Flavor of tea (Camellia sinensis): A review on odorants and analytical techniques

Comprehensive Reviews in Food Science and Food Safety, Год журнала: 2022, Номер 21(5), С. 3867 - 3909

Опубликована: Июль 9, 2022

Abstract Tea is among the most consumed nonalcoholic beverages worldwide. Understanding tea flavor, in terms of both sensory aspects and chemical properties, essential for manufacturers consumers to maintain high quality products correctly distinguish acceptable or unacceptable products. This article gives a comprehensive review on aroma off‐flavor characteristics associated with 184 odorants. Although many efforts have been made toward characterization flavor compounds different types tea, modern analytical techniques that affect results analysis not compared summarized systematically up now. Thus, overview mainly provides instrumental taste (i.e., extraction enrichment, qualitative, quantitative, chemometric approaches) as well descriptive methodologies which helpful researchers. Flavor developments evolved time‐saving, portability, real‐time monitoring, visualization are also prospected get deeper insight into influences processing formation changes compounds, especially desired substances present at (ultra)trace amounts

Язык: Английский

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Characterization of white tea metabolome: Comparison against green and black tea by a nontargeted metabolomics approach

Food Research International, Год журнала: 2017, Номер 96, С. 40 - 45

Опубликована: Март 12, 2017

Язык: Английский

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Impact of Six Typical Processing Methods on the Chemical Composition of Tea Leaves Using a Single Camellia sinensis Cultivar, Longjing 43

Journal of Agricultural and Food Chemistry, Год журнала: 2018, Номер 67(19), С. 5423 - 5436

Опубликована: Ноя. 7, 2018

While the Camellia sinensis cultivar and processing method are key factors that affect tea flavor aroma, chemical changes in nonvolatile components associated with using a single of C. have not been reported. Fresh leaves from Longjing 43 were subjected to six methods evaluated by targeted untargeted chromatographic procedures. On basis assessment total catechin content, three clusters identified: yellow–green, oolong–white–dark, black. However, principal component analysis metabolome identified four phenotypes: green–yellow, oolong, black–white, dark. Differences non-catechin included amino acids γ-aminobutyric acid, which increased white tea, dihydroxyphenylalanine, valine, betaine, theophylline, dark tea. Overall, this study wide range chemicals affected commonly used potentially bioactivity various types.

Язык: Английский

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Application of metabolomics profiling in the analysis of metabolites and taste quality in different subtypes of white tea

Food Research International, Год журнала: 2018, Номер 106, С. 909 - 919

Опубликована: Янв. 31, 2018

Язык: Английский

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Metabolomics combined with proteomics provides a novel interpretation of the changes in nonvolatile compounds during white tea processing

Food Chemistry, Год журнала: 2020, Номер 332, С. 127412 - 127412

Опубликована: Июнь 24, 2020

Язык: Английский

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Aroma profiles of green tea made with fresh tea leaves plucked in summer

Food Chemistry, Год журнала: 2021, Номер 363, С. 130328 - 130328

Опубликована: Июнь 9, 2021

Язык: Английский

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A critical review of key odorants in green tea: Identification and biochemical formation pathway

Trends in Food Science & Technology, Год журнала: 2022, Номер 129, С. 221 - 232

Опубликована: Сен. 23, 2022

Язык: Английский

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Bitter and astringent substances in green tea: composition, human perception mechanisms, evaluation methods and factors influencing their formation

Food Research International, Год журнала: 2022, Номер 157, С. 111262 - 111262

Опубликована: Апрель 21, 2022

Язык: Английский

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Root microbiota of tea plants regulate nitrogen homeostasis and theanine synthesis to influence tea quality

Current Biology, Год журнала: 2024, Номер 34(4), С. 868 - 880.e6

Опубликована: Фев. 1, 2024

The flavor profile of tea is influenced not only by different varieties but also the surrounding soil environment. Recent studies have indicated regulatory role microbes residing in plant roots nutrient uptake and metabolism. However, impact this mechanism on quality remains unclear. In study, we showed that a consortium isolated from enhanced ammonia facilitated synthesis theanine, key determinant taste. Variations were observed composition microbial populations colonizing rhizosphere across seasons varieties. By comparing root microorganisms high-theanine variety Rougui with low-theanine Maoxie, identified specific group potentially modulate nitrogen metabolism, subsequently influencing theanine levels tea. Furthermore, constructed synthetic community (SynCom) mirroring microbe population found roots. Remarkably, applying SynCom resulted significant increase content plants imparted greater tolerance to deficiency Arabidopsis. Our study provides compelling evidence supporting use as functional fertilizers enhance quality.

Язык: Английский

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Integrating Ultra‐High‐Performance Liquid Chromatography and Orbitrap High‐Resolution Mass Spectrometry, Feature‐Based Molecular Networking, and Network Medicine to Unlock Harvesting Strategies for Endangered Sinocalycanthus Chinensis

Journal of Separation Science, Год журнала: 2025, Номер 48(1)

Опубликована: Янв. 1, 2025

Evaluating the practical utility of endangered plant species is crucial for their conservation. Nevertheless, numerous plants, including Sinocalycanthus chinensis, lack historical usage data, leading to a paucity guidance in traditional pharmacological research. This gap impedes development and potential utilization. Ultra-high-performance liquid chromatography Orbitrap high-resolution mass spectrometry were employed analyze S. chinensis leaves collected at different harvesting times. Then, metabolites automatically annotated by self-built R script conjunction with characteristic fragment ions, neutral loss filtering, feature-based molecular networking. By integrating metabolomics network medicine analysis, optimal harvest times unlocked. A total 305 identified, 66.8% script. progressive increase metabolite disparities was observed from May August, followed relatively minor distinction August October. Notably diverse detected harvested during periods, implying variations efficacy. Network analysis indicated possible therapeutic implications lung cancer, diabetes, bladder Alzheimer's disease. Samples September demonstrated exceptional Harvesting strategically conducted these months based on sample characteristics content, tailored intended applications dietary or medicinal purposes. study developed an efficient methodology investigating exploring food herbal medicine. Consequently, it provides technical support sustainable conservation plants limited clinical application experience.

Язык: Английский

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