hydrogenation

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hydrogenation

The addition of hydrogen to another compound, usually an unsaturated organic compound. Unsaturated oils are hydrogenated to form margarine.
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Noun1.hydrogenation - a chemical process that adds hydrogen atoms to an unsaturated oil; "food producers use hydrogenation to keep fat from becoming rancid"
chemical action, chemical change, chemical process - (chemistry) any process determined by the atomic and molecular composition and structure of the substances involved
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2-hydroxy-4-(methylthio)butanoate (HMTBa) supplementation increases milk fat and decreases synthesis of alternate biohydrogenation intermediates in diets with risk for milk fat depression (July 28, 10:15 AM -- 10:30 AM)
Beef normally has a low PUFA/SFA ratio compared with pork because of the biohydrogenation of unsaturated fatty acids in rumen (TAMMINGA; DOREAU, 1991).
Trans-fatty acids are found in ruminant fat as a result of biohydrogenation by rumen bacteria.
2) This isomer originates from CLA produced by rumen bacteria as an intermediate in the biohydrogenation of LA or from tissue synthesis of CLA by [[DELTA].
Research shows that endogenous synthesis of CLA in the mammary gland of dairy cattle accounts for the majority of the cis-9, trans-11 CLA present in milkfat with about 70% to more than 90% derived from the conversion of vaccenic acid (18:1, trans-11), a rumen biohydrogenation intermediate.
The meat of ruminant animals such as cattle, sheep and goats has a high content of saturated fat because of their characteristic 'four stomach' anatomy, biohydrogenation of dietary fats in the rumen, and their unique metabolism (Phillipson et al 1970).
These FA are CLA precursors during the ruminal biohydrogenation process and in the mammary gland.
Understanding the profile of the microbial populations involved in the fatty acid biohydrogenation in rumen, as well as the factors affecting their growth, will allow researchers to discover diets that are formulated to modulate the activity of these populations (Bauman et al.
However, some researchers who believed C18:1n9 originated from biohydrogenation in the rumen regarded this as a response of the dietary forage/feed ratio.
Addition of seeds oil to lactating dairy cows ration was one of the methods to change the proportion of total unsaturated FA (TUFA) in milk fat by about 40%, although extensive biohydrogenation occurs normally in the rumen (Dschaak et al.
However a limitation for the deposition of unsaturated fatty acids (UFA) in the meat and dairy products of ruminants occurs due to ruminal biohydrogenation of UFA (Herdmann et al.