Abstract

Perilla seed oil(PSO) powder was prepared by physical adsorption with cross-linked esterified porous starch(CEPS) as the wall material.Several process conditions were optimized by one-factor-at-a-time and orthogonal array design to achieve the highest embedding efficiency(EE).The optimum conditions for preparing PSO powder were established as follows: embedding at 55 ℃ for 50 min with a PSO/ CEPS ratio of 4:1.PSO powder under the optimized conditions gave rise to the highest EE of more than 30%.The peroxide values(POV) of PSO and the PSO powder under the optimized conditions were determined under accelerated oxidation conditions.From the results obtained,we found that the lipid oxidation time of the PSO powder was substantially prolonged in comparison with native PSO,indicating enhanced oxidation resistance.

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