DYNAMICS OF MICROBIAL COMMUNITY DURING TEMPEH FERMENTATION

Tempeh is sliceable soybean-cake fermented by Rhizopus oligosporus. Various bacteria were detected in tempeh employing cultivation technique with limited information about their origin or sources. The present study aimed to examine the source/s of bacterial community in tempeh by combining metageno...

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Main Author: Antonius Suwanto
Format: Article
Language:English
Published: SEAMEO, BIOTROP 2021-04-01
Series:Biotropia: The Southeast Asian Journal of Tropical Biology
Subjects:
Online Access:https://journal.biotrop.org/index.php/biotropia/article/view/820
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author Antonius Suwanto
author_facet Antonius Suwanto
author_sort Antonius Suwanto
collection DOAJ
description Tempeh is sliceable soybean-cake fermented by Rhizopus oligosporus. Various bacteria were detected in tempeh employing cultivation technique with limited information about their origin or sources. The present study aimed to examine the source/s of bacterial community in tempeh by combining metagenomics analysis and cultivation technique. Samples were obtained from a number of steps in tempeh production employing two-times boiling of soybean (WJB tempeh production). All samples were plated on Enterobacteriaceae and Lactic Acid Bacteria medium. Total DNA were extracted directly from tempeh for metagenomics analysis, employing High-Throughput Sequencing (HTS) and cloned 16S rRNA genes. Firmicutes and Proteobacteria were the predominant and second dominant bacteria existed in fresh tempeh (FT) obtained by metagenomics analysis. In contrast, cultivation technique showed that Proteobacteria was the predominant phylum, suggested that most of the Firmicutes were not culturable. FT was dominated by Lactobacillus and Acetobacter. Both FT and soaking water (SW) were dominated by same species of Lactobacillus, i.e. L. delbreuckii and L. mucosae, indicated that SW was probably the source of bacterial community established in the final product of fermentation. Predominant bacteria in starter culture (SC), Acinetobacter, was not detected in FT, indicating that bacteria in SC might not play significant role in bacterial community development in FT.
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spelling doaj.art-beeb896daa2f453db872d8895a5285112023-07-13T04:25:00ZengSEAMEO, BIOTROPBiotropia: The Southeast Asian Journal of Tropical Biology0215-63341907-770X2021-04-0128110.11598/btb.0.0.0.820DYNAMICS OF MICROBIAL COMMUNITY DURING TEMPEH FERMENTATION Antonius Suwanto0Bogor Agricultural University Tempeh is sliceable soybean-cake fermented by Rhizopus oligosporus. Various bacteria were detected in tempeh employing cultivation technique with limited information about their origin or sources. The present study aimed to examine the source/s of bacterial community in tempeh by combining metagenomics analysis and cultivation technique. Samples were obtained from a number of steps in tempeh production employing two-times boiling of soybean (WJB tempeh production). All samples were plated on Enterobacteriaceae and Lactic Acid Bacteria medium. Total DNA were extracted directly from tempeh for metagenomics analysis, employing High-Throughput Sequencing (HTS) and cloned 16S rRNA genes. Firmicutes and Proteobacteria were the predominant and second dominant bacteria existed in fresh tempeh (FT) obtained by metagenomics analysis. In contrast, cultivation technique showed that Proteobacteria was the predominant phylum, suggested that most of the Firmicutes were not culturable. FT was dominated by Lactobacillus and Acetobacter. Both FT and soaking water (SW) were dominated by same species of Lactobacillus, i.e. L. delbreuckii and L. mucosae, indicated that SW was probably the source of bacterial community established in the final product of fermentation. Predominant bacteria in starter culture (SC), Acinetobacter, was not detected in FT, indicating that bacteria in SC might not play significant role in bacterial community development in FT. https://journal.biotrop.org/index.php/biotropia/article/view/820Firmicuteshigh-throughput sequencingProteobacteriastarter culturetempeh
spellingShingle Antonius Suwanto
DYNAMICS OF MICROBIAL COMMUNITY DURING TEMPEH FERMENTATION
Biotropia: The Southeast Asian Journal of Tropical Biology
Firmicutes
high-throughput sequencing
Proteobacteria
starter culture
tempeh
title DYNAMICS OF MICROBIAL COMMUNITY DURING TEMPEH FERMENTATION
title_full DYNAMICS OF MICROBIAL COMMUNITY DURING TEMPEH FERMENTATION
title_fullStr DYNAMICS OF MICROBIAL COMMUNITY DURING TEMPEH FERMENTATION
title_full_unstemmed DYNAMICS OF MICROBIAL COMMUNITY DURING TEMPEH FERMENTATION
title_short DYNAMICS OF MICROBIAL COMMUNITY DURING TEMPEH FERMENTATION
title_sort dynamics of microbial community during tempeh fermentation
topic Firmicutes
high-throughput sequencing
Proteobacteria
starter culture
tempeh
url https://journal.biotrop.org/index.php/biotropia/article/view/820
work_keys_str_mv AT antoniussuwanto dynamicsofmicrobialcommunityduringtempehfermentation