Explain use of food additives - method of food preservation, Biology

Assignment Help:

Explain Use of food Additives - method of food preservation?

Food additives may be defined as substances added intentionally to food, generally, in small quantities to improve its appearance, flavour, texture or storage properties. These may be classified into different broad groups. Those food additives, which are specifically added to prevent the deterioration or decomposition of a food, have been referred to as chemical preservatives. In food preservation, the added substances may be grouped into two. The first one includes the use of sugar, salt, spices, acetic acid (vinegar) and alcohol, and is referred to as class I preservatives and is considered to be relatively safe to humans. The second group includes the use of benzoic acid, sulfur dioxide, nitrates and nitrites and a variety of neutralizers, firming agents and bleaching agents and referred to as class II preservatives and is considered to be relatively safe to humans, but within the permissible doses prescribed by the Food Regulatory bodies because higher concentrations can be a health hazard. Preservation of foods by the chemicals is effected by interfering with the cell membrane of the microorganism, their enzyme activity and genetic mechanism; by acting as antioxidants.


Related Discussions:- Explain use of food additives - method of food preservation

Explain the sub-culturing, Explain the Sub-Culturing? Microbiological s...

Explain the Sub-Culturing? Microbiological studies require microorganisms in pure form, i.e., a single type of microorganisms should be present in a culture. Maintenance of the

Toxic agents present in which food, Toxic agents present in food which inte...

Toxic agents present in food which interfere with thyroxine synthesis lead to the development of: 1. toxic goitre 2. cretinism 3. simple goitre 4. thyrotoxicosis si

Digestive system - small intestine, SMAL L INTESTINE - A narrow tube 6...

SMAL L INTESTINE - A narrow tube 6 m long. In rabbit 4 m. long.Differentiated into duodenum, jejunum & Ileum. (i) Duodenum - 2.5 cm long. C-shaped (U-shaped in rabbit)

Bacteria, write six characteristics of bacteria

write six characteristics of bacteria

Explain results of abdominal aneurysm surgery, Explain Results of  abdomin...

Explain Results of  abdominal aneurysm surgery? Results:  For ascending aorta replacement, the hospital mortality varies from 0 to 9 per cent. Aortic arch has higher risk of

Aschelminthes, In what part of the human body ASchelminthes found?

In what part of the human body ASchelminthes found?

Massaging and tumbling techniques in meat products, M a s s a g i n ...

M a s s a g i n g and tumbling techniques To improve the desirable characteristics of meat products massaging and tumbling techniques were developed. Massaging involves

Why on earth would be drinking milk to feel better, If a person has a stoma...

If a person has a stomach ulcer (that is aggravated by excessive hydrochloric acid {HCl} secretion ), why on earth would he or she be drinking milk to feel better, when milk is als

Life cycle of filarial worm, Life cycle of Filarial worm Filariasis : ...

Life cycle of Filarial worm Filariasis : It is popularly known as elephantiasis. It is caused by a nematode parasite, wuchereria bancrofti, and W.Malayi. Parasite : Wucher

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd