Phosphoglycerides

Weete, John D.

doi:10.1007/978-1-4684-2829-2_8

Cited by 4 publications

(4 citation statements)

References 103 publications

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“…Partly significant, but not noteworthy, differences regarding the yields of biomass, lipid contents, and the targeted margaroleic acid were found for the mycelia cultured at 16 and 24 °C (data not shown). In contrast to earlier findings for other fungi, ,,, a reduced cultivation temperature did not lead to an increased production of unsaturated fatty acids in the present study. At 37 °C, no growth was observed.…”

Section: Resultscontrasting

confidence: 99%

“…Fungal lipid biosynthesis is well-known to be modulated by culture parameters ,, which allows for a targeted synthesis of desired compounds. Therefore, the growth and lipid and fatty acid production of MHY were investigated in detail.…”

Section: Resultsmentioning

confidence: 99%

“…They are traditionally sourced from plants or animals. In recent years, microbial production approaches have been studied extensively, in which a variety of fungi were found to be rich sources of oils containing, inter alia, valuable unsaturated fatty acids. − Yeasts, including Saccharomyces cerevisiae and especially oleaginous yeasts, have been intensely investigated concerning fatty acid production and modulation of the fatty acid pattern by, e.g., breeding or metabolic engineering. − Filamentous fungi have been less well studied in this context. However, representatives belonging to the genus Mortierella were reported to accumulate considerable amounts of desired polyunsaturated fatty acids (PUFA), such as arachidonic acid [20:4(5 Z ,8 Z ,11 Z ,14 Z )] and eicosapentaenoic acid [20:5(5 Z ,8 Z ,11 Z ,14 Z ,17 Z )], alongside naturally scarce odd-chain fatty acids. − Fermentative approaches were undergone to optimize and modulate fatty acid production.…”

Section: Introductionmentioning

confidence: 99%

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Biocatalytic Production of Odor-Active Fatty Aldehydes from Fungal Lipids

Kanter,

Honold,

Luh

et al. 2023

J. Agric. Food Chem.

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Odor-active fatty aldehydes are important compounds for the flavor and fragrance industry. By a coupled enzymatic reaction using an α-dioxygenase (α-DOX) and an aldehyde dehydrogenase (FALDH), scarcely available aldehydes from the biotransformation of margaroleic acid [17:1(9Z)] were characterized and have shown highly interesting odor profiles, including citrus-like, soapy, herbaceous, and savory notes. In particular, (Z)-8-hexadecenal and (Z)-7-pentadecenal exhibited notable meaty odor characteristics. Submerged cultivation of Mortierella hyalina revealed the accumulation of the above-mentioned, naturally uncommon fatty acid 17:1(9Z). Its production was significantly increased by the modulation of culture conditions, whereas the highest accumulation was observed after 4 days at 24 °C and L-isoleucine supplementation. The lipase-, α-DOX-, and FALDHmediated biotransformation of M. hyalina lipid extract resulted in a complex aldehyde mixture with a high aldehyde yield of ∼50%. The odor qualities of the formed aldehydes were assessed by means of gas chromatography−olfactometry, and several of the obtained fatty aldehydes have been sensorially described for the first time. To assess the aldehyde mixture's potential as a flavor ingredient, a sensory evaluation was conducted. The obtained product exhibited intense citrus-like, green, and soapy odor impressions.

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Section: Resultscontrasting

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Biocatalytic Production of Odor-Active Fatty Aldehydes from Fungal Lipids

Kanter,

Honold,

Luh

et al. 2023

J. Agric. Food Chem.

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“…Development in each of these solvents was for approximately 1-1.5 h. Plates were then air-dried, either sprayed with sulfuric acid or exposed to iodine vapors, and visually examined for changes in isolated phospholipid fractions. The four phosphoglycerides examined in this study have been previously isolated from Aspergillus (Weete 1974). Analysis of other lipids was conducted by preparing Silica Gel G TLC plates (without NaOH) and developing with a solvent containing heptane:petroleum ether:diethyl ether:glacial acetic acid (60:20:20:1) for approximately 1 h. Plates were then air-dried, exposed to iodine vapors, and visually examined for changes in isolated lipid fractions.…”

Section: Analysis Of Myceliamentioning

confidence: 99%

Inhibition of Aspergillus Growth and Extracellular Aflatoxin Accumulation by Sorbic Acid and Derivatives of Fatty Acids

Chipley¹,

Story²,

Todd³

et al. 1981

Journal of Food Safety

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A study was conducted to determine the effects of sorbic acid and several derivatives of fatty acids (amides, aminimides, and monoglycerides) upon toxigenic cultures of Aspergillus flavus and A. parasiticus. A synthetic medium was inoculated with spores, incubated for 48 h at 27°C, and then supplemented with sorbic acid and fatty acid derivatives. Cultures were then incubated for an additional 5 days. Aflatoxins were extracted, separated, and quantitated. Mycelial mats were dried, weighed, and analyzed for lipid and mineral content. Cerulenin (8 μg/ml) was the most effective fatty acid derivative examined, reducing mycelial growth by 37% and completely inhibiting extracellular accumulation of aflatoxins. Other derivatives, in decreasing order of effectiveness, included M‐20 (an aminimide), lauribic, and lauricidin. Mycelia grown in the presence of fatty acid derivatives contained less phosphorus, potassium, magnesium, phosphatidyl ethanolamine, phosphatidyl serine, cholesterol, and triglycerides, but more cardiolipin, phosphatidyl choline, free fatty acids, fatty acid esters, and diglycerides. Levels of monoglycerides and cholesterol esters remained essentially unchanged. Inhibition by sorbic acid was nonspecific, affecting both mycelial growth and extracellular aflatoxin accumulation to approximately the same extent. Utilization of fatty acid derivatives for determining mechanisms of aflatoxin accumulation and lipid biosynthesis appears promising.

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The positional distribution of fatty acids in phospholipids ofFusarium oxysporum

Joshi

Mathur

1987

Folia Microbiol

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Phosphoglycerides

Cited by 4 publications

References 103 publications

Biocatalytic Production of Odor-Active Fatty Aldehydes from Fungal Lipids

Biocatalytic Production of Odor-Active Fatty Aldehydes from Fungal Lipids

Inhibition of Aspergillus Growth and Extracellular Aflatoxin Accumulation by Sorbic Acid and Derivatives of Fatty Acids

The positional distribution of fatty acids in phospholipids ofFusarium oxysporum

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