The effects of microcapsules with different protein matrixes on the viability of probiotics during spray drying, gastrointestinal digestion, thermal treatment, and storage
Rui Zhou, Yifu Xu, Dejun Dong, Jielun Hu, Lin Zhang, Huan Liu
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引用次数: 1
Abstract
The objective of this research was to encapsulate probiotic bacteria based on the protein matrix and investigate the influences on the survival of probiotic bacteria during spray drying, in vitro gastrointestinal digestion, heating, and storage. A probiotic isolate Bacillus coagulans BC01 was spray dried in whey protein isolate (WPI), soy protein isolate (SPI), camel whey protein isolate, or sodium caseinate. Probiotic microcapsules fabricated using WPI obtained the highest survival during spray drying, NaCl and paraxin challenges and storage, as less cell wall damage occurred during spray drying which could be observed by flow cytometer. However, the highest survivals during in vitro gastrointestinal digestion and thermal treatment were found in microcapsules with SPI matrix, which could be attributed to its relatively low solubility in water that prevented probiotics from being released prematurely, thus protecting probiotics from the damage of low pH environment and diminishing the direct contact of cells with external heat shock. In conclusion, the current study demonstrated that WPI-based probiotic microcapsules with less cell wall damage during processing and SPI-based probiotic microcapsules with relatively low solubility may provide better protection to adverse external environments.
期刊介绍:
eFood is the official journal of the International Association of Dietetic Nutrition and Safety (IADNS) which eFood aims to cover all aspects of food science and technology. The journal’s mission is to advance and disseminate knowledge of food science, and to promote and foster research into the chemistry, nutrition and safety of food worldwide, by supporting open dissemination and lively discourse about a wide range of the most important topics in global food and health.
The Editors welcome original research articles, comprehensive reviews, mini review, highlights, news, short reports, perspectives and correspondences on both experimental work and policy management in relation to food chemistry, nutrition, food health and safety, etc. Research areas covered in the journal include, but are not limited to, the following:
● Food chemistry
● Nutrition
● Food safety
● Food and health
● Food technology and sustainability
● Food processing
● Sensory and consumer science
● Food microbiology
● Food toxicology
● Food packaging
● Food security
● Healthy foods
● Super foods
● Food science (general)