polyunsaturated fat

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polyunsaturated fat

[¦päl·ē‚ən′sach·ə‚rād·əd ′fat]
(materials)
A fat or oil based on fatty acids such as linoleic or linolenic acids which have two or more double bonds in each molecule; corn oil and safflower oil are examples.
References in periodicals archive ?
Oil C has the least polyunsaturation of the 3 oils (Table 4), hence the expected lowest K value as fresh oil, but here the comparatively lower ssa value may have more significance.
Because meadowfoam oil contains long-chain fatty acids that have high levels of monounsaturation and very low levels of polyunsaturation, it is stable when heated, and it doesn't oxidize easily.
Such a low oleic acid concentration is associated with a high degree of polyunsaturation in the oil, which has a marked detrimental effect on its oxidative stability (Scarth and McVetty, 1999).