scholarly journals Chemometric modeling to relate antioxidants, neutral lipid fatty acids, and flavor components in chicken breasts

2005 ◽  
Vol 84 (1) ◽  
pp. 158-166 ◽  
Author(s):  
K. Jahan ◽  
A. Paterson ◽  
J. Piggott ◽  
C. Spickett
Keyword(s):  
Fatty Acids ◽  
Neutral Lipid ◽  
Flavor Components

Fatty Acids and Flavor Components in the Oil Extracted from Golden Melon Seeds

2021 ◽  
Vol 123 (4) ◽  
pp. 2000233
Author(s):  
Lihua Chen ◽  
Dongna Li ◽  
Chuchu Zhu ◽  
Xia Ma ◽  
Yuzhi Rong
Keyword(s):  
Fatty Acids ◽  
Flavor Components ◽  
Melon Seeds

scholarly journals Lipid composition of the isolated rat intestinal microvillus membrane

1968 ◽  
Vol 109 (1) ◽  
pp. 51-59 ◽  
Author(s):  
G. G. Forstner ◽  
K. Tanaka ◽  
K. J. Isselbacher
Keyword(s):  
Fatty Acids ◽  
Fatty Acid ◽  
Neutral Lipid ◽  
Lipid Composition ◽  
Plasma Membranes ◽  
Membrane Lipids ◽  
Saturated Fatty Acids ◽  
Polar Lipids ◽  
Published Data ◽  
Microvillus Membrane

1. Rat intestinal microvillus plasma membranes were prepared from previously isolated brush borders and the lipid composition was analysed. 2. The molar ratio of cholesterol to phospholipid was greatest in the membranes and closely resembled that reported for myelin. 3. Unesterified cholesterol was the major neutral lipid. However, 30% of the neutral lipid fraction was accounted for by glycerides and fatty acid. 4. Five phospholipid components were identified and measured, including phosphatidylethanolamine, phosphatidylcholine, phosphatidylserine, sphingomyelin and lysophosphatidylcholine. Though phosphatidylethanolamine was the chief phospholipid, no plasmalogen was detected. 5. In contrast with other plasma membranes in the rat, the polar lipids of the microvillus membrane were rich in glycolipid. The cholesterol:polar lipid (phospholipid+glycolipid) ratio was about 1:3 for the microvillus membrane. Published data suggest that this ratio resembles that of the liver plasma membrane more closely than myelin or the erythrocyte membrane. 6. The fatty acid composition of membrane lipids was altered markedly by a single feeding of safflower oil. Membrane polar lipids did not contain significantly more saturated fatty acids than cellular polar lipids. Differences in the proportion of some fatty acids in membrane and cellular glycerides were noted. These differences may reflect the presence of specific membrane glycerides.

Developmental changes in the fatty acid composition of the larval lipid of the house cricket Acheta domesticus (L.)

1970 ◽  
Vol 48 (3) ◽  
pp. 264-268 ◽  
Author(s):  
E. Y. Lipsitz ◽  
J. E. McFarlane ◽  
G. O. Henneberry
Keyword(s):  
Fatty Acids ◽  
Fatty Acid Composition ◽  
Fatty Acid ◽  
Neutral Lipid ◽  
Acid Composition ◽  
Age Differences ◽  
Developmental Change ◽  
Short Chain Fatty Acids ◽  
Acheta Domesticus ◽  
Lipid Components

The fatty acid composition of larvae of Acheta domesticus (L.) at two distinct ages (12 days and 30 days) was determined. No appreciable age differences were observed in the composition of fatty acids from lipid extracts; palmitic, stearic, oleic, and linoleic acids were found to be the major fatty acids, together accounting for about 90% of the total. However, distinct age differences were found in the fatty acid composition of neutral lipid components. The most marked developmental change was a reduction from 34.5% to 10.9% in the myristic acid content of the monoglyceride. High concentrations of short-chain fatty acids were found in at least three neutral lipid components, and considerable alterations in the concentration of these fatty acids occurred during development.

The fatty acid composition of the leatherback turtle Dermochelys coriacea and its jellyfish prey

1990 ◽  
Vol 70 (4) ◽  
pp. 761-770 ◽  
Author(s):  
D. L. Holland ◽  
J. Davenport ◽  
J. East
Keyword(s):  
Fatty Acids ◽  
Arachidonic Acid ◽  
Fatty Acid ◽  
Neutral Lipid ◽  
Total Lipid ◽  
Dry Weight ◽  
Pectoral Muscle ◽  
Dermochelys Coriacea ◽  
Leatherback Turtle ◽  
Total Fatty Acids

The leatherback turtle, Dermochelys coriacea (L.) studied was a male, weighing 916 kg, with a total dorsal length of 291 cm. It was beached on the Welsh coast, UK in September 1988 and is currently the largest leatherback ever recorded.Total lipid formed between 87.5 and 95.4% of the dry weight of representative samples of the blubber and 43.0% and 4.9% of the liver and pectoral muscle respectively. High levels of neutral lipid in the liver (79.0% of the total lipid) as well as the blubber (87.6–99.9% of the total lipid) suggest an important energy storage function for these tissues.Overall, with the notable exception of 22:lwll, fatty acids which are found in a putative jellyfish diet of Rhizostoma, Amelia, Cyanea and Chrysaora are also present in the leatherback liver and muscle, blubber and other fatty tissues. Fatty acid 22:lwll is present in the jellyfish samples, but is absent or at trace levels only in the leatherback tissues (0.1–0.3% of the total fatty acids).The polyunsaturated fatty acids of the w3 series 20:5w3, 22:5w3 and 22:6w3 are well represented in leatherback adipose tissues, muscle and liver as well as in the jellyfish examined. The leatherback and jellyfish lipids are therefore marine in character, but are also similar to terrestrial animal lipid in having a high proportion of fatty acids of the w6 series, principally arachidonic acid, 20:4w6. The significant levels of 20:4w6 in jellyfish total lipid (9.7–20.0% of the total fatty acids) and in the leatherback neutral lipid (1.0–10.9% of the total fatty acids) and phospholipid (0.6–15.5% of total fatty acids) fractions of all tissues sampled suggests that arachidonic acid assumes more importance in food chain relationships involving leatherbacks than in other marine food webs such as those involving fish.

NEUTRAL LIPID CONTENT AND FATTY ACID COMPOSITION OF 1,2-DIACYLGLYCEROLS IN THE HEMOLYMPH OF THE MALE GYPSY MOTH, LYMANTRIA DISPAR L. (LEPIDOPTERA: LYMANTRIIDAE)

1990 ◽  
Vol 122 (6) ◽  
pp. 1101-1109 ◽  
Author(s):  
J. Marshall Clark ◽  
J.R. Marion ◽  
L.J. Scarano ◽  
T.L. Potter ◽  
P.F. Gosselin ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Fatty Acid Composition ◽  
Fatty Acid ◽  
Neutral Lipid ◽  
Acid Composition ◽  
Adult Male ◽  
Lipid Content ◽  
Lymantria Dispar ◽  
Mass Spectrometry Analysis ◽  
Neutral Lipid Content

AbstractQualitative and quantitative changes in the neutral lipid content of hemolymph of gypsy moths, Lymantria dispar L., were assayed in larval, pupal, and adult stages. The major neutral lipid constituents of the hemolymph were 1,2-diacylglycerols and ranged in nominal concentration from 1.6–3.4 (larval), 3.1–4.9(pupal),toamaximumof 19.3 μg lipid per microlitre hemolymph in the adult male. When detected, triacylglycerols and monoacylglycerols never exceed diacylglycerol concentrations. The fatty acid composition of 1,2-diacylglycerols from adult male moths (0–12 h after emergence) was determined as fatty acid methyl esters using gas chromatography/mass spectrometry analysis. Nine fatty acid structures have been assigned. Of these, five are saturated, unbranched, aliphatic fatty acids (C14:0 – C18:0) which comprise 80.5% of the total fatty acid abundance. The remaining four fatty acids consist of two saturated, methyl-branched, aliphatic compounds, a mono-unsaturated aliphatic acid, and a tri-unsaturated, tricyclic, diterpenoid acid.

scholarly journals Effects of including a ruminally protected lipid supplement in the diet on the fatty acid composition of beef muscle

2003 ◽  
Vol 90 (3) ◽  
pp. 709-716 ◽  
Author(s):  
Nigel D. Scollan ◽  
Mike Enser ◽  
Suresh K. Gulati ◽  
Ian Richardson ◽  
Jeff D. Wood
Keyword(s):  
Fatty Acids ◽  
Fatty Acid Composition ◽  
Fatty Acid ◽  
Neutral Lipid ◽  
Acid Composition ◽  
Saturated Fatty Acids ◽  
Fatty Acid Content ◽  
Control Treatment ◽  
Large Shift ◽  
Lipid Supplement

Enhancing the polyunsaturated fatty acid (PUFA) and decreasing the saturated fatty acid content of beef is an important target in terms of improving the nutritional value of this food for the consumer. The present study examined the effects of feeding a ruminally protected lipid supplement (PLS) rich in PUFA on the fatty acid composition of longissimus thoracis muscle and associated subcutaneous adipose tissue. Animals were fed ad libitum on grass silage plus one of three concentrate treatments in which the lipid source was either Megalac (rich in palmitic acid; 16:0) or PLS (soyabean, linseed and sunflower-seed oils resulting in an 18:2n−6:18:3n−3 value of 2·4:1). Treatment 1 contained 100g Megalac/kg (Mega, control); treatment 2 (PLS1) contained 54g Megalac/kg with 500g PLS/d fed separately; treatment 3 (PLS2) contained no Megalac and 1000g PLS/d fed separately. The PLS was considered as part of the overall concentrate allocation per d in maintaining an overall forage:concentrate value of 60:40 on a DM basis. Total dietary fat was formulated to be 0·07 of DM of which 0·04 was the test oil. Total intramuscular fatty acids (mg/100g muscle) were decreased by 0·31 when feeding PLS2 compared with Mega (P<0·05). In neutral lipid, the PLS increased the proportion of 18:2n−6 and 18:3n−3 by 2·7 and 4·1 on diets PLS1 and PLS2 v. Mega, respectively. Similar responses were noted for these fatty acids in phospholipid. The amounts or proportions of 20:4n−6, 20:5n−3 or 22:6n−3 were not influenced by diet whereas the amounts and proportions of 22:4n−6 and 22:5n−3 in phospholipid were decreased with inclusion of the PLS. The amounts of the saturated fatty acids, 14:0, 16:0 and 18:0, in neutral lipid were on average 0·37 lower on treatment PLS2 compared with Mega. Feeding the PLS also decreased the proportion of 16:0 in neutral lipid. The amount of 18:1n-9 (P=0·1) and the amount and proportion of 18:1 trans (P<0·01) were lower on treatments PLS1 and PLS2 in neutral lipid and phospholipid. Conjugated linoleic acid (cis-9, trans-11) was not influenced by diet in the major storage fraction for this fatty acid, neutral lipid. The PUFA:saturated fatty acids value was increased markedly (×2·5) with inclusion of the PLS (P<0·001) while the σn−6:n−3 value increased slightly (×1·2; P=0·015). The results suggest that the protected lipid used, which was rich in PUFA, had a high degree of protection from the hydrogenating action of rumen micro-organisms. The PLS resulted in meat with a lower content of total fat, decreased saturated fatty acids and much higher 18:2n−6 and 18:3n−3. The net result was a large shift in polyunsaturated: saturated fatty acids, 0·28 v. 0·08, on feeding PLS2 compared with Mega, respectively.

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