Effect of temperature shift strategy in the production unsaturated fatty acids from Rhizopus oligosporus

2020 ◽  
Author(s):  
M. R. Salehoddin ◽  
N. Hafizh ◽  
T. S. Utami ◽  
R. Arbianti ◽  
H. Hermansyah
Keyword(s):  
Fatty Acids ◽  
Unsaturated Fatty Acids ◽  
Temperature Shift ◽  
Effect Of Temperature ◽  
Rhizopus Oligosporus ◽  
Shift Strategy

The effect of temperature on the fatty acids and isozymes of a psychrotrophic and two mesophilic species ofXenorhabdus, a bacterial symbiont of entomopathogenic nematodes

2001 ◽  
Vol 47 (5) ◽  
pp. 382-391 ◽  
Author(s):  
Hongjun He ◽  
Roger Gordon ◽  
John A Gow
Keyword(s):  
Fatty Acids ◽  
Fatty Acid Composition ◽  
Fatty Acid ◽  
Acid Composition ◽  
Unsaturated Fatty Acids ◽  
Arachidic Acid ◽  
Distinct Species ◽  
Temperature Adaptation ◽  
Effect Of Temperature ◽  
Xenorhabdus Nematophila

In the first part of this study, generation times relative to temperature, together with cardinal and conceptual temperatures, were determined for four strains of Xenorhabdus bacteria that represented three geographically distinct species. The data showed that the NF strain of Xenorhabdus bovienii, like the Umeå strain of the same species, is psychrotrophic, while Xenorhabdus sp. TX strain resembles Xenorhabdus nematophila All strain in being mesophilic. In the second part, the capacity of these bacteria to adapt to changes in temperature, shown by changes in fatty acid composition, was investigated. As temperature declined, the proportions of the two major unsaturated fatty acids, palmitoleic (16:1ω7) acid and oleic (18:1ω9) acid, increased significantly in all of the strains. The proportion of the prevalent saturated fatty acid, which was palmitic acid (16:0), decreased. In the All, NF, and Umeå strains, myristic acid (14:0), margaric acid (17:0), cyclopropane (17:0c), and arachidic acid (20:0) decreased with decreasing temperature. In the third part of the study, the synthesis of isozymes in response to changing temperature was investigated. For the seven enzymes studied, the numbers for which isozyme synthesis was temperature related were as follows: five for Umeå, four for All, three for NF, and two for TX. Where the study dealt with fatty acid composition and isozyme synthesis, the results show a broad capacity for physiological temperature adaptation among strains of different climatic origin.Key words: Xenorhabdus, temperature, psychrotroph, mesophile, fatty acid, isozyme.

Effect of temperature on preference for dietary unsaturated fatty acids in the Djungarian hamster (Phodopus sungorus)

2000 ◽  
Vol 78 (8) ◽  
pp. 1361-1368 ◽  
Author(s):  
Sara M Hiebert ◽  
Erin K Fulkerson ◽  
Kirstin T Lindermayer ◽  
Sarah D McClure
Keyword(s):  
Fatty Acids ◽  
Unsaturated Fatty Acids ◽  
Saturated Fat ◽  
Phodopus Sungorus ◽  
Effect Of Temperature ◽  
Djungarian Hamster ◽  
Mean Body Temperature ◽  
Unsaturated Fat ◽  
Warm Environment ◽  
Short Days

Previous studies have shown that hibernators preparing for winter prefer a diet rich in unsaturated fat. This study was designed to determine if a daily heterotherm, the Djungarian hamster (Phodopus sungorus), shows a similar preference when given simultaneous access to two diets, one rich in saturated fat and the other rich in unsaturated fat. In two experiments, hamsters that had been exposed to short days for 8-10 weeks were exposed to 8°C for 10 days. When half of these animals were moved to a warm environment (26-29°C), they developed a significantly lower preference for the unsaturated diet than controls that remained at 8°C (P < 0.01). This difference in preference disappeared when the experimental group was returned to 8°C (P = 0.4). Although mean body temperature (Tb) was significantly lower (mean difference = 0.35°C) in experimental animals in the cold environment, most animals did not enter daily torpor at any time during the experiment. Together, these results suggest that the large decreases in core Tb accompanying torpor, originally assumed to necessitate the incorporation of unsaturated fatty acids into cell membranes of hibernators and daily heterotherms, are not necessary to stimulate changes in food choice.

scholarly journals The Effect of Temperature on the Level and Biosynthesis of Unsaturated Fatty Acids in Diacylglycerols of Brassica napus Leaves

1988 ◽  
Vol 87 (4) ◽  
pp. 904-910 ◽  
Author(s):  
John P. Williams ◽  
Mobashsher U. Khan ◽  
Kirk Mitchell ◽  
Geoff Johnson
Keyword(s):  
Fatty Acids ◽  
Brassica Napus ◽  
Unsaturated Fatty Acids ◽  
Effect Of Temperature

Effect of temperature on preference for dietary unsaturated fatty acids in the Djungarian hamster (Phodopus sungorus)

2000 ◽  
Vol 78 (8) ◽  
pp. 1361-1368 ◽  
Author(s):  
Sara M. Hiebert ◽  
Erin K. Fulkerson ◽  
Kirstin T. Lindermayer ◽  
Sarah D. McClure
Keyword(s):  
Fatty Acids ◽  
Unsaturated Fatty Acids ◽  
Phodopus Sungorus ◽  
Effect Of Temperature ◽  
Djungarian Hamster

scholarly journals Effect of temperature on contents of essential highly unsaturated fatty acids in freshwater zooplankton

Limnologica ◽  
2011 ◽  
Vol 41 (4) ◽  
pp. 339-347 ◽  
Author(s):  
Michail I. Gladyshev ◽  
Vitaliy P. Semenchenko ◽  
Olga P. Dubovskaya ◽  
Elena B. Fefilova ◽  
Olesia N. Makhutova ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Unsaturated Fatty Acids ◽  
Effect Of Temperature ◽  
Highly Unsaturated Fatty Acids ◽  
Freshwater Zooplankton

scholarly journals Chia (Salvia hispanica L.) Seed Soaking, Germination, and Fatty Acid Behavior at Different Temperatures

Agriculture ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 498
Author(s):  
Daniel Cabrera-Santos ◽  
Cesar A. Ordoñez-Salanueva ◽  
Salvador Sampayo-Maldonado ◽  
Jorge E. Campos ◽  
Alma Orozco-Segovia ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Fatty Acid ◽  
Linolenic Acid ◽  
Fatty Acid Profile ◽  
Unsaturated Fatty Acids ◽  
Germination Rate ◽  
Seed Vigor ◽  
Effect Of Temperature ◽  
Salvia Hispanica ◽  
Salvia Hispanica L

The temperature reduces the viability and seed vigor; however, the effect of temperature on imbibition and fatty acid profile has not been studied. Chia (Salvia hispanica L.) seeds have a substantial quantity of oil, making them a potential study model for fatty acid metabolism. Therefore, we explore the effect of temperature (10, 20, and 30 °C) on chia seed imbibition, germination, and fatty acid profile by GC-MS. Imbibition FI occurs within the first hour in all the treatments; while FII and FIIend elapse with an hour of difference at 20 °C and 30 °C. The highest viability and germination rate were observed at 30 °C; while the highest concentrations of all fatty acids, except oleic acid, were observed at 20 °C. Maximum fatty acid concentrations were detected at FI and FIIend; while at 30 °C, different patterns for saturated and unsaturated fatty acids and three linolenic acid isomers were observed. A shorter FII is associated with earlier germination; the increase in concentration in fatty acids after 3 h and a negative correlation between linoleic and linolenic acid observed at 20 °C were related to a higher germination efficiency. At 30 °C, isomer formation is related to homeoviscous cell membrane adaptation.

THE EFFECT OF TEMPERATURE ON THE OIL CONTENT AND FATTY ACID COMPOSITION OF THE OILS FROM SEVERAL OIL SEED CROPS

1965 ◽  
Vol 43 (1) ◽  
pp. 63-69 ◽  
Author(s):  
David T. Canvin
Keyword(s):  
Fatty Acids ◽  
Fatty Acid Composition ◽  
Fatty Acid ◽  
Acid Composition ◽  
Castor Bean ◽  
Oil Content ◽  
Unsaturated Fatty Acids ◽  
Saturated Fatty Acids ◽  
Effect Of Temperature ◽  
Seed Crops

Plants of rape, safflower, sunflower, flax, and castor bean were grown at temperatures of 10, 16, 21, and 26.5 °C for the period of seed development. Oil content of sunflower, safflower, and castor bean was not affected by temperature. Highest oil content in rape and flax was found at the lowest temperature and a continual decrease was observed with increases in temperature. Fatty acid composition of the oil from safflower and castor bean was not affected by a change in temperature. In the other three species the amount of the more highly unsaturated fatty acids decreased as the temperature was increased. This decrease was accompanied by an increase in oleic acid. The levels of saturated fatty acids in all of the species were not affected by changes in temperature.

Production of unsaturated fatty acid from Rhizopus oligosporus with temperature shift strategy to prevent cardiovascular disease

2020 ◽  
Author(s):  
Naufal Hafizh ◽  
Mochamad Ramadhan Salehoddin ◽  
Tania Surya Utami ◽  
Rita Arbianti ◽  
Heri Hermansyah
Keyword(s):  
Cardiovascular Disease ◽  
Fatty Acid ◽  
Unsaturated Fatty Acid ◽  
Temperature Shift ◽  
Rhizopus Oligosporus ◽  
Shift Strategy
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