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Phytochemical screening of twelve species of phytoplankton isolated from Arabian Sea coast

Journal of Coastal Life Medicine 2015年第11期 857-863页

作者： Sushanth Vishwanath Rai madaiah rajashekhar Department of Biosciences Mangalore UniversityMangalagangothri-574199KarnatakaIndia

Objective:To analyze the phytochemicals in twelve species of marine ***:Total phenolic content of methanol extract was estimated by the Folin-Ciocalteu *** flavonoid content of the methanol extarct was determined by aluminium chloride ***,β-carotene and astaxanthin were estimated by acetone extraction *** C was determined by dinitrophenyl-hydrazine *** such as allophycocyanin,phycocyanin and phycoerythrin in the aqueous extracts were ***:Total phenolics varied from 5.41 mg gallic acid equivalents/g dry weight(DW)in Phormidium corium(***)to 17.37 mg gallic acid equivalents/g DW in Oscillatoria fremyii(***).Total flavonoids ranged between 0.74 mg quercetin equivalent/g DW in *** and 9.87 mg quercetin equivalent/g DW in Nannochloropsis ***-a pigment was high in Chaetoceros calcitrans(***)(15.51 mg/g DW)and low in ***(1.08 mg/g DW).Chlorophyll-c ranged between 0.07 mg/g DW in Nannochloropsis oceanica and 4.62 mg/g DW in *** contents ofβ-carotene and astaxanthin were found in *** and low in *** which ranged from 0.33 to 10.03 mg/g DW and 0.18 to 3.85 mg/g DW,*** C content varied from 0.50 mg/g DW in *** to 1.51 mg/g DW in Phormidium *** showed highest total phycobiliproteins of 317.05 mg/g *** contents of allophycocyanin and phycocyanin were found in ***,whereas high contents of phycoerythrin were found in Oscillatoria *** the three phycobiliproteins were low in Chroococcus ***:Marine phytoplankton are one of the natural sources providing novel biologically active compounds with potential for pharmaceutical applications.

关键词： Marine phytoplankton Phytochemical constituents Phenolics Pigments Phycobiliproteins

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