body's fluid balance. Potassium- present in fruits, vegetables, and greens; essential for muscle function. Calcium- abundant in dairy products and green vegetables; important for bones. Iron- found in meat and legumes; essential or blood. Magnesium- important or transporting substances across cell membranes and for controlling metabolism; found in grains, nuts, and seeds. Phosphorus – participates in collagen synthesis.

Vegetables are the edible parts of plants – leaves, stems, roots, tubers, flowers, fruits, and seeds. They are rich in fiber, vitamins, and minerals, and they promote digestion, satiety, and detoxification. They contain little protein and fat; the most variable component is carbohydrates ( starch, sugar, and fiber such as pectin). Most common vitamins: vit C, carotenoids, B-complex vitamins. Most common minerals: iron, calcium, magnesium, potassium. Vegetable structure consists of cells with walls rich in cellulose, hemicellulose, and pectins, which determine texture. After harvesting, vegetables begin to deteriorate: enzymes soften tissues, oxidation causes darkening, nutrients are lost. Classification is based on the plant part consumed: Leaves: lettuce, cabbage, Flowers: broccoli, cauliflower (contain oxalic acid, sinigrin); Fruits: zucchini, tomatoes; Bulbs: garlic (allicin), onion (phytic acid); Stems, roots, tubers.

Cereals - cereals (rice, wheat, corn, oats, etc) are grains rich in complex carbohydrates (starch) that provide long-lasting energy. They also contain proteins (such as gluten in wheat, barley, oats, and rye), small amounts of fats, fiber, and minerals. A cereal grain consists of the pericarp, the aleurone layer, the endosperm, and the germ (the most nutritious part). Whole grains keep their outer layers and therefore retain fiber, vitamins, and minerals. Starch can undergo: Gelatinization (porridges, creams ) Dextrinisation (toasting, roasted flour).

Legumes (beans, lentils, peas, soybeans, chickpeas, peanuts) are rich in plant proteins, carbohydrates, and fiber. They also contain minerals, B-complex vitamins, and phytochemicals such as saponins. They contain oligosaccharides (raffinose, stachyose) that are not so digested and cause gas. The classic Brazilian contamination rice + beans improves protein quality by providing all essential amino acids. Legumes have a low glycemic index and high nutritional value.

Fruits – Fruits are the flesh part surrounding the seeds. They are rich in water, vitamins, minerals simples sugars, soluble fiber (pectin),, and antioxidants. They contain vitamin C and carotenoids; their main mineral is potassium. Fruits are classified by quality ( extra, 1st,2nd, 3rd category) and by carbohydrate content, raging from very light fruits (watermelon, pineapple) to more caloric ones (banana, grapes, mango) and even fatty fruits (nuts, chestnuts). After harvesting, fruits remain alive and go through stages of growth, ripening full maturity, and senescence. Ethylene accelerates ripening and promotes the appearance of rot. Losses may be: Quantitative: weight; Qualitative: texture, flavor; Nutritional; Sensory: color, aroma. Caused by impacts, poor storage, fungi, or over-ripening. During processing, fruits can be turned into purees, juices, nectars, beverages, dried fruits and jams – each with specific standards for fruit content, added water or sugar, and heat treatment such as pasteurization. The goal is to preserve the product, inactivate enzymes, and prevent quality loss.

Enzymatic Browning of Fruits

Enzymatic browning occurs when, after mechanical damage, phenolic compounds come into contact with polyphenol oxidase in the presence of oxygen. This produces melanins, which darken the fruit and reduce its quality, flavor, nutritional value, and shelf life. The most common compounds formed by polyphenol oxidase in fruits are: tannin in peaches; chlorogenic acid in pears and apples; catechin in cocoa; tyrosine in lettuce, potatoes and mushrooms; dopamine in bananas.

3- Microbiology and foodborne diseases

Fungi and viruses as spoilage agents – food can spoil due to the growth of fungi (yeasts and molds) and viruses causing changes in color, smell, and taste. Factors that promote growth: pH, water activity, moisture, temperature, availability of nutrients.

Fungi – Yeast- unicellular, capable of fermentation; spoil high-sugar or high-salt foods (pickles, juices, fruits, meat, cheese) ; Molds – multicellular; produce spores; found on bread, fruits, grains, meat types: Aspergillus – produces mycotoxins (aflatoxin) Penicillium – some species useful (cheese); others spoil food Fusarium – produces toxins in grains.

Viruses – Viruses do not change the appearance of food, but cause illness when ingested ( hepatitis A, norovirus)

Bacteria – Aeromonas hydrophila: water, fish; diarrhea infections; antibiotic-resistant. Bacillus cereus; rice, milk; causes diarrheal syndrome (6-24h) or vomiting syndrome (1h). Clostridim botulinum: canned foods; botulism (paralysis, potentially fatal). Campylobacter jejuni/coli: poultry, raw milk, major case of bacterial diarrhea. Listeria monocytogenes: raw milk, cheese, meat; dangerous for pregnant women and elderly. Vibrio spp: seafood ( V. parahaemolytics, V cholerae). Salmonella spp; eggs, meat, milk; diarrhea, vomiting, fever. Staphylococcus aureus: toxins; severe vomiting. Clostridim perfrigens; acute diarrhea within 24 hours. E. coli O157:H7: may case kidney failure.

Foodborne Infections and Intoxications – Foodborne infection – caused by living microorganisms that multiply in the intestine. Symptoms: fever, diarrhea, nausea, abdominal pain. Incubation : hours to days. Foodborne intoxication – caused by toxins already present in the food. Symptoms: sudden vomiting, usually without fever. Incubation minutes to hours. Risk factors: ill or unhygienic food handler; contaminated environment or equipment; contaminated water; improper storage (time x temperature) ; cross-contamination.

Outbreak Investigation – Includes food analysis, clinical diagnosis, epidemiological investigation, and control measures. Hygiene and Safety – Good manufacturing practices; cleaning and disinfection; clean water; Pest control ; temperature control; Overall Conclusion – Food can spoil due to fungi and microbes and can cause serious diseases if contaminated with pathogens. Prevention is based on hygiene, proper storage, heat treatment, process control and understanding the main agents responsible for infections and intoxications.

Food Group  Microorganisms

Dairy products Campylobacter, Salmonella

Eggs Salmonella

Meat Clostridium perfringens, Campylobacter, Salmonella

Ground meat & plant-based meat analogues E. coli, Cyclospora cayetanensis

Poultry Campylobacter, Salmonella

Pork Clostridium perfringens

Vegetables E. coli,

Rice (starchy foods) Bacillus cereus

Canned foods, honeyC lostridium botulinum

4- Food Safety, Contamination, and Drinking Water-soluble

Food safety is directly related to the production and consumption of foods free from physical, chemical, and biological contaminantes, ensuring the protection of consumer health. In this context, quality management is essential, as it involves the application of tools and systems that guarantee safe foods, good sensory and nutritional quality, and compliance with current legislation.

Food production faces several challenges, such as the increase in foodborne disease, technological changes, globalization of trade, and higher consumer expectations. Food quality can be understood from two perspectives: objective qualitaty, linked to technical and measurable criteria, and perceived quality, related to consumer perception and influenced by intrinsic attributes (color, flavor, texture) and extrinsic attributes (brand, labeling, origin and price). Food safety is a non-negotiable requirement, while quality adds value to the product.

To ensure food safety, control and management systems are adopted, such as Good Manufacturing and Handling Practices (GMP/GHP), Standard Operating Procedures (SOPs), Hazard Analysis and Critical Control points (HACCP), and international standards such as ISO 9001 and ISO 22000. These systems aim to prevent contamination, standardize processes, reduce risks, and increase consumer confidence.

Food contamination and spoilage occur mainly due to the action of microorganisms, such as bacteria, molds, yeasts, and viruses. Contamination can cause foodborne illnesses, while spoilage affects sensory characteristicas and leads to economic losses. Perishable foods are the most susceptible and therefore require preservation methods such as refrigeration, freezing, dehydration, the addition of salt, sugar, or preservatives, and thermal treatments.

Food groups of plant and animal origin present specific risks. Plant-based foods are more exposed to contaminants from soil, irrigation water, fertilizer use, and improper handling. Foods of animal origin, on the other hand, are highly nutritios and favor microbial growth, and may be contaminated at all stages of production chain, from farming to consumpttion. Hyginic-sanitary control, combined with proper handling, storage, and transportation, is essential to recuce these risks.

Drinking water is a critical factor for food safety and public health. Contaminated water can transmit bacteria, viruses, and protozoa, causing varios gastrointestinal diseases. Therefore, adequate water treatment, basic sanitation, and microbiological analyses using indicator microorganisms such as coliforms and Escherichia coli are indispensable to ensure potability.

In summary, food safety depends on the integration of quality management, contaminant control, good practices throughout the production chain, and the use potable water. The correct application of these principles is essential to protect public health and ensure safe, high-qualit foods.

5- Food Safety II – Food safety comprises a set of actions, concepts, and tools aimed at ensuring that foods do not cause harm to consumer health and are free from physical, chemical, and biological hazards throughout the entire food chain, from production to final consumption.

Safe foods and food security – Safe food is food that is properly produced, processed, stored, and distributed without posing any risk to human health. The concept of food security is broader and includes not only food safety but also the regular and permanent access of the population to quality food in suficient quantity, while respecting cultural, social, economic, and environmental aspects.

The risks associated with foods can be classified into: Biological risks: pathogenic microorganisms such as bacteria, viruses, fungi, and parasites; Chemical risks: pesticides, residues of veterinary drugs, heavy metals, natural toxins, and contaminants arising from production or processing; Physical risks: foreign objects such as glass, metal, plastic, stones, and various ragments.

Intrinsic and extrinsic factors of microbial growth – The growth of microorganisms in foods depends on factors related to the food itself, known as intrinsic factors, and factors related to the environment, known as extrinsic factors. Among the intrinsic factors are pH, water activity (aw), redox potential (Eh), nutritional value, the presence of natural antimicrobial compounds, and mechanical barriers such as skins, membranes, and natural coverings. Extrinsic factors include storage temperature, environmental gas composition, relative air humidity, and the human factor, which plays a central role as a potential vehicle of microbial contamination. Controlling these factors is essential to reduce microbiological risks and to ensure the hygienic and sanitary qualitty of foods.

Food toxicology - Food toxicology is the discipline that studies the nature, origin, effects, and mechanisms of action of toxic substances present in foods. These substances may be of natural origin, such as toxins found in plants, animals, and fungi, or may result from agricultural practices, industrial processing, storage, and food preparation. A fundamental principle of toxicology is that the dose determines the toxic effect. Therefore, a substance may be harmless or dangerous depending on the amount ingested, the frequency, and the duration of exposure. Toxic effects may be classified as acute, subchronic, or chronic and may also include carcinogenic effects.

Microbiological risk assessment – Microbiological risk assessment is a scientific tool used to estimate the probability and severity of negative effects on human health resulting from the consumption of foods contaminated by pathogenic microorganisms. This approach is recommended by international organizations such as FAO, WHO, and the Codex Alimentarius. The microbiological risk assessment process is structured into three main stages: 1. Risk assessment, which includes hazard identification, hazard characterization, exposure assessment, and risk characterization; 2. Risk management, which consists of deining and implementing appropriate control measures; 3. Risk communication, which ensures transparency and the exchange of information among authorities, industry, the scientific community, and consumers.

Food Safety II is based on the integration of good hygiene practices, control of microbial growth factors, toxicological analysis of foods, and the systematic application of microbiological risk assessment. This integrated approach is essential for protecting public health, preventing foodborne dieseases, and ensuritng the availability of safe, high-quality foods.

6- Planning and Management of UANs and UPRs

The physical-functional planning and management of food and Nutrition Units (UANs) and Meal Production Units (UPRs) require technical, administrative, and strategic analysis to ensure efficiency, food safety, and service quality.

Market Research and Initial Factor – Before implementation, it is essential to conduct marke research in order to : understand the target audience (profile, habits, and purchasing power); analyse competitors; Assess market potential; verify available financial resources; Identify suppliers and qualified human resources. This information reduces risks and guides decisions regarding the type, size, and structure of the unit.

Layout, Flowchart, and Computerization - The layout (physical arragement) refers to the strategic positioning of departments and equipment and must: Ensure a linear and rational workflow; Prevent cross-contamination between raw and ready-to-eat foods; Facilitate cleaning and supervision; Reduce unnecessary movement; Use space efficiently. The flowchart organizes the path of raw materials from receiving to distribution and waste disposal, increasing productivity, food safety, and cost reduction. Computerization supports inventory control, cost management, menu planning, and managerial decision-making.

7 – Basic concepts of cost – This presents the foundation of the subject: what cost is, how it can be classified, and which elements weigh most heavily in a Food and Nutrition Unit (UAN). Concept of cost – cost is the sum of the values of goods and services used to produce other goods or services. In a UAN, the cost of a meal is obtained by relating the total amount spent to the number of meals produced. The text also distinguishes cost from expense: expense is the amount paid for goods, services, labor, taxes, and other items linked to the operation of the unit. Cost classifications – the divides costs in several ways. In accounting classification, there are direct costs, which are directly linked to the final product, such as food, labor, disposables, and cleaning products, and indirect costs, such as rent, telephone, electricity, water, and PPE, which cannot be assigned directly to one specific meal. In economic classification, there are fixed costs, which do not change with the quantity produced, such as rent, taxes, and salaries, and variable costs, which follow the production volume, such as raw materials, fuel, and water. The text also mentions allocated costs ( based on proportional distribution), common costs (one stage that sreves more than one product, shared), and standard costs (planned and expected values used to compare with the actual cost), as well as production costs (from raw material to the final product), commercial costs (advertising-related), and administrative costs (which help keep the organization running). There also costs linked to quality. Quality costs are those used to make sure the product is correct, ( inspections, training, and process control) . Nonconformity costs arise when there ( failures, waste, rework, loss of raw material, and delivery of poor products to customers). The main idea is that investing in quality can reduce future costs. Concepts for management, such Assets (goods and values the company owns), Working capital (keep the business running) cash flow (coming into and going out) , profit (earns more than it spends), contribution margin (remains after paying variable costs), profit margin (% value that become profit), Liabilities (debts and obligations ex: bills to pay, loans, and taxes), selling price (final price charged to the customer for a product or service) , basic selling price (minimum price the company must charge to avoid losing money), market price (customer are willing to pay depende competition, demand, and perceived value), and break-even point (neither profit nor loss). These concepts help the managere understand the financial health of the unit. Composition of costs in a UAN – the main cost components are labour, food supplies, and other operating expenses. Labour is usually very significant and includes wages, recruitment, training, absenteeism, staff turnover, and social charges. Food supplies directly affect the meal cost and depend on the menu, purchasing, storage, waste, and recipe standardisation. Maintenance, replacement of utensils, uniforms, and PPE are also included. Main idea of the text The main point is that the manager needs to know and control everything that influences the cost of the meal. It is not enough to produce well; It is necessary to produce with quality, safety, and within the available resources.

Cost management – Importance of cost management – Cost management is presented as essential for achieving profit, keeping the organisation running, and avoiding waste. The text makes it clear that this is not just about “spending less”, but about understanding costs in order to make correct decisions. Without knowing the costs of products and processes, the unit loses financial control. Stages of cost accounting – The text mentions three stages: data collection and selection, data processing, and management information systems. First, quantitative and monetary data from production are gathered; then they are analysed; finally, they generate reports that help management. In other words, cost is not only recorded, it is interpreted in order to guide decisions. Factors involved in UAN costs – Among the factors that influence costs are the type of contract, the location of the unit, the supply of food items, the menu, labour, and other components of the production process. The text reinforces that every physical resource, raw material, and work activity generates costs.Basic components of cost the chapter highlights as main components: raw materials, labour, taxes, and general production expenses, such as electricity, gas, water, and cleaning materials. Equipment maintenance and depreciation may also be included in order to make the calculation more accurate. Calculation example – Practical case: It calculates labour costs, gas, electricity, maintenance, depreciation, and raw materials, adds everything togetherr, and then divides by the number of meals. In this way, it reaches the unit cost per meal. This example helps show that the final cost depends not only on the food served, but also on the whole structure that makes production possible. Purchasing policy – The text also point out that buying more cheaply does not always mean saving money. The yield of the raw material, correction factors, cooking losses, delivery deadlines and product quality strongly affect the result. So the best choice is the one with the best cost-benefit relationship, not simply the lowest price. Main idea of th text – cost managemet should spport decision-making. The manager needs to look at the figures, interpret deviations, and act without compromising service quality.

Cost control system, price information, and chart of accounts - This test broaden the managerial view and show how cost control helps farm price and organize the business. Costing accounting as a management moved beyond being just a financial control tool. It accumulates, organizes, analysis and interprets operational and physical data generating useful reports for different levels of administration. Cost in UPR and UANs - The text reminds us that UPRs include the food services establishments outside the home, weather commercial or collective, cost management has become essential for maintaining financial returns and excellence in production. Therefore, it the manager's role to plan, calculate results, and monitor costs continuously. Definition of cost and costing process - cost is again defined as the sum of products and service consumed in order to generate new goods and services. The costing process is the monitoring, classification, analysis and recording of expenses incurred directly or indirectly in production. Here the text reinorces the difference between cost and administrative are selling expenses. Direct and indirect costs - The chapter works with the idea that direct or variably cost are directly related to the quantity produced such a raw material, disposables, and cleaning. Indirect or fixes costs do not depend on production volume and require allocation, such as rent, water, internet, consultancy equipment and utensils.Important concept is for pricing and management The test brings together several essential terms: working capital direct and fixes expenses, cash flow, profit, contribution margin, profitability, liability, selling price, basic selling price, market price, and break-even point. These concepts help show that price formation most consider costs, profit margin and the value the market is willing to pay. Quality costs - Another strong point is the explanation of quality costs and non-confirmity costs. Spending on control, training and prevention tends to reduce the losses, rework, returns and customers dissatisfaction. In other words, quality is also a saving strategy. Applicability of cost control - The text begins to show that control should follow the whole production process, from receiving the raw material to distribution the food. Thus cost is not seen only at the end, but monitored throughout the entire process. Many many idea of the text - The main lesson of the chapter is that controlling cost is not only knowing how much was spent, but also forming prices intelligently, monitory results, and sustaining the company in the market.

Cost calculation sheet, stock control sheet, and daily control assessment map - This text is more practical and shows those used in day-to-day work to monitor costs, produtivity, and stock. Analysis of cost calculation - The chapter reinforces that measure in the monitoring production produsses is essential for comparing target and your results. Cost management makes it possible to identify deviation, correct errors and understand the performance of the unity. It can be carried out by production, by service in the by sector. Care with inappropriate cost reduction – The text warns that when cost exceed targets, many companies try to solve the problems by changing the menu to cheaper preparation. But this can reduce consumer acceptance and lower profit. Instead, it may be better to negotiate with suppliers, monitor yields more careful and reduce waste. Importance of yield and a very interesting point is the emphasis placed on correct and cooking factors very feeling high thawing losses, and excessive cooking losses greatly increase the cost of preparation. The test also mentions clean leftovers and plate was as formers of waste that harm planning. Meal cost formula CR=(CMP +CMO+ OC)/ Nr Where CMP is raw material cost, CMO is labour cost, OC means other costs, and Nr is the number of meals. This organises the unit meal cost calculation in a simple way. Productivity the capture also presents the individual productivity index (IPI) given by Nr/Ne, where Nr is the number of meals served and Ne is the number of employees available. This index is used to evaluate labour performance. Stock control - the text explains that stock existed to balance demands and production, avoiding both shortages and excess materials. Stock is one of the company's biggest assets and needs to be controlled in the quantity and value. In UANs, it includes raw material, products in process finishes product, and perishable products. A lack of raw material can stop production, so purchase plain is essential. Role of sheets and Maps - Cost calculation sheets, stock control sheets and daily assessment maps are used to record consumption, entries, exit, losses and costs. With these tools, the manager follows what was planned and what actually happened, making it possible to act more quickly when problem appear.

8 - This text explains the importance of proper price formation in food service operations, emphasizing that the selling price must consider costs, competition, and desired profit margin. It introduces key concepts such as contribution margin, which is the amount remaining after variable costs to cover fixed costs and generate profit, and the break-even point which represents the level of sales at which there is no profit or loss. It also distinguish between fixed and variable that controlling and analyzing these elements supports strategic decision, such as adjusting menus price and production processes to improve profitability and sustainability. Highlights to the financial management is essential for business survival, as it involves planning, controlling and analyzing financial resources. Cash Flow is presented as a key tool that records all cash inflows and outflows, helping managers understand the company's financial position and make informed decision the text also explain concepts such as assets, liabilities and equity as well as key finance statement, and emphasizes that investment and financing decision must be careful managed to ensure liquidity, avoid debt problems, and support sustainably growth. Emphasizes that food safety is a mandatory requirement in the food sector and is regulated by several laws and agencies. It highlights the importance of complying with Good Manufacturing Practice practices (GMP) throughout all stages, from production to consumption, to ensure food quality and safety. Also addresses the needy for proper infrastructure, sanitary control, accurate labeling, and the responsibility of food producers, showing that compliance with regulation is essential to protect public health and ensure legal and competitive business operations. The main trends in the food and beverage sector, focusing on changes in consumer behavior, such as the growing demand for healthy, Sustainable and the high quality food. It explains that understanding markets trends allows businesses to identify opportunities and gain a competitive advantage in a highly competitive industry. Key trends include the grow of delivery service, increased consumption of organic products, concern about food origin and the demand for unique dining experiences.The text also reports that planning, innovation, and adaptability are essential for business success and the long-term survival.

9 - This text explains the evolution of food quality control throughout history, highlighting that food quality involves safety, nutritional value and the consumer satisfaction. It presents the concepts of perceived quality and intrinsic quality and the emphasize that food quality control must follow sanitary regulation and occur continuously during all stages of food production. Discusses about food safety regulations in Brazil and worldwide, highlighting organizations such as ANVISA, the Ministry of Agriculturem FAO, and WHO. It explains the importance of international standards such as Codex Alimentarius, ISO 22000, BRC, and GFSI, which help ensure food safety, traceability, sanitary quality, and consumer protection. Presents Total Quality Management (TQN) and the main tools used to control food quality and safety. It highlights methods such as the Pareto Diam, Ishikawa Diagram, Flowcharts, PDCA, 5S, and 5W2H, which are used to identiy problemes, reduce waste, improve processes, and increase efficiency and competitiveness in food companies. The explains the HACCP system, a preventive method used to identify, control, and reduce biological, chemical, and physical hazards during food production. The system originated in the United States space programme and is now internationally recognised as one of the main tools for ensuring food safety, risk control, and product quality througgout the entire food production chain.