Journal
JOURNAL OF MICROENCAPSULATION
Volume 36, Issue 2, Pages 192-203Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/02652048.2019.1618403
Keywords
Zein; microencapsulation; Bifidobacterium bifidum; coating; survival
Funding
- University of Agriculture, Faisalabad
- Ayub Agriculture Research Institute, Pakistan
- Jiangnan University, Wuxi, China
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The Bifidobacterium bifidum susceptibility in gastrointestinal conditions and storage stability limit its use as potential probiotics. The current study was design to encapsulate B. bifidum using sodium alginate (SA, 1.4% w/v) and different concentration of zein as coating material, that is, Z(1) (1% w/v), Z(2) (3% w/v), Z(3) (5% w/v), Z(4) (7% w/v), Z(5) (9% w/v). The resultant microbeads were further investigated for encapsulation efficiency, survival in gastrointestinal conditions, release profile in intestinal fluid, storage stability and morphological characteristics. The highest encapsulation efficiency (94.56%) and viable count (>10(7) log CFU/g) was observed in Z(4) (7% w/v). Viable cell count of B. bifidum was >10(6) log CFU/g in all the zein-coated microbeads as compare to free cells (10(3) log CFU/g) and SA (10(5) log CFU/g) at 4 degrees C after 32 days of storage. Therefore, B. bifidum encapsulated in zein-coated alginate microbeads present improved survival during gastric transit and storage.
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