期刊
FOOD BIOSCIENCE
卷 46, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.fbio.2022.101576
关键词
Microencapsulation; Silk sericin; Probiotic; Storage stability
The study demonstrates that silk sericin as a biomaterial can improve the viability of probiotic Lactobacillus when co-encapsulated with other substances. Under certain conditions, silk sericin-coated microcapsules exhibit higher stability and protective effects.
The use of silk sericin protein as a biomaterial to co-encapsulate probiotic Lactobacillus casei TISTR 1463 with alginate and various prebiotics was determined. In addition, 0.2% silk sericin was also evaluated as a coating material to improve the viability of probiotic cells. Silk sericin coating has the potential to enhance probiotic survival in freeze-dried microcapsules. Under refrigerated storage condition of 4 degrees C for 120 days, alginate-silk sericin-maltitol with silk sericin coating (ASM-C) provided the best performance with the lowest inactivation rate (k) and the highest delta parameter (the first decimal reduction time) applied by the log-linear and Weibull models, respectively. However, the stability was relatively low at the temperature of 30 degrees C. Co-encapsulation of alginate-silk sericin-prebiotic and coated with silk sericin exerted a protective impact on the strain survival when exposed to high temperatures and transited through the digestive system.
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