Nitrate utilization and growth in biotin-deficient Aspergillus nidulans

1975 ◽  
Vol 21 (6) ◽  
pp. 807-810 ◽  
Author(s):  
J. D. Desai ◽  
V. V. Modi
Keyword(s):  
Fatty Acid ◽  
Nitrate Reductase ◽  
Nitrogen Source ◽  
Aspergillus Nidulans ◽  
Total Fatty Acid ◽  
Acid Content ◽  
Fatty Acid Content ◽  
Sole Nitrogen Source ◽  
Total Fatty Acid Content ◽  
Normal Culture

A marked increase in the cellular synthesis accompanied by a decrease in the total fatty acid content was observed when Aspergillus nidulans was grown on NH4NO3 as a sole nitrogen source, in the medium containing avidin. Because of the increased uptake of NH4+, the level of NH4+ was lowered in the medium; as a result there is early uptake and assimilation of nitrate by a biotin-deficient culture as compared with the normal culture of A. nidulans. At about 17 mM concentration, NH4+ repressed the activity of nitrate reductase. The regulation of NO3− uptake and its assimilation with respect to the growth of A. nidulans have been discussed.

Effect of concentration of DHA nutrient-enhanced Artemia on the growth and physiology of the ridgetail white prawn, Exopalaemon carinicauda (Decapoda, Caridea, Palaemonidae)

Crustaceana ◽  
2021 ◽  
Vol 94 (1) ◽  
pp. 29-43
Author(s):  
Yu Wang ◽  
Guangguang Li ◽  
Zhen Han ◽  
Guangwei Hu ◽  
Binlun Yan ◽  
...  
Keyword(s):  
Fatty Acid ◽  
Total Fatty Acid ◽  
Acid Content ◽  
Specific Growth ◽  
Fatty Acid Content ◽  
Optimal Choice ◽  
Water Volume ◽  
Control Group ◽  
Exopalaemon Carinicauda ◽  
Total Fatty Acid Content

Abstract Prawns of the species Exopalaemon carinicauda were fed with Artemia that had been enriched by either 1, or 3, or 5 g/l DHA powder. The feeding dose of Artemia offered to E. carinicauda was calculated according to the water volume, and maintained at 1-3 individuals/ml. After nutritional enrichment, the ratio of DHA content to total fatty acid content in Artemia was the highest (3.32%) after being fed 3 g/l DHA powder. The ratio of DHA content to total fatty acid content in the muscle tissue of E. carinicauda prawns fed with Artemia enhanced with 3 g/l DHA powder was also the highest (4.40%) achieved. Furthermore, when the concentration of fish oil DHA powder was 3 g/l, the survival rate of the prawns was significantly higher than in the control group, with the specific growth rate and weight gain reaching 11.39%/day, and 95.74%, respectively. In addition, the DHA-enhanced Artemia, at different concentrations, increased the non-specific immunity of individuals. The enzyme activity of T-AOC, SOD and AKP in the respective feeding groups of prawns was significantly higher, compared to the control group. Thus, Artemia enriched by 3 g/l DHA powder is proposed as an optimal choice for the offspring breeding of E. carinicauda.

Cholesterol and total fatty acid content inm. longissimus dorsiof Mangalitsa and Swedish Landrace

2012 ◽  
Vol 41 (2) ◽  
pp. 161-171 ◽  
Author(s):  
N. Parunović ◽  
M. Petrović ◽  
V. Matekalo-Sverak ◽  
D. Radojković ◽  
D. Vranić ◽  
...  
Keyword(s):  
Fatty Acid ◽  
Total Fatty Acid ◽  
Acid Content ◽  
Fatty Acid Content ◽  
Total Fatty Acid Content

scholarly journals Occurrence of long-chain fatty acids and glycolipids in the cell-envelope fractions of baker's yeast

1971 ◽  
Vol 125 (4) ◽  
pp. 963-969 ◽  
Author(s):  
T. Nurminen ◽  
H. Suomalainen
Keyword(s):  
Fatty Acids ◽  
Fatty Acid ◽  
Total Fatty Acid ◽  
Acid Content ◽  
Cell Walls ◽  
Neutral Lipids ◽  
Fatty Acid Content ◽  
Baker's Yeast ◽  
Total Fatty Acid Content ◽  
Long Chain

1. The total yield of fatty acids from the whole envelopes was markedly higher than that obtained from the ordinary cell walls. In both samples the major fatty acids were C16 and C18 acids. 2. The whole envelopes contained C18 acids and long-chain (C19–C26) fatty acids, in a higher proportion than did the ordinary cell walls. Fifteen fatty acids with more than 18 carbon atoms were identified, among which 2-hydroxy-C26:0 and C26:0 acids predominated. 3. A complex sphingolipid containing inositol, phosphorus and mannose was isolated from the whole cell envelopes. The main fatty acids of this lipid were 2-hydroxy-C26:0 and C26:0 acids. It was concluded that this sphingolipid is present both in the ordinary cell wall and in the plasma membrane of baker's yeast. 4. The neutral lipids amounted to over 50% and the glycerophosphatides to about 30% of the total fatty acid content of the whole envelope. The major fatty acids in these lipids were C16:1, C18:1 and C16:0 acids. The proportion of fatty acids with more than 18 carbon atoms was lowest in the neutral lipids, whereas the neutral glycolipids contained the highest percentage of these fatty acids. Acidic glycolipids amounted to 14% of the total fatty acid content of the whole envelope. The presence of a cerebroside sulphate in this lipid fraction was demonstrated, whereas the high content of 2-hydroxy-C26:0 acid found is caused by the complex inositol- and mannose-containing sphingolipid.

Total fatty acid content, antioxidant composition, antioxidant activity, and content of oil from crambe seeds cultivated with phosphorus

2017 ◽  
Vol 119 (10) ◽  
pp. 1700043 ◽  
Author(s):  
Caroline Mariana de Aguiar ◽  
Silvio Cesar Sampaio ◽  
Kátia Andressa Santos ◽  
Edson Antônio da Silva ◽  
Pitágoras Augusto Piana ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Fatty Acid ◽  
Total Fatty Acid ◽  
Acid Content ◽  
Fatty Acid Content ◽  
Total Fatty Acid Content

scholarly journals Fatty Acid Composition in Blubber, Liver, and Muscle of Marine Mammals in the Southern Baltic Sea

Animals ◽  
2020 ◽  
Vol 10 (9) ◽  
pp. 1509
Author(s):  
Dirk Dannenberger ◽  
Ramona Möller ◽  
Linda Westphal ◽  
Timo Moritz ◽  
Michael Dähne ◽  
...  
Keyword(s):  
Fatty Acid ◽  
Baltic Sea ◽  
Total Fatty Acid ◽  
Acid Content ◽  
Fatty Acid Content ◽  
Harbour Porpoise ◽  
Total Fatty Acid Content ◽  
The Baltic Sea ◽  
Top Predators ◽  
The Baltic

To date, only limited results on the fatty composition in different tissues of the top predators in the Baltic Sea are available. In the current study, tissue samples of blubber, skeletal muscle, and liver from 8 harbour porpoise (Phocoena phocoena) and 17 grey seals (Halichoerus grypus) in the Baltic Sea off Mecklenburg-Western Pomerania were included in the investigation. While the total fatty acid content in liver and blubber tissue revealed no differences between both species, the total fatty acid content of muscle tissue was significantly differentand showed higher concentrations in harbour porpoise muscle compared with grey seals. The most abundant fatty acids in the blubber of grey seals and harbour porpoises (18:1cis-9, 16:1cis-9, 16:0 and 22:6n-3) were present in similar quantities and ratios to each other as known from other marine top predators. If future studies can show that differences in tissue fatty acid content are caused by variation in the nutritional status, and this may lead to the development of a more objective assessment of body condition in seals and porpoises recovered via stranding schemes.

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