The identification and evaluation of two different color variations of tea

Li, Yuchen; Chen, Changsong; Li, Yusheng; Ding, Zhaotang; Shen, Jiazhi; Wang, Yu; Жао, Леи; Xu, Meng

doi:10.1002/jsfa.7897

Cited by 24 publications

(27 citation statements)

References 51 publications

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“…Tea polyphenols, including naringin, quercetin, naringenin, kaempferol, ECG, and EGCG, were responsible for the bitterness, astringency, and sweet aftertaste of tea beverages (Li et al, 2016). The level of tea polyphenols in shoots may be a reliable parameter for identifying high quality (Obanda et al, 2015).…”

Section: Resultsmentioning

confidence: 99%

“…Therefore, the germplasm appraisal using different biochemical parameters affecting tea quality is essential for selecting desirable varieties. In recent years, many germplasm appraisal methods, such as morphology, biochemistry, molecular markers, and sensory evaluation, have been used to evaluate tea germplasm resources (Feng et al, 2014;Li et al, 2016;Wambulwa et al, 2016). Phenotype can be referred to a good standard for the evaluation of tea germplasm.…”

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confidence: 99%

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The Quality Evaluation of Tea (Camellia sinensis) Varieties Based on the Metabolomics

Gai¹,

Wang²,

Jiang³

et al. 2019

horts

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The identification and evaluation of tea [Camellia sinensis (L.) O. Kuntze] germplasm resources are of great significance for tea plant breeding. In recent years, various methods, such as morphology, biochemistry, molecular markers, and sensory evaluation, have been used to evaluate the tea germplasm resources. However, the evaluation of tea germplasms based on metabolomics is rarely reported. In this study, we first measured the main agronomic characters and biochemical components of tea young shoots in spring, and then analyzed the metabolic profiles using gas chromatography-mass spectrometry (GC-MS) and liquid chromatography with tandem mass spectrometry (LC-MS/MS). The results indicate that tea germplasm accessions QN3 and QN38 had excellent agronomic traits with early germination and high yield compared with HM. The biosynthesis of flavonoids in young shoots of QN3 was more vigorous, especially for the biosynthesis of epigallocatechin gallate (EGCG) and epicatechin gallate (ECG). Accession QN3 had highest content of luteoloside, myricetin and rutin, whereas QN38 had highest content of most amino acids. On the basis of sensory quality evaluation, accession QN3 and QN38 all had higher total quality scores. By using these approaches, we found that QN3 and QN38 are excellent breeding materials with high yield and high quality for making green teas. We also believe that the evaluation system constructed by the approaches described here is suitable for the identification of tea germplasms.

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Section: Resultsmentioning

confidence: 99%

mentioning

confidence: 99%

The Quality Evaluation of Tea (Camellia sinensis) Varieties Based on the Metabolomics

Gai¹,

Wang²,

Jiang³

et al. 2019

horts

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“…Finally, samples were ready for LC - MS (Waters, Milford, MA, USA) detection. More detailed methods for LC-MS procedures have been described in the previous report ( 23 ).…”

Section: Methodsmentioning

confidence: 99%

Rumen Microbiome and Metabolome of Tibetan Sheep (Ovis aries) Reflect Animal Age and Nutritional Requirement

et al. 2020

Front. Vet. Sci.

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The rumen microbiota plays an important role in animal functional attributes. These microbes are indispensable for the normal physiological development of the rumen, and may also convert the plant polysaccharides from grass into available milk and meat, making it highly valuable to humans. Exploring the microbial composition and metabolites of rumen across developmental stages is important for understanding ruminant nutrition and metabolism. However, relatively few reports have investigated the microbiome and metabolites across developmental stages in ruminants. Using 16S rRNA gene sequnecing, metabolomics and high-performance liquid chromatography techniques, we compared the rumen microbiota, metabolites and short chain fatty acids (SCFAs) between lambs and sub-adult Tibetan sheep ( Ovis aries ) from Qinghai-Tibetan Plateau. Bacteroidetes and Spirochaetae were enriched in sub-adult sheep, while Firmicutes and Tenericutes were more abundant in young individuals. The sub-adult individuals had higher alpha diversity values than those in young sheep. Metabolomics analysis showed that the content of essential amino acids and related gene functional pathways in rumen were different between the lambs and sub-adult population. L-Leucine that participates in valine, leucine and isoleucine biosynthesis was more abundant in the lambs, while phenylethylamine that takes part in phenylalanine metabolism was more enriched in the sub-adults. Both rumen microbial community structures and metabolite profiles were impacted by age, but rumen SCFA concentration was relatively stable between different age stages. Some specific microbes (e.g., Clostridium and Ruminococcaceae) were positively associated with L-Leucine but negatively correlated with phenylethylamine, implying that rumen microbes may play different roles for metabolite production at different ages. Mantel test analysis showed that rumen microbiota was significantly correlated with metabolomics and SCFA profiles. Our results indicates the close relationship between microbial composition and metabolites, and also reveal different nutritional requirement for different ages in ruminants, thus having important significance for regulating animal nutrition and metabolism by microbiome intervention.

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“…The importance of using genetic resources in breeding programs to enhance crop genetic potential has been well recognized [6]. Many germplasm appraisal methods, such as morphology, biochemistry, molecular markers, and sensory evaluation, have been used to evaluate the resources of tea germplasm [7][8][9]. The phenotype can be referred to as a good standard for the evaluation of tea germplasm, because this method is simply based on the morphological traits to analyze the genetic diversity assessment [10].…”

Section: Introductionmentioning

confidence: 99%

Assessment of Genetic Diversity of Tea Germplasm for Its Management and Sustainable Use in Korea Genebank

Lee

Raveendar

et al. 2019

Forests

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Tea (Camellia sinensis (L.) O. Kuntze) is cultivated in many developing Asian, African, and South American countries, and is the most widely consumed beverage in the world. It is of critical importance to understand the genetic diversity and population structure of tea germplasm for effective collection, conservation, and utilization. In this study, 410 tea accessions collected from South Korea were analyzed using 21 simple sequence repeat (SSR) markers. Among 410 tea accessions, 85.4% (350 accessions) were collected from Jeollanam-do. A total of 286 alleles were observed, and the genetic diversity and evenness were estimated to be on average 0.79 and 0.61, respectively, across all the tested samples. Using discriminant analysis of principal components, four clusters were detected in 410 tea accessions. Among them, cluster 1 showed a higher frequency of rare alleles (less than 1%). Using the calculation of the index of association and rbaD value, each cluster showed a clonal mode of reproduction. The result of analysis of molecular variance (AMOVA) showed that most of the variation observed was within populations (99%) rather than among populations (1%). The present study revealed the presence of lower diversity and simpler population structure in Korean tea germplasms. Consequently, more attention should be focused on collecting and conserving the new tea individuals to broaden genetic variation of new cultivars in future breeding of the tea plant.

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The identification and evaluation of two different color variations of tea

Cited by 24 publications

References 51 publications

The Quality Evaluation of Tea (Camellia sinensis) Varieties Based on the Metabolomics

The Quality Evaluation of Tea (Camellia sinensis) Varieties Based on the Metabolomics

Rumen Microbiome and Metabolome of Tibetan Sheep (Ovis aries) Reflect Animal Age and Nutritional Requirement

Assessment of Genetic Diversity of Tea Germplasm for Its Management and Sustainable Use in Korea Genebank

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