TI: Cyclic fatty acids: natural sources, formation during heat treatment, synthesis and biological properties.

AU: Sebedio-JL; Grandgirard-A
AD: INRA, Station de Recherches sur la Qualite des Aliments de l'Homme, Unite de Nutrition Lipidique, 17, rue Sully, 21034 Dijon Cedex, France.
SO: Progress-in-Lipid-Research. 1989, 28: 4, 303-336; 184 ref.
PY: 1989
LA: English

AB: Upon cooking or frying treatments, the polyunsaturated fatty acids of the oils (mainly 18:2 (n-6) and 18:3 (n-3)) undergo many transformations such as oxidation, polymerization and cyclization. Cyclization results in the formation of cyclic fatty acid monomers, which are well absorbed. However, some of these cyclic components are toxic. Extensive studies made in recent years to identify and quantify the possible toxicity of these products are described in this review. Cyclic fatty acids also occur naturally in oils from plants of the families Malvaceae, Sterculiaceae and Bombaceae. In some countries these new oil sources have been studied with the aim of using them for animal and human nutrition. Considering that these fatty acids are not only unstable but can also be responsible for physiological disorders in fowl, fish and laboratory animals, much work has been done to develop methods to measure precisely the amount of the cyclic fatty acids in oils such as cottonseed, kapok and baobab which could be consumed as edible oils. The methods of analysis and determination of the structure of the cyclic fatty acids (both naturally-occurring in oils used for human consumption and those formed by processing) are reviewed together with what is known so far about their biological properties.
DE: Fatty-acids; plant-oils; reviews-; heat-treatment; Cottonseed-; oilseed-plants
OD: Ceiba-pentandra; Adansonia-digitata
BT: fatty-oil-plants; oil-plants; Spermatophyta; plants; Ceiba; Bombacaceae; Malvales; dicotyledons; angiosperms; Adansonia
CC: VV120; FF000
CD: Physiology-of-Human-Nutrition; Plants-of-Economic-Importance-General
PT: Journal-article
IS: 0163-7827
UD: 950316
AN: 911433940