Untargeted Metabolomics Combined with Bioassay Reveals the Change in Critical Bioactive Compounds during the Processing of Qingzhuan Tea

Qingzhuan tea (QZT) is a typical Chinese dark tea that has a long-time manufacturing process. In the present study, liquid chromatography coupled with tandem mass spectrometry was used to study the chemical changes of tea samples during QZT processing. Untargeted metabolomics analysis revealed that...

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Autores principales: Peng-Cheng Zheng, Chun-Yin Qin, Pan-Pan Liu, Lin Feng, Tie-Jun Ling, Jing-Ming Ning, Liang Zhang, Xiao-Chun Wan
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Publicado: MDPI AG 2021
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Acceso en línea:https://doaj.org/article/e279119dd110413fab4707fed6f2424d
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spelling oai:doaj.org-article:e279119dd110413fab4707fed6f2424d2021-11-11T18:39:36ZUntargeted Metabolomics Combined with Bioassay Reveals the Change in Critical Bioactive Compounds during the Processing of Qingzhuan Tea10.3390/molecules262167181420-3049https://doaj.org/article/e279119dd110413fab4707fed6f2424d2021-11-01T00:00:00Zhttps://www.mdpi.com/1420-3049/26/21/6718https://doaj.org/toc/1420-3049Qingzhuan tea (QZT) is a typical Chinese dark tea that has a long-time manufacturing process. In the present study, liquid chromatography coupled with tandem mass spectrometry was used to study the chemical changes of tea samples during QZT processing. Untargeted metabolomics analysis revealed that the pile-fermentation and turnover (post-fermentation, FT) was the crucial stage in transforming the main compounds of QZT, whose contents of flavan-3-ols and flavonoids glycosides were decreased significantly. The bioactivities, including the antioxidant capacities and inhibitory effects on α-amylase and α-glucosidase, were also reduced after the FT process. It was suggested that although the QZT sensory properties improved following pile-fermentation and aging, the bioactivities remained restrained. Correlation analysis indicated that the main galloylated catechins and flavonoid glycosides were highly related to their antioxidant capacity and inhibitory effects on α-amylase and α-glucosidase.Peng-Cheng ZhengChun-Yin QinPan-Pan LiuLin FengTie-Jun LingJing-Ming NingLiang ZhangXiao-Chun WanMDPI AGarticleqingzhuan teametabolomicspile-fermentationsensory evaluationbioactivitiesOrganic chemistryQD241-441ENMolecules, Vol 26, Iss 6718, p 6718 (2021)
institution DOAJ
collection DOAJ
language EN
topic qingzhuan tea
metabolomics
pile-fermentation
sensory evaluation
bioactivities
Organic chemistry
QD241-441
spellingShingle qingzhuan tea
metabolomics
pile-fermentation
sensory evaluation
bioactivities
Organic chemistry
QD241-441
Peng-Cheng Zheng
Chun-Yin Qin
Pan-Pan Liu
Lin Feng
Tie-Jun Ling
Jing-Ming Ning
Liang Zhang
Xiao-Chun Wan
Untargeted Metabolomics Combined with Bioassay Reveals the Change in Critical Bioactive Compounds during the Processing of Qingzhuan Tea
description Qingzhuan tea (QZT) is a typical Chinese dark tea that has a long-time manufacturing process. In the present study, liquid chromatography coupled with tandem mass spectrometry was used to study the chemical changes of tea samples during QZT processing. Untargeted metabolomics analysis revealed that the pile-fermentation and turnover (post-fermentation, FT) was the crucial stage in transforming the main compounds of QZT, whose contents of flavan-3-ols and flavonoids glycosides were decreased significantly. The bioactivities, including the antioxidant capacities and inhibitory effects on α-amylase and α-glucosidase, were also reduced after the FT process. It was suggested that although the QZT sensory properties improved following pile-fermentation and aging, the bioactivities remained restrained. Correlation analysis indicated that the main galloylated catechins and flavonoid glycosides were highly related to their antioxidant capacity and inhibitory effects on α-amylase and α-glucosidase.
format article
author Peng-Cheng Zheng
Chun-Yin Qin
Pan-Pan Liu
Lin Feng
Tie-Jun Ling
Jing-Ming Ning
Liang Zhang
Xiao-Chun Wan
author_facet Peng-Cheng Zheng
Chun-Yin Qin
Pan-Pan Liu
Lin Feng
Tie-Jun Ling
Jing-Ming Ning
Liang Zhang
Xiao-Chun Wan
author_sort Peng-Cheng Zheng
title Untargeted Metabolomics Combined with Bioassay Reveals the Change in Critical Bioactive Compounds during the Processing of Qingzhuan Tea
title_short Untargeted Metabolomics Combined with Bioassay Reveals the Change in Critical Bioactive Compounds during the Processing of Qingzhuan Tea
title_full Untargeted Metabolomics Combined with Bioassay Reveals the Change in Critical Bioactive Compounds during the Processing of Qingzhuan Tea
title_fullStr Untargeted Metabolomics Combined with Bioassay Reveals the Change in Critical Bioactive Compounds during the Processing of Qingzhuan Tea
title_full_unstemmed Untargeted Metabolomics Combined with Bioassay Reveals the Change in Critical Bioactive Compounds during the Processing of Qingzhuan Tea
title_sort untargeted metabolomics combined with bioassay reveals the change in critical bioactive compounds during the processing of qingzhuan tea
publisher MDPI AG
publishDate 2021
url https://doaj.org/article/e279119dd110413fab4707fed6f2424d
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