Добавил:
Upload Опубликованный материал нарушает ваши авторские права? Сообщите нам.
Вуз: Предмет: Файл:
Posobie_Novoe_v_tekhnologii_produktov_obsch_pit...doc
Скачиваний:
0
Добавлен:
01.05.2025
Размер:
1.06 Mб
Скачать

Exercise 2. Answer the questions to the text.

  1. What does the meat processing and rendering industry include?

  2. What kinds of wastes does meat processing industry generate?

  3. What do the amounts of wastewater generated and the pol­lutant load depend on?

  4. What may wastewater contain?

  5. How can all slaughtering wastes be used?

  6. What is essential for maximizing product recovery and reducing waste loads?

  7. How can the amounts and strength of wastes be reduced?

  8. What measures should be used to reduce the odour nuisance and the generation of solid and liquid wastes from the production processes?

Unit 2. Fish and food value of fish

TASK 1

Exercise 1. A) Read and translate the following words and word combinations, pay attention to the pronunciation:

furnish, quality, variety, digestible, tissues, essential, maintenance, specific, calcium, phosphorus, anemia, thyroid, sulphur, constituent, nervous, carbon dioxide, hydrolysis, oxidation, nitrogenous, edible, roe, muscle, iodine;

highly digestible proteins; body tissues; covering tissues; an essential foundation; maintenance of life; maintenance of growth; specific functions; nutritional anemia; thyroid gland; nervous system; as a result of hydrolysis and oxidation; quality of the nitrogenous compounds; edible parts.

B) Memorize the following words and phrases:

food value

пищевая ценность

furnish, v

обеспечивать

body tissues

ткани тела

shellfish, n

животное, имеющее раковину или панцирь (устрица, краб)

abundance, n

обилие

muscle, n

мускул, мышца

maintenance, n

поддержание

constituent, n

составная часть

well-being

самочувствие

liver oil

жир печени

assimilate, v

ассимилировать(ся), усваивать

milt, n

молоки

roe, n

икра

Exercise 2. Read and translate the text. Food Value of Fish

Few foods can furnish the quality and variety of nutritional factors which are provided in fishery products. Fish and shellfish are an excellent source of highly digestible proteins, are rich in vitamins and contain an abundance of minerals in quantity and variety. Some fish are also high in fat. Proteins are important for their building of muscle and other body tissues. They are an essential foundation of all diets for man or animals and are necessary in any diet for normal growth and maintenance of life. They are composed of what might be called little building stones known as amino acids. The food value of different proteins depends on the variety and content of these amino acids. Fish proteins are complete, that is, they contain all of the amino acids required for the growth and maintenance of the human body.

Minerals are essential to the performance of certain specific functions in the body. They help to build up the bones, brain, nervous system, muscles and covering tissues of man. For instance, calcium and phosphorus are necessary for development, growth and maintenance of bones and teeth.

Iron and copper are essential in the treatment and prevention of nutritional anemia. Iodine is required for the proper functioning of thyroid gland.

Sulphur, one of the essential amino acid in proteins, is important for proper growth. Most fishery products are relatively high in the above mentioned minerals.

Vitamins are important for growth and maintenance of general well-being. The vitamins in fish are assimilated by man and serve to regulate metabolism. Vitamins A and D are particularly valuable. Some fishery products are rich in vitamins; for instance, the oils of fish livers are the most important source of vitamin D.

The role of fat is mainly to produce heat. Being transformed into carbon dioxides and water as a result of hydrolysis and oxidation, fat becomes the main source of the body heat. Fatty fish have high energy value due to the fat content which is as easily and completely digested as fats from other animals.

To make use of fish as food оne must know its relative content of edible material, as well as proportion and quality of the nitrogenous compounds, fat, vitamins and minerals. One should keep in mind that the whole fish is not usually used for food, but only such edible parts as the body muscles and sometimes milts, roes, liver and head muscle.