Explain preservation by preservatives, Chemistry

Assignment Help:

Q. Explain Preservation by Preservatives?

Preservatives, as you may already know, belong to a class of food additives that extend shelf life by inhibiting microbial growth, or by minimizing the destructive effects of oxygen, metals, and other factors that may lead to rancidity. Common preservatives include nitrites (used extensively in processed meats), sodium benzoate (often added to soft drinks), sorbic acid (dairy products), calcium and sodium propionates and sorbates (mould inhibitors used in baked goods) and common table salt.

The preservatives generally used in fruit and vegetable products may be broadly classified as class I and class II preservatives.

The class I preservatives are the natural preservatives which are not restricted in any food. Examples of class I preservatives are common salt, sugar, dextrose/glucose syrup, spices, vinegar or acetic acid and honey.

Class II preservatives are the chemical preservatives, which prevent or delay the growth of microorganisms. However, the use of chemical preservatives is limited in foodstuffs.


Related Discussions:- Explain preservation by preservatives

Sketch a flow diagram of a water treatment process, Comment on each of the ...

Comment on each of the raw water parameter's significance in relation to the selection of appropriate water treatment process. Sketch a flow diagram of a treatment process to pr

Borax bead test - chemical analysis, Borax bead test : The transparent ...

Borax bead test : The transparent glassy bead while heated along with inorganic salt and the colour produced gives some idea of cation present in it. Table:

Combustion analysis, When 3.896 grams of a hydrocarbon, CxHy, were burned i...

When 3.896 grams of a hydrocarbon, CxHy, were burned in a combustion analysis apparatus, 11.40 grams of CO2 and 7.003 grams of H2O were produced. In a separate experiment, the mo

Mechanism and techniques of polymerization, I want an Assignment ab...

I want an Assignment about mechanism and techniques of polymerization

Unit cell, how can i make best assignment on unit cell topic?

how can i make best assignment on unit cell topic?

Physical chemistry, What happens when a melt containing 1% Ag and 99% Pb is...

What happens when a melt containing 1% Ag and 99% Pb is cooled?

Electrolysis of water, Electrolysis of Water without Indicator • Assembl...

Electrolysis of Water without Indicator • Assemble the power supply for electrolysis. Attach alligator clips to the separate poles of the battery. Make sure that the wires from

Explain the wheat milling process in brief, Wheat milling: The milling of ...

Wheat milling: The milling of wheat consists of the separation of bran and germ from endosperm and reduction of endosperm to fine flour. There are three distinct methods of millin

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