scholarly journals The Physiological Role of Oxygenated Unsaturated Fatty Acids

1988 ◽  
Vol 37 (10) ◽  
pp. 898-905
Author(s):  
Tadahiro KATO
Keyword(s):  
Fatty Acids ◽  
Unsaturated Fatty Acids ◽  
Physiological Role

scholarly journals Glutathione Protects Lactobacillus sanfranciscensis against Freeze-Thawing, Freeze-Drying, and Cold Treatment

2010 ◽  
Vol 76 (9) ◽  
pp. 2989-2996 ◽  
Author(s):  
Juan Zhang ◽  
Guo-Cheng Du ◽  
Yanping Zhang ◽  
Xian-Yan Liao ◽  
Miao Wang ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Stress Responses ◽  
Freeze Drying ◽  
Unsaturated Fatty Acids ◽  
Cold Treatment ◽  
Protective Role ◽  
Intracellular Accumulation ◽  
Lactobacillus Sanfranciscensis

ABSTRACT Lactobacillus sanfranciscensis DSM20451 cells containing glutathione (GSH) displayed significantly higher resistance against cold stress induced by freeze-drying, freeze-thawing, and 4°C cold treatment than those without GSH. Cells containing GSH were capable of maintaining their membrane structure intact when exposed to freeze-thawing. In addition, cells containing GSH showed a higher proportion of unsaturated fatty acids in cell membranes upon long-term cold treatment. Subsequent studies revealed that the protective role of GSH against cryodamage of the cell membrane is partly due to preventing peroxidation of membrane fatty acids and protecting Na+,K+-ATPase. Intracellular accumulation of GSH enhanced the survival and the biotechnological performance of L. sanfranciscensis, suggesting that the robustness of starters for sourdough fermentation can be improved by selecting GSH-accumulating strains. Moreover, the results of this study may represent a further example of mechanisms for stress responses in lactic acid bacteria.

Regulation Of The Fatty Acid Composition Of Platelet Phospholipids

1981 ◽  
Author(s):  
M L McKean ◽  
J B Smith ◽  
M J Silver
Keyword(s):  
Fatty Acids ◽  
Fatty Acid Composition ◽  
Fatty Acid ◽  
Acid Composition ◽  
Unsaturated Fatty Acids ◽  
De Novo ◽  
Membrane Phospholipids ◽  
De Novo Biosynthesis ◽  
Coa Transferase

The fatty acid composition of cell membrane phospholipids does not remain constant after de novo biosynthesis, but undergoes continual remodelling. One of the major routes for remodelling probably includes the deacylation-reacylation steps of the Lands Pathway. This has been shown to be important for the incorporation of long chain, polyunsaturated fatty acids into phospholipids by liver and brain. An understanding of the mechanisms involved in these processes in platelets is especially important in light of the large stores of arachidonic acid (AA) in platelet phospholipids and the role of AA in hemostasis and thrombosis. Previous results from this laboratory have shown that the turnover of radioactive AA, 8,11,14-eicosatrienoic and 5,8,11,14,17-eicosapentaenoic acids in the phospholipids of resting platelets is more rapid than the turnover of radioactive C16 and C18 saturated and unsaturated fatty acids. However, little is known about how fatty acids, especially AA and its homologues, are incorporated into platelet phospholipids during de novo biosynthesis or how they are exchanged during remodelling.At least three enzymes are involved in the deacylation- reacylation of phospholipids: phospholipase A2; acyl CoA synthetase; and acyl CoA transferase. We have studied acyl CoA transferase and have found considerable activity in human platelet membranes. Experiments are in progress to determine the substrate specificity and other properties of this enzyme.

Role of dietary lipids and butylated hydroxy anisol (BHA) administration on albino rats. Part II. Liver and heart unsaturated fatty acids

Nahrung/Food ◽  
1993 ◽  
Vol 37 (6) ◽  
pp. 561-570 ◽  
Author(s):  
H. S. H. Abu-El-Zahab ◽  
M. A. Saad Aida ◽  
S. F. El-Sisi
Keyword(s):  
Fatty Acids ◽  
Unsaturated Fatty Acids ◽  
Dietary Lipids ◽  
Albino Rats

The role of radical polymerization in the production of thermoregulating microcapsules or polymers from saturated and unsaturated fatty acids

2017 ◽  
Vol 135 (10) ◽  
pp. 45970 ◽  
Author(s):  
Anna M. Szczotok ◽  
Manuel Carmona ◽  
Anna-Lena Kjøniksen ◽  
Juan F. Rodriguez
Keyword(s):  
Fatty Acids ◽  
Radical Polymerization ◽  
Unsaturated Fatty Acids
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