Whey Valorisation of Probiotic Fermented Milk

DOI

10.2991/absr.k.220207.040How to use a DOI?

Keywords

Fermented milk; Single probiotic; Multi probiotic; Whey

Abstract

Cheese making process produces whey as its by-product in which contains valuable nutrients. Whey has the potential to be utilized to reduce pollution to the environment. This study aims to compare acidity (titration), pH (pH meter), viscosity (viscometer), and volatile compounds (GC-MS) of fermented milk using single probiotic bacteria, Bifidobacterium sp., and multi probiotic bacteria ABC (Lactobacillus acidophilus (A), Bifidobacterium sp., (B), and Lactobacillus casei (C)). Fermented milk was made from fresh cow’s milk pasteurized at 76ºC mixed with whey, inoculated with single probiotic culture as well as multi probiotic followed by incubation for 24 hours at 39ºC. Data of acidity and pH were analysed with split-plot design while viscosity and volatile compounds were analysed with One-Way ANOVA. Results showed that the use of single probiotic compared to multi probiotics gave highly significant differences (P<0.01) on quality of fermented milk which had lower pH value (4.520 vs 4.834), higher acidity (0.551 vs 0.386%), and thicker texture which gave significant differences (P<0.05) on viscosity (925 vs 83.75 cP). Volatile compounds detected in fermented milk both single and multi-probiotic were acetone (19 vs 4.8 ppm), acetaldehyde (0.18 vs 0.34 ppm), and acetic acid (0.72 vs 0.63 ppm). Based on the results it is concluded that whey valorisation is more effective in fermented milk using single probiotic. Furthermore, whey can be used to develop probiotic fermented milk rather than to be discarded.

Copyright

© 2022 The Authors. Published by Atlantis Press International B.V.

Open Access

This is an open access article under the CC BY-NC license.

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TY  - CONF
AU  - Nur Laili Ma’rufah
AU  - Trijoko Wisnu Murti
AU  - Z Nurhanifah
AU  - M Devina
PY  - 2022
DA  - 2022/02/24
TI  - Whey Valorisation of Probiotic Fermented Milk
BT  - Proceedings of the 9th International Seminar on Tropical Animal Production (ISTAP 2021)
PB  - Atlantis Press
SP  - 190
EP  - 193
SN  - 2468-5747
UR  - https://doi.org/10.2991/absr.k.220207.040
DO  - 10.2991/absr.k.220207.040
ID  - Ma’rufah2022
ER  -