The fatty acid, sterol and hydrocarbon compositions of oil produced by a new strain of Rhodotorula glutinis isolated from soil and grown on molasses, were determined. The major constituent fatty acids were: palmitic (37%) oleic (47%) and linoleic (8%). The major sterols were campesterol (42%) and stigmasterol (27%) and the major hydrocarbons were n‐C23 (37%), iso‐C29 (30%) and n‐C21 (19%). Minor constituents in each class of lipids were also detected and estimated. The oil produced was 54% on a dry weight basis. The fatty acid composition was found to be close to that of palm oil. Copyright © 1984 John Wiley &amp; Sons, Ltd

S MISRA

A GHOSH

J DUTTA

University of Calcutta (informally known as Calcutta University or CU) is a collegiate public state university located in Kolkata, West Bengal, India.&nbsp;Within India it is recognized as a &quot;Five-Star University&quot; and accredited &quot;A&quot; Grade by National Assessment and Accreditation Council.

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The University of Calcutta has secured the Fifth position among the Universities of India in the prestigious &quot;Indian University Ranking 2019&quot; list, released by the NIRF of the Ministry of Human Resource Development, Government of India.

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It was established on 24 January 1857, and was one of the first institutions in Asia to be established as a multidisciplinary and Western-style university. Its alumni and faculty include several heads of state, heads of government, social reformers, prominent artists, only academy award winner and Dirac medal winner in India, many Fellows of the Royal Society and five Nobel laureates as of 2019 which is highest in South Asia.

University Of Calcutta

Journal of the Science of Food and Agriculture

Total lipids from hepatopancreas of the horseshoe crabs, Tachypleus gigas and Carcinoscorpius rotundicauda, obtained in 7.6 and 3.3% wet weight respective yields, were fractionated by various chromatographic techniques and identified by gas-liquid chromatography and spectroscopic methods. Fatty acid-containing lipids were rich in 16:0 (8.0-25%), 18:1ω9 (6.9-22%) and 18:2ω6 (6.8-18.5%); appreciable amounts of 16:1ω7, 18:3ω3, 20:5ω3 and 22:6ω3 were also present. The level of 26:0 in the hydrocarbon fractions was unusually high (64 and 68%). Carbon chain lengths of major wax esters were 44, 46 and 48 for T. gigas and 38, 40 and 42 for C. rotundicauda. 1-O-Alkyl diglycerides were 7.2 and 9.1% of the total lipids in the two species and contained 14:0(20%), 16:0(60%) and 18:0(20%) alkyl chains along with a relatively higher percentage (32-35%) of saturated fatty acids. High levels of cholesterol (>50% of total sterol) in the free and combined state were encountered in both samples, phospholipid contents being 40 and 35%, respectively, and contained highest levels of unsaturated fatty acids. © 1989 American Oil Chemists' Society.

Lipids

Lipids and fatty acids of the horseshoe crabs Tachypleus gigas and Carcinoscorpius rotundicauda

Porteresia coarctata collected, at Prentice and Chuksar Islands of the Sunderban mangrove ecosystem, was studied for its lipid composition. Hydrocarbon, wax ester, sterol esters, triacylglycerols, sterols and terpenoids, were all found in higher proportions in the Prentice Island sample. Palmitic acid was the major fatty acid in all fractions except for the steryl esters of P. coarctata collected from Prentice Island, where oleic and linoleic acids were the major components. Sterols found were, sitosterol, stigmasterol, campesterol and cholesterol, of which, sitosterol and stigmasterol were the major components. Terpenoids present were, β-amyrin, α-amyrin, lupeol, betulin, oleanolic acid and ursolic acid, of which, lupeol and oleanolic acid were the major components. Quantitative variations of the lipid constituents were found between the two samples studied. © 1988.

Phytochemistry

Lipid composition of Porteresia coarctata from two different mangrove habitats in India

Seven species of fresh mangrove leaves were found to contain saturated normal and branched chain hydrocarbons, mostly between C16 and C36 with both odd and even carbon numbers. Significant quantitative variations were found between species. Wax esters were found to contain fatty acids with chain lengths between C12 and C22. Palmitic (16:0) and stearic (18:0) acids were the major component saturated fatty acids, whereas, oleic (18:1) and linolenic (18:3) acids were the major unsaturate α-acids. Chain lengths of the alcohols of wax esters were between C14 and C36. Significant quantitative and minor qualitative differences were noted in the alcohol composition of wax esters. Hydrocarbon and wax ester compositions were characterised by the presence of low M, components in high proportions. © 1987.

Hydrocarbons and wax esters from seven species of mangrove leaves

Mangrove plant leaves of Avicennia officinalis, Acanthus illicifolius and Bruguiera gymnorhiza, grown under tidal water stress, were found to biosynthesize higher proportions of hydrocarbons, wax esters, sterol esters, triglycerides, sterols and low-M, terpenes, compared to the plants grown normally. Hydrocarbons and n-alcohols of wax esters, with longer chain lengths were found in higher proportions in the plants grown normally. Higher proportions of unsaturated n-alcohols of wax esters were present in the leaves of periodically submerged plants. Proportions of unsaturated fatty acids of wax esters, sterol esters and triglycerides were also higher in the submerged plants. Sitosterol, stigmasterol and campesterol of the sterol esters, were higher in submerged plants, whereas 28-isofucosterol was higher in normal plants. Of the free sterols, sitosterol was higher in submerged plants, whereas stigmast-7-en-3β-ol and campesterol were higher in normal plants and 28-isofucosterol was found only in submerged plants. Pentacyclic triterpenoids were found only in normal plants, whereas, the submerged plants contained low-M, terpenes in higher proportions. © 1986.

Effect on the leaf lipids of three species of mangrove of periodic submergence in tidal water

The isolation of pentacyclic triterpenoids from seven species of fresh mangrove leaves using a simple and rapid method is described. The leaves were homogenized using chloroform-methanol and the extract was diluted with water to precipitate out triterpenoids which were separated into neutral and acidic fractions. These were analysed by gas-liquid chromatography as acetyl and trimethylsilyl ether derivatives on a 3% OV-17 column. Sterols were isolated from the chloroform layer by preparative thin layer chromatography and were analysed by gas-liquid chromatography as their trimethylsilyl ether derivatives on a 3% OV-17 column. The triterpenoids found were α-amyrin, β-amyrin, lupeol, oleanolic acid and ursolic acid in most of the samples. Sterols found in all the samples were cholesterol, campesterol, stigmasterol, sitosterol and stigmast-7-en-3β-ol. Retention indices of the triterpenoids and sterols have been determined. © 1985.

Journal	Journal of the Science of Food and Agriculture
Publisher	-
ISSN	0022-5142