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Differential partitioning for purification of anthocyanins from Brassica oleracea L.

Chandrasekhar, J. and Raghavarao, K. S. M. S. (2015) Differential partitioning for purification of anthocyanins from Brassica oleracea L. Separation and Purification Technology, 151. pp. 57-65.

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Abstract

Aqueous two phase extraction was employed as an alternate method for the downstream processing of anthocyanins. Polyethylene glycol (PEG) 4000/magnesium sulphate (14.8%/10.3% w/w) was found to be the most suitable system. Tie line length of 32.61% and volume ratio of 0.73 have resulted in maximum partitioning of anthocyanins to the PEG-rich phase (yield – 98.19%) and sugars to the salt-rich phase (yield – 73.16%). Multistage aqueous two phase extraction resulted in an increase in removal of sugars (to about 96.5%) with 91.9% yield of anthocyanins. The phase forming polymer (PEG 4000) was successfully separated from anthocyanins employing organic–aqueous extraction resulting in 2.3 fold increase in the concentration of anthocyanins. High performance liquid chromatography (HPLC)–Mass spectroscopy (MS)/MS was carried out to confirm the structural stability of anthocyanins.

Item Type: Article
Uncontrolled Keywords: Anthocyanins Aqueous two phase extraction Brassica oleracea L. Differential partitioning Partition coefficient
Subjects: 600 Technology > 08 Food technology > 23 Vegetables
600 Technology > 08 Food technology > 07 Food Engineering
Divisions: Food Engineering
Depositing User: Food Sci. & Technol. Information Services
Date Deposited: 28 Nov 2016 07:35
Last Modified: 28 Nov 2016 07:35
URI: http://ir.cftri.com/id/eprint/12573

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