Oxidative Rancidity

Oxidation is the major cause of admixture of food and go products which contain fats and oils, because it is one of the main causes of rancidity in these products. Oxidation is a weak point of al about all fats and veg oils, point those containing natural antioxidants. The factors to consider, when discussing downslope of fats and oils and methods of keep backion, include bio chemical processes (enzyme caused deterioration), chemical processes (oxygen caused deterioration or auto-oxidation), nature and condition of substrates, required memory board time, light, temperature, etc. tether types of additives be commonly used to prevent the deterioration of fats and oils: antioxidants, their synergists, and preservatives (antimicrobial agents). It should be noned that antioxidants and preservatives act independently of each other. Amalfis major products are antioxidant formulations, however, formulations containing preservatives are also available. Antioxidants are add ed to fats and oils in minute quantities, because of salute factors and regulatory requirements. Another reason is sexual inversion; when an excess of antioxidants acts in the opposite way and actually promotes oxidation. Antioxidants put up an alternate passage for oxidation which does not involve the substrate, e.g. fats and oils.

The antioxidant does not function indefinitely; it is destroyed in the process. Peroxide take account is one of the most important criteria used to monitor the oxidation process. In the flux of oxidation, the peroxide value first increases actually slowly (the demonstration occlusion). When this period ends, the peroxide value starts evolution very rapidly, and signs of deterioration become e! vident. The efficacy of antioxidants can be expressed as a protective factor (PF): installation period with antioxidant PF = ------------------------------------------------- Induction period without antioxidant This formula shows that the role of antioxidants is to reach out the induction period and...If you want to get a salutary essay, order it on our website: OrderEssay.net

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