Phytoglycogen octenyl succinate, an amphiphilic carbohydrate nanoparticle, and epsilon-polylysine to improve lipid oxidative stability of emulsions

Journal of Agricultural and Food Chemistry
Siqi L SchefflerYuan Yao

Abstract

Phytoglycogen octenyl succinate (PG-OS) and epsilon-polylysine (EPL) were used to form oil-in-water emulsions with enhanced lipid oxidative stability. PG-OS is an amphiphilic carbohydrate nanoparticle prepared using octenyl succinate (OS) substitution of phytoglycogen (PG). PG-OS had a dispersed molecular density nearly 20 times that of waxy corn starch octenyl succinate (WCS-OS). Fish oil-in-water emulsions were prepared using PG-OS, WCS-OS, and Tween 20, stored at 55 degrees C for 6 days, and monitored for the accumulation of hydroperoxide and thiobarbituric acid reactive substances (TBARS). The result indicated that PG-OS may lead to high lipid oxidative stability, and that the addition of EPL may further improve the oxidative stability of emulsions. To address the interaction between PG-OS and EPL, zeta-potential was determined for various systems. The results indicated a possible formation of an interfacial complex layer comprising both PG-OS and EPL. This complex layer may provide both physical and electrostatic barriers against pro-oxidative compounds.

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Citations

Jan 22, 2013·Journal of Agricultural and Food Chemistry·Rong LiangQingrong Huang
Oct 11, 2014·International Journal of Molecular Sciences·Ana Maria Carmona-Ribeiro, Letícia Dias de Melo Carrasco
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May 19, 2019·Ultrasonics Sonochemistry·Adriana García-GurrolaFernando Martínez-Bustos

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