Relationships among total lipid, lipid classes, and polychlorinated biphenyl concentrations in two indigenous populations of ribbed mussels (Geukensia demissa) over an annual cycle

2001 ◽  
Vol 20 (3) ◽  
pp. 575-581 ◽  
Author(s):  
Barbara J. Bergen ◽  
William G. Nelson ◽  
James G. Quinn ◽  
Saro Jayaraman
Keyword(s):  
Total Lipid ◽  
Annual Cycle ◽  
Polychlorinated Biphenyl ◽  
Lipid Classes ◽  
Indigenous Populations ◽  
Geukensia Demissa ◽  
Ribbed Mussels

scholarly journals Content and composition of lipid classes, fatty acid from \(\textit{Sargassum}\) seaweed collected at Con Dao and Van Phong bay

2021 ◽  
Vol 21 (3) ◽  
pp. 311-318
Author(s):  
Thu Hue Pham ◽  
Van Tuyen Anh Nguyen Nguyen ◽  
Yen Kieu Thi Hoang ◽  
Nguyen Nguyen ◽  
Hai Nam Hoang ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Fatty Acid ◽  
Free Fatty Acids ◽  
Total Lipid ◽  
Polar Lipid ◽  
Brown Seaweed ◽  
Monounsaturated Fatty Acids ◽  
Lipid Classes ◽  
Average Content ◽  
Fresh Weight

This study studied the content and composition of the total lipid, lipid classes and fatty acids in 13 brown seaweed Sargassum species collected from Con Dao and Van Phong, Vietnam. The total lipid has a low content and varies among species from 0.10–1.70% of the fresh weight. From 13 species, seven lipid classes including polar lipid (Pol), free fatty acids (FFA), sterol (ST), hydrocarbon and wax (HW), triacylglycerol (TG), diacylglycerol (DG), and monoalkydiacylglycerol (MADG). Using the GC-FID technique, we have identified 29 fatty acids classified into 3 groups of saturated fatty acid, monounsaturated fatty acids, polyunsaturated fatty acids with an average content of 44.93%, 24.57% and 27.44%, respectively. Among those, many value fatty acids have been detected with high content such as C18:3n-3, C20:4n-6, 20:5n-3, and 22:6n-3. The lipid of 13 brown seaweed Sargassum species also fully contains omega-3,6,9 fatty acids with the content of 9.28%, 16.28% and 16.63%, respectively.

scholarly journals RESEARCH ON THE COMPONENT OF LIPID CLASSES, FATTY ACID, AMINO ACIDS FROM EGG AND BODY OF SEA URCHIN TRIPNEUSTES GRATILLA (LINNAEUS, 1758)

2018 ◽  
Vol 56 (4A) ◽  
pp. 30
Author(s):  
Kim Hoa Thi Dinh
Keyword(s):  
Amino Acids ◽  
Fatty Acids ◽  
Fatty Acid ◽  
Sea Urchin ◽  
Total Lipid ◽  
Yellow Sea ◽  
Lipid Classes ◽  
The Yellow Sea ◽  
Viet Nam ◽  
Tripneustes Gratilla

ABSTRACT – HCTN 06The Sea urchin Tripneustes gratilla (Linnaeus, 1758) is a famous species of invertebrate member of the phylum Echinodermata of marine animals living in shallow tropical water. In Viet Nam, it is usually called by the name of yellow sea urchin. This species is mentioned much about its economic and commerce properties. Recently, many researchers have been paying attention to sea urchin because of its positive effect on human health. In terms of medicine and nutrition, the egg of yellow sea urchin was rich in Polyunsaturated Fatty Acids (PUFAs) and essential amino acids. In this research, we focused on determining the total lipid contents, the components of lipid classes and the compositions and contents of fatty acids, amino acids from the body and the egg of the yellow sea urchin T. gratilla (Linnaeus, 1758) collected in Hon Tam, Nha Trang, Khanh Hoa, Viet Nam in 2016. Although the yellow sea urchin T. gratilla has low percentage of total lipid in fresh weigh basis, they are full of essential lipid ingredients such as Wax and Hydrocabon (H + W), Triacylglycerol (TG), Monodiacylglycerol MDAG, Free Fatty Acid (FFA), sterol (ST), and Polar Lipid (PL). In both egg and body samples palmitic acid (16:0) was the most abundant fatty acid with the proportion of about 25%. In addition, arachidonic acid (20:4n-6) is dominent Omega-6 fatty acid in the Monounsaturated Fatty Acid group (MUFA). Furthermore, the research result also showed the very high percentages of omega-3 fatty acids in the egg and body of T. gratilla, with the total contents of 13.97% and 20.67% respectively, especially the presence of eicosapentaenoic fatty acid (C20:5n-3, EPA), a very valuable fatty acid. By the HPLC method, the research also found 17 amino acids in the egg and body of T. gratilla with the existence of 7 essential amino acids.Keywords: Tripneustes gratilla, lipid classes, yellow sea urchin, echinodermata, fatty acid content. 

The lipid composition of Euphausia superba Dana in relation to the nutritional value of Phaeocystis pouchetii (Hariot) Lagerheim

1993 ◽  
Vol 5 (2) ◽  
pp. 169-177 ◽  
Author(s):  
P. Virtue ◽  
P. D. Nichols ◽  
S. Nicol ◽  
A. McMinn ◽  
E. L. Sikes
Keyword(s):  
Fatty Acids ◽  
Fatty Acid ◽  
Total Lipid ◽  
Phaeodactylum Tricornutum ◽  
Euphausia Superba ◽  
Lipid Classes ◽  
Food Sources ◽  
Significant Difference ◽  
Phaeocystis Pouchetii ◽  
Chain Fatty Acids

The fatty acid profiles of Euphausia superba, the Antarctic prymnesiophyte, Phaeocystis pouchetii, and a temperate diatom, Phaeodactylum tricornutum were analysed and compared. The lipid content, lipid class, fatty acid and sterol composition of E. superba fed on each cultured phytoplankton and a mixed diet of both species, were determined. No significant difference was found between total lipid levels of E. superba reared on each of these different diets. Phaeocystis pouchetii, although deficient in a number of the essential fatty acids, is apparently an adequate food source for E. superba. The proportion of polyenoic fatty acids varied within lipid classes although there was no significant difference between levels of the long chain polyunsaturate 20:5(n-3) in the total lipid of E. superba fed on these diets. This acid was found to be less than 1% of the total lipid in Phaeocystis pouchetii compared to 37% in Phaeodactylum tricornutum. This suggests that krill may possess the ability to convert exogenous shorter chain fatty acids to 20:5(n-3) and 22:6(n-3). Significant differences were detected in the isomeric ratio of 16:1(n-7c)/16:0 between krill fed the diatom compared to the prymnesiophyte diet. Significant differences were also detected in several shorter chain fatty acids and between fatty acids within their lipid classes. Such differences may have the potential to be used as biochemical signatures to provide information on food sources and possible feeding grounds of E. superba. Phaeocystis pouchetii in a very late stationary phase, although not used in this feeding study, was found to contain 11% of 22:6(n-3) for which there are few substantive sources in natural algal populations.

scholarly journals Study on total lipid content, lipid class composition of some fire and soft corals collected in Nha Trang, Vietnam

2019 ◽  
Vol 19 (1) ◽  
pp. 87-91
Author(s):  
Nguyen Ba Kien ◽  
Trinh Thi Thu Huong ◽  
Luu Van Huyen ◽  
Nguyen Thanh Vinh ◽  
Tran Duy Phong ◽  
...  
Keyword(s):  
Lipid Class ◽  
Total Lipid ◽  
Lipid Content ◽  
Coral Species ◽  
Total Lipid Content ◽  
Lipid Classes ◽  
Soft Corals ◽  
Lipid Class Composition ◽  
Sinularia Flexibilis ◽  
Class Composition

For the first time, the total lipid content and lipid class composition of  the Vietnamese soft corals (Sinularia brassica, Sinularia flexibilis) and fire corals (Millepora dichotoma, Millepora platyphylla) were investigated. The results indicated that the total lipid content of the investigated species was significantly different. Compositions of the lipid classes were analyzed using TLC and image analysis program Sorbfil TLC Videodensitometer DV and the results showed that phospholipids (PL, 10.91–16.02%), monoalkyldiacylglycerols (MADAG, 20.69-39.92%) and hydrocarbon wax (HW, 29.83-37.17%) were the main lipid classes of the total lipid in soft coral species. Meanwhile, PL (24.11-33.23%), TG (14.27–34.92%), ST (10.10–14.50%) and HW (12.08–19.95%) were predominant in fire coral species. ST, TG and FFA contents in soft and fire corals were at low level. DG was only present in the Sinularia flexibilis but not in other studied corals.

scholarly journals Studies of E. coli and Coliform Bacteria Contamination in Mussels (Geukensia demissa) Collected from Guion Creek and Its Correlation to Water Flow Rate

2007 ◽  
Vol 6 (3) ◽  
Author(s):  
Pretima Persad ◽  
Anna Yeung-Cheung
Keyword(s):  
Water Flow ◽  
Flow Rate ◽  
Negative Correlation ◽  
Water Flow Rate ◽  
Coliform Bacteria ◽  
Geukensia Demissa ◽  
Contributing Factors ◽  
E Coli ◽  
Harbor Island ◽  
Ribbed Mussels

Ribbed mussels (Geukensia demissa) were collected from a highly contaminated Guion Creek, Mamaroneck Harbor, NY and were compared with Harbor Island Park and Shore Acres Beach, for amounts of bacteria. Mussels were also collected from a pristine beach, Read Sanctuary, Rye. The water flow rate was measured at all sites. The results showed that the amount of E. coli and coliform bacteria recovered from mussels were significantly higher in Guion Creek and its water flow rate was significantly lower when compared to three other sites. On the contrary, the highest water flow rate and lowest amounts of bacteria were recovered from mussels collected at Read Sanctuary. A negative correlation of water flow rate with amounts of E. coli and coliform recovered from mussels at all sites was found. Results suggested that a slow water flow rate in Guion Creek might be one of the contributing factors to the high bacterial loads.

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