Recovery of chlorophylls from spent biomass of Arthrospira platensis obtained after extraction of phycobiliproteins.

Hrishikesh, A. Tavanandi and Raghavarao, K. S. M. S. (2019) Recovery of chlorophylls from spent biomass of Arthrospira platensis obtained after extraction of phycobiliproteins. Bioresource Technology, 271. pp. 391-401. ISSN 0960-8524

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Abstract

Extraction of chlorophylls has received scant attention or priority over phycobiliproteins from Arthrospira platensis. In fact extraction of chlorophylls from spent biomass (left after extraction of phycobiliproteins which goes as waste or underutilized) on drying, will improve the economics of the overall downstream processing. Ethanol (yield 5.75 mg/g, db), being a food grade solvent, was preferred over acetone and dimethyl sulfoxide in spite of their slightly better yields (5.85 mg/g, db). The best conditions were 100% concentration of ethanol, 1:8 S/L ratio, pH 6, 50 °C temperature and 1 h extraction time. An increase of 125% in yield besides reduction of 83.3% in extraction time (from 6 to 1 h) could be achieved at standardized conditions. Low-Humidity drying was observed to be a possible alternative to freeze drying for drying of spent biomass. Ultrasonication as pretreatment and ethanol as solvent were found effective for extraction of chlorophylls from dry spent biomass.

Item Type:	Article
Uncontrolled Keywords:	Spent biomass Downstream processing Value addition Chlorophylls Phycobiliproteins Spirulina platensis
Subjects:	500 Natural Sciences and Mathematics > 08 Botanical sciences > 01 Botany > 01 Algae 600 Technology > 08 Food technology > 05 Processing and Engineering
Divisions:	Food Engineering
Depositing User:	Food Sci. & Technol. Information Services
Date Deposited:	10 Jan 2019 09:20
Last Modified:	10 Jan 2019 09:20
URI:	http://ir.cftri.res.in/id/eprint/13904

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