Study on Microcapsule Preparation of Yellow Pigment from Pumpkin
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Abstract:
The pumpkin yellow pigment was extracted and embedded. The best extraction condition were that the absorption wavelength 446nm by using Ultraviolet-visible spectrophotometer, extraction solvent 95% alcohol, the extraction temperature 70 ℃, the proportion of pumpkin and alcohol 1:1, and the extraction time 5 h. The best embedding conditions were the proportion of core material and exterior 1:20, the proportion of octenyl succinic starch ester and whey isolated protein 2:1, water bath temperature 75 ℃, the holding time 40min, and the pH value 4.75, under which the embeded rate was 96.24%.
