期刊
LWT-FOOD SCIENCE AND TECHNOLOGY
卷 64, 期 2, 页码 727-734出版社
ELSEVIER
DOI: 10.1016/j.lwt.2015.06.033
关键词
Prebiotics; Probiotics; Synbiotics; Gastric resistance; Microencapsulation
资金
- Probiotical S.p.A
- University of Bologna [RFO13Bia11]
- Fundamental Oriented Research Program
The capability of ten commercial fibers of selectively stimulating the growth of four Bifidobacterium strains were studied with the purpose of developing a synbiotic product for infants. Two galactooligosaccharides (GOS), one fructo-oligosaccharide (sc-FOS), four inulins with different polymerization degree (DP), a gluco-oligosaccharide, an arabinogalactan and a hydrolyzed guar gum were used (10 gl(-1)). The prebiotic score was calculated comparing the capability of the fibers of stimulating the growth of bifidobacteria compared to infant pathogens. GOS, sc-FOS, low DP inulin (oligofructose) and the glucooligosaccharide could stimulate growth. However, the fibers showing the highest prebiotic score were oligofructose (Orafti (R) HIS), sc-FOS (Actilight (R) 950P) and the GOS Vivinal (R). Lyophilized strain survival in simulated gastro-intestinal conditions was also assayed to define suitable ways of administration. Survival in gastric juice at pH 2.5 was poor, whereas it was higher at pH 4, a value closer to newborn pH. Microencapsulation in a lipid matrix ensured strain survival also at pH 2.5. Survival to 1 gl(-1) bile salts was acceptable. The results allowed to conclude that Bifidobacterium breve B632 strain, in a lyophilized or microencapsulated form, has the potential for use in synbiotic products targeted to infants coupled to a mixture of GOS and FOS or oligofructose. (C) 2015 Elsevier Ltd. All rights reserved.
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