Lipase-catalyzed glycerolysis of anchovy oil in a solvent-free system: Simultaneous optimization of monoacylglycerol synthesis and end-product oxidative stability.
Food Chem
; 271: 372-379, 2019 Jan 15.
Article
em En
| MEDLINE
| ID: mdl-30236689
ABSTRACT
The production of mono- and diacylglycerols rich in polyunsaturated fatty acids is achieved in this study, by solvent-free glycerolysis of anchovy oil with lipase PS-DI from Burkholderia cepacia. Attention is focused on the oxidative stability of the reaction products, determined in terms of induction time (It). The effects of glycerol/triacylglycerol molar ratio, enzyme concentration, and reaction temperature on mono- and diacylglycerol production and It are all assessed. The operating conditions that optimized monoacylglycerol yields and oxidative stability were a glycerol/triacylglycerol ratio of 3/1, 9.0% (w/w) Lipase PS-DI, a stirring rate of 200â¯rpm, and a reaction time of 4â¯h, at 45.8⯰C, producing a content of 24.8% and 51.9% of mono- and diacylglycerols, respectively, over an It of 1.41â¯h. The glycerolysis conditions determined by simultaneous optimization strategy increased the oxidative stability of the glycerolysis products by 68%, which rose from 0.84â¯h (individual optimization) to 1.41â¯h.
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01-internacional
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MEDLINE
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Animals
Idioma:
En
Ano de publicação:
2019
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Article