scholarly journals Seasonal Composition of Lipids, Fatty Acids Pigments in the Brown Alga <i>Sargassum pallidum</i>: The Potential for Health

2016 ◽  
Vol 06 (04) ◽  
pp. 498-523 ◽  
Author(s):  
Natalia Gerasimenko ◽  
Stepan Logvinov
1997 ◽  
Vol 46 (5) ◽  
pp. 871-877 ◽  
Author(s):  
Gregory L. Rorrer ◽  
Hye-Dong Yoo ◽  
Yao-Ming Huang ◽  
Christine Hayden ◽  
William H. Gerwick

2013 ◽  
Vol 49 (5) ◽  
pp. 927-929 ◽  
Author(s):  
N. I. Gerasimenko ◽  
S. V. Logvinov ◽  
N. G. Busarova ◽  
E. A. Martyyas

2003 ◽  
Vol 58 (3-4) ◽  
pp. 207-214 ◽  
Author(s):  
Kangsadan Boonprab ◽  
Kenji Matsuia ◽  
Miyuki Yoshida ◽  
Yoshihiko Akakabe ◽  
Anong Chirapart ◽  
...  

Some marine algae can form volatile aldehydes such as n-hexanal, hexenals, and nonenals. In higher plants it is well established that these short-chain aldehydes are formed from C18 fatty acids via actions of lipoxygenase and fatty acid hydroperoxide lyase, however, the biosynthetic pathway in marine algae has not been fully established yet. A brown alga, Laminaria angustata, forms relatively higher amounts of C6- and C9-aldehydes. When linoleic acid was added to a homogenate prepared from the fronds of this algae, formation of n-hexanal was observed. When glutathione peroxidase was added to the reaction mixture concomitant with glutathione, the formation of n-hexanal from linoleic acid was inhibited, and oxygenated fatty acids accumulated. By chemical analyses one of the major oxygenated fatty acids was shown to be (S)-13-hydroxy-(Z, E)-9, 11-octadecadienoic acid. Therefore, it is assumed that n-hexanal is formed from linoleic acid via a sequential action of lipoxygenase and fatty acid hydroperoxide lyase (HPL), by an almost similar pathway as the counterpart found in higher plants. HPL partially purified from the fronds has a rather strict substrate specificity, and only 13-hydroperoxide of linoleic acid, and 15-hydroperoxide of arachidonic acid are the essentially suitable substrates for the enzyme. By surveying various species of marine algae including Phaeophyta, Rhodophyta and Chlorophyta it was shown that almost all the marine algae have HPL activity. Thus, a wide distribution of the enzyme is expected.


2018 ◽  
Vol 47 (3) ◽  
pp. 523-531
Author(s):  
Nermin Adel El Semary ◽  
Howrah Mahdi ◽  
Abrar Alnoaim ◽  
Kawther Heji Alsofan ◽  
Sarah Ibrahim Almsthi ◽  
...  

AlAhsa oasis in Saudi Arabia is one of the largest oases in the world. Algae, from this region have been under-explored in the past decades. A study was conducted with Chlorococcum strain to produce biofuel alongside the seaweed Hormophysa cuneiformis. Gas Chromatography/Mass Spectrometry of fatty acid composition showed that the biodiesel obtained had limited number of unsaturated fatty acids as compared to the number of saturated fatty acids present, which indicates the stability of the produced biodiesel. Thereby the use of algal biomass for the production of biofuel is feasible. Moreover, the biomass may serve other different biotechnological applications. To further test this hypothesis, the aqueous extract of two different algae; one derived from the blue green alga (cyanobacterium) Phormidium sp. and the other from brown alga Hormophysa cuneiformis was used as liquid biofertiliser at concentrations of 50 and 10% of both algae. Sterilized Vigna seeds were soaked in the extracts for two days. Seeds were sown in sterilized soil and the germination percentage as well as shoot and root lengths were recorded for developing seedlings. The results showed that there was a significant increase in seed germination rate compared to control. Similarly, there was a significant increment in the length of root and root system compared to control with the 50% aqueous extract concentration being highest in growth parameters for brown alga followed by blue-green alga possibly due to the presence of growth stimulants in these extracts.


2010 ◽  
Vol 57 (2) ◽  
pp. 205-211 ◽  
Author(s):  
N. I. Gerasimenko ◽  
N. G. Busarova ◽  
O. P. Moiseenko

1999 ◽  
Vol 50 (7) ◽  
pp. 1209-1211 ◽  
Author(s):  
Natalia V Zhukova ◽  
Vassilii I Svetashev

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