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Bacterial compositions of indigenous Lanna (Northern Thai) fermented foods and their potential functional properties

Many indigenous fermented foods of Northern Thailand and neighbouring regions have traditionally been known for their health benefits. In this study, we explored the communities of bacteria in selected fermented foods which are commonly consumed among ethnic groups around Northern Thailand, for whic...

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Autores principales: Pakwan, Chonthicha, Chitov, Thararat, Chantawannakul, Panuwan, Manasam, Manop, Bovonsombut, Sakunnee, Disayathanoowat, Terd
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Public Library of Science 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7673563/
https://www.ncbi.nlm.nih.gov/pubmed/33206720
http://dx.doi.org/10.1371/journal.pone.0242560
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author Pakwan, Chonthicha
Chitov, Thararat
Chantawannakul, Panuwan
Manasam, Manop
Bovonsombut, Sakunnee
Disayathanoowat, Terd
author_facet Pakwan, Chonthicha
Chitov, Thararat
Chantawannakul, Panuwan
Manasam, Manop
Bovonsombut, Sakunnee
Disayathanoowat, Terd
author_sort Pakwan, Chonthicha
collection PubMed
description Many indigenous fermented foods of Northern Thailand and neighbouring regions have traditionally been known for their health benefits. In this study, we explored the communities of bacteria in selected fermented foods which are commonly consumed among ethnic groups around Northern Thailand, for which information on their microbial compositions or their functional properties is still limited. The selected food groups included Thua Nao (alkaline fermented soybean product), Nham (fermented pork sausage/loaf), Nam phak (fermented Chinese cabbage) and Miang (fermented leaves from Miang Tea trees). Bacteria in these fermented foods were isolated and enumerated. Bacterial communities were determined using a culture-independent (pyrosequencing) approach. Lactic acid bacteria were recovered from all of these fermented food samples, with levels ranging from 3.1 to 7.5 log CFU/g throughout the fermentation processes. Analysis of the 16S rRNA gene from the fermented food samples using 454-pyrosequencing resulted in 113,844 sequences after quality evaluation. Lactic acid bacteria were found in high proportions in Nham, Nam phak and Miang. Bacillus was predominant in Thua nao, in which significant proportions of Lactic acid bacteria of the family Leuconostocaceae were also found. Groups of lactic acid bacteria found varied among different food samples, but three genera were predominant: Lactococcus, Lactobacillus and Leuconostoc, of which many members are recognised as probiotics. The results showed that these traditional Thai fermented food products are rich sources of beneficial bacteria and can potentially be functional/probiotic foods.
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spelling pubmed-76735632020-11-19 Bacterial compositions of indigenous Lanna (Northern Thai) fermented foods and their potential functional properties Pakwan, Chonthicha Chitov, Thararat Chantawannakul, Panuwan Manasam, Manop Bovonsombut, Sakunnee Disayathanoowat, Terd PLoS One Research Article Many indigenous fermented foods of Northern Thailand and neighbouring regions have traditionally been known for their health benefits. In this study, we explored the communities of bacteria in selected fermented foods which are commonly consumed among ethnic groups around Northern Thailand, for which information on their microbial compositions or their functional properties is still limited. The selected food groups included Thua Nao (alkaline fermented soybean product), Nham (fermented pork sausage/loaf), Nam phak (fermented Chinese cabbage) and Miang (fermented leaves from Miang Tea trees). Bacteria in these fermented foods were isolated and enumerated. Bacterial communities were determined using a culture-independent (pyrosequencing) approach. Lactic acid bacteria were recovered from all of these fermented food samples, with levels ranging from 3.1 to 7.5 log CFU/g throughout the fermentation processes. Analysis of the 16S rRNA gene from the fermented food samples using 454-pyrosequencing resulted in 113,844 sequences after quality evaluation. Lactic acid bacteria were found in high proportions in Nham, Nam phak and Miang. Bacillus was predominant in Thua nao, in which significant proportions of Lactic acid bacteria of the family Leuconostocaceae were also found. Groups of lactic acid bacteria found varied among different food samples, but three genera were predominant: Lactococcus, Lactobacillus and Leuconostoc, of which many members are recognised as probiotics. The results showed that these traditional Thai fermented food products are rich sources of beneficial bacteria and can potentially be functional/probiotic foods. Public Library of Science 2020-11-18 /pmc/articles/PMC7673563/ /pubmed/33206720 http://dx.doi.org/10.1371/journal.pone.0242560 Text en © 2020 Pakwan et al http://creativecommons.org/licenses/by/4.0/ This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
spellingShingle Research Article
Pakwan, Chonthicha
Chitov, Thararat
Chantawannakul, Panuwan
Manasam, Manop
Bovonsombut, Sakunnee
Disayathanoowat, Terd
Bacterial compositions of indigenous Lanna (Northern Thai) fermented foods and their potential functional properties
title Bacterial compositions of indigenous Lanna (Northern Thai) fermented foods and their potential functional properties
title_full Bacterial compositions of indigenous Lanna (Northern Thai) fermented foods and their potential functional properties
title_fullStr Bacterial compositions of indigenous Lanna (Northern Thai) fermented foods and their potential functional properties
title_full_unstemmed Bacterial compositions of indigenous Lanna (Northern Thai) fermented foods and their potential functional properties
title_short Bacterial compositions of indigenous Lanna (Northern Thai) fermented foods and their potential functional properties
title_sort bacterial compositions of indigenous lanna (northern thai) fermented foods and their potential functional properties
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7673563/
https://www.ncbi.nlm.nih.gov/pubmed/33206720
http://dx.doi.org/10.1371/journal.pone.0242560
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