Lipid composition of oats (Avena sativa L.)

Abstract

Compositions of lipids extracted from a sample of Hinoat oat by seven solvent systems and that extracted with chloroform/methanol (2:1 v/v) from six selected cultivars representing high and low lipid contents are reported. Lipid components (steryl esters, triglycerides, partial glycerides, free fatty acids, glycolipids and phospholipids) were separated by silicic acid column chromatography and thin layer chromatography and quantitated by GLC analysis of fatty acids and phosphorus determinations. Twelve oat cultivars were examined for the fatty acid composition of lipid extracted with n-hexane. Lipids extracted from Hinoat by different solvent systems ranged from 5.6 to 8.8%. Quantitative distribution of lipid components extracted with chloroform/ methanol from six cultivars containing 4.6 to 11.6% lipid showed a significant correlation (3' = 0.99) between the total lipid and the neutral lipid content. Phospholipid content was similar in all cultivars, but glycolipids showed a two-fold increase in high lipid oats. Triglycerides contained less palmitic and more oleic acid than the glycolipids or phospholipids. Nine glycolipids and 11 phospholipids have been identified, and the polar lipid composition of Hinoat oat is presented.

FEEDING AND METABOLISM TRIALS, AND ASSESSMENT OF CARCASS AND MEAT QUALITY FOR GROWING-FINISHING PIGS FED NAKED OATS (Avena nuda)

“…acids and decreased linoleic acid so that these acids were 18, 40 and 37 % in the naked oats diet (Diet 100); levels in general agreement with those given by Sahasrabudhe (1979) for Terra (naked) oats. These changes in FA composition of the diet were reflected in a change only in the linoleic acid content of the bacKat ( …”

Oat (<i>Avena sativa</i> L.): Oil and Nutriment Compounds Valorization for Potential Use in Industrial Applications

“…Moreover, phospholipids are known to be essential to the establishment of body cells and considered as antioxidants 79 81 . Oat phospholipids fraction is estimated to be 5-26 of total lipids 61,82,83 . Regarding the composition of this lipid class, for example, Price and Parsons 84 found that L-α-phosphatidylethanolamine PE , L-α-phosphatidylcholine PC , and L-α-lysophosphatidylcholine lyso-PC were the most abundant of all tested cereal grains.…”

“…Regarding the composition of this lipid class, for example, Price and Parsons 84 found that L-α-phosphatidylethanolamine PE , L-α-phosphatidylcholine PC , and L-α-lysophosphatidylcholine lyso-PC were the most abundant of all tested cereal grains. On the other hand, Sahasrabudhe 83 determined some phospholipids proportion in six oat cultivars with 29.9 PC the most abundant , 20.4 L-α-lysophosphatidylethanol-amine lysoPE , 14.8 PE, 9.5 L-α-phosphatidylglycerol PG , 3 . 9 L -α -p h o s p h a t i d y l i n o s i t o l P I , a n d 3 .…”

Effect of Habitat Conditions on Content and Quality of Lipids in Selected Oat Forms

“…W produkcji żywności ziarno to postrzegane jest nie tylko jako ważne źródło włókna pokarmowego, ale także tłuszczu o dobrej jakości [8,9,16]. Ze względu na dużą, w porównaniu z innymi zbożami, zawartość tłuszczu, o znacznym udziale nienasyco-…”

“…Zawartość tłuszczu w ziarnie owsa zależy od wielu czynników: warunków glebowych (typu gleby, zasobności w składniki pokarmowe), przebiegu warunków atmosferycznych w okresie wegetacji [12], metodyki oznaczania lipidów [3,8], a przede wszystkim od formy owsa (odmiana oplewiona lub nagoziarnista) [5,6], przygotowania próbki (ziarno oplewione, obłuszczone) [4] i genotypu [2,7]. W przeprowadzonych badaniach istotne zróżnicowanie zawartości tłuszczu stwierdzono jedynie pomiędzy badanymi genotypami (tab.…”