the present study was carried out to investigate the effect of various refining processes’ conditions on conjugated dienes in soybean oil. conjugated dienes contents of soybean oil were found to undergo reduction in neutralization and bleaching steps while being increased in deodorization. it was observed that alkali refining (neutralization) through 12 and 14 °bé, bleaching with either acid ac...

In this study, we compared three acid-catalyzed methods and three base-catalyzed methods for the methylester preparation of conjugated dienoic fatty acids and conjugated trienoic fatty acids in food and biological samples. Among the six methods examined, the sodium methoxide/methanol (NaOCH3/MeOH) method and the tetramethylguanidine/ methanol (TMG/MeOH) method of methylester preparation from tu...

The CLA story began with the discovery by Pariza and co-workers that fat extract from ruminants contained compounds that possessed anticarcinogenic activity. They subsequently identified these compounds as conjugated dienoic isomers of linoleic acid and coined the term conjugated linoleic acid or CLA (see review 1). Over the last decade the published research on the biology of CLA has increased...

Phytochemical analysis of Fijian populations of the green alga Tydemania expeditionis led to the isolation of two unsaturated fatty acids, 3(zeta)-hydroxy-octadeca-4(E),6(Z),15(Z)-trienoic acid (1) and 3(zeta)-hydroxy-hexadeca-4(E),6(Z)-dienoic acid (2), along with the known 3(zeta)-hydroxy-octadeca-4(E),6(Z)-dienoic acid (4). Investigations of the red alga Hydrolithon reinboldii led to identif...

Conjugated dienoic derivative of linoleic acid (CLA) is a collective term which refers to a mixture of positional and geometric isomers of linoleic acid. It is a naturally occurring substance in food and is present at higher concentrations in products from animal sources. The present study reports that synthetically prepared CLA is an effective agent in inhibiting the development of mammary tum...

From fruit bodies of the basidiomycete Hygrophorus eburneus (Bull.: Fr.) Fr. (Tricholomataceae) eight fatty acids (C16, C18) with γ-oxocrotonate partial structure could be isolated. Initial tests demonstrate their bactericidal and fungicidal activity. The structures of (2E,9E)-4-oxooctadeca2,9,17-trienoic acid (1), (2E,11Z)-4-oxooctadeca-2,11,17-trienoic acid (2), (E)-4-oxohexadeca-2,15dienoic ...

Abstract Chia seed and flax oils are rich in polyunsaturated fatty acids, but susceptible to oxidative deterioration. The aim of this study was determine the stability chia enhance using rosemary or garlic extracts. During accelerated storage at 65 °C for 14 days, antioxidant abilities extracts were evaluated compared with those butylated hydroxy toluene, ascorbyl palmitate, ?-tocopherol peroxi...