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Effect of Probiotic Lactic Acid Bacteria (LAB) on the Quality and Safety of Greek Yogurt

Greek yogurt is a strained yogurt with a high protein content that brings nutritional benefits. To enhance the functional benefits of Greek yogurt, Greek yogurt was prepared with various combinations of probiotic lactic acid bacteria (LAB) (Streptococcus thermophilus, Lactobacillus bulgaricus, Lacto...

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Autores principales: Yang, So-Young, Yoon, Ki-Sun
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9740215/
https://www.ncbi.nlm.nih.gov/pubmed/36496607
http://dx.doi.org/10.3390/foods11233799
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author Yang, So-Young
Yoon, Ki-Sun
author_facet Yang, So-Young
Yoon, Ki-Sun
author_sort Yang, So-Young
collection PubMed
description Greek yogurt is a strained yogurt with a high protein content that brings nutritional benefits. To enhance the functional benefits of Greek yogurt, Greek yogurt was prepared with various combinations of probiotic lactic acid bacteria (LAB) (Streptococcus thermophilus, Lactobacillus bulgaricus, Lactobacillus gasseri BNR17, and Lactobacillus plantarum HY7714). Effects of probiotic LAB on quality, sensory, and microbiological characteristics of Greek yogurt were then compared. Among samples, Greek yogurt fermented by S. thermophilus and L. bulgaricus showed the highest changes of pH and titratable acidity during 21 d of storage at 4 °C. Greek yogurt fermented with L. plantarum HY7714 had a higher viscosity than other samples. Greek yogurt fermented with S. thermophilus, L. bulgaricus, L. gasseri BNR17, and L. plantarum HY7714 showed superior physicochemical properties and received the highest preference score from sensory evaluation among samples. Overall, the population of enterohaemorrhagic Escherichia coli (EHEC) was more effectively reduced in Greek yogurt fermented with probiotic LAB than in commercial Greek yogurt during storage at 4, 10, and 25 °C. Thus, the addition of L. gasseri BNR17 and L. plantarum HY7714 as starter cultures could enhance the microbial safety of Greek yogurt and sensory acceptance by consumers.
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spelling pubmed-97402152022-12-11 Effect of Probiotic Lactic Acid Bacteria (LAB) on the Quality and Safety of Greek Yogurt Yang, So-Young Yoon, Ki-Sun Foods Article Greek yogurt is a strained yogurt with a high protein content that brings nutritional benefits. To enhance the functional benefits of Greek yogurt, Greek yogurt was prepared with various combinations of probiotic lactic acid bacteria (LAB) (Streptococcus thermophilus, Lactobacillus bulgaricus, Lactobacillus gasseri BNR17, and Lactobacillus plantarum HY7714). Effects of probiotic LAB on quality, sensory, and microbiological characteristics of Greek yogurt were then compared. Among samples, Greek yogurt fermented by S. thermophilus and L. bulgaricus showed the highest changes of pH and titratable acidity during 21 d of storage at 4 °C. Greek yogurt fermented with L. plantarum HY7714 had a higher viscosity than other samples. Greek yogurt fermented with S. thermophilus, L. bulgaricus, L. gasseri BNR17, and L. plantarum HY7714 showed superior physicochemical properties and received the highest preference score from sensory evaluation among samples. Overall, the population of enterohaemorrhagic Escherichia coli (EHEC) was more effectively reduced in Greek yogurt fermented with probiotic LAB than in commercial Greek yogurt during storage at 4, 10, and 25 °C. Thus, the addition of L. gasseri BNR17 and L. plantarum HY7714 as starter cultures could enhance the microbial safety of Greek yogurt and sensory acceptance by consumers. MDPI 2022-11-25 /pmc/articles/PMC9740215/ /pubmed/36496607 http://dx.doi.org/10.3390/foods11233799 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Yang, So-Young
Yoon, Ki-Sun
Effect of Probiotic Lactic Acid Bacteria (LAB) on the Quality and Safety of Greek Yogurt
title Effect of Probiotic Lactic Acid Bacteria (LAB) on the Quality and Safety of Greek Yogurt
title_full Effect of Probiotic Lactic Acid Bacteria (LAB) on the Quality and Safety of Greek Yogurt
title_fullStr Effect of Probiotic Lactic Acid Bacteria (LAB) on the Quality and Safety of Greek Yogurt
title_full_unstemmed Effect of Probiotic Lactic Acid Bacteria (LAB) on the Quality and Safety of Greek Yogurt
title_short Effect of Probiotic Lactic Acid Bacteria (LAB) on the Quality and Safety of Greek Yogurt
title_sort effect of probiotic lactic acid bacteria (lab) on the quality and safety of greek yogurt
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9740215/
https://www.ncbi.nlm.nih.gov/pubmed/36496607
http://dx.doi.org/10.3390/foods11233799
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