期刊
ARTIFICIAL CELLS NANOMEDICINE AND BIOTECHNOLOGY
卷 46, 期 -, 页码 S588-S596出版社
TAYLOR & FRANCIS LTD
DOI: 10.1080/21691401.2018.1431652
关键词
Xanthan-chitosan; Bifidobacterium bifidum; microencapsulation; Box-Behnken design; pure milk
资金
- Shaanxi Provincial Education Department [17JF005]
- Science and Technology Project of Xianyang city [2017K02-69]
- Doctoral Scientific Research Fund from Shaanxi University of Science and Technology [2017BJ-04]
- Science and Technology Overall Planning for innovation Engineering project of Shaanxi Province [2016KTZDNY02-08]
Xanthan-chitosan (XC) and xanthan-chitosan-xanthan (XCX) were employed for microencapsulation of Bifidobacterium bifidum BB01 using extrusion technique. To optimize the process of B. bifidum BB01 microcapsules based on XC hydrogels, response surface methodology was employed to obtain the best possible combination of chitosan concentration, xanthan-B. bifidum BB01 mixture (XBM)/chitosan, stirring time for the maximum viable count and encapsulation yield. The optimum conditions were: chitosan concentration of 0.84gmL(-1), XBM/chitosan of 1:9.0, stirring time of 60min with high viable count and encapsulation yield of 1.52 +/- 0.15x10(10)CFUg(-1), 90 +/- 0.65%, respectively. In addition, the effective encapsulation system (XC and XCX) resulted in improvement in survival of B. bifidum BB01 compared to non-encapsulated cells during 3weeks storage at 4 and 25 degrees C in pure milk.
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