The influence of soy protein hydrolysate (SPH) addition to infant formula powder on Streptococcus thermophilus proliferation and metabolism.
Food Res Int
; 141: 110103, 2021 03.
Article
in En
| MEDLINE
| ID: mdl-33641970
ABSTRACT
Nowadays, more and more infants are getting allergic to cow's milk protein, so it is urgent to search for infant formula powder with milk protein alternatives. In the present work, soy protein hydrolysate (SPH) was added to protein-free infant formula powder and the effects of SPH addition on proliferation and metabolism of Streptococcus thermophilus were studied. Compared with commercially available infant formula powder (CK) and protein-free milk powder (BK), the infant formula powder with 20% SPH significantly enhanced the proliferation of S. thermophilus in MRS medium, resulting in a higher cell density and greater viable counts. Moreover, the influence of SPH on the metabolism of S. thermophilus was investigated by analyzing the content of seven organic acids and H2O2 in the medium. The higher content of organic acids and H2O2 is consistent with the stronger antibacterial activity to Escherichia coli. As a consequence, the addition of SPH to infant formula powder can effectively promote the growth of probiotics and SPH may be a promising protein alternative in the infant formula powder.
Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Milk Hypersensitivity
/
Infant Formula
Limits:
Animals
/
Female
/
Humans
/
Infant
Language:
En
Journal:
Food Res Int
Year:
2021
Document type:
Article