Chemical reactions involved in the deep-fat frying of foods1

Deep-fat frying is one of the most commonly used procedures for the preparation and manufacture of foods in the world. During deep-fat frying, oxidative and thermal decompositions may take place with the formation of volatile and nonvolatile decomposition products, some of which in excessive amounts are harmful to human health. A limited survey of frying fats used in commercial operations indicated that some were maintained at good quality and others were overused or abused. The volatile decomposition products produced by corn oil, hydrogenated cotton-seed oil, trilinolein, and triolein, under simulated commercial frying conditions, were collected, fractionated, and identified. A total of 211 compounds were identified. The nonvolatile decomposition products produced by trilinolein, triolein, and tristearin under simulated commercial frying conditions were collected and characterized. After being treated under deep-fat frying conditions at 185 C for 74 hr, trilinolein yielded 26.3% non-urea-adduct-forming esters, triolein yielded 10.8%, and tristearin also yielded 4.2%.

[1]  S. Chang,et al.  Chemical reactions involved in deep fat frying of foods: VI. Characterization of nonvolatile decomposition products of trilinolein , 1973, Journal of the American Oil Chemists Society.

[2]  H. Kaunitz,et al.  Influence of feeding fractionated esters of autoxidized lard and cottonseed oil on growth, thirst, organ weights, and liver lipids of rats , 1959 .

[3]  E. G. Perkins,et al.  The nutritional effect of polymers isolated from thermally oxidized corn oil. , 1959, The Journal of nutrition.

[4]  T. Kawada,et al.  Chemical reactions involved in the deep fat frying of foods. I. A laboratory apparatus for frying under simulated restaurant conditions , 1965, Journal of the American Oil Chemists' Society.

[5]  F. Kummerow,et al.  The effect of heated fat on the carcinogenic activity of 2-acetylaminofluorene. , 1962, Cancer research.

[6]  Stephen S. Chang,et al.  Chemical reactions involved in the deep fat frying of foods. II. Identification of acidic volatile decomposition products of corn oil , 1967 .

[7]  C. H. Krieger,et al.  [Biological and chemical studies on commercial frying oils]. , 1959, The Journal of nutrition.

[8]  N. Artman.  The chemical and biological properties of heated and oxidized fats. , 1969, Advances in lipid research.

[9]  D. Melnick,et al.  Composition and control of potato chip frying oils in continuing commercial use , 1958 .

[10]  F. Dickens,et al.  Further Studies on the Carcinogenic Action of Certain Lactones and Related Substances in the Rat and Mouse , 1965, British Journal of Cancer.

[11]  E. E. Rice,et al.  A nutritive evaluation of over-heated fats , 1960 .

[12]  Stephen S. Chang,et al.  Correlation of gas chromatographic profiles and organoleptic scores of different fats and oils after simulated deep fat frying , 1976 .

[13]  B. R. Reddy,et al.  Chemical reactions involved in the deep fat frying of foods: IV. Identification of acidic volatile decomposition products of hydrogenated cottonseed oil , 1968 .

[14]  F. Kummerow,et al.  The isolation and characterization of the polymers formed during the autoxidation of ethyl linolenate , 1953 .