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By Edwin N. Frankel

The sphere of antioxidants has accelerated during the last six a long time right into a good selection of multi-disciplinary parts that effect meals and healthiness. Antioxidants in foodstuff and biology: evidence and fiction is a guide designed to assist all those that have to hinder or keep an eye on oxidation, particularly in nutrients items, or to appreciate the homes of antioxidants in foodstuff, food, wellbeing and fitness and drugs. It conveys the complexity of antioxidant chemistry by way of supplying an appreciation of a few of the phenomena that have an effect on oxidation and its inhibition in meals and organic systems.

Beginning with the underlying chemistry, the booklet strikes directly to clarify how the job of antioxidants is affected on the interface of advanced multiphase lipid structures and to debate the issues of comparing the actions of antioxidants in meals and organic structures. After reviewing the antioxidants found in quite a few meals, the writer addresses the speculation that the future health of anyone is inspired by means of the potency of assorted defense platforms opposed to oxidant harm. He additionally considers even if extra or better common antioxidants are wanted in our vitamin to minimize oxidative pressure from nutritional and environmental components, and to therefore decrease the danger of heart problems

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Extra info for Antioxidants in Food and Biology. Facts and Fiction

Example text

However, in the presence of metals, some milk proteins may promote lipid oxidation. 2. 5, p. 264). phospholipids are protected against oxidation by lipophilic antioxidants such as α-tocopherol. The various constituents of an emulsion are distributed according to their polarity and surface activity between the different phases, including the oil phase, the water phase and the interface. 2). Non-polar constituents are partitioned in the oily phase, the polar constituents mainly in the aqueous phase, and the surfaceactive amphiphilic constituents in the interface.

33, 601–617. Heinonen, M, Rein, D, Satué-Gracia, MT, Huang, S-W, German, JB and Frankel, EN (1998) Effect of protein on the antioxidant activity of phenolic compound in a lecithin-liposome oxidation system. J. Agric. , 46, 917–922. Howard, JA (1973) Homogeneous liquid-phase autoxidations. In: Free Radicals Vol. II (JK Kochi, ed), John Wiley & Sons, New York, pp. 4–62. Huang, S-W, Satué-Gracia, MT, Frankel, EN and German, JB (1999) Effect of lactoferrin on oxidative stability of emulsions and liposomes.

A Emulsions contained 5% oil and 1% lecithin as emulsifier. Analyses for peroxide values were made after storage at 40°C. can thus promote iron catalysed oxidation if used at insufficient concentrations by favoring complex formation with Fe3+ over Fe2+, thus shifting the ratio in favor of the more catalytically active Fe2+. To achieve proper inhibition of lipid oxidation it is important therefore to use an excess molar concentration with EDTA. The same precaution is necessary with ascorbic acid to avoid prooxidant effects.

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