Li Guo, Zhenghua Du, Zan Wang, Lin Zhi, Yaling Guo, Mingjie Chen,
Tieguanyin tea is a typical representative of oolong tea in China, and is famous for its orchid- ... production. However, fatty acid contents and compositions in Tieguanyin largely remain undefined. In this study, we quantified the fatty acid composition in Tieguanyin and its offspring by gas chromatography–flame ionization ... results showed that total fatty acid contents in Tieguanyin fresh leaves were higher than its offspring. Growth sites had significant impacts on fatty acid contents. Tieguanyin grown in Anxi County showed higher total fatty ...
Tópico(s): Plant biochemistry and biosynthesis
2019 - Springer Science+Business Media | Journal of Food Science and Technology
Qinghua Yao, Lin Qiu, Sun’an YAN, Minmin Huang, Lihua Chen,
... possible route of human exposure to undesirable elements. Tieguanyin tea and white tea are widely-consumed beverage, ... risks of these elements were studied from 72 Tieguanyin tea samples and 40 white tea samples from ... order from F, Pb, Cr to Cd in Tieguanyin tea, while white tea in order from F, ... a weak positive correlation between Pb/Cd pairs (Tieguanyin tea) and Pb/Cr pairs (white tea). A ... correlation pair was found for Cr/Cd in Tieguanyin tea. The hazard index levels were below one, ... Pb, Cd, and Cr via the consumption of Tieguanyin tea and white tea were 4.01×10- ...
Tópico(s): Heavy metals in environment
2021 - Sociedade Brasileira de Ciência e Tecnologia de Alimentos | Food Science and Technology
Wei Wang, Shan Jin, Yaling Guo,
... based method for distinguishing different grades of Nongxiang Tieguanyin was explored by taking special grade (K110) and ... of aroma components among different grades of Nongxiang Tieguanyin tea. In the principal component analysis (PCA) scoring ... accurate approach for discriminating different grades of Nongxiang Tieguanyin. The screened differential variables could represent a difference in aroma quality among five grades of Nongxiang Tieguanyin tea. Clear rules between peak area and the ... study provides a potential method for differentiating Nongxiang Tieguanyin teas of different grades based on aroma. Unknown ...
Tópico(s): Fermentation and Sensory Analysis
2019 - Multidisciplinary Digital Publishing Institute | Molecules
Qinghua Yao, Sun’an YAN, Jie Li, Minmin Huang, Lin Qiu,
... of 42 pesticides subject to public concern in Tieguanyin tea produced in Fujian, China. The presence of 42 pesticide residues in 90 Tieguanyin tea samples were determined. A total of 17 ... 16.7% of samples, respectively. Pesticide residues in Tieguanyin tea varied significantly over the seasons and across ... despite a high occurrence of pesticide residues in Tieguanyin tea, residue levels observed could not be considered ... The suggestions for 17 detected pesticides used in Tieguanyin tea plantation were made, including those already banned ...
Tópico(s): Analytical chemistry methods development
2020 - Taylor & Francis | Drug and Chemical Toxicology
Feihu Song, Xiang Hao, Zhenfeng Li, Jing Li, Luqing Li, Chun Fang Song,
Roasting is extremely important for Tieguanyin oolong tea production because it strongly affects its chemical composition and sensory quality. In addition, there were significant differences in the ... on the aroma characteristics and flavor quality of Tieguanyin tea is still unclear. To further study this, ... was used to monitor the baking process of Tieguanyin. The physicochemical indexes, sensory quality, and odor characteristics ... on the flavor, chemical composition, and aroma of Tieguanyin as well as in distinguishing Tieguanyin tea leaves ...
Tópico(s): Fermentation and Sensory Analysis
2023 - Elsevier BV | Food Research International
Hui Tan, Li Yan Chan, Huei Hong Lee, Yong‐Quan Xu, Weibiao Zhou,
... main varieties – Guangdong Dancong, Taiwan Dongding, and Anxi Tieguanyin – were analysed and four discriminant analysis models were ... the study involved detecting possible adulteration of Anxi Tieguanyin, which is a high-value oolong tea under ... of the European Union (EU). Adulteration of Anxi Tieguanyin was simulated by blending the authentic samples with ... of class analogies (DD-SIMCA), with the Anxi Tieguanyin as the target class, was built using the ... is possible to detect substitution adulteration of Anxi Tieguanyin using ASAP-MS combined with one-class modelling. ...
Tópico(s): Advanced Chemical Sensor Technologies
2021 - Elsevier BV | Food Control
Si-Min Yan, Junping Liu, Lu Xu, Xian‐Shu Fu, Haifeng Cui, Zhenyu Yun, Xiaoping Yu, Zihong Ye,
... way to discriminate the geographical origin of Anxi-Tieguanyin tea by near-infrared (NIR) spectroscopy and chemometrics. ... from Anxi County, the original producing area of Tieguanyin tea, and another 120 Tieguanyin samples with similar appearance were collected from unprotected ... to discriminate the geographical producing area of Anxi-Tieguanyin.
Tópico(s): Fermentation and Sensory Analysis
2014 - Hindawi Publishing Corporation | Journal of Analytical Methods in Chemistry
Yuefei Wang, Dedong Kong, Yuanyuan Gao, Le Ying, Qianfei Huang, Ping Xu,
... TBF), and water fraction (TWF), were obtained from Tieguanyin oolong tea, which is considered a typical type ... TBF), and water fraction (TWF), were obtained from Tieguanyin oolong tea. Further tests showed that TEF and TBF from Tieguanyin oolong tea possessed remarkable antioxidant activity and inhibitory ... and flavonoids. Thus, the phenolic-enriched extracts from Tieguanyin tea are expected to have a potential application ...
Tópico(s): Phytochemistry and Biological Activities
2019 - Wiley | Journal of Food Biochemistry
Jiajia Li, Qiong Xiao, Yufeng Huang, Hui Ni, Changzheng Wu, Anfeng Xiao,
Inferior Tieguanyin oolong tea leaves were treated with tannase. The content and bioactivity of catechins in extracts from the ... assess the improvement in the quality of inferior Tieguanyin oolong tea. Analysis showed that after treatment, the ... tannase treatment could improve the quality of inferior Tieguanyin oolong tea leaves.
Tópico(s): Phytochemicals and Antioxidant Activities
2017 - Elsevier BV | Electronic Journal of Biotechnology
Yuqiong Guo, Chen Zhu, Shanshan Zhao, Shuting Zhang, Wenjian Wang, Haifeng Fu, Xiaozhen Li, Chengzhe Zhou, Lan Chen, Yuling Lin, Zhongxiong Lai,
... two original plants of the oolong tea cultivar ('Tieguanyin') are "Wei shuo" 'Tieguanyin'—TGY (Wei) and "Wang shuo" 'Tieguanyin'—TGY (Wang). Another cultivar, 'Benshan' (BS), is similar ...
Tópico(s): Phytochemicals and Antioxidant Activities
2019 - BioMed Central | BMC Genomics
Peng Zhou, Ou Hu, Haiyan Fu, Li-Qun Ouyang, Xuedong Gong, Peng Meng, Zheng Wang, Ming Dai, Xiaoming Guo, Ying Wang,
The taste and aroma quality of Tieguanyin tea fluctuate seasonally and yearly. However, the compounds responsible for the seasonal and year variations of metabolic pattern and its sensory quality are far from clear. 60 Tieguanyin tea samples harvested in different years and seasons ... Subsequently, heat map analysis (HCA) visualized relationships between Tieguanyin teas with these significantly different potential metabolites by ...
Tópico(s): Traditional Chinese Medicine Analysis
2019 - Elsevier BV | Food Chemistry
Xiaoxue Yang, Zheng Peng, Qi Zhu, Chengcong Chen, Jiheng Liu, Songtao Fu, Juan Zhang,
Aged Tieguanyin has a unique, long-lasting aged aroma. However, a lack of research has hindered further improvements in ... analyzed the compounds contributing to the aroma of Tieguanyin at different aging times and correlated the results ... Cyberlindnera were the core functional microorganisms of aged Tieguanyin. These genera had the potential to promote the ...
Tópico(s): Phytochemicals and Antioxidant Activities
2023 - Elsevier BV | LWT
Yuhang Jiang, Mohammad Reza Boorboori, Yina Xu, Wenxiong Lin,
... type of tea to be good for health. Tieguanyin is one of the famous traditional Chinese tea ... the various characteristics in volatile fragment compounds from Tieguanyin tea, fresh tea leaves collected from different elevations ( ... for the preparation of tea manufacturing in major Tieguanyin tea-producing regions.
Tópico(s): Phytochemicals and Antioxidant Activities
2021 - Wiley | Journal of Food Science
Tieguanyin is one of the top ten most popular teas and the representative of oolong tea in ... the total weight of tea samples, mixed with Tieguanyin. Taking the fluorescence spectra from 475 to 1000 ... among the 6-class discriminant models (0% (pure Tieguanyin), 10, 20, 30, 40, and 50%), with the ...
Tópico(s): Tea Polyphenols and Effects
2022 - Multidisciplinary Digital Publishing Institute | Molecules
Qinghua Yao, Minmin Huang, Yunyun Zheng, Meizhen Chen, Chongyao Huang, Lin Qiu,
... the dietary exposure risk that heavy metals in Tieguanyin tea (a famous type of oolong tea,) pose ... Pb, Cr, Cd, and Ni) of concern in Tieguanyin tea were monitored, then the related health risk ... that exposure to these five elements via drinking Tieguanyin tea would not pose significant non-cancer risks ...
Tópico(s): Therapeutic Uses of Natural Elements
2022 - Multidisciplinary Digital Publishing Institute | Foods
Sijie Lin, Ji Lin, Q.L. Liu, Yeru Ai, Yuzhou Ke, C. Chen, Zi-Chang ZHANG, Huaqin He,
Abstract Tieguanyin tea plants (Camellia sinensis (L.) O. Kuntze) are commonly grown at high elevation for good quality of ... experiments were conducted to investigate the responses of Tieguanyin tea plants to deficit (DI) and severe deficit ... serve as an indicator of water stress in Tieguanyin tea plants. In conclusion, a well-designed DI ...
Tópico(s): Plant Stress Responses and Tolerance
2014 - Elsevier BV | Agricultural Water Management
Yanjie Li, Jincan Lei, Junnian Yang, Renhua Liu,
Analysis of four Tieguanyin teas from different origins were performed using an electronic tongue, which has significant advantages in terms of accuracy and ... tongue with pattern recognition is suitable to classify Tieguanyin tea and shows broad potential in food inspection ...
Tópico(s): Metabolomics and Mass Spectrometry Studies
2014 - Taylor & Francis | Analytical Letters
Yong‐Quan Xu, Panpan Liu, John Shi, Ying Gao, Qiushuang Wang, Jun‐Feng Yin,
The Tieguanyin oolong tea is popular in China. However, the quality development and chemical change during processing were still ... to investigate the chemical compositions and quality of Tieguanyin oolong teas processed from different leaves of fresh ...
Tópico(s): Fermentation and Sensory Analysis
2018 - Elsevier BV | Food Chemistry
Si Chen, Jun Lin, Huihui Liu, Zhihong Gong, Xiaoxia Wang, Ho‐Keung Ng, Asaph Aharoni, Zhenbiao Yang, Xiaomin Yu,
... different tissues in a premium oolong tea cultivar, Tieguanyin, which is gaining worldwide popularity due to its ... novel insights into tissue-specific specialized metabolism in Tieguanyin, which provides a good reference point to explore ...
Tópico(s): Ginseng Biological Effects and Applications
2018 - Multidisciplinary Digital Publishing Institute | Molecules
Yating Li, Jun Sun, Xiaohong Wu, Bing Lu, Minmin Wu, Chunxia Dai,
... proposed in this paper. A total of 309 Tieguanyin tea samples with three different grades were collected ... SVM model can accurately identify the grade of Tieguanyin tea. Practical Application The rapid and accurate nondestructive ...
Tópico(s): Tea Polyphenols and Effects
2019 - Wiley | Journal of Food Science
Tieguanyin tea plant is the most important tea cultivar in Fujian Province, China. It has suffered great ... prediction model for daily reference evapotranspiration (ET0) of Tieguanyin based on the combination of mathematical morphology clustering ( ...
Tópico(s): Greenhouse Technology and Climate Control
2020 - Elsevier BV | Agricultural Water Management
Shuilian Gao, Shanshan Hu, Peng He, Kai Feng, Rong-Yi Pan, Shuai Zhang, Bin Guo, Tzan‐Chain Lee, Jinke Lin,
... reducing chemical fertilizer on the quality components of Tieguanyin tea leaves, Tieguanyin tea garden located in yellow-red soil was ...
Tópico(s): Fermentation and Sensory Analysis
2020 - IOP Publishing | IOP Conference Series Earth and Environmental Science
Jiaqi Lin, Hongzheng Lin, Chenxue Li, Ningkai Liao, Yucheng Zheng, Xinru Yu, Yun Sun, Liangyu Wu,
... from the enzymatic-catalyzed-process (ECP) stage of Tieguanyin oolong tea manufacturing. The result of DESI-MSI ... facilitating to the development of characteristic quality of Tieguanyin tea.
Tópico(s): Fermentation and Sensory Analysis
2024 - Elsevier BV | Food Research International
Chunyi Zhan, Jie Sun, Chunyi Zhan, Peng Huang, Zhiliang Kang,
... 1000 nm) for qualitative and quantitative analysis of Tieguanyin (Tie) adulteration was proposed. In this study, various ... accurate prediction of the type of adulteration of Tieguanyin. For quantitative prediction, both RF and partial least ...
Tópico(s): Advanced Chemical Sensor Technologies
2023 - Elsevier BV | Journal of Food Composition and Analysis
Chenxue Li, Jiaqi Lin, Qingcai Hu, Yun Sun, Liangyu Wu,
... components in samples from various processing steps of Tieguanyin oolong tea production were investigated using widely-targeted ... promoting the characteristic mellow and rich flavor of Tieguanyin oolong tea.
Tópico(s): Fermentation and Sensory Analysis
2023 - Elsevier BV | Food Chemistry X
Qing-Qing Cao, Yanqing Fu, Jieqiong Wang, Liang Zhang, Fang Wang, Jun‐Feng Yin, Yong‐Quan Xu,
... process for oolong tea, has been applied to Tieguanyin tea to improve flavor attributes. To investigate the effects of the roasting on the flavor of Tieguanyin, the global metabolomics analysis on the non-volatile ...
Tópico(s): Phytochemicals and Antioxidant Activities
2021 - Elsevier BV | Food Chemistry X
Yuxi Zhang, Xinyu Feng, Haiyu Lin, Xue Chen, Puming He, Yuefei Wang, Qiang Chu,
... shown that a typical kind of oolong tea, Tieguanyin, has multiple health benefits, while there is no ... we aimed to explore the alleviation effects of Tieguanyin water (TWE) and ethanol (TES) extracts on IBD. ...
Tópico(s): Ginseng Biological Effects and Applications
2022 - Royal Society of Chemistry | Food & Function
Zixin Ni, Qingyang Wu, Ziwei Zhou, Yun Yang, Qingcai Hu, Huili Deng, Yucheng Zheng, Wanjun Bi, Zhenzhang Liu, Yun Sun,
... acids, their derived volatiles, and related genes of Tieguanyin oolong tea using biochemical and molecular biology methods. ... levels of eight Camelia sinensis LOX family genes. Tieguanyin had relatively rich pleasant volatile compounds with moderate ...
Tópico(s): Fermentation and Sensory Analysis
2022 - PeerJ, Inc. | PeerJ
Hui Tan, Li Yan Chan, Adabelle Ong, Yong‐Quan Xu, Xuebo Zhang, Weibiao Zhou,
... technique, was used to differentiate spring and autumn Tieguanyin teas. Two configurations were used to obtain their ... rapid fingerprinting tool for differentiating spring and autumn Tieguanyin.
Tópico(s): Tea Polyphenols and Effects
2022 - Elsevier BV | Food Chemistry
Qing-Qing Cao, Jieqiong Wang, Mantang Chen, Fang Wang, Ying Gao, Daniel Granato, Xuebo Zhang, Jun‐Feng Yin, Yong‐Quan Xu,
Tieguanyin is one of the most consumed oolong teas because of its distinctive flavor. The brewing process ... sensory traits, chemical composition, and antioxidant activity of Tieguanyin tea infusion were investigated using quadratic orthogonal regression ...
Tópico(s): Sensory Analysis and Statistical Methods
2022 - Nature Portfolio | npj Science of Food