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Promoters of oxidation Recognition of catalysts, factors and conditions that promote or contribute to oxidation of lipids is essential if these conditions are to be controlled. Some of the most important factors are: 1. Heat. Oxidation is typical of most chemical reactions. A 10 ° C increase in temperature doubles the reaction rate. 2. Light . Ultraviolet light is a powerful initiator and catalyst of oxidation. 3. Heavy metals . Dissolved metals such as iron and copper are also effective catalysts for oxidation at the ppm level. 4. Alkaline conditions . Basic conditions and alkaline metal ions promote free radical oxidation. 5. Degree of unsaturation . Number and position of double bonds in fat molecules can be directly related to susceptibility to oxidation; for example, linolenic acid is more easily oxidised than oleic acid. 6. Pigments . Residual pigments found in vegetable oils promote oxidation. Chlorophyll, for example, can promote oxidation of various oils by producing singlet oxygen. 7. Availability of oxygen . Oxygen is required for oxidation.
The ages of A, B and C are in the ratio of 5:3:7 respectively. If the sum of their ages is 60 years, then find the age of B.
If (a +b) :(b+ c) :(c+ a) =4:7:9 And a +b+ c =30 then find the value of c?
Number of faculties in Physics and Biology in an institute is in the ratio of 3:5 respectively. If 75 more faculties join Physics, while 40 more faculti...
A sum of money is divided among P, Q, R and S in the ratio of 2:3:9:10 respectively. If the share of R's is Rs. 3900 more than the share of Q, then what...
Incomes of company A and company B are in the ratio of 4:7. Had the income of company A been more by Rs.15 lakh, the ratio of their incomes would have b...
In a class, the ratio of students who passed to those who failed is 5:6. If 30 additional students had passed the exam, the ratio would shift to 17:16. ...
In the financial records of individuals A and R, the proportion of their salaries in the year 2022 was 5:4. Subsequently, the ratio of A's salaries in 2...
Rs 11,550 has to be divided between X, Y & Z such that X gets 4/5 of what Y gets and Y gets 2/3 of what Z gets. How much more does Z get over X (in Rs)?
The sum of the first, second, and third numbers is 231. The first and second numbers are in a 3:5 ratio, and the second and third...
A stone worth Rs.3800 drops and breaks with weight in the ratio 2:3:5. The price of stone is directly proportional to square of its weight. Find the tot...
