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2. Answer the following questions.

1. What is food spoilage?

2. What are the reasons of food spoilage?

3. What happens when bacteria breaks down the food?

4. What is responsible for the decomposition of food with high sugar content?

5. Name the main signs and consequences of food spoilage?

6. What are the methods of prevention that can be used to prevent food spoilage?

7. When does botulism occur?

8. At home, prevention mainly consists of good food safety practices, doesn`t it?

9. What makes up one third of cases of food poisoning in developed countries?

10. Are most animal poisons synthesized by the animal?

3. Find Russian equivalents to the given English terms.

1. edible to humans

1. видимый внешне

2. external forces

2. нежелательный вкус

3. harvested crops

3. съедобный для человека

4. unpleasant odor

4. внешние силы

5. undesirable taste

5. срок хранения

6. diminished in quality

6. собранный урожай

7. visible externally

7. скоропортящаяся пища

8. shelf life

8. рациональный промежуток времени

9. reasonable length of time

9. неприятный запах

10. perishable food

10. ухудшение качества

4. Translate and memorize the following word combinations.

vacuum packed, high sugar content, time to multiply, intense vomiting, improperly canned, low-acid foods, unknown sources, definition of strict rules of hygiene, veterinary surveying, heat treatment, pungent sulfur compounds, therapeutic properties, appropriate dosages.

5. Say whether the statements are true or false.

1. Packaging is the process in which food deteriorates to the point in which it is not edible to humans or its quality of edibility becomes reduced. 2. When bacteria breaks down the food, acids and other waste products are created in the process. 3. Symptoms for bacterial infections are delayed because the bacteria need time to multiply. 4. Yeasts can be responsible for the decomposition of food with low sugar content. 5. If mold occurs, it is never visible externally on the item. 6. The toxic effects from consuming spoiled food are known colloquially as "food poisoning", and more properly as "food borne". 7. Refrigeration can increase and expand the shelf life of certain foods and beverages. 8. Canning of food can preserve food for a particularly short period of time, whether canned at home or commercially. 9. Prevention is mainly the role of the state, through the definition of strict rules of hygiene and a public services of veterinary surveying of animal products in the food chain, from farming to the transformation industry and delivery (shops and restaurants). 10. Viral infections make up perhaps two thirds of cases of food poisoning in developed countries.

6. Retell the text using as many words from active vocabulary as possible. Text 2.

Mechanism

1. Master the active vocabulary.

intestine – 1. внутренний; 2. кишка, кишечник

bloodstream – кровоток

sporadic – единичный, отдельный, случайный, спорадический; появляющийся от случая к случаю

dimension – измерение, размеры, величина, объём, протяжение

tackle – 1. принадлежности, снасть; 2. энергично браться за; биться над

malnutrition – недостаточное питание

to inflict – налагать; наносить; причинять

clam – 1. двустворчатый моллюск; 2. раковина двустворчатого моллюска; 3. молчун

strain – 1. растягивать, напрягаться, тянуться; 2. порода; племя; 3. деформация; напряжение; растяжение.

Incubation period

The delay between consumption of a contaminated food and appearance of the first symptoms of illness is called the incubation period. This ranges from hours to days (and rarely months or even years, such as in the case of Listeriosis or Creutzfeldt-Jacob disease), depending on the agent, and on how much was consumed. If symptoms occur within 1–6 hours after eating the food, it suggests that it is caused by a bacterial toxin or a chemical rather than live bacteria.

The long incubation period of many food borne illnesses tends to cause sufferers to attribute their symptoms to "stomach flu".

During the incubation period, microbes pass through the stomach into the intestine, attach to the cells lining the intestinal walls, and begin to multiply there. Some types of microbes stay in the intestine, some produce a toxin that is absorbed into the bloodstream, and some can directly invade the deeper body tissues. The symptoms produced depend on the type of microbe.