Lipids and fatty acids of the gastropod mollusc Cerethidea obtusa
TL;DR: The gastropod mollusc Cerithidea obtusa was examined for its lipids and fatty acids and the predominant fatty acids were myristic, palmitic, stearic, oleic, linolenic, arachidonic and eicosapentaenoic acids.
About: This article is published in Food Chemistry.The article was published on 1986-01-01. It has received 7 citations till now. The article focuses on the topics: Fatty acid & Polyunsaturated fatty acid.
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TL;DR: The total lipids from hepatopancreas of the horseshoe crabs, Tachypleus gigas and Carcinus 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 as discussed by the authors.
Abstract: Total lipids from hepatopancreas of the horseshoe crabs,Tachypleus gigas andCarcinoscorpius 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 forT. gigas and 38, 40 and 42 forC. 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.
14 citations
TL;DR: The air breathing fish Boleophthalmus boddaerti has been studied for its lipids and fatty acids of body flesh as mentioned in this paper, and nonpolar lipids identified were wax esters, steryl esters and sterols.
14 citations
Cites background from "Lipids and fatty acids of the gastr..."
...The high level of phospholipid is similar to other animals of the Sunderbans ecosystem, reported earlier (Dutta et al., 1986; Misra et al., 1986; Chattopadhyay, 1993)....
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..., 1989), gastropod molluscs (Dutta et al., 1986; Misra et al., 1986), and the bivalve (Chattopadhyay, 1993)....
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Book•
20 Jul 2018
TL;DR: This document summarizes current capabilities, research and operational priorities, and plans for further studies that were established at the 2015 USGS workshop on quantitative hazard assessments of earthquake-triggered landsliding and liquefaction in the Central American region.
Abstract: This comprehensive volume focuses exclusively on sea snails (or gastropods), which are popular food items and occupy an important role in the commercial shell craft industry. Familiar examples include conchs (highly sought after due to their mild flavor) and escargot, abalone, and periwinkle snails.
This book covers the profile (habitat, distribution, morphology, food and feeding, reproduction, conservation status, etc.) of about 180 species of commercial edible marine gastropod molluscs as well as their nutritional values, commercial importance, and pharmaceutical value. Also included is information on their prevalent diseases and parasites. The informative descriptions are presented in an easy-to-read style with neat illustrations.
13 citations
TL;DR: In this paper, the fatty acid composition of the edible snail Turbo coronatus from the Bahrain sea was determined by gas-liquid chromatography and methyl esters of fatty acids (FAMEs) were analyzed.
Abstract: Purpose – The purpose of this paper is to determine the fatty acid composition of the edible snail Turbo coronatus from the Bahrain sea.Design/methodology/approach – Total lipid content was extracted and methyl esters of fatty acids (FAMEs) were prepared and analyzed by gas chromatography.Findings – Gas‐liquid chromatography shows that saturated fatty acids (SFA) are the major forms of fatty acids, followed by polyunsaturated fatty acids (PUFA) and monounsaturated fatty acids (MUFA). The most abundant PUFA are linolenic acid (18:3n‐3), eicosapentaenoic acid (EPA 20:5n‐3), linoleic acid (18:2n‐6), and arachidonic acid (ARA 20:4n‐6), the MUFA 16:1 (n‐7), and the SFA 16:0, 14:0, 18:0 and 20:0. The sum of EPA and DHA is 8.04 per cent. The n‐3/n‐6 fatty acids ratio approximately (2:1) is within the range of marine molluscs. The principle differences in the fatty acid composition of Turbo coronatus than most marine molluscs is their low DHA (0.23±0.01 per cent), low PUFA (40.92 per cent), and high SFA contents ...
12 citations
TL;DR: The evaluation of the nutritional traits of P. candei and P. aspera shows that these limpets are good sources of essential fatty acids for human health and that the distribution of limpets is a key factor when determining its dietary value.
Abstract: Patella aspera and Patella candei are two abundant limpet species commercially exploited and often used as a delicacy in the Madeira Archipelago, but there is a lack of scientific knowledge about these species. This study investigated the nutritional value and fatty acids of this species across the coast of Madeira Archipelago. The lipid content (7.71–12.60% dw), proteins (48.22–64.09% dw), ashes (11.12–23.12% dw) and carbohydrates (4.5–10.9% dw) were determined in P. aspera and P. candei at different collection sites. In the fatty acid composition, a total of 23 fatty acids (FAs) were identified. P. aspera showed the highest amount of monounsaturated FAs (MUFAs, 35.02%) and eicosapentaenoic acid (EPA, 12.59%), and P. candei presented the highest level of oleic acid (OA, 28.25%), polyunsaturated FAs (PUFAs, 27.26%) and arachidonic acid (AA, 11.38%). The Σω3/Σω6 dietary ratio presented levels > 0.25 suggesting that these marine molluscs are a good source of ω3 for dietary intake. Within each specie significant differences (p < 0.05) across sites were observed. High amounts of essential nutrients were shown in Patella species collected at Selvagens site while poorest levels were shown in Patella collected at Lido. The evaluation of the nutritional traits of P. candei and P. aspera shows that these limpets are good sources of essential fatty acids for human health and that the distribution of limpets is a key factor when determining its dietary value.
8 citations
References
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TL;DR: The lipid decomposition studies in frozen fish have led to the development of a simple and rapid method for the extraction and purification of lipids from biological materials that has been applied to fish muscle and may easily be adapted to use with other tissues.
Abstract: Lipid decomposition studies in frozen fish have led to the development of a simple and rapid method for the extraction and purification of lipids from biological materials. The entire procedure can...
46,099 citations
TL;DR: If the highest accuracy was not required, the following manipulations simplified and speeded multiple total phosphorus determinations on the eluates from column chromatographic separations.
12,381 citations
TL;DR: A chemical reagent spray specific for phosphate esters, based on molybdenum blue, gives an instantaneous, specific reaction with phospholipids on silica gel or alumina thin layer chromatography (TLC) plates.
2,085 citations
TL;DR: Unlike arachidonic acid, eicosapentaenoic acid (C20:5omega-3, E.P.A.) does not induce platelet aggregation in human platelet-rich plasma (P.R.X.A.P.), probably because of the formation of thromboxane A3 (T.G.I3) which does not have platelet aggregating properties.
1,632 citations