NOPR Collection:

Study of Color Morphs of Brachyuran crab Etisus laevimanus Randall, 1840

Sun, 01 Sep 2013 00:00:00 GMT

Title: Study of Color Morphs of Brachyuran crab Etisus laevimanus Randall, 1840 Authors: Trivedi, J. N.; Vachhrajani, K. D. Abstract: Present study consists the color polymorphism in brachyuran crab Etisus laevimanus Randall, 1840, which is common species found on the rocky shores of indo-pacific region. Total 83 specimens were collected from four different rocky shore sites of Saurashtra coast. Seven different morphs including orange morph, orange morph with brown dots on carapace, green morph, white morph with brown markings on carapace, yellow morph with brown markings on carapace, orange morph with white stripe on carapace and green morph with black spot on carapace were identified. Yellow morph with brown markings on carapace was the most common morph while green morph with black spot on carapace was rare morph found in the study area. Morphs also show peculiar micro habitat preference. Page(s): 659-664

Comparison of DPPH and ABTS assays for determining antioxidant potential of water and methanol extracts of Spirulina platensis

Sun, 01 Sep 2013 00:00:00 GMT

Title: Comparison of DPPH and ABTS assays for determining antioxidant potential of water and methanol extracts of Spirulina platensis Authors: Shalaby, Emad A.; Shanab, Sanaa M. M. Abstract: Present research was to evaluate and compare the antiradical and antioxidant activities of extracts from Spirulina platensis. In the present study, three extracts (Water, absolute methanol and 50% methanol in water) were analyzed for the total phenolic compounds, phycobiliprotein content: Antiradical and antioxidant activities were evaluated using 2,2-diphenyl-1-picrylhydrazyl (DPPH^•) and 2,2-azinobis (3-ethylbenzothiazoline-6-sulfonic acid) (ABTS) radical scavenging methods at 100 and 200 µg/mL. Results revealed that, absolute methanol extract recorded the highest number of antiradical units 1 mg extract followed in descending order by that of water while the lowest number was that of aqueous methanol (against DPPH and ABTS radical methods) and these correlated with chemical constituents of extract from phenolic and phycobiliprotein compounds. It is elucidated that selection of the cyanobacterium (Spirulina platensis) very important for consumer’s health, as it is considered as potential sources of dietary antioxidants. Page(s): 556-564

Anti cancer activity prediction of secondary metabolites from marine sponge discodermia calyx: An in silico approach

Sun, 01 Sep 2013 00:00:00 GMT

Title: Anti cancer activity prediction of secondary metabolites from marine sponge discodermia calyx: An in silico approach Authors: Raj, Sumit; Inbakandan, D Abstract: A molecular docking analysis was carried out followed by Molecular Dynamics (MD) simulation studies on the secondary metabolites from a marine sponge Discodermia calyx in order to identify their bioactive targets acting towards cancer. Over expression of Epidermal Growth Factor Receptor (EGFR) results in triple negative breast cancer. Hence, a docking investigation was carried out in order to predict the anticancer properties of secondary metabolites from a marine sponge D. calyx targeting the EGFR. The compounds were further subjected to MD simulation analysis. Docking analysis reveals that the compounds debromohamacanthin B, tetrahydrofurospongin and deoxytopsentin showed good interaction with the EGFR receptor forming hydrogen bonds with the tyrosine and arginine residue preventing the binding of EGF to the EGFR receptor by inhibiting dimerization with a score of 130.13, 139.369 and 114.416 respectively. Page(s): 653-658

Role of algal mixture in Food intake of Macrobrachium rosenbergii during larval development

Sun, 01 Sep 2013 00:00:00 GMT

Title: Role of algal mixture in Food intake of Macrobrachium rosenbergii during larval development Authors: Roychoudhury, Piya; Mukherjee, Madhumita Abstract: Possible roles of algae (i.e. “green water”) in facilitating Macrobrachium rosenbergii larviculture have been investigated in the present study. Three types of algae were mixted with shrimp larval feed. Algal members were belonging to the family like Cyanophyceae, Chlorophyceae and Charophyceae respectively. Algal mixture was applied with control feed, showed better result in shrimp larval development. It took only 15 days to attain post larval stage, where as in conventional feeding practice it was 27 days. Algal mixture as total feed showed more or less similar result (26 days) in comparison to conventional feed. As in this formulation total animal protein was replaced, it will be effective in controlling larval diseases. Page(s): 647-652