Research Repository

Influence of Galactooligosaccharides and Modified Waxy Maize Starch on Some Attributes of Yogurt

Prasad, Laxmi N and Sherkat, Frank and Shah, Nagendra P (2012) Influence of Galactooligosaccharides and Modified Waxy Maize Starch on Some Attributes of Yogurt. Journal of Food Science, 78 (1). M77-M83. ISSN 00221147 (print) 1750-3841 (online)

Full text for this resource is not available from the Research Repository.

Abstract

This study examined the influence of galactooligosaccharides (GOS) and modified waxy maize starch (MWMS) addition on the growth of starter cultures, and syneresis and firmness of low-fat yogurt during storage for 28 d at 4 °C. The control yogurt (CY) was prepared without any prebiotics. Incorporation of 2.0% (w/v) GOS improved the growth of L. delbrueckii ssp. bulgaricus ATCC 11842 resulting in a shorter fermentation time. There was a significant (P < 0.05) increase in proteolysis in yogurt made with GOS (GOSY) as measured by absorbance value (0.728). Addition of GOS resulted in higher (P < 0.05) concentration of lactic and acetic acids in comparison with that of MWMSY and the CY up to day 14, thereafter, the product showed a decrease in lactic acid content in all 3 batches until the end of storage. The level of syneresis was the lowest (2.14%) in MWMSY as compared with that of GOSY (2.35%) and CY (2.53%). There was no statistically significant (P > 0.05) difference in the firmness among the 3 types of yogurt.

Item Type: Article
Uncontrolled Keywords: ResPubID25488, ResPubID26684, firmness, galacto-oligosaccharides, lactic and acetic acids, modified waxy maize starch, proteolytic activity, spontaneous whey separation
Subjects: FOR Classification > 0908 Food Sciences
Faculty/School/Research Centre/Department > College of Health and Biomedicine
Depositing User: Yimin Zeng
Date Deposited: 10 Mar 2014 23:33
Last Modified: 21 Aug 2014 04:25
URI: http://vuir.vu.edu.au/id/eprint/23448
DOI: 10.1111/j.1750-3841.2012.03004.x
ePrint Statistics: View download statistics for this item

Repository staff only

View Item View Item

Search Google Scholar