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Luo J, Cao WG, Yu B, Chen H, Wu YQ, Li YH, Pu XY, Zhong X, Zhang D. Quality evaluation of Hawk tea from different months and regions based on quantitative analysis of multiple components with a single marker (QAMS) combined with HPLC fingerprint. PHYTOCHEMICAL ANALYSIS : PCA 2023; 34:884-897. [PMID: 37483160 DOI: 10.1002/pca.3261] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/28/2022] [Revised: 02/18/2023] [Accepted: 03/06/2023] [Indexed: 07/25/2023]
Abstract
BACKGROUND Hawk tea, a medicinal and edible plant, has been consumed for thousands of years in Southwest China. To date, no unified food safety standard for Hawk tea has been established, and systematic research on the quality of Hawk tea is lacking. OBJECTIVE The aim of this study was to develop a comprehensive evaluation method for the quality of Hawk tea based on inclusions content, high-performance liquid chromatography (HPLC) fingerprinting combined with the quantitative analysis of multiple components with a single marker (QAMS) method. METHODS The contents of total flavonoids, total phenols, total polysaccharides, and total protein were determined using the colorimetric method. An effective comprehensive evaluation method was established to classify the 16 batches of samples based on HPLC fingerprint analysis combined with similarity analysis (SA), hierarchical cluster analysis (HCA), principal component analysis (PCA), partial least-squares discrimination analysis (PLS-DA), and the QAMS method. RESULTS Flavonoids were the main chemical components of Hawk tea. The accuracy of the QAMS method was verified by comparing the calculated results with those of the external standard method (ESM). No significant differences were found between the two methods. Additionally, the fingerprint of Hawk tea was also established. CONCLUSION The method established in this study can be used for the comprehensive quality evaluation of Hawk tea and can also provide a reference for the quality evaluation of other herbal medicines.
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Affiliation(s)
- Juan Luo
- College of Traditional Chinese Medicine, Chongqing Medical University, Chongqing, China
| | - Wei-Guo Cao
- College of Traditional Chinese Medicine, Chongqing Medical University, Chongqing, China
- The Lab of Traditional Chinese Medicine, Chongqing Medical University, Chongqing, China
| | - Bao Yu
- College of Traditional Chinese Medicine, Chongqing Medical University, Chongqing, China
| | - Huan Chen
- College of Traditional Chinese Medicine, Chongqing Medical University, Chongqing, China
| | - Ying-Qin Wu
- College of Traditional Chinese Medicine, Chongqing Medical University, Chongqing, China
| | - Yang-Hong Li
- College of Traditional Chinese Medicine, Chongqing Medical University, Chongqing, China
| | - Xi-Yu Pu
- College of Traditional Chinese Medicine, Chongqing Medical University, Chongqing, China
| | - Xue Zhong
- College of Traditional Chinese Medicine, Chongqing Medical University, Chongqing, China
| | - Dan Zhang
- College of Traditional Chinese Medicine, Chongqing Medical University, Chongqing, China
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Zhang X, Huang H, Sun S, Li D, Sun L, Li Q, Chen R, Lai X, Zhang Z, Zheng X, Wong WL, Wen S. Induction of Apoptosis via Inactivating PI3K/AKT Pathway in Colorectal Cancer Cells Using Aged Chinese Hakka Stir-Fried Green Tea Extract. Molecules 2022; 27:molecules27238272. [PMID: 36500365 PMCID: PMC9737789 DOI: 10.3390/molecules27238272] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2022] [Revised: 11/21/2022] [Accepted: 11/22/2022] [Indexed: 11/29/2022] Open
Abstract
Food extract supplements, with high functional activity and low side effects, play a recognized role in the adjunctive therapy of human colorectal cancer. The present study reported a new functional beverage, which is a type of Chinese Hakka stir-fried green tea (HSGT) aged for several years. The extracts of the lyophilized powder of five HSGT samples with different aging periods were analyzed with high-performance liquid chromatography. The major components of the extract were found to include polyphenols, catechins, amino acids, catechins, gallic acid and caffeine. The tea extracts were also investigated for their therapeutic activity against human colorectal cancer cells, HT-29, an epithelial cell isolated from the primary tumor. The effect of different aging time of the tea on the anticancer potency was compared. Our results showed that, at the cellular level, all the extracts of the aged teas significantly inhibited the proliferation of HT-29 in a concentration-dependent manner. In particular, two samples prepared in 2015 (15Y, aged for 6 years) and 2019 (19Y, aged for 2 years) exhibited the highest inhibition rate for 48 h treatment (cell viability was 50% at 0.2 mg/mL). Further, all the aged tea extracts examined were able to enhance the apoptosis of HT-29 cells (apoptosis rate > 25%) and block the transition of G1/S phase (cell-cycle distribution (CSD) from <20% to >30%) population to G2/M phase (CSD from nearly 30% to nearly 10%) at 0.2 mg/mL for 24 h or 48 h. Western blotting results also showed that the tea extracts inhibited cyclin-dependent kinases 2/4 (CDK2, CDK4) and CylinB1 protein expression, as well as increased poly ADP-ribose polymerase (PRAP) expression and Bcl2-associated X (Bax)/B-cell lymphoma-2 (Bcl2) ratio. In addition, an upstream signal of one of the above proteins, phosphatidylinositol 3-kinase (PI3K)/protein kinase B (AKT) signalling, was found to be involved in the regulation, as evidenced by the inhibition of phosphorylated PI3K and AKT by the extracts of the aged tea. Therefore, our study reveals that traditional Chinese aged tea (HSGT) may inhibit colon cancer cell proliferation, cell-cycle progression and promoted apoptosis of colon cancer cells by inactivating PI3K/AKT signalling.
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Affiliation(s)
- Xinyue Zhang
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, China
- Tea Research Institute, Guangdong Key Laboratory of Tea Resources Innovation & Utilization/Guangdong Academy of Agricultural Sciences, Guangzhou 510640, China
| | - Haiying Huang
- Tea Research Institute, Meizhou Academy of Agriculture and Forestry Sciences, Meizhou 514071, China
| | - Shili Sun
- Tea Research Institute, Guangdong Key Laboratory of Tea Resources Innovation & Utilization/Guangdong Academy of Agricultural Sciences, Guangzhou 510640, China
| | - Dongli Li
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, China
- International Healthcare Innovation Institute (Jiangmen), Jiangmen 529040, China
| | - Lingli Sun
- Tea Research Institute, Guangdong Key Laboratory of Tea Resources Innovation & Utilization/Guangdong Academy of Agricultural Sciences, Guangzhou 510640, China
| | - Qiuhua Li
- Tea Research Institute, Guangdong Key Laboratory of Tea Resources Innovation & Utilization/Guangdong Academy of Agricultural Sciences, Guangzhou 510640, China
| | - Ruohong Chen
- Tea Research Institute, Guangdong Key Laboratory of Tea Resources Innovation & Utilization/Guangdong Academy of Agricultural Sciences, Guangzhou 510640, China
| | - Xingfei Lai
- Tea Research Institute, Guangdong Key Laboratory of Tea Resources Innovation & Utilization/Guangdong Academy of Agricultural Sciences, Guangzhou 510640, China
| | - Zhenbiao Zhang
- Tea Research Institute, Guangdong Key Laboratory of Tea Resources Innovation & Utilization/Guangdong Academy of Agricultural Sciences, Guangzhou 510640, China
| | - Xi Zheng
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, China
- International Healthcare Innovation Institute (Jiangmen), Jiangmen 529040, China
| | - Wing-Leung Wong
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, China
- International Healthcare Innovation Institute (Jiangmen), Jiangmen 529040, China
- Correspondence: (W.-L.W.); (S.W.)
| | - Shuai Wen
- Tea Research Institute, Guangdong Key Laboratory of Tea Resources Innovation & Utilization/Guangdong Academy of Agricultural Sciences, Guangzhou 510640, China
- Correspondence: (W.-L.W.); (S.W.)
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