1. Polyglycerol polyricinoleate and lecithin stabilized water in oil nanoemulsions for sugaring Beijing roast duck: Preparation, stability mechanisms and color improvement.
- Author
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Yao, Xinshuo, Teng, Wendi, Wang, Jinpeng, Wang, Ying, Zhang, Yuemei, and Cao, Jinxuan
- Subjects
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DUCKS as food , *LECITHIN , *MALTOSE , *SUGAR alcohols , *SUGAR , *EMULSIONS - Abstract
Traditional Beijing roast duck often suffers from uneven color and high sugar content after roasting. Water-in-oil (W/O) nanoemulsion is a promising alternative to replace high concentration of sugar solution used in sugaring process according to similarity-intermiscibility theory. Herein, 3% of xylose was embedded in the aqueous phase of W/O emulsion to replace 15% maltose solution. W/O emulsions with different ratios of lecithin (LEC) and polyglycerol polyricinoleate (PGPR) were constructed by high-speed homogenization and high-pressure homogenization. Distribution and penetration extent of solutions and emulsions through the duck skin, as well as the color uniformity of Beijing roast duck were analyzed. Emulsions with LEC:PGPR ratios of 1:3 and 2:2 had better stability. Stable interfacial film and spatial structure were important factors influencing emulsion stabilization. The stable W/O emulsions could more uniformly distribute onto the surface of duck skin and longitudinally penetrate through the skin than solutions. • Stability mechanisms of W/O nanoemulsions emulsified by PGPR and LEC were explored. • Beijing roast duck with emulsion instead of solution had a better odour and taste. • Color uniformity of Beijing roast duck was significantly improved. • Distribution and penetration of emulsions on the surface of duck skin was observed. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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