Bioactive Compounds and Microbial Quality of Stored Fermented Red Beetroots and Red Beetroot Juice

The aim of this study was to investigate the effect of long-term cold storage of fermented beetroots and fermented beetroot juice on the content of biologically active compounds and microorganisms. Contents of total phenolics, as well as red and yellow betalains were determined. Total phenolics cont...

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Main Authors: Agata Czyżowska, Kinga Siemianowska, Monika Śniadowska, Agnieszka Nowak
Format: Article
Language:English
Published: Institute of Animal Reproduction and Food Research of the Polish Academy of Sciences 2020-02-01
Series:Polish Journal of Food and Nutrition Sciences
Subjects:
Online Access:http://www.journalssystem.com/pjfns/Bioactive-compounds-and-microbial-quality-of-stored-fermented-red-beetroots-and-red,116611,0,2.html
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author Agata Czyżowska
Kinga Siemianowska
Monika Śniadowska
Agnieszka Nowak
author_facet Agata Czyżowska
Kinga Siemianowska
Monika Śniadowska
Agnieszka Nowak
author_sort Agata Czyżowska
collection DOAJ
description The aim of this study was to investigate the effect of long-term cold storage of fermented beetroots and fermented beetroot juice on the content of biologically active compounds and microorganisms. Contents of total phenolics, as well as red and yellow betalains were determined. Total phenolics content in fermented grated beetroot was 920 mg/kg after 7 months of cold storage, while in juice it was 810 mg/L within the same time span. At the end of the experiment, after 10 months of storage, these values decreased to 570 mg/kg and 540 mg/L, respectively. Concentration of red betalains after 7 months of storage was determined at 116 mg/kg for grated beetroot and at 69 mg/L for juice. At the same time, the content of yellow betalains was 14 mg/kg and 19 mg/L for grated beetroot and juice, respectively. In the case of fermented beets and juice, about 3-fold decrease of red pigments was observed during storage. Bioactive compounds were identified using LC-MS. Betanidin was shown to be the major compound among grated beetroot pigments at the beginning of the investigation, the beetroot juice was predominated by isobetanidin and betanidin. At the end of the study, the proportion of pigments changed slightly. Lactic acid bacteria predominated among the bacterial microbiota in the products tested. Enterobacteriaceae were not detected in fermented grated beetroots and investigated juices throughout storage time. To conclude, during long-term cold storage, the content of bioactive compounds decreases, however, remains at a high level.
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record_format Article
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spelling doaj-art-8ffcbd313a524db5b40c66a52f07b3fb2025-02-02T18:46:44ZengInstitute of Animal Reproduction and Food Research of the Polish Academy of SciencesPolish Journal of Food and Nutrition Sciences2083-60072020-02-01701354410.31883/pjfns/116611116611Bioactive Compounds and Microbial Quality of Stored Fermented Red Beetroots and Red Beetroot JuiceAgata Czyżowska0Kinga Siemianowska1Monika Śniadowska2Agnieszka Nowak3Department of Biotechnology and Food Sciences, Lodz University of Technology, Stefanowskiego 171/173, 09-924 Lodz, PolandDepartment of Biotechnology and Food Sciences, Lodz University of Technology, Stefanowskiego 171/173, 09-924 Lodz, PolandDepartment of Biotechnology and Food Sciences, Lodz University of Technology, Stefanowskiego 171/173, 09-924 Lodz, PolandDepartment of Biotechnology and Food Sciences, Lodz University of Technology, Stefanowskiego 171/173, 09-924 Lodz, PolandThe aim of this study was to investigate the effect of long-term cold storage of fermented beetroots and fermented beetroot juice on the content of biologically active compounds and microorganisms. Contents of total phenolics, as well as red and yellow betalains were determined. Total phenolics content in fermented grated beetroot was 920 mg/kg after 7 months of cold storage, while in juice it was 810 mg/L within the same time span. At the end of the experiment, after 10 months of storage, these values decreased to 570 mg/kg and 540 mg/L, respectively. Concentration of red betalains after 7 months of storage was determined at 116 mg/kg for grated beetroot and at 69 mg/L for juice. At the same time, the content of yellow betalains was 14 mg/kg and 19 mg/L for grated beetroot and juice, respectively. In the case of fermented beets and juice, about 3-fold decrease of red pigments was observed during storage. Bioactive compounds were identified using LC-MS. Betanidin was shown to be the major compound among grated beetroot pigments at the beginning of the investigation, the beetroot juice was predominated by isobetanidin and betanidin. At the end of the study, the proportion of pigments changed slightly. Lactic acid bacteria predominated among the bacterial microbiota in the products tested. Enterobacteriaceae were not detected in fermented grated beetroots and investigated juices throughout storage time. To conclude, during long-term cold storage, the content of bioactive compounds decreases, however, remains at a high level.http://www.journalssystem.com/pjfns/Bioactive-compounds-and-microbial-quality-of-stored-fermented-red-beetroots-and-red,116611,0,2.htmlbeetroot fermentationbetalainsbioactive compoundslc-ms
spellingShingle Agata Czyżowska
Kinga Siemianowska
Monika Śniadowska
Agnieszka Nowak
Bioactive Compounds and Microbial Quality of Stored Fermented Red Beetroots and Red Beetroot Juice
Polish Journal of Food and Nutrition Sciences
beetroot fermentation
betalains
bioactive compounds
lc-ms
title Bioactive Compounds and Microbial Quality of Stored Fermented Red Beetroots and Red Beetroot Juice
title_full Bioactive Compounds and Microbial Quality of Stored Fermented Red Beetroots and Red Beetroot Juice
title_fullStr Bioactive Compounds and Microbial Quality of Stored Fermented Red Beetroots and Red Beetroot Juice
title_full_unstemmed Bioactive Compounds and Microbial Quality of Stored Fermented Red Beetroots and Red Beetroot Juice
title_short Bioactive Compounds and Microbial Quality of Stored Fermented Red Beetroots and Red Beetroot Juice
title_sort bioactive compounds and microbial quality of stored fermented red beetroots and red beetroot juice
topic beetroot fermentation
betalains
bioactive compounds
lc-ms
url http://www.journalssystem.com/pjfns/Bioactive-compounds-and-microbial-quality-of-stored-fermented-red-beetroots-and-red,116611,0,2.html
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AT kingasiemianowska bioactivecompoundsandmicrobialqualityofstoredfermentedredbeetrootsandredbeetrootjuice
AT monikasniadowska bioactivecompoundsandmicrobialqualityofstoredfermentedredbeetrootsandredbeetrootjuice
AT agnieszkanowak bioactivecompoundsandmicrobialqualityofstoredfermentedredbeetrootsandredbeetrootjuice