1
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Cui J, Wu B, Zhou J. Changes in amino acids, catechins and alkaloids during the storage of oolong tea and their relationship with antibacterial effect. Sci Rep 2024; 14:10424. [PMID: 38710752 DOI: 10.1038/s41598-024-60951-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2024] [Accepted: 04/29/2024] [Indexed: 05/08/2024] Open
Abstract
The storage process has a significant impact on tea quality. Few is known about effect of storage on quality of oolong tea. This study aimed to assess the effect of different storage times on the key chemical components of oolong tea by measuring changes in catechin, free amino acid, and alkaloid content. Variation in the main substances was determined by principal component analysis and heat map analysis. The results revealed notable effects of the storage process on the levels of theanine, epigallocatechin gallate (EGCG), and glutamine. These findings suggest that these compounds could serve as indicators for monitoring changes in oolong tea quality during storage. Additionally, the study observed an increase in the antibacterial ability of tea over time. Correlation analysis indicated that the antibacterial ability against Micrococcus tetragenus and Escherichia coli was influenced by metabolites such as aspartic acid, threonine, serine, gamma-aminobutyric acid, ornithine, alanine, arginine, and EGCG. Overall, this study presents an approach for identifying key metabolites to monitor tea quality effectively with relatively limited data.
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Affiliation(s)
- Jilai Cui
- College of Life Science, Xinyang Normal University, 237 Nanhu R., Xinyang, 464000, Henan, People's Republic of China.
- State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, 130 Changjiang Ave W., Hefei, 230036, Anhui, People's Republic of China.
| | - Bin Wu
- State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, 130 Changjiang Ave W., Hefei, 230036, Anhui, People's Republic of China
| | - Jie Zhou
- College of Life Science, Xinyang Normal University, 237 Nanhu R., Xinyang, 464000, Henan, People's Republic of China
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2
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Huang TQ, Chen YX, Zeng SL, Lin Y, Li F, Jiang ZM, Liu EH. Bergenin Alleviates Ulcerative Colitis By Decreasing Gut Commensal Bacteroides vulgatus-Mediated Elevated Branched-Chain Amino Acids. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2024; 72:3606-3621. [PMID: 38324392 DOI: 10.1021/acs.jafc.3c09448] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/09/2024]
Abstract
Ulcerative colitis is closely associated with the dysregulation of gut microbiota. There is growing evidence that natural products may improve ulcerative colitis by regulating the gut microbiota. In this research, we demonstrated that bergenin, a naturally occurring isocoumarin, significantly ameliorates colitis symptoms in dextran sulfate sodium (DSS)-induced mice. Transcriptomic analysis and Caco-2 cell assays revealed that bergenin could ameliorate ulcerative colitis by inhibiting TLR4 and regulating NF-κB and mTOR phosphorylation. 16S rRNA sequencing and metabolomics analyses revealed that bergenin could improve gut microbiota dysbiosis by decreasing branched-chain amino acid (BCAA) levels. BCAA intervention mediated the mTOR/p70S6K signaling pathway to exacerbate the symptoms of ulcerative colitis in mice. Notably, bergenin greatly decreased the symbiotic bacteria Bacteroides vulgatus (B. vulgatus), and the gavage of B. vulgatus increased BCAA concentrations and aggravated the symptoms of ulcerative colitis in mice. Our findings suggest that gut microbiota-mediated BCAA metabolism plays a vital role in the protective effect of bergenin on ulcerative colitis, providing novel insights for ulcerative colitis prevention through manipulation of the gut microbiota.
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Affiliation(s)
- Tian-Qing Huang
- State Key Laboratory of Natural Medicines, China Pharmaceutical University, No. 24 Tongjia Lane, Nanjing 210009, China
| | - Yu-Xin Chen
- State Key Laboratory of Natural Medicines, China Pharmaceutical University, No. 24 Tongjia Lane, Nanjing 210009, China
| | - Su-Ling Zeng
- Institute of Health and Medicine, Hefei Comprehensive National Science Center, Hefei 230601, China
| | - Yang Lin
- State Key Laboratory of Natural Medicines, China Pharmaceutical University, No. 24 Tongjia Lane, Nanjing 210009, China
| | - Fei Li
- State Key Laboratory of Natural Medicines, China Pharmaceutical University, No. 24 Tongjia Lane, Nanjing 210009, China
| | - Zheng-Meng Jiang
- State Key Laboratory of Natural Medicines, China Pharmaceutical University, No. 24 Tongjia Lane, Nanjing 210009, China
- College of Pharmacy, Nanjing University of Chinese Medicine, No. 138 Xianlin Road, Nanjing 210023, China
| | - E-Hu Liu
- State Key Laboratory of Natural Medicines, China Pharmaceutical University, No. 24 Tongjia Lane, Nanjing 210009, China
- College of Pharmacy, Nanjing University of Chinese Medicine, No. 138 Xianlin Road, Nanjing 210023, China
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3
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Hasan MR, Haque MM, Hoque MA, Sultana S, Rahman MM, Ali Shaikh MA, Sarker MKU. Antioxidant activity study and GC-MS profiling of Camellia sinensis Linn. Heliyon 2024; 10:e23514. [PMID: 38192794 PMCID: PMC10772584 DOI: 10.1016/j.heliyon.2023.e23514] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2023] [Revised: 12/05/2023] [Accepted: 12/05/2023] [Indexed: 01/10/2024] Open
Abstract
The antioxidant activity of tea leaves extract is a widely researched topic. Tea leaves, particularly those from the Camellia sinensis Linn plant, have garnered attention due to their potential health benefits attributed to their antioxidant properties. Antioxidants are compounds that can neutralize harmful free radicals in the body, which can damage cells and contribute to various health issues, including cancer, cardiovascular diseases, and aging. In this research, the matured tea leaves which has been considered as agricultural waste in Moulovibazar area of Bangladesh have been investigated as a potential source of antioxidant. Methanol was used as solvent for the extraction of antioxidant. DPPH (1,1-diphenyl-2-picryl hydrazyl) scavenging free radical assay method was used to assess the antioxidant activity of the extracts and ascorbic acid was used as positive control. Gas chromatography with mass spectrometric (GC-MS) analysis method was conducted on this extract to investigate the principal components. The half inhibitory concentration (IC50) values of methanol extract and ascorbic acid were found to be 69.51 μg/mL and 10.70 μg/mL, respectively. Caffeine is the main compound (74.47%) among the eight bioactive compounds was identify and quantified by GC-MS.
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Affiliation(s)
- Md. Rashed Hasan
- Fibre and Polymer Research Division, BCSIR Dhaka Laboratories, Bangladesh Council of Scientific and Industrial Research (BCSIR), Dhaka, Bangladesh
| | - Mohammad Majedul Haque
- Fibre and Polymer Research Division, BCSIR Dhaka Laboratories, Bangladesh Council of Scientific and Industrial Research (BCSIR), Dhaka, Bangladesh
| | - Md. Amirul Hoque
- Fibre and Polymer Research Division, BCSIR Dhaka Laboratories, Bangladesh Council of Scientific and Industrial Research (BCSIR), Dhaka, Bangladesh
| | - Shahin Sultana
- Fibre and Polymer Research Division, BCSIR Dhaka Laboratories, Bangladesh Council of Scientific and Industrial Research (BCSIR), Dhaka, Bangladesh
| | - Mohammad Mahbubur Rahman
- Fibre and Polymer Research Division, BCSIR Dhaka Laboratories, Bangladesh Council of Scientific and Industrial Research (BCSIR), Dhaka, Bangladesh
| | - Md. Aftab Ali Shaikh
- Fibre and Polymer Research Division, BCSIR Dhaka Laboratories, Bangladesh Council of Scientific and Industrial Research (BCSIR), Dhaka, Bangladesh
- Department of Chemistry, University of Dhaka, Dhaka, 1000, Bangladesh
| | - Md. Khabir Uddin Sarker
- Fibre and Polymer Research Division, BCSIR Dhaka Laboratories, Bangladesh Council of Scientific and Industrial Research (BCSIR), Dhaka, Bangladesh
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4
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Wu X, Xie Y, Tong K, Chang Q, Hu X, Fan C, Chen H. Simultaneous Screening and Quantification of 479 Pesticides in Green Tea by LC-QTOF-MS. Foods 2023; 12:4177. [PMID: 38002237 PMCID: PMC10670754 DOI: 10.3390/foods12224177] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2023] [Revised: 11/17/2023] [Accepted: 11/18/2023] [Indexed: 11/26/2023] Open
Abstract
A high-throughput screening and quantification method for 479 pesticides in green tea was established based on solid-phase extraction combined with liquid chromatography coupled with quadrupole time-of-flight mass spectrometry (LC-QTOF-MS). Pesticides were extracted from samples using an optimized SPE (TPT cartridges) procedure. LC-QTOF-MS in All Ions MS/MS scan mode acquired full MS data for quantification and product ion spectra for identification. LC-QTOF-MS quantification was achieved using matrix-matched standard calibration curves to achieve the optimal method accuracy. The method performance characteristics included the linearity, overall recovery, precision, and measurement uncertainty being evaluated. The validation results exhibited a good sensitivity with the LOQs of 5-55 µg/kg, which was satisfactory for their MRLs in China or the EU. The recoveries of more than 92.7% of the 479 pesticides in green tea were 70-120% at the three spiked levels with a precision of ≤20%. Finally, this method was employed to analyze 479 pesticides in 95 tea samples from markets in China. The test results of the tea samples showed that tolfenpyrad, buprofezin, and pyridaben were found with lower concentrations. The method has effectively improved the determination efficiency of pesticide residue screening by high-resolution mass spectrometry in green tea.
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Affiliation(s)
| | | | | | | | | | | | - Hui Chen
- Chinese Academy of Inspection and Quarantine, No. 11, Ronghua South Road, Beijing 100176, China; (X.W.); (Y.X.); (K.T.); (Q.C.); (X.H.); (C.F.)
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5
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Xiao L, Yang C, Zhang X, Wang Y, Li Z, Chen Y, Liu Z, Zhu M, Xiao Y. Effects of solid-state fermentation with Bacillus subtilis LK-1 on the volatile profile, catechins composition and antioxidant activity of dark teas. Food Chem X 2023; 19:100811. [PMID: 37780291 PMCID: PMC10534189 DOI: 10.1016/j.fochx.2023.100811] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2023] [Revised: 07/16/2023] [Accepted: 07/24/2023] [Indexed: 10/03/2023] Open
Abstract
In this study, the solid-state fermentation (SSF) of dark tea was carried out using Bacillus subtilis LK-1, which was isolated from Fu brick tea (FBT). The effects of SSF with B. subtilis on volatile organic compounds (VOCs), non-volatile metabolites, and antioxidant activities of dark tea was investigated. A total of 45 VOCs were identified, primarily consisting of ketones (18), hydrocarbons (8), aldehydes (7), and alcohols (6). Following fermentation, the content of key odor active substances such as linalool, β-ionone, and 3,5-octadiene-2-one significantly increased, resulting in an enhanced floral and fruity aroma of dark tea. Furthermore, new flavor substances like geranyl isovalerate and decanal were produced during SSF, enriching the aroma profile of dark tea. Non-ester catechins demonstrated a drastic increase, while ester catechins remarkably decreased after SSF. Furthermore, SSF led to a slight decrease in the total polyphenols content and antioxidant activity of dark tea. There is a close relationship between VOCs and the main non-volatile metabolites during SSF. Overall, this study highlighted the great impact of SSF with B. subtilis on the metabolites of dark tea and provided valuable insights into the role of bacteria in shaping the metabolite profile of FBT.
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Affiliation(s)
- Leike Xiao
- College of Food Science and Technology, Hunan Agricultural University, Changsha 410128, China
| | - Chenghongwang Yang
- College of Food Science and Technology, Hunan Agricultural University, Changsha 410128, China
| | - Xilu Zhang
- College of Food Science and Technology, Hunan Agricultural University, Changsha 410128, China
| | - Yuanliang Wang
- College of Food Science and Technology, Hunan Agricultural University, Changsha 410128, China
| | - Zongjun Li
- College of Food Science and Technology, Hunan Agricultural University, Changsha 410128, China
| | - Yulian Chen
- College of Animal Science and Technology, Hunan Agricultural University, Changsha 410128, China
| | - Zhonghua Liu
- Key Laboratory of Ministry of Education for Tea Science, College of Horticulture, Hunan Agricultural University, Changsha 410128, China
- National Research Center of Engineering Technology for Utilization of Botanical Functional Ingredients, Hunan Agricultural University, Changsha 410128, China
| | - Mingzhi Zhu
- Key Laboratory of Ministry of Education for Tea Science, College of Horticulture, Hunan Agricultural University, Changsha 410128, China
- National Research Center of Engineering Technology for Utilization of Botanical Functional Ingredients, Hunan Agricultural University, Changsha 410128, China
| | - Yu Xiao
- College of Food Science and Technology, Hunan Agricultural University, Changsha 410128, China
- Key Laboratory of Ministry of Education for Tea Science, College of Horticulture, Hunan Agricultural University, Changsha 410128, China
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Salim NS, Abdel-Alim M, Said HEM, Foda MF. Phenolic Profiles, Antihyperglycemic, Anti-Diabetic, and Antioxidant Properties of Egyptian Sonchus oleraceus Leaves Extract: An In Vivo Study. Molecules 2023; 28:6389. [PMID: 37687218 PMCID: PMC10489745 DOI: 10.3390/molecules28176389] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Revised: 08/15/2023] [Accepted: 08/15/2023] [Indexed: 09/10/2023] Open
Abstract
This study aimed to investigate the phenolic and antioxidant properties of Egyptian Sonchus oleraceus leaves extract (SOE) while comparing the antihyperglycemic efficacy of SOE with that of conventional medicines (glibenclamide) in vivo as a substitution for insulin-deficient patients. Total phenolic (TPC) and flavonoid contents (TFC) in SOE contributed around 127.66 ± 0.56 mg GAE/gm as gallic acid equivalent (GAE) and 74.80 ± 0.55 mg QE/gm as quercetin equivalent (QE). SOE also showed significant DPPH scavenging activity at 43.46%. The presence of five phenolic and six flavonoid compounds in SOE was discovered by HPLC analysis. For the in vivo assay, 42 rats were distributed into six groups (7 Wister albino rats each). The standard control group was fed a basal diet. While the 35 rats were induced with a single dose of 100 mg kg-1 body weight (b.w.) alloxan, then treated orally with glibenclamide (GLI) at 10 mg kg-1, 100, 200, and 300 mg kg-1 SOE (positive control group) for 56 days of routine gastric oral gavages and compared to the effects of GLI, the treatment of SOE 200 and 300 mg kg-1 in diabetic rats for two months dramatically decreased blood glucose, total lipid, total cholesterol, and low-density lipoprotein cholesterol (LDLC) while boosting high-density lipoprotein cholesterol (HDLC) levels and improving liver and kidney functions. The histological assay revealed that the SOE 300 mg kg-1 treatment significantly improved the pancreas tissues, implying the potential application of Egyptian SOE as a diabetes treatment.
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Affiliation(s)
- Nesrein S. Salim
- Department of Biochemistry, Faculty of Agriculture, Benha University, Moshtohor 13736, Egypt; (N.S.S.); (M.A.-A.)
| | - Mohamed Abdel-Alim
- Department of Biochemistry, Faculty of Agriculture, Benha University, Moshtohor 13736, Egypt; (N.S.S.); (M.A.-A.)
| | - Huda E. M. Said
- Clinical Pathology Department, Faculty of Medicine, Zagazig University, Zagazig 44519, Egypt;
| | - Mohamed F. Foda
- Department of Biochemistry, Faculty of Agriculture, Benha University, Moshtohor 13736, Egypt; (N.S.S.); (M.A.-A.)
- College of Life Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
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7
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Guo C, Shen W, Jin W, Jia X, Ji Z, Li J, Li B. Dynamic Formation of Green Tea Cream and the Identification of Key Components Using the "Knock-Out/Knock-In" Method. Foods 2023; 12:2987. [PMID: 37627986 PMCID: PMC10453089 DOI: 10.3390/foods12162987] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2023] [Revised: 07/30/2023] [Accepted: 08/07/2023] [Indexed: 08/27/2023] Open
Abstract
The composition of green tea cream is extremely complex, and identification of key components is a prerequisite for elucidating its microstructure formation mechanism. This study examined the dynamic changes in the content of components and properties of colloid particles during the formation process of tea cream by chemical analysis and dynamic laser scattering (DLS). A "knock-out/knock-in" method was developed and used to further explore the relationship between the interaction of these components and the microstructure formation of tea cream. The results revealed that polysaccharides, proteins, epigallocatechin gallate (EGCG), and caffeine were the main components involved in tea cream formation. These components participated in the formation process in the form of polysaccharide-protein and EGCG-caffeine colloidal particles. Consequently, there were synchronized dynamic changes in the levels of polysaccharides, proteins, EGCG, and caffeine. The "knock-out/knock-in" experiment revealed that the interactions between EGCG or caffeine and macro-molecule components were not the key factors in tea cream microstructure formation. However, it was found that the complexation between EGCG and caffeine played a crucial role in the formation of tea cream. The findings suggested that decreasing the concentrations of EGCG and caffeine could be useful in controlling tea cream formation during tea beverage processing and storage.
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Affiliation(s)
- Cheng Guo
- College of Food Science and Engineering, Wuhan Polytechnic University, Wuhan 430023, China; (C.G.); (W.S.); (W.J.); (X.J.); (Z.J.); (J.L.)
- Key Laboratory for Deep Processing of Major Grain and Oil, Ministry of Education, Wuhan Polytechnic University, Wuhan 430023, China
- Hubei Key Laboratory for Processing and Transformation of Agricultural Products, Wuhan Polytechnic University, Wuhan 430023, China
| | - Wangyang Shen
- College of Food Science and Engineering, Wuhan Polytechnic University, Wuhan 430023, China; (C.G.); (W.S.); (W.J.); (X.J.); (Z.J.); (J.L.)
- Key Laboratory for Deep Processing of Major Grain and Oil, Ministry of Education, Wuhan Polytechnic University, Wuhan 430023, China
- Hubei Key Laboratory for Processing and Transformation of Agricultural Products, Wuhan Polytechnic University, Wuhan 430023, China
| | - Weiping Jin
- College of Food Science and Engineering, Wuhan Polytechnic University, Wuhan 430023, China; (C.G.); (W.S.); (W.J.); (X.J.); (Z.J.); (J.L.)
- Key Laboratory for Deep Processing of Major Grain and Oil, Ministry of Education, Wuhan Polytechnic University, Wuhan 430023, China
- Hubei Key Laboratory for Processing and Transformation of Agricultural Products, Wuhan Polytechnic University, Wuhan 430023, China
| | - Xiwu Jia
- College of Food Science and Engineering, Wuhan Polytechnic University, Wuhan 430023, China; (C.G.); (W.S.); (W.J.); (X.J.); (Z.J.); (J.L.)
- Key Laboratory for Deep Processing of Major Grain and Oil, Ministry of Education, Wuhan Polytechnic University, Wuhan 430023, China
- Hubei Key Laboratory for Processing and Transformation of Agricultural Products, Wuhan Polytechnic University, Wuhan 430023, China
| | - Zhili Ji
- College of Food Science and Engineering, Wuhan Polytechnic University, Wuhan 430023, China; (C.G.); (W.S.); (W.J.); (X.J.); (Z.J.); (J.L.)
- Key Laboratory for Deep Processing of Major Grain and Oil, Ministry of Education, Wuhan Polytechnic University, Wuhan 430023, China
- Hubei Key Laboratory for Processing and Transformation of Agricultural Products, Wuhan Polytechnic University, Wuhan 430023, China
| | - Jinling Li
- College of Food Science and Engineering, Wuhan Polytechnic University, Wuhan 430023, China; (C.G.); (W.S.); (W.J.); (X.J.); (Z.J.); (J.L.)
- Key Laboratory for Deep Processing of Major Grain and Oil, Ministry of Education, Wuhan Polytechnic University, Wuhan 430023, China
- Hubei Key Laboratory for Processing and Transformation of Agricultural Products, Wuhan Polytechnic University, Wuhan 430023, China
| | - Bin Li
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
- Key Laboratory of Environment Correlative Dietology, Ministry of Education, Huazhong Agricultural University, Wuhan 430070, China
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Dimopoulou M, Vareltzis P, Floros S, Androutsos O, Bargiota A, Gortzi O. Development of a Functional Acceptable Diabetic and Plant-Based Snack Bar Using Mushroom ( Coprinus comatus) Powder. Foods 2023; 12:2702. [PMID: 37509794 PMCID: PMC10379996 DOI: 10.3390/foods12142702] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2023] [Revised: 07/06/2023] [Accepted: 07/11/2023] [Indexed: 07/30/2023] Open
Abstract
Consumers' growing concern about health and well-being has led to increased interest in functional foods. This research aims to evaluate the physicochemical and antioxidant properties of a functional plant-based (PB) snack bar enriched with Coprinus comatus powder. The snack bar formulations exhibited a wide range of flavor and textural characteristics. Two PB snack bars and four commercial bars were evaluated by a consumer panel of healthy volunteers (n = 20). The PB snack bar scored 'like extremely' on the 9-point hedonic scale. External preference mapping determined that sweetness, flavors, cohesiveness, gumminess, and adhesion had the greatest influence on consumer acceptability. Water content, ash, protein, fat, carbohydrate, reducing sugar, resistant starch, and dietary fiber were measured. Nutritional content was enhanced (omega 3, fiber and protein), and samples were shelf life stable (aw < 0.29; moisture content < 10%). In addition, the PB snack bar underwent simulated digestion according to the INFOGEST protocol, and from the comparative evaluation, the PB snack can be seen to control the post-prandial glycemic responses, as observed by the different degree of reducing sugars released via the matrix. The PB snack bar can be further functionally enhanced by the addition of their unique ingredients such as Coprinus comatus. Coprinus comatus powder is claimed to benefit glycemic control in diabetes and has attracted growing interest in terms of its potential use in natural products with possible health benefits.
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Affiliation(s)
- Maria Dimopoulou
- Department of Agriculture Crop Production and Rural Environment, School of Agricultural Sciences, University of Thessaly, 38446 Volos, Greece;
| | - Patroklos Vareltzis
- Laboratory of Food and Agricultural Industries Technologies, Chemical Engineering Department, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece; (P.V.); (S.F.)
| | - Stylianos Floros
- Laboratory of Food and Agricultural Industries Technologies, Chemical Engineering Department, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece; (P.V.); (S.F.)
| | - Odysseas Androutsos
- Lab of Clinical Nutrition and Dietetics (CND-Lab), Department of Nutrition & Dietetics, School of Physical Education, Sport Science and Dietetics, University of Thessaly, 42132 Trikala, Greece;
| | - Alexandra Bargiota
- Department of Endocrinology and Metabolic Diseases, Faculty of Medicine, School of Health Sciences, University Hospital of Larissa, University of Thessaly, 41334 Larissa, Greece
| | - Olga Gortzi
- Department of Agriculture Crop Production and Rural Environment, School of Agricultural Sciences, University of Thessaly, 38446 Volos, Greece;
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Messire G, Serreau R, Berteina-Raboin S. Antioxidant Effects of Catechins (EGCG), Andrographolide, and Curcuminoids Compounds for Skin Protection, Cosmetics, and Dermatological Uses: An Update. Antioxidants (Basel) 2023; 12:1317. [PMID: 37507856 PMCID: PMC10376544 DOI: 10.3390/antiox12071317] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2023] [Revised: 06/17/2023] [Accepted: 06/19/2023] [Indexed: 07/30/2023] Open
Abstract
Here we have chosen to highlight the main natural molecules extracted from Camellia sinensis, Andrographis paniculata, and Curcuma longa that may possess antioxidant activities of interest for skin protection. The molecules involved in the antioxidant process are, respectively, catechins derivatives, in particular, EGCG, andrographolide, and its derivatives, as well as various curcuminoids. These plants are generally used as beverages for Camellia sinensis (tea tree), as dietary supplements, or as spices. The molecules they contain are known for their diverse therapeutic activities, including anti-inflammatory, antimicrobial, anti-cancer, antidiabetic, and dermatological treatment. Their common antioxidant activities and therapeutic applications are widely documented, but their use in cosmetics is more recent. We will see that the use of pharmacomodulated derivatives, the addition of co-antioxidants, and the use of various formulations enable better skin penetration and greater ingredient stability. In this review, we will endeavor to compile the cosmetic uses of these natural molecules of interest and the various structural modulations reported with the aim of improving their bioavailability as well as establishing their different mechanisms of action.
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Affiliation(s)
- Gatien Messire
- Institut de Chimie Organique et Analytique ICOA, Université d'Orléans-Pôle de Chimie, UMR CNRS 7311, Rue de Chartres-BP 6759, 45067 Orléans CEDEX 02, France
| | - Raphaël Serreau
- Unité de Recherche PSYCOMADD, APHP Université Paris Saclay, Hôpital Paul-Brousse, 12 Avenue Paul Vaillant Couturier, 94804 Villejuif, France
- Addictologie EPSM Georges DAUMEZON, GHT Loiret, 1 Route de Chanteau, 45400 Fleury les Aubrais, France
| | - Sabine Berteina-Raboin
- Institut de Chimie Organique et Analytique ICOA, Université d'Orléans-Pôle de Chimie, UMR CNRS 7311, Rue de Chartres-BP 6759, 45067 Orléans CEDEX 02, France
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10
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Li F, Jing M, Ma F, Wang W, Li M. Comparison and Risk Assessment of Macroelements and Trace Metals in Commercial Teas from Different Regions of China. Biol Trace Elem Res 2023; 201:1503-1519. [PMID: 35467266 DOI: 10.1007/s12011-022-03232-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/19/2022] [Accepted: 04/04/2022] [Indexed: 02/07/2023]
Abstract
Tea (Camellia sinensis L.) is one of the most widely consumed non-alcoholic beverages worldwide. In the present study, 73 commercial tea samples were collected from tea plantations in the Southwest, South, Jiangnan, and Jiangbei regions of China. The contents of four macroelements (phosphorus (P), potassium (K), calcium (Ca) and magnesium (Mg)) and 15 trace metals (arsenic (As), cadmium (Cd), chromium (Cr), mercury (Hg), lead (Pb), zinc (Zn), aluminium (Al), copper (Cu), manganese (Mn), iron (Fe), nickel (Ni), thorium (Th), thallium (Tl), rubidium (Rb) and barium (Ba)) in tea samples were determined. The mean concentrations of As, Cd, Cr, Hg, Pb, Zn, Al, Cu, Mn, Fe, Ni, Th, Tl, Rb and Ba were in the range of 0.02-0.61, 0.008-0.126, 0.09-1.12, 0.001-0.012, 0.07-1.62, 19.5-73.2, 170-2100, 5.9-43.3, 228-2040, 60-337, 2.09-17.95, 0.002-0.08, 0.004-0.409, 0-150.50 and 3.1-41.2 µg/g, respectively, which were all lower than the maximum permissible limits stipulated by China (NY/T 288-2012, NY 659-2003). The target hazard quotients of each heavy metal were lower than one, and the combined risk hazard index of all heavy metals for adults was in the range of 0.10-0.85; therefore, there was no significant carcinogenic health risks to tea drinking consumers under the current dietary intake. Significant differences were found in the content of trace elements (Zn, Cu, Fe, Ni, Th, Tl, Rb and Ba) (p < 0.05); however, no significant differences were found in the content of macroelements (P, K, Ca and Mg) and trace metals (As, Cd, Cr, Hg, Pb, Al and Mn) in teas from different regions. Therefore, the region did not affect the heavy metal exposure risk. Correlation coefficient and principal component analyses were performed to determine the source of the elements. Three principal factors were obtained: factor 1 was positively related to Ca, Mg, As, Cd, Cr, Hg, Pb, Al, Mn, Fe and Th (32.63%); factor 2 to P, Zn, Cu and Ni (18.64%) and factor 3 to K and Rb (10.10%). Thus, the elements in the same factor might originate from the same source. This study provides an essential basis to understand the variance and potential risks of different elements in tea from different regions of China.
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Affiliation(s)
- Fen Li
- College of Tea (Pu'er), West Yunnan University of Applied Sciences, Pu'er 665000, China
| | - Min Jing
- The Key Laboratory of Environmental Pollution Monitoring and Disease Control, School of Public Health, Ministry of Education, Guizhou Medical University, Guiyang, 550025, China
| | - Fujie Ma
- College of Tea (Pu'er), West Yunnan University of Applied Sciences, Pu'er 665000, China
| | - Wei Wang
- College of Tea (Pu'er), West Yunnan University of Applied Sciences, Pu'er 665000, China
| | - Mei Li
- College of Tea (Pu'er), West Yunnan University of Applied Sciences, Pu'er 665000, China.
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11
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Ousji O, Sleno L. Structural Elucidation of Novel Stable and Reactive Metabolites of Green Tea Catechins and Alkyl Gallates by LC-MS/MS. Antioxidants (Basel) 2022; 11:antiox11091635. [PMID: 36139709 PMCID: PMC9495999 DOI: 10.3390/antiox11091635] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2022] [Revised: 08/16/2022] [Accepted: 08/18/2022] [Indexed: 12/20/2022] Open
Abstract
Synthetic gallic acid derivatives are employed as additives in food, personal care products, and pharmaceutical formulations. Despite their widespread use, little is known about their human exposure, health effects, and metabolism. Green tea catechins are natural antioxidants, known for their health-promoting properties, and are also employed as food additives or in personal care products. The objective of this study was to establish metabolic pathways involved in the biotransformation of green tea catechins and synthetic gallate esters. Liquid chromatography coupled with high-resolution tandem mass spectrometry (LC-HRMS/MS) was used to elucidate oxidative and methylated metabolites, in addition to glutathione conjugates, formed in vitro using human liver microsomal incubations. The developed method was applied to 14 different parent compounds with a wide range of polarities, for the structural elucidation of many known and novel metabolites. These results serve to inform about the wide variety of possible metabolites formed upon exposure to these compounds.
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12
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Zuhra K, Petrosino M, Gupta B, Panagaki T, Cecconi M, Myrianthopoulos V, Schneiter R, Mikros E, Majtan T, Szabo C. Epigallocatechin gallate is a potent inhibitor of cystathionine beta-synthase: Structure-activity relationship and mechanism of action. Nitric Oxide 2022; 128:12-24. [PMID: 35973674 DOI: 10.1016/j.niox.2022.07.007] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2022] [Revised: 07/22/2022] [Accepted: 07/28/2022] [Indexed: 10/31/2022]
Abstract
Epigallocatechin gallate (EGCG) is the main bioactive component of green tea. Through screening of a small library of natural compounds, we discovered that EGCG inhibits cystathionine β-synthase (CBS), a major H2S-generating enzyme. Here we characterize EGCG's mechanism of action in the context of CBS-derived H2S production. In the current project, biochemical, pharmacological and cell biology approaches were used to characterize the effect of EGCG on CBS in cellular models of cancer and Down syndrome (DS). The results show that EGCG binds to CBS and inhibits H2S-producing CBS activity almost 30-times more efficiently than the canonical cystathionine formation (IC50 0.12 versus 3.3 μM). Through screening structural analogs and building blocks, we identified that gallate moiety of EGCG represents the pharmacophore responsible for CBS inhibition. EGCG is a mixed-mode, CBS-specific inhibitor with no effect on the other two major enzymatic sources of H2S, CSE and 3-MST. Unlike the prototypical CBS inhibitor aminooxyacetate, EGCG does not bind the catalytic cofactor of CBS pyridoxal-5'-phosphate. Molecular modeling suggests that EGCG blocks a substrate access channel to pyridoxal-5'-phosphate. EGCG inhibits cellular H2S production in HCT-116 colon cancer cells and in DS fibroblasts. It also exerts effects that are consistent with the functional role of CBS in these cells: in HCT-116 cells it decreases, while in DS cells it improves viability and proliferation. In conclusion, EGCG is a potent inhibitor of CBS-derived H2S production. This effect may contribute to its pharmacological effects in various pathophysiological conditions.
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Affiliation(s)
- Karim Zuhra
- Chair of Pharmacology, University of Fribourg, Faculty of Science and Medicine, Chemin du Musee 18, Fribourg, 1700, Switzerland
| | - Maria Petrosino
- Chair of Pharmacology, University of Fribourg, Faculty of Science and Medicine, Chemin du Musee 18, Fribourg, 1700, Switzerland
| | - Barkha Gupta
- Department of Biology, University of Fribourg, Faculty of Science and Medicine, Chemin du Musee 10, Fribourg, 1700, Switzerland
| | - Theodora Panagaki
- Chair of Pharmacology, University of Fribourg, Faculty of Science and Medicine, Chemin du Musee 18, Fribourg, 1700, Switzerland
| | - Marco Cecconi
- Chair of Pharmacology, University of Fribourg, Faculty of Science and Medicine, Chemin du Musee 18, Fribourg, 1700, Switzerland
| | - Vassilios Myrianthopoulos
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, University of Athens, Athens, 15772, Greece
| | - Roger Schneiter
- Department of Biology, University of Fribourg, Faculty of Science and Medicine, Chemin du Musee 10, Fribourg, 1700, Switzerland
| | - Emmanuel Mikros
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, University of Athens, Athens, 15772, Greece
| | - Tomas Majtan
- Chair of Pharmacology, University of Fribourg, Faculty of Science and Medicine, Chemin du Musee 18, Fribourg, 1700, Switzerland.
| | - Csaba Szabo
- Chair of Pharmacology, University of Fribourg, Faculty of Science and Medicine, Chemin du Musee 18, Fribourg, 1700, Switzerland.
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13
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Ebrahimi Monfared K, Gharachorloo M, Jafarpour A, Varvani J. Effect of storage and packaging conditions on physicochemical and bioactivity of matcha‐enriched muesli containing probiotic bacteria. J FOOD PROCESS PRES 2022. [DOI: 10.1111/jfpp.16878] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Affiliation(s)
- Kiamehr Ebrahimi Monfared
- Ph D Student of the Department of Food Science and Technology, Science and Research Branch Islamic Azad University Tehran Iran
| | - Maryam Gharachorloo
- Associate Professor of the Department of Food Science and Technology, Science and Research Branch Islamic Azad University Tehran Iran
| | - Afshin Jafarpour
- Assistant Professor of the Department of Food Science and Technology, Garmsar Branch Islamic Azad University Garmsar Iran
| | - Javad Varvani
- Associate Professor of the Department of Environment, Arak Branch Islamic Azad University Arak Iran
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14
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Tea (Camellia sinensis): A Review of Nutritional Composition, Potential Applications, and Omics Research. APPLIED SCIENCES-BASEL 2022. [DOI: 10.3390/app12125874] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Tea (Camelliasinensis) is the world’s most widely consumed non-alcoholic beverage with essential economic and health benefits since it is an excellent source of polyphenols, catechins, amino acids, flavonoids, carotenoids, vitamins, and polysaccharides. The aim of this review is to summarize the main secondary metabolites in tea plants, and the content and distribution of these compounds in six different types of tea and different organs of tea plant were further investigated. The application of these secondary metabolites on food processing, cosmetics industry, and pharmaceutical industry was reviewed in this study. With the rapid advancements in biotechnology and sequencing technology, omics analyses, including genome, transcriptome, and metabolome, were widely used to detect the main secondary metabolites and their molecular regulatory mechanisms in tea plants. Numerous functional genes and regulatory factors have been discovered, studied, and applied to improve tea plants. Research advances, including secondary metabolites, applications, omics research, and functional gene mining, are comprehensively reviewed here. Further exploration and application trends are briefly described. This review provides a reference for basic and applied research on tea plants.
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15
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Chen Y, Chen J, Chen R, Xiao L, Wu X, Hu L, Li Z, Wang Y, Zhu M, Liu Z, Xiao Y. Comparison of the Fungal Community, Chemical Composition, Antioxidant Activity, and Taste Characteristics of Fu Brick Tea in Different Regions of China. Front Nutr 2022; 9:900138. [PMID: 35656159 PMCID: PMC9152283 DOI: 10.3389/fnut.2022.900138] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2022] [Accepted: 04/26/2022] [Indexed: 12/12/2022] Open
Abstract
In this study, the fungal community structure, metabolites, antioxidant ability, and taste characteristics of five Fu brick tea (FBT) from different regions of China were determined and compared. A total of 69 operational taxonomic units (OTUs) were identified and assigned into 5 phyla and 27 genera, with Eurotium as the predominant genus in all samples. Hunan (HN) sample had the strongest fungal diversity and richness, followed by Guangxi (GX) sample, and Zhejiang (ZJ) sample had the lowest. GX sample had higher amounts of gallic acid (GA), total catechins, gallocatechin (GC), and epicatechin gallate (ECG) as well as antioxidant activity than the other samples. The levels of total phenolics, total flavonoids, epigallocatechin (EGC), catechin, epicatechin (EC), thearubigins (TRs), and theaflavins (TFs) were the highest in the ZJ sample. Guizhou (GZ) and Shaanxi (SX) samples contained the highest contents of epigallocatechin gallate (EGCG) and gallocatechin gallate (GCG), respectively. Total phenolics, GA, EC, CG, and TFs were positively associated with most of fungal genera. Total phenolic content (TPC), total flavonoid content (TFC), and most of catechins contributed to the antioxidant activities of FBT. HN sample had the strongest sourness and sweetness, ZJ sample had the strongest saltiness, SX sample had the strongest umami, and GZ sample had the strongest astringency, which was ascribed to the varied metabolites. This work reveals that FBT in different regions vary greatly in fungal community, metabolites, antioxidant activity, and taste characteristics, and provides new insight into the quality characteristics formation of FBT in different regions.
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Affiliation(s)
- Yulian Chen
- College of Food Science and Technology, Hunan Agricultural University, Changsha, China
- College of Animal Science and Technology, Hunan Agricultural University, Changsha, China
| | - Jiaxu Chen
- College of Food Science and Technology, Hunan Agricultural University, Changsha, China
- Longping Branch Graduate School, Hunan University, Changsha, China
| | - Ruyang Chen
- College of Food Science and Technology, Hunan Agricultural University, Changsha, China
| | - Leike Xiao
- College of Food Science and Technology, Hunan Agricultural University, Changsha, China
| | - Xing Wu
- College of Food Science and Technology, Hunan Agricultural University, Changsha, China
| | - Lin Hu
- College of Food Science and Technology, Hunan Agricultural University, Changsha, China
| | - Zongjun Li
- College of Food Science and Technology, Hunan Agricultural University, Changsha, China
| | - Yuanliang Wang
- College of Food Science and Technology, Hunan Agricultural University, Changsha, China
| | - Mingzhi Zhu
- Key Laboratory of Ministry of Education for Tea Science, College of Horticulture, Hunan Agricultural University, Changsha, China
- National Research Center of Engineering Technology for Utilization of Botanical Functional Ingredients, Hunan Agricultural University, Changsha, China
- *Correspondence: Mingzhi Zhu,
| | - Zhonghua Liu
- Key Laboratory of Ministry of Education for Tea Science, College of Horticulture, Hunan Agricultural University, Changsha, China
- National Research Center of Engineering Technology for Utilization of Botanical Functional Ingredients, Hunan Agricultural University, Changsha, China
| | - Yu Xiao
- College of Food Science and Technology, Hunan Agricultural University, Changsha, China
- Key Laboratory of Ministry of Education for Tea Science, College of Horticulture, Hunan Agricultural University, Changsha, China
- Yu Xiao, ,
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16
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ZHANG J, MA Y, WANG Z, LI Y, WANG H, WANG Q. Association between Green Tea Consumption and In-Stent Restenosis in a Chinese Population after Percutaneous Coronary Intervention. J Nutr Sci Vitaminol (Tokyo) 2022; 68:120-126. [DOI: 10.3177/jnsv.68.120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- Jing ZHANG
- Department of Ultrasound, Zhongda Hospital, Southeast University
| | - Yao MA
- Department of Cardiology, The First Affiliated Hospital of Nanjing Medical University
| | - Zemu WANG
- Department of Cardiology, The First Affiliated Hospital of Nanjing Medical University
| | - Yafei LI
- Department of Cardiology, The First Affiliated Hospital of Nanjing Medical University
| | - Hao WANG
- Department of Cardiology, The First Affiliated Hospital of Nanjing Medical University
| | - Qiming WANG
- Department of Cardiology, The First Affiliated Hospital of Nanjing Medical University
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17
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Santana LF, Sasso S, Aquino DFS, de Cássia Freitas K, de Cássia Avellaneda Guimarães R, Pott A, do Nascimento VA, Bogo D, de Oliveira Figueiredo P, Hiane PA. Nutraceutic Potential of Bioactive Compounds of Eugenia dysenterica DC in Metabolic Alterations. Molecules 2022; 27:molecules27082477. [PMID: 35458674 PMCID: PMC9024852 DOI: 10.3390/molecules27082477] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2021] [Revised: 02/25/2022] [Accepted: 02/25/2022] [Indexed: 12/04/2022] Open
Abstract
The fruit and leaves of Eugenia dysenterica DC., locally known as cagaita, are rich in antioxidant glycosylated quercetin derivatives and phenolic compounds that have beneficial effects on diabetes mellitus, hypertension and general inflammation. We conducted a literature search to investigate the nutraceutical potentials of these phenolic compounds for treating obesity, diabetes mellitus and intestinal inflammatory disease. The phenolic compounds in E. dysenterica have demonstrated effects on carbohydrate metabolism, which can prevent the development of these chronic diseases and reduce LDL (low-density lipoprotein) cholesterol and hypertension. E. dysenterica also improves intestinal motility and microbiota and protects gastric mucosa, thereby preventing inflammation. However, studies are necessary to identify the mechanism by which E. dysenterica nutraceutical compounds act on such pathological processes to support future research.
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Affiliation(s)
- Lidiani Figueiredo Santana
- Graduate Program in Health and Development in the Central-West Region of Brazil, Federal University of Mato Grosso do Sul—UFMS, Campo Grande 79070-900, Brazil; (L.F.S.); (S.S.); (R.d.C.A.G.); (V.A.d.N.); (D.B.); (P.A.H.)
| | - Sandramara Sasso
- Graduate Program in Health and Development in the Central-West Region of Brazil, Federal University of Mato Grosso do Sul—UFMS, Campo Grande 79070-900, Brazil; (L.F.S.); (S.S.); (R.d.C.A.G.); (V.A.d.N.); (D.B.); (P.A.H.)
| | - Diana Figueiredo Santana Aquino
- Higher Level Technician, Personnel Development Division, State University of Mato Grosso do Sul—UEMS, Dourados 79804-970, Brazil;
| | - Karine de Cássia Freitas
- Graduate Program in Health and Development in the Central-West Region of Brazil, Federal University of Mato Grosso do Sul—UFMS, Campo Grande 79070-900, Brazil; (L.F.S.); (S.S.); (R.d.C.A.G.); (V.A.d.N.); (D.B.); (P.A.H.)
- Correspondence: ; Tel.: +55-67-3345-7410
| | - Rita de Cássia Avellaneda Guimarães
- Graduate Program in Health and Development in the Central-West Region of Brazil, Federal University of Mato Grosso do Sul—UFMS, Campo Grande 79070-900, Brazil; (L.F.S.); (S.S.); (R.d.C.A.G.); (V.A.d.N.); (D.B.); (P.A.H.)
| | - Arnildo Pott
- Institute of Biosciences, Federal University of Mato Grosso do Sul—UFMS, Campo Grande 79079-900, Brazil;
| | - Valter Aragão do Nascimento
- Graduate Program in Health and Development in the Central-West Region of Brazil, Federal University of Mato Grosso do Sul—UFMS, Campo Grande 79070-900, Brazil; (L.F.S.); (S.S.); (R.d.C.A.G.); (V.A.d.N.); (D.B.); (P.A.H.)
| | - Danielle Bogo
- Graduate Program in Health and Development in the Central-West Region of Brazil, Federal University of Mato Grosso do Sul—UFMS, Campo Grande 79070-900, Brazil; (L.F.S.); (S.S.); (R.d.C.A.G.); (V.A.d.N.); (D.B.); (P.A.H.)
| | - Patrícia de Oliveira Figueiredo
- Laboratory Pronabio (Bioactive Natural Products)-Chemistry Institute, Federal University of Mato Grosso do Sul—UFMS, Campo Grande 79074-460, Brazil;
| | - Priscila Aiko Hiane
- Graduate Program in Health and Development in the Central-West Region of Brazil, Federal University of Mato Grosso do Sul—UFMS, Campo Grande 79070-900, Brazil; (L.F.S.); (S.S.); (R.d.C.A.G.); (V.A.d.N.); (D.B.); (P.A.H.)
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18
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Allameh M, Orsat V. Herbal Anxiolytics: Sources and Their Preparation Methods. FOOD REVIEWS INTERNATIONAL 2022. [DOI: 10.1080/87559129.2022.2043895] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Mina Allameh
- Department of Bioresource Engineering, McGill University, Ste-Anne-de-Bellevue, Québec, Canada
| | - V. Orsat
- Department of Bioresource Engineering, McGill University, Ste-Anne-de-Bellevue, Québec, Canada
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19
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Absar N, Abedin J, Rahman MM, Miah MH, Siddique N, Kamal M, Chowdhury MI, Sulieman AAM, Faruque MRI, Khandaker MU, Bradley DA, Alsubaie A. Radionuclides Transfer from Soil to Tea Leaves and Estimation of Committed Effective Dose to the Bangladesh Populace. Life (Basel) 2021; 11:282. [PMID: 33801699 PMCID: PMC8066812 DOI: 10.3390/life11040282] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2021] [Revised: 03/23/2021] [Accepted: 03/24/2021] [Indexed: 11/16/2022] Open
Abstract
Considering the probable health risks due to radioactivity input via drinking tea, the concentrations of 226Ra, 232Th,40K and 137Cs radionuclides in the soil and the corresponding tea leaves of a large tea plantation were measured using high purity germanium (HPGe) γ-ray spectrometry. Different layers of soil and fresh tea leaf samples were collected from the Udalia Tea Estate (UTE) in the Fatickchari area of Chittagong, Bangladesh. The mean concentrations (in Bq/kg) of radionuclides in the studied soil samples were found to be 34 ± 9 to 45 ± 3 for 226Ra, 50 ± 13 to 63 ± 5 for 232Th, 245 ± 30 to 635 ± 35 for 40K and 3 ± 1 to 10 ± 1 for 137Cs, while the respective values in the corresponding tea leaf samples were 3.6 ± 0.7 to 5.7 ± 1.0, 2.4 ± 0.5 to 5.8 ± 0.9, 132 ± 25 to 258 ± 29 and <0.4. The mean transfer factors for 226Ra, 232Th and 40K from soil to tea leaves were calculated to be 0.12, 0.08 and 0.46, respectively, the complete range being 1.1 × 10-2 to 1.0, in accordance with IAEA values. Additionally, the most popularly consumed tea brands available in the Bangladeshi market were also analyzed and, with the exception of 40K, were found to have similar concentrations to the fresh tea leaves collected from the UTE. The committed effective dose via the consumption of tea was estimated to be low in comparison with the United Nations Scientific Committee on the Effects of Atomic Radiation (UNSCEAR) reference ingestion dose limit of 290 μSv/y. Current indicative tea consumption of 4 g/day/person shows an insignificant radiological risk to public health, while cumulative dietary exposures may not be entirely negligible, because the UNSCEAR reference dose limit is derived from total dietary exposures. This study suggests a periodic monitoring of radiation levels in tea leaves in seeking to ensure the safety of human health.
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Affiliation(s)
- Nurul Absar
- Department of Computer Science and Engineering, BGC Trust University Bangladesh, Chittagong 4381, Bangladesh; (N.A.); (J.A.)
| | - Jainal Abedin
- Department of Computer Science and Engineering, BGC Trust University Bangladesh, Chittagong 4381, Bangladesh; (N.A.); (J.A.)
| | - Md. Mashiur Rahman
- Hughes Network Systems, 11717 Exploration Lane, Germantown, MD 20876, USA;
| | - Moazzem Hossain Miah
- Department of Physics, University of Chittagong, Chittagong 4331, Bangladesh; (M.H.M.); (N.S.)
| | - Naziba Siddique
- Department of Physics, University of Chittagong, Chittagong 4331, Bangladesh; (M.H.M.); (N.S.)
| | - Masud Kamal
- Atomic Energy Centre-Chittagong, Radioactivity Testing and Monitoring Laboratory, Bangladesh Atomic Energy Commission, Chittagong 4209, Bangladesh; (M.K.); (M.I.C.)
| | - Mantazul Islam Chowdhury
- Atomic Energy Centre-Chittagong, Radioactivity Testing and Monitoring Laboratory, Bangladesh Atomic Energy Commission, Chittagong 4209, Bangladesh; (M.K.); (M.I.C.)
| | - Abdelmoneim Adam Mohamed Sulieman
- Department of Radiology and Medical Imaging, College of Applied Medical Sciences, Prince Sattam Bin Abdulaziz University, P.O. Box 422, Alkharj 11942, Saudi Arabia;
| | | | - Mayeen Uddin Khandaker
- Centre for Applied Physics and Radiation Technologies, School of Engineering and Technology, Sunway University, Bandar Sunway 47500, Malaysia;
| | - David Andrew Bradley
- Centre for Applied Physics and Radiation Technologies, School of Engineering and Technology, Sunway University, Bandar Sunway 47500, Malaysia;
- Centre for Nuclear and Radiation Physics, Department of Physics, University of Surrey, Guildford, Surrey GU2 7XH, UK
| | - Abdullah Alsubaie
- Department of Physics, College of Khurma, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia;
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20
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Zhang XH, Zhou CC, Li CY, Hua Y, Li K, Wei P, He MF. Isoliquiritin exert protective effect on telencephalon infarction injury by regulating multi-pathways in zebrafish model of ischemic stroke. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2021; 83:153469. [PMID: 33535128 DOI: 10.1016/j.phymed.2021.153469] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/13/2020] [Revised: 12/16/2020] [Accepted: 01/14/2021] [Indexed: 06/12/2023]
Abstract
BACKGROUND Ischemic stroke is a multifactorial disease contributing to mortality and neurological dysfunction. Isoliquiritin (ISL) has been reported to possess a series of pharmacological activities including antioxidant, anti-inflammatory, antifungal, anti-depression, anti-neurotoxicity and pro-angiogenesis activities but whether it can be used for ischemic stroke treatment remains unknown. PURPOSE The goal of this study is to explore its therapeutic effect on ischemic stroke and demonstrated the potential mechanism of ISL in zebrafish model. METHODS Using the photothrombotic-induced adult zebrafish model of ischemic stroke, we visualized the telencephalon (Tel) and optic tectum (OT) infarction injury at 24 h post-light exposure for 30 min by TTC and H&E staining. The effect of ISL on neurological deficits was analyzed during open tank swimming by video tracking. The antioxidant activity against ischemia injury was quantified by SOD, GSH-Px and MDA assay. Transcriptome analysis of zebrafish Tel revealed how ISL regulating gene expression to exert protective effect, which were also been validated by real-time quantitative PCR assays. RESULTS We found for the first time that the Tel tissue was the first damaged site of the whole brain and it showed more sensitivity to the brain ischemic damage compared to the OT. ISL reduced the rate of Tel injury, ameliorated neurological deficits as well as counteracted oxidative damages by increasing SOD, GSH-Px and decreasing MDA activity. GO enrichment demonstrated that ISL protected membrane and membrane function as well as initiate immune regulation in the stress response after ischemia. KEGG pathway analysis pointed out that immune-related pathways, apoptosis as well as necroptosis pathways were more involved in the protective mechanism of ISL. Furthermore, the log2 fold change in expression pattern of 25 genes detected by qRT-PCR was consistent with that by RNA-seq. CONCLUSIONS Tel was highly sensitive to the brain ischemia injury in zebrafish model of ischemic stroke. ISL significantly exerted protective effect on Tel injury, neurological deficits and oxidative damages. ISL could regulate a variety of genes related to immune, apoptosis and necrosis pathways against complex cascade reaction after ischemia. These findings enriched the study of ISL, making it a novel multi-target agent for ischemic stroke treatment.
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Affiliation(s)
- Xiao-Huan Zhang
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Chen-Cong Zhou
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Chong-Yong Li
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Yao Hua
- Jiangsu Simovay Pharmaceutical Co., Ltd, Nanjing 210042, China
| | - Kang Li
- Jiangsu Key Laboratory of Oral Disease, Nanjing Medical University, 140 Hanzhong Road, Nanjing 211816, China
| | - Ping Wei
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Ming-Fang He
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing 211816, China.
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Paschoalinotto BH, Dias MI, Pinela J, Pires TC, Alves MJ, Mocan A, Calhelha RC, Barros L, Ineu RP, Ferreira IC. Phytochemical Characterization and Evaluation of Bioactive Properties of Tisanes Prepared from Promising Medicinal and Aromatic Plants. Foods 2021; 10:foods10020475. [PMID: 33671660 PMCID: PMC7926303 DOI: 10.3390/foods10020475] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2021] [Revised: 02/19/2021] [Accepted: 02/19/2021] [Indexed: 11/16/2022] Open
Abstract
The chemical composition and biological properties correlation in several medicinal and aromatic plants is still underexplored, especially in its most common form of consumption as tisane. The present study aims to characterize the organic acids and vitamin E composition of five tisanes and their extracts by High-Performance Liquid Chromatography coupled to a diode-array detector (HPLC-DAD) and HPLC coupled to a fluorescence detector techniques, respectively, and the phenolic composition by HPLC-DAD-ESI/MS (mass spectrometry by electrospray ionization). It also focuses on their bioactive properties, namely antioxidant, antimicrobial, anti-inflammatory, cytotoxic, anti-tyrosinase, and anti-diabetic activities. A Principal Component Analysis (PCA) was performed in order to understand the correlation between the chemical composition and bioactive properties of the tisanes. The tisane 5 (T5) composed by lemon thyme, tutsan, cloves, and cinnamon, was the most promising mixture, presenting the lowest values for the lipid peroxidation inhibition, anti-inflammatory, and anti-diabetic activity. It also presented the highest concentration of phenolic acids (caffeoylquinic acids derivatives), and flavan-3-ols (catechin derivatives). Only the dry plants presented tocopherols. For the antihemolytic, antimicrobial, and cytotoxic activity, T2 and T4 (with lemon thyme) were highlighted as the best herbal mixtures. The PCA proved to be a valid tool to select the most promising tisane according to the bioactivity. These results suggest that the studied tisanes can be source of high added-value bioactive compounds with health-promoting effects and potential for application in the food and nutraceutical industries, among others.
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Affiliation(s)
- Beatriz H. Paschoalinotto
- Centro de Investigação de Montanha (CIMO), Instituto Politécnico de Bragança, Campus de Santa Apolónia, 5300-253 Bragança, Portugal; (B.H.P.); (J.P.); (T.C.S.P.P.); (M.J.A.); (R.C.C.); (I.C.F.R.F.)
- Universidade Tecnológica Federal do Paraná, Campus Campo Mourão (UTFPR-CM), Campo Mourão 87301-899, Brazil;
| | - Maria Inês Dias
- Centro de Investigação de Montanha (CIMO), Instituto Politécnico de Bragança, Campus de Santa Apolónia, 5300-253 Bragança, Portugal; (B.H.P.); (J.P.); (T.C.S.P.P.); (M.J.A.); (R.C.C.); (I.C.F.R.F.)
- Correspondence: (M.I.D.); (L.B.); Tel.: +351-273-330-903 (M.I.D.)
| | - José Pinela
- Centro de Investigação de Montanha (CIMO), Instituto Politécnico de Bragança, Campus de Santa Apolónia, 5300-253 Bragança, Portugal; (B.H.P.); (J.P.); (T.C.S.P.P.); (M.J.A.); (R.C.C.); (I.C.F.R.F.)
| | - Tânia C.S.P. Pires
- Centro de Investigação de Montanha (CIMO), Instituto Politécnico de Bragança, Campus de Santa Apolónia, 5300-253 Bragança, Portugal; (B.H.P.); (J.P.); (T.C.S.P.P.); (M.J.A.); (R.C.C.); (I.C.F.R.F.)
| | - Maria José Alves
- Centro de Investigação de Montanha (CIMO), Instituto Politécnico de Bragança, Campus de Santa Apolónia, 5300-253 Bragança, Portugal; (B.H.P.); (J.P.); (T.C.S.P.P.); (M.J.A.); (R.C.C.); (I.C.F.R.F.)
| | - Andrei Mocan
- Faculty of Pharmacy, “Iuliu Hațieganu” University of Medicine and Pharmacy, 8 Victor Babeș Street, 400012 Cluj-Napoca, Romania;
- Laboratory of Chromatography, Institute of Advanced Horticulture Research of Transylvania, University of Agricultural Sciences and Veterinary Medicine, 400372 Cluj-Napoca, Romania
| | - Ricardo C. Calhelha
- Centro de Investigação de Montanha (CIMO), Instituto Politécnico de Bragança, Campus de Santa Apolónia, 5300-253 Bragança, Portugal; (B.H.P.); (J.P.); (T.C.S.P.P.); (M.J.A.); (R.C.C.); (I.C.F.R.F.)
| | - Lillian Barros
- Centro de Investigação de Montanha (CIMO), Instituto Politécnico de Bragança, Campus de Santa Apolónia, 5300-253 Bragança, Portugal; (B.H.P.); (J.P.); (T.C.S.P.P.); (M.J.A.); (R.C.C.); (I.C.F.R.F.)
- Correspondence: (M.I.D.); (L.B.); Tel.: +351-273-330-903 (M.I.D.)
| | - Rafael P. Ineu
- Universidade Tecnológica Federal do Paraná, Campus Campo Mourão (UTFPR-CM), Campo Mourão 87301-899, Brazil;
| | - Isabel C.F.R. Ferreira
- Centro de Investigação de Montanha (CIMO), Instituto Politécnico de Bragança, Campus de Santa Apolónia, 5300-253 Bragança, Portugal; (B.H.P.); (J.P.); (T.C.S.P.P.); (M.J.A.); (R.C.C.); (I.C.F.R.F.)
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Drinking Green Tea: Despite the Risks Due to Mycotoxins, Is It Possible to Increase the Associated Health Benefits? Toxins (Basel) 2021; 13:toxins13020119. [PMID: 33562833 PMCID: PMC7914876 DOI: 10.3390/toxins13020119] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Revised: 01/25/2021] [Accepted: 02/02/2021] [Indexed: 12/21/2022] Open
Abstract
Tea has been consumed for thousands of years. Despite the different varieties, particular emphasis has been placed on green tea (GT), considering the associated health benefits following its regular consumption, some of which are due to its polyphenol constituents, such as epigallocatechin-3-gallate (EGCG). Tea is not prone to the growth of microorganisms, except fungus, when proper storage, handling, and packing conditions are compromised. Consequently, mycotoxins, secondary metabolites of fungi, could contaminate tea samples, affecting human health. In the present study, we aimed to assess the balance between risks (due to mycotoxins and high levels of EGCG) and benefits (due to moderate intake of EGCG) associated with the consumption of GT. For this, 20 GT samples (10 in bulk and 10 in bags) available in different markets in Lisbon were analyzed through a LC–MS/MS method, evaluating 38 different mycotoxins. Six samples revealed detectable values of the considered toxins. Current levels of mycotoxins and EGCG intake were not associated with health concerns. Scenarios considering an increasing consumption of GT in Portugal showed that drinking up to seven cups of GT per day should maximize the associated health benefits. The present study contributes to the future establishment of GT consumption recommendations in Portugal.
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Effect-Directed Profiling of Powdered Tea Extracts for Catechins, Theaflavins, Flavonols and Caffeine. Antioxidants (Basel) 2021; 10:antiox10010117. [PMID: 33467615 PMCID: PMC7830616 DOI: 10.3390/antiox10010117] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Revised: 12/30/2020] [Accepted: 01/07/2021] [Indexed: 02/07/2023] Open
Abstract
The antioxidative activity of Camelia sinensis tea and especially powdered tea extracts on the market, among others used as added value in functional foods, can considerably vary due to not only natural variance, but also adulteration and falsification. Thus, an effect-directed profiling was developed to prove the functional effects or health-promoting claims. It took 3-12 min per sample, depending on the assay incubation time, for 21 separations in parallel. Used as a fast product quality control, it can detect known and unknown bioactive compounds. Twenty tea extracts and a reference mixture of 11-bioactive compounds were investigated in parallel under the same chromatographic conditions by a newly developed reversed phase high-performance thin-layer chromatographic method. In eight planar on-surface assays, effect-directed tea profiles were revealed. Catechins and theaflavins turned out to be not only highly active, but also multi-potent compounds, able to act in a broad range of metabolic pathways. The flavan-3-ols acted as radical scavengers (DPPH∙ assay), antibacterials against Gram-positive Bacillus subtilis bacteria, and inhibitors of tyrosinase, α-glucosidase, β-glucosidase, and acetylcholinesterase. Further effects against Gram-negative Aliivibrio fischeri bacteria and β-glucuronidase were assigned to other components in the powdered tea extracts. According to their specifications, the activity responses of the powdered tea extracts were higher than in mere leaf extracts of green, white and black tea. The multi-imaging and effect-directed profiling was not only able to identify known functional food ingredients, but also to detect unknown bioactive compounds (including bioactive contaminants, residues or adulterations).
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Kochman J, Jakubczyk K, Antoniewicz J, Mruk H, Janda K. Health Benefits and Chemical Composition of Matcha Green Tea: A Review. Molecules 2020; 26:E85. [PMID: 33375458 PMCID: PMC7796401 DOI: 10.3390/molecules26010085] [Citation(s) in RCA: 98] [Impact Index Per Article: 24.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2020] [Revised: 12/22/2020] [Accepted: 12/24/2020] [Indexed: 12/25/2022] Open
Abstract
Japanese matcha is a type of powdered green tea, grown in a traditional way. Shading of the plants during the growth period enhances the processes of synthesis and accumulation of biologically active compounds, including theanine, caffeine, chlorophyll and various types of catechins. Green tea contains four main catechins, i.e., (-)-epicatechin (EC), (-)-epicatechin-3-gallate (ECG), (-)-epigallocatechin (EGC) and (-)-epigallocatechin-3-gallate (EGCG), of which the latter is the most active and abundant and matcha is their best condensed source. Due to its unique chemical composition and prized flavour, which sets it apart from other tea beverages, it is considered the highest quality tea. Its health-promoting properties are attributed to the high content of antioxidant and anti-inflammatory substances. Studies confirming the high antioxidant potential of tea beverages claim that it originates from the considerable content of catechins, a type of phenolic compound with beneficial effects on human health. Due to its potential for preventing many diseases and supporting cognitive function, regular consumption of matcha may have a positive effect on both physical and mental health. The aim of this review was to compile the health benefits of matcha tea. It is the first such review to be undertaken, and presents its main bioactive compounds in a systematic manner.
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Affiliation(s)
| | - Karolina Jakubczyk
- Department of Human Nutrition and Metabolomics, Pomeranian Medical University, 24 Broniewskiego Street, 71-460 Szczecin, Poland; (J.K.); (J.A.); (H.M.); (K.J.)
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25
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Ali B, Jamal QMS, Mir SR, Shams S, Kamal MA. Molecular docking studies of tea ( Thea sinensis Linn.) polyphenols inhibition pattern with Rat P-glycoprotein. PHYSICAL SCIENCES REVIEWS 2020. [DOI: 10.1515/psr-2018-0165] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Abstract
Since 3000 B.C., evergreen plant Thea sinensis (Theaceae) is used both as a social and medicinal beverage. Leaves of T. sinensis contain amino acids, vitamins, caffeine, polysaccharides and polyphenols. Most of the natural medicinal actions of tea are due to the availability and abundance of polyphenols mainly catechins. It has also been stated that some catechins were absorbed more rapidly than other compounds after the oral administration of tea and could increase the bio-enhancing activities of anticancer drugs by inhibiting P-glycoprotein (P-gp). The results of the molecular docking showed that polyphenols bind easily to the active P-gp site. All compounds exhibited fluctuating binding affinity ranged from −11.67 to −8.36 kcal/mol. Observed binding energy required for theaflavin to bind to P-gp was lowest (−11.67 kcal/mol). The obtained data that supports all the selected polyphenols inhibited P-gp and therefore may enhance the bioavailability of drugs. This study may play a vital role in finding hotspots in P-gp and eventually may be proved useful in designing compounds with high affinity and specificity to the protein.
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Affiliation(s)
- Babar Ali
- College of Pharmacy and Dentistry , Buraydah Colleges , Buraydah , Al-Qassim , Kingdom of Saudi Arabia
| | - Qazi Mohammad Sajid Jamal
- Department of Health Informatics, College of Public Health and Health Informatics , Qassim University , Al Bukayriyah , Saudi Arabia
- Novel Global Community Educational Foundation , Hebersham , Australia
| | - Showkat R. Mir
- Department of Pharmacognosy and Phytochemistry , Faculty of Pharmacy, Jamia Hamdard (Hamdard University) , New Delhi 110062 , India
| | - Saiba Shams
- Siddhartha Institute of Pharmacy , Dehra Dun 248001 , Uttarakhand , India
| | - Mohammad Amjad Kamal
- King Fahd Medical Research Center , King Abdulaziz University , Jeddah , Saudi Arabia
- West China School of Nursing / Institutes for Systems Genetics , Frontiers Science Center for Disease-related Molecular Network, West China Hospital, Sichuan University , Chengdu 610041 , Sichuan , China
- Enzymoics, 7 Peterlee Place , Hebersham , NSW 2770, Novel Global Community Educational Foundation , Australia
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26
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Idrees M, Jan FA, Hussain S, Salam A. Heavy Metals Level, Health Risk Assessment Associated with Contamination of Black Tea; A Case Study from Khyber Pakhtunkhwa (KPK), Pakistan. Biol Trace Elem Res 2020; 198:344-349. [PMID: 32086750 DOI: 10.1007/s12011-020-02059-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/04/2019] [Accepted: 01/30/2020] [Indexed: 01/09/2023]
Abstract
In the present study, 15 different commercial tea brands sold in Khyber Pakhtunkhwa were collected from the markets. The samples were analyzed for the concentrations of ten selected heavy metals. The metal concentration showed a random distribution in all samples. The mean concentration of Cd, Cu, Mn, Pb, Zn, and Fe was found in the range of 0.029-0.094 mg kg-1, 7.11-12.30 mg kg-1, 20.73-24.17 mg kg-1, 0.159-0.824 mg kg-1, 1.136-2.938 mg kg-1, and 0.670-118.30 mg kg-1 respectively. Co, Cr, Ni, and Sb were found below the detection limit of the instrument. Cu and Mn were found to be the abundant metals with a high concentration in the collected samples. The estimated daily intake (EDI), target hazard quotients (THQs), and hazard index (HI) were used for the assessment of health risks associated with the intake of metals. The metal transfer rates to tea infusion were reported from previous studies. Except for Cu, the EDI values of all the elements were found to be lower than the RfD values. The corresponding HI values of metals, in the different tea brands, were found to be below 1 suggesting that the consumption of mature tea infusions in the studied area could cause no carcinogenic risk. The principle cluster analysis (PCA) was used to reduce the number of variables to a new set which extracted three factors. For the assessment of health risks associated with dietary metal exposure, constant determination of heavy metals in all food is necessary. The present study provides valuable information to the general public about the consumption of tea infusions.
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Affiliation(s)
- Muhammad Idrees
- Department of Chemistry, Bacha Khan University Chrasadda, Chrasadda, Khyber-Pakhtunkhwa, 24420, Pakistan.
| | - Fazal Akbar Jan
- Department of Chemistry, Bacha Khan University Chrasadda, Chrasadda, Khyber-Pakhtunkhwa, 24420, Pakistan
| | - Shah Hussain
- Department of Chemistry, Bacha Khan University Chrasadda, Chrasadda, Khyber-Pakhtunkhwa, 24420, Pakistan
| | - Abdul Salam
- Department of Chemistry, Bacha Khan University Chrasadda, Chrasadda, Khyber-Pakhtunkhwa, 24420, Pakistan
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Xiao X, Erukainure OL, Sanni O, Koorbanally NA, Islam MS. Phytochemical properties of black tea ( Camellia sinensis) and rooibos tea ( Aspalathus linearis); and their modulatory effects on key hyperglycaemic processes and oxidative stress. JOURNAL OF FOOD SCIENCE AND TECHNOLOGY 2020; 57:4345-4354. [PMID: 33087948 DOI: 10.1007/s13197-020-04471-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Revised: 03/01/2020] [Accepted: 04/23/2020] [Indexed: 12/24/2022]
Abstract
The comparative phytochemicals, antioxidative and antidiabetic activities of Camellia sinensis (black tea) and Aspalathus linearis (rooibos tea) were studied in vitro and ex vivo. Concentrated infusions of the teas showed significant free radical scavenging activities in vitro. They significantly increased the glutathione level, superoxide dismutase and catalase enzyme activities in oxidative hepatic injury, while concomitantly depleting malondialdehyde level. The teas significantly inhibited intestinal glucose absorption and α-amylase activities, and elevated muscle glucose uptake. LCMS phytochemical profiling revealed the presence of hydroxycaffeic acid, l-threonate, caffeine, vanillic acid, n-acetylvaline, and spinacetin 3-glucoside in C. sinensis. While quinolinic acid, coumestrol, phloroglucinol, 8-hydroxyquercetagetin, umbelliferone, and ajoene were identified in A. linearis. These results portray the antioxidant and antidiabetic potencies of both teas, with A. linearis showed better activity compared to C. sinensis. These teas may thus be used as functional foods in the management of diabetes and other oxidative stress related metabolic disorders.
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Affiliation(s)
- Xin Xiao
- Department of Biochemistry, University of KwaZulu-Natal, Westville Campus, Durban, 4000 South Africa
| | - Ochuko L Erukainure
- Department of Biochemistry, University of KwaZulu-Natal, Westville Campus, Durban, 4000 South Africa.,Department of Pharmacology, School of Clinical Medicine, Faculty of Health Sciences, University of the Free State, Bloemfontein, 9300 South Africa
| | - Olakunle Sanni
- Department of Biochemistry, University of KwaZulu-Natal, Westville Campus, Durban, 4000 South Africa
| | - Neil A Koorbanally
- School of Chemistry and Physics, University of KwaZulu-Natal, Westville Campus, Durban, 4000 South Africa
| | - Md Shahidul Islam
- Department of Biochemistry, University of KwaZulu-Natal, Westville Campus, Durban, 4000 South Africa
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Chiang SH, Tsou MF, Chang CY, Chen CW. Physicochemical characteristics, sensory quality, and antioxidant properties of Paochung tea infusion brewed in cold water. INTERNATIONAL JOURNAL OF FOOD PROPERTIES 2020. [DOI: 10.1080/10942912.2020.1820519] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Shu-Hua Chiang
- Department of Health and Creative Vegetarian Science, Fo Guang University, Yilan, Taiwan
| | - Mei-Fang Tsou
- Department of Food Science and Biotechnology, Da-Yeh University, Changhua, Taiwan
| | - Chi-Yue Chang
- Department of Food Science and Biotechnology, Da-Yeh University, Changhua, Taiwan
| | - Chih-Wei Chen
- Bachelor Degree Program in Environment and Food Safety Laboratory Science, Chang Jung Christian University, Tainan, Taiwan
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Viegas C, Sá F, Mateus M, Santos P, Almeida B, Aranha Caetano L, Quintal Gomes A, Viegas S. Commercial green tea from Portugal: Comprehensive microbiologic analyses. Int J Food Microbiol 2020; 333:108795. [PMID: 32721627 DOI: 10.1016/j.ijfoodmicro.2020.108795] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Revised: 07/09/2020] [Accepted: 07/19/2020] [Indexed: 12/25/2022]
Abstract
In recent times green tea (GT) consumption has increased, due to the numerous studies that indicate a wide variety of health benefits following its regular consumption. The aim of this study was to assess the bioburden (bacteria and fungi) of bulk and bags of GT marketed in Lisbon and to obtain a more refined fungal burden characterization, including azole resistance profile. The bacteriota in tea bags before boiling ranged from lower than the detection limit to 1770 CFU.g-1, whereas in brew samples ranged from lower than the detection limit to 54.55 CFU.mL-1. In bulk samples before boiling ranged from lower than the detection limit to 2636 CFU.g-1, while after boiling ranged from lower than the detection limit to 72.73 CFU.mL-1. Fungal contamination on tea bags before boiling ranged from lower than the detection limit to 66.67 CFU.g-1 and after boiling, all samples presented results lower than the detection limit. Concerning bulk samples before boiling ranged from lower than the detection limit to 96.97 CFU.g-1, whereas after boiling ranged from lower the detection limit to 30.3 CFU.mL-1. Before boiling, the most common fungal species in the bagged tea (90.91 CFU.g-1; 45.45%) and bulk samples (66.67 CFU.g-1; 91.67%) was Aspergillus section Nigri. Fungal diversity was higher on bulk samples than in tea bags. Aspergillus section Nigri and Rhizopus sp. growth was observed mostly on itraconazole-supplemented Sabouraud dextrose agar media, which require further investigation. Aspergillus sections Fumigati and Nidulantes were detected by using real time PCR, but not in the GT samples in which they were identified through culture-based methods. A significantly reduction of bacterial contamination after boiling was observed, however fungal contamination with toxigenic potential was observed before and after boiling. Future research work needs to characterize in detail the mycotoxins contamination to allow a risk-benefit assessment to estimate the human health benefits and risks following tea consumption and to support policy-actions, if and when needed. The results also suggest that the conditions how tea is packed can influence the fungal diversity and this variable should be further investigated.
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Affiliation(s)
- Carla Viegas
- H&TRC- Health & Technology Research Center, ESTeSL- Escola Superior de Tecnologia da Saúde, Instituto Politécnico de Lisboa, Portugal; NOVA National School of Public Health, Public Health Research Centre, Universidade NOVA de Lisboa, Portugal; Comprehensive Health Research Center (CHRC), Portugal.
| | - Flávio Sá
- H&TRC- Health & Technology Research Center, ESTeSL- Escola Superior de Tecnologia da Saúde, Instituto Politécnico de Lisboa, Portugal
| | - Margarida Mateus
- H&TRC- Health & Technology Research Center, ESTeSL- Escola Superior de Tecnologia da Saúde, Instituto Politécnico de Lisboa, Portugal
| | - Patrícia Santos
- H&TRC- Health & Technology Research Center, ESTeSL- Escola Superior de Tecnologia da Saúde, Instituto Politécnico de Lisboa, Portugal
| | - Beatriz Almeida
- H&TRC- Health & Technology Research Center, ESTeSL- Escola Superior de Tecnologia da Saúde, Instituto Politécnico de Lisboa, Portugal
| | - Liliana Aranha Caetano
- H&TRC- Health & Technology Research Center, ESTeSL- Escola Superior de Tecnologia da Saúde, Instituto Politécnico de Lisboa, Portugal; Research Institute for Medicines (iMed.ULisboa), Faculty of Pharmacy, University of Lisbon, Lisbon, Portugal
| | - Anita Quintal Gomes
- H&TRC- Health & Technology Research Center, ESTeSL- Escola Superior de Tecnologia da Saúde, Instituto Politécnico de Lisboa, Portugal; University of Lisbon Institute of Molecular Medicine, Faculty of Medicine, Lisbon, Portugal
| | - Susana Viegas
- H&TRC- Health & Technology Research Center, ESTeSL- Escola Superior de Tecnologia da Saúde, Instituto Politécnico de Lisboa, Portugal; NOVA National School of Public Health, Public Health Research Centre, Universidade NOVA de Lisboa, Portugal; Comprehensive Health Research Center (CHRC), Portugal
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30
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Aldose Reductase Differential Inhibitors in Green Tea. Biomolecules 2020; 10:biom10071003. [PMID: 32640594 PMCID: PMC7407822 DOI: 10.3390/biom10071003] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2020] [Revised: 06/28/2020] [Accepted: 07/02/2020] [Indexed: 12/11/2022] Open
Abstract
Aldose reductase (AKR1B1), the first enzyme in the polyol pathway, is likely involved in the onset of diabetic complications. Differential inhibition of AKR1B1 has been proposed to counteract the damaging effects linked to the activity of the enzyme while preserving its detoxifying ability. Here, we show that epigallocatechin gallate (EGCG), one of the most representative catechins present in green tea, acts as a differential inhibitor of human recombinant AKR1B1. A kinetic analysis of EGCG, and of its components, gallic acid (GA) and epigallocatechin (EGC) as inhibitors of the reduction of L-idose, 4-hydroxy2,3-nonenal (HNE), and 3-glutathionyl l-4-dihydroxynonanal (GSHNE) revealed for the compounds a different model of inhibition toward the different substrates. While EGCG preferentially inhibited L-idose and GSHNE reduction with respect to HNE, gallic acid, which was still active in inhibiting the reduction of the sugar, was less active in inhibiting HNE and GSHNE reduction. EGC was found to be less efficient as an inhibitor of AKR1B1 and devoid of any differential inhibitory action. A computational study defined different interactive modes for the three substrates on the AKR1B1 active site and suggested a rationale for the observed differential inhibition. A chromatographic fractionation of an alcoholic green tea extract revealed that, besides EGCG and GA, other components may exhibit the differential inhibition of AKR1B1.
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31
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Luo K, Ma C, Xing S, An Y, Feng J, Dang H, Huang W, Qiao L, Cheng J, Xie L. White tea and its active polyphenols lower cholesterol through reduction of very-low-density lipoprotein production and induction of LDLR expression. Biomed Pharmacother 2020; 127:110146. [PMID: 32334376 DOI: 10.1016/j.biopha.2020.110146] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2020] [Revised: 04/02/2020] [Accepted: 04/04/2020] [Indexed: 12/19/2022] Open
Abstract
Emerging in vivo and vitro data suggest that white tea extract (WTE) is capable of favourably modulating metabolic syndrome, especially by ameliorating abnormal lipid metabolism. Microarray-based gene expression profiling was performed in HepG2 cells to analyze the effects of WTE from a systematic perspective. Gene Ontology and pathway analysis revealed that WTE significantly affected pathways related to lipid metabolism. WTE significantly downregulated apolipoprotein B (APOB) and microsomal triglyceride transfer protein (MTTP) expression and thereby reduced the production of very-low-density lipoprotein. In the meanwhile, WTE stimulated low-density lipoprotein-cholesterol (LDL-c) uptake through targeting low-density lipoprotein receptor (LDLR), as a consequence of the activation of sterol regulatory element-binding protein 2 (SREBP2) and peroxisome proliferator-activated receptor δ (PPARδ). Furthermore, WTE significantly downregulated triglycerides synthetic genes and reduced intracellular triglycerides accumulation. Besides, we demonstrated that the tea catechins epigallocatechin-3-gallate (EGCG) and epicatechin-3-gallate (ECG) are abundant in WTE and contribute to the regulation of cholesterol metabolism related genes, including LDLR, MTTP and APOB. Our findings suggest white tea plays important roles in ameliorating abnormal lipid metabolism in vitro.
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Affiliation(s)
- Kun Luo
- State Key Laboratory of Membrane Biology, School of Medicine, Tsinghua University, Beijing, 100084, China; Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Hangzhou, 310003, China; Medical Systems Biology Research Center, School of Medicine, Tsinghua University, Beijing, 100084, China
| | - Chengmei Ma
- National Engineering Research Center for Beijing Biochip Technology, Beijing, 102206, China
| | - Shaofang Xing
- National Engineering Research Center for Beijing Biochip Technology, Beijing, 102206, China
| | - Yannan An
- National Engineering Research Center for Beijing Biochip Technology, Beijing, 102206, China
| | - Juan Feng
- State Key Laboratory of Membrane Biology, School of Medicine, Tsinghua University, Beijing, 100084, China; Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Hangzhou, 310003, China; Medical Systems Biology Research Center, School of Medicine, Tsinghua University, Beijing, 100084, China
| | - Honglei Dang
- National Engineering Research Center for Beijing Biochip Technology, Beijing, 102206, China
| | - Wenting Huang
- State Key Laboratory of Membrane Biology, School of Medicine, Tsinghua University, Beijing, 100084, China; Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Hangzhou, 310003, China; Medical Systems Biology Research Center, School of Medicine, Tsinghua University, Beijing, 100084, China
| | - Liansheng Qiao
- State Key Laboratory of Membrane Biology, School of Medicine, Tsinghua University, Beijing, 100084, China; Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Hangzhou, 310003, China; Medical Systems Biology Research Center, School of Medicine, Tsinghua University, Beijing, 100084, China
| | - Jing Cheng
- State Key Laboratory of Membrane Biology, School of Medicine, Tsinghua University, Beijing, 100084, China; Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Hangzhou, 310003, China; Medical Systems Biology Research Center, School of Medicine, Tsinghua University, Beijing, 100084, China; National Engineering Research Center for Beijing Biochip Technology, Beijing, 102206, China.
| | - Lan Xie
- State Key Laboratory of Membrane Biology, School of Medicine, Tsinghua University, Beijing, 100084, China; Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Hangzhou, 310003, China; Medical Systems Biology Research Center, School of Medicine, Tsinghua University, Beijing, 100084, China; National Engineering Research Center for Beijing Biochip Technology, Beijing, 102206, China.
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Antioxidant Properties and Nutritional Composition of Matcha Green Tea. Foods 2020; 9:foods9040483. [PMID: 32290537 PMCID: PMC7231151 DOI: 10.3390/foods9040483] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2020] [Revised: 04/02/2020] [Accepted: 04/08/2020] [Indexed: 12/12/2022] Open
Abstract
Matcha green tea (Camellia sinensis), which originates from Japan, is commonly considered as particularly beneficial to health. A large content of polyphenols, amino acids (mainly tannins) and caffeine potentially increase the antioxidant properties of the drink. The aim of the study was to determine the antioxidant potential and the content of substances with an antioxidant effect-vitamin C, total polyphenol content including flavonoids-in infusions made from Traditional Matcha (from the first and second harvests) and Daily Matcha (from the second and third harvests) at different temperatures. The infusions were made by pouring 100 mL of distilled water once at various temperatures (25 °C, 70 °C, 80 °C and 90 °C) over 1.75 g of the plant material. Matcha tea is characterized by a high level of antioxidant substances (flavonoids 1968.8 mg/L; polyphenols 1765.1 mg/L; vitamin C 44.8 mg/L) as well as antioxidant potential (41.2% DPPH (10× dilution); 6129.5 µM Fe(II)/dm3 FRAP). The concentration of these compounds depends on the time at which the plant material was harvested as well as on the temperature of water used to prepare the infusions. For most parameters, the highest values were observed in infusions prepared at 90 °C and from the daily Matcha.
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Kausar H, Ambrin G, Okla MK, Soufan W, Al-Ghamdi AA, Ahmad A. Metabolic Flux Analysis of Catechin Biosynthesis Pathways Using Nanosensor. Antioxidants (Basel) 2020; 9:antiox9040288. [PMID: 32244268 PMCID: PMC7222200 DOI: 10.3390/antiox9040288] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2020] [Revised: 03/19/2020] [Accepted: 03/23/2020] [Indexed: 12/31/2022] Open
Abstract
(+)-Catechin is an important antioxidant of green tea (Camelia sinensis (L.) O. Kuntze). Catechin is known for its positive role in anticancerous activity, extracellular matrix degradation, cell death regulation, diabetes, and other related disorders. As a result of enormous interest in and great demand for catechin, its biosynthesis using metabolic engineering has become the subject of concentrated research with the aim of enhancing (+)-catechin production. Metabolic flux is an essential concept in the practice of metabolic engineering as it helps in the identification of the regulatory element of a biosynthetic pathway. In the present study, an attempt was made to analyze the metabolic flux of the (+)-catechin biosynthesis pathway in order to decipher the regulatory element of this pathway. Firstly, a genetically encoded fluorescence resonance energy transfer (FRET)-based nanosensor (FLIP-Cat, fluorescence indicator protein for (+)-catechin) was developed for real-time monitoring of (+)-catechin flux. In vitro characterization of the purified protein of the nanosensor showed that the nanosensor was pH stable and (+)-catechin specific. Its calculated Kd was 139 µM. The nanosensor also performed real-time monitoring of (+)-catechin in bacterial cells. In the second step of this study, an entire (+)-catechin biosynthesis pathway was constructed and expressed in E. coli in two sets of plasmid constructs: pET26b-PT7-rbs-PAL-PT7-rbs-4CL-PT7-rbs-CHS-PT7-rbs-CHI and pET26b-T7-rbs-F3H-PT7-rbs- DFR-PT7-rbs-LCR. The E. coli harboring the FLIP-Cat was transformed with these plasmid constructs. The metabolic flux analysis of (+)-catechin was carried out using the FLIP-Cat. The FLIP-Cat successfully monitored the flux of catechin after adding tyrosine, 4-coumaric acid, 4-coumaroyl CoA, naringenin chalcone, naringenin, dihydroquercetin, and leucocyanidin, individually, with the bacterial cells expressing the nanosensor as well as the genes of the (+)-catechin biosynthesis pathway. Dihydroflavonol reductase (DFR) was identified as the main regulatory element of the (+)-catechin biosynthesis pathway. Information about this regulatory element of the (+)-catechin biosynthesis pathway can be used for manipulating the (+)-catechin biosynthesis pathway using a metabolic engineering approach to enhance production of (+)-catechin.
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Affiliation(s)
- Habiba Kausar
- Department of Botany, Aligarh Muslim University, Aligarh 202002, India; (H.K.); (G.A.)
| | - Ghazala Ambrin
- Department of Botany, Aligarh Muslim University, Aligarh 202002, India; (H.K.); (G.A.)
| | - Mohammad K. Okla
- Botany and Microbiology Department, College of Science, King Saud University, P.O. Box. 2460, Riyadh 11451, Saudi Arabia; (M.K.O.); (A.A.A.-G.)
| | - Walid Soufan
- Plant Production Department, Faculty of Food and Agricultural Sciences, King Saud University, P.O. Box 2460, Riyadh 11451, Saudi Arabia;
| | - Abdullah A. Al-Ghamdi
- Botany and Microbiology Department, College of Science, King Saud University, P.O. Box. 2460, Riyadh 11451, Saudi Arabia; (M.K.O.); (A.A.A.-G.)
| | - Altaf Ahmad
- Department of Botany, Aligarh Muslim University, Aligarh 202002, India; (H.K.); (G.A.)
- Correspondence: ; Tel.: +91-817-8045-031
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Application of Double Hurdle Model on Effects of Demographics for Tea Consumption in China. J FOOD QUALITY 2020. [DOI: 10.1155/2020/9862390] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
The purpose of this study is to investigate the effects of demographic variables on tea consumption in China. A total of 12,745 samples collected from the China Health and Nutrition Survey in 2011 and a double hurdle model were used to analyze the effects of demographic variables on the extent of tea participation and consumption quantity for men and women. The results of this study indicate that the effects of demographic variables differ between genders in terms of tea participation decisions and consumption quantity decisions. For men, education, family size, region, and employment status were found to exert different effects on participation and consumption quantity decisions; for women, age, education, region, employment status, having elderly individuals in the home, and urbanization exerted different effects on their tea participation and consumption decisions. The most obvious difference between variables affecting men and women pertained to age, family size, and having elderly individuals in the home. The perspectives of each gender, coupled with the double hurdle model used in this study, offer important insights.
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35
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Estrogenic biological activity and underlying molecular mechanisms of green tea constituents. Trends Food Sci Technol 2020. [DOI: 10.1016/j.tifs.2019.11.014] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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Zhang B, Saatman KE, Chen L. Therapeutic potential of natural compounds from Chinese medicine in acute and subacute phases of ischemic stroke. Neural Regen Res 2020; 15:416-424. [PMID: 31571650 PMCID: PMC6921351 DOI: 10.4103/1673-5374.265545] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Stroke is one of the leading causes of death and disability in adults worldwide, resulting in huge social and financial burdens. Extracts from herbs, especially those used in Chinese medicine, have emerged as new pharmaceuticals for stroke treatment. Here we review the evidence from preclinical studies investigating neuroprotective properties of Chinese medicinal compounds through their application in acute and subacute phases of ischemic stroke, and highlight potential mechanisms underlying their therapeutic effects. It is noteworthy that many herbal compounds have been shown to target multiple mechanisms and in combinations may exert synergistic effects on signaling pathways, thereby attenuating multiple aspects of ischemic pathology. We conclude the paper with a general discussion of the prospects for novel natural compound-based regimens against stroke.
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Affiliation(s)
- Bei Zhang
- College of Public Health, Shaanxi University of Chinese Medicine, Xianyang, Shaanxi Province, China
| | - Kathryn E Saatman
- Spinal Cord and Brain Injury Research Center, Department of Physiology, University of Kentucky, KY, USA
| | - Lei Chen
- Spinal Cord and Brain Injury Research Center, Department of Physiology, University of Kentucky, KY, USA
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Mokbel K, Mokbel K. Chemoprevention of Breast Cancer With Vitamins and Micronutrients: A Concise Review. In Vivo 2019; 33:983-997. [PMID: 31280187 DOI: 10.21873/invivo.11568] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2019] [Revised: 06/05/2019] [Accepted: 06/21/2019] [Indexed: 02/07/2023]
Abstract
Numerous dietary components and vitamins have been found to inhibit the molecular events and signalling pathways associated with various stages of breast cancer development. To identify the vitamins and dietary micronutrients that exert protective effects against breast cancer and define their mechanism of action, we performed a literature review of in vitro, animal and epidemiological studies and selected the in vitro and animal studies with robust molecular evidence and the epidemiological studies reporting statistically significant inverse associations for a breast cancer-specific protective effect. There is sufficient evidence from in vitro, animal and epidemiological human studies that certain vitamins, such as vitamin D3, folate, vitamin B6, and beta carotene as well as dietary micronutrients, such as curcumin, piperine, sulforaphane, indole-3-carbinol, quercetin, epigallocatechin gallate (EGCG) and omega-3 polyunsaturated fatty acids (PUFAs), display an antitumoral activity against breast cancer and have the potential to offer a natural strategy for breast cancer chemoprevention and reduce the risk of breast cancer recurrence. Therefore, a supplement that contains these micronutrients, using the safest form and dosage should be investigated in future breast cancer chemoprevention studies and as part of standard breast cancer therapy.
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Affiliation(s)
- Kefah Mokbel
- The London Breast Institute, Princess Grace Hospital, London, U.K.
| | - Kinan Mokbel
- The London Breast Institute, Princess Grace Hospital, London, U.K
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Protein Binding Characteristics of the Principal Green Tea Catechins: A QCM Study Comparing Crude Extract to Pure EGCG. Biochem Res Int 2019; 2019:6154170. [PMID: 31827928 PMCID: PMC6881586 DOI: 10.1155/2019/6154170] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2019] [Revised: 09/23/2019] [Accepted: 09/28/2019] [Indexed: 11/17/2022] Open
Abstract
Label-free detection methods such as the quartz crystal microbalance (QCM) are well suited to the analysis of molecular interactions in complex mixtures such as crude botanical extracts. In the present study, the binding characteristics of epigallocatechin gallate (EGCG) and crude green tea extract solutions to bovine serum albumin (BSA) have been investigated. The adsorbed mass levels onto BSA-functionalized surfaces were measured at various solution concentrations. Langmuir and Freundlich isotherms were used to model the adsorption data. The Langmuir isotherm better described the adsorption behavior with correlations of 0.68 and 0.70 for the EGCG and the crude extract solutions, respectively. The better fit of the Langmuir model indicates that adsorption occurs homogeneously and that aggregation is negligible. The mass saturation is estimated to be 58% higher for the crude green tea solution as compared to the pure EGCG solution (7.9 ng/cm2 for green tea and 5 ng/cm2 for EGCG). The increased adsorption for the crude extract indicates that the additional tea chemical constituents are binding to alternate sites on the protein molecule and that competitive binding is a nondominant effect. However, a reduced adsorption rate for the crude extract was also observed, indicating some presence of competitive mechanisms. The results demonstrate the utility of the QCM for the analysis of protein binding in crude mixtures as well as pure compounds.
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Tong T, Liu YJ, Kang J, Zhang CM, Kang SG. Antioxidant Activity and Main Chemical Components of a Novel Fermented Tea. Molecules 2019; 24:E2917. [PMID: 31408939 PMCID: PMC6720624 DOI: 10.3390/molecules24162917] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2019] [Revised: 07/31/2019] [Accepted: 08/05/2019] [Indexed: 11/17/2022] Open
Abstract
In the present study, we aimed to develop a novel fermented tea (NFT) product and to evaluate their in vitro antioxidant potential and chemical composition. We found that NFT contained a high level of total phenolic compounds (102.98 mg gallic acid equivalents/g extract) and exhibited diverse antioxidant activities, such as scavenging of 1,1-diphenyl-2-picryl-hydrazyl (DPPH) and hydroxyl radicals, as well as reducing power. The total catechins in NFT were comparable to those of Lipton black tea (LBT), but lower than those of Boseong green tea (BGT) or Tieguanyin oolong tea (TOT). Among all catechins tested, epigallocatechin (EGC) and epigallocatechin-3-O-gallate (EGCG) were the predominant compounds in NFT. In particular, the contents of total theaflavins (TFs), theaflavin (TF), theaflavin-3-gallate (TF3G), and theaflavin-3'-gallate (TF3'G) in NFT were significantly higher than that of BGT, TOT, or LBT. NFT had the highest level of total essential amino acid and γ-aminobutyric acid (GABA) compared with BGT, TOT and LBT. Furthermore, the sensory evaluation results showed that NFT had satisfactory color, aroma, taste, and overall acceptability scores. Our results highlight the potential usefulness of this novel fermented tea as a nutraceutical food/ingredient with special functional activities.
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Affiliation(s)
- Tao Tong
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China
| | - Ya-Juan Liu
- Department of Food Engineering, Mokpo National University, 61 Dorimri, Chungkyemyon, Muangun, Jeonnam 534-729, Korea
| | - Jinhong Kang
- College of Pharmacy, Korea University, Sejong 30019, Korea,
| | - Cheng-Mei Zhang
- Department of Food Engineering, Mokpo National University, 61 Dorimri, Chungkyemyon, Muangun, Jeonnam 534-729, Korea
| | - Seong-Gook Kang
- Department of Food Engineering, Mokpo National University, 61 Dorimri, Chungkyemyon, Muangun, Jeonnam 534-729, Korea.
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Wang Y, Kan Z, Thompson HJ, Ling T, Ho CT, Li D, Wan X. 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 2019; 67:5423-5436. [PMID: 30403138 DOI: 10.1021/acs.jafc.8b05140] [Citation(s) in RCA: 111] [Impact Index Per Article: 22.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
While the Camellia sinensis cultivar and processing method are key factors that affect tea flavor and aroma, the chemical changes in nonvolatile components associated with the tea processing method using a single cultivar of C. sinensis have not been reported. Fresh leaves from C. sinensis Longjing 43 were subjected to six tea processing methods and evaluated by targeted and untargeted chromatographic procedures. On the basis of targeted assessment of the total catechin content, three clusters were identified: yellow-green, oolong-white-dark, and black. However, principal component analysis of the total tea metabolome identified four chemical phenotypes: green-yellow, oolong, black-white, and dark. Differences in the non-catechin components included amino acids and γ-aminobutyric acid, which increased in white tea, and dihydroxyphenylalanine, valine, betaine, and theophylline, which increased in dark tea. Overall, this study identified a wide range of chemicals that are affected by commonly used tea processing methods and potentially affect the bioactivity of various tea types.
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Affiliation(s)
| | | | - Henry J Thompson
- Cancer Prevention Laboratory , Colorado State University , Fort Collins , Colorado 80523 , United States
| | | | - Chi-Tang Ho
- Department of Food Science , Rutgers, The State University of New Jersey , New Brunswick , New Jersey 08901 , United States
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Radhakrishnan R, Pooja D, Kulhari H, Gudem S, Ravuri HG, Bhargava S, Ramakrishna S. Bombesin conjugated solid lipid nanoparticles for improved delivery of epigallocatechin gallate for breast cancer treatment. Chem Phys Lipids 2019; 224:104770. [PMID: 30965023 DOI: 10.1016/j.chemphyslip.2019.04.005] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2019] [Revised: 04/05/2019] [Accepted: 04/05/2019] [Indexed: 12/21/2022]
Abstract
Epigallocatechin-gallate (EGCG) is a potent anti-cancer therapeutic which effectively controls the growth of cancerous cells through a variety of different pathways. However, its molecular structure is susceptible to modifications due to cellular enzymes affecting its stability, bioavailability and hence, overall efficiency. In this study, we have initially encapsulated EGCG in the matrix of solid lipid nanoparticles to provide a stable drug carrier. To confer additional specificity towards gastrin releasing peptide receptors (GRPR) overexpressed in breast cancer, EGCG loaded nanoparticles were conjugated with a GRPR-specific peptide. In-vitro cytotoxicity studies showed that the peptide-conjugated formulations possessed greater cytotoxicity to cancer cell lines compared to the non-conjugated formulations. Further, in-vivo studies performed on C57/BL6 mice showed greater survivability and reduction in tumour volume in mice treated with peptide-conjugated formulation as compared to the mice treated with non-conjugated formulation or with plain EGCG. These results warrant the potential of the system designed in this study as a novel and effective drug delivery system in breast cancer therapy.
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Affiliation(s)
- Rasika Radhakrishnan
- Applied Biology Division, CSIR-Indian Institute of Chemical Technology, Hyderabad, India; IICT-RMIT Research Centre, CSIR-Indian Institute of Chemical Technology, Hyderabad, India; Centre for Advanced Materials and Industrial Chemistry, School of Science, RMIT University, Melbourne, Australia
| | - Deep Pooja
- Applied Biology Division, CSIR-Indian Institute of Chemical Technology, Hyderabad, India; IICT-RMIT Research Centre, CSIR-Indian Institute of Chemical Technology, Hyderabad, India; Centre for Advanced Materials and Industrial Chemistry, School of Science, RMIT University, Melbourne, Australia.
| | - Hitesh Kulhari
- School of Nano Sciences, Central University of Gujarat, Gandhinagar, India
| | - Sagarika Gudem
- Applied Biology Division, CSIR-Indian Institute of Chemical Technology, Hyderabad, India
| | - Halley Gora Ravuri
- Applied Biology Division, CSIR-Indian Institute of Chemical Technology, Hyderabad, India
| | - Suresh Bhargava
- IICT-RMIT Research Centre, CSIR-Indian Institute of Chemical Technology, Hyderabad, India; Centre for Advanced Materials and Industrial Chemistry, School of Science, RMIT University, Melbourne, Australia.
| | - Sistla Ramakrishna
- Applied Biology Division, CSIR-Indian Institute of Chemical Technology, Hyderabad, India; IICT-RMIT Research Centre, CSIR-Indian Institute of Chemical Technology, Hyderabad, India.
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Ramadan AM, Bakeer HA, Mahrous MS, Hifnawy TM. Influence of black tea on Streptococcus mutans and Lactobacillus levels in saliva in a Saudi cohort. J Taibah Univ Med Sci 2019; 14:179-186. [PMID: 31555070 PMCID: PMC6708074 DOI: 10.1016/j.jtumed.2019.02.008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2019] [Revised: 02/23/2019] [Accepted: 02/26/2019] [Indexed: 12/07/2022] Open
Abstract
Objectives Dental caries are associated with high counts of Streptococcus mutans (SM) and Lactobacillus (LB) and low saliva buffering capacity (BC). This study aimed to evaluate the antimicrobial activity of black tea on salivary cariogenic microflora, SM and LB species in an adult population. Antimicrobial activity was measured from the number of colony forming units (CFUs) of SM and LB, and BC of saliva. Methods In this prospective experimental study, unstimulated saliva samples were acquired from the participants before, immediately after, and 1 h after drinking tea by collecting saliva in sterilised containers. Samples were taken to the laboratory for incubation and subsequent counting. SM and LB counts and BC of saliva were calculated using the caries risk test (CRT). Results A total of 21 participants, 13 males and 8 females, with a mean age of 32.6 ± 8.02, were recruited in this study. Black tea had no significant effect on reducing the cariogenic bacterial counts (p > 0.05). Conclusion Based on this study, it can be deduced that black tea exhibits an insignificant antimicrobial effect against Streptococcus mutans and Lactobacillus bacteria.
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Affiliation(s)
- AbdelRahman M Ramadan
- Periodontology and Oral Medicine, Preventive Dental Sciences Department Division of Periodontology, College of Dentistry, Taibah University, KSA
| | - Hala A Bakeer
- Periodontology and Oral Medicine, Preventive Dental Sciences Department Division of Dental Public Health, College of Dentistry, Taibah University, KSA
| | - Mohamed S Mahrous
- Medical Education Department, College of Dentistry, Taibah University, Madina, KSA
| | - Tamer M Hifnawy
- Medical Education Department, College of Dentistry, Taibah University, Madina, KSA.,Public Health and Community Medicine Department, Faculty of Medicine, Beni-Suef University, Egypt
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43
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Riihimäki L, Vuorela P. Tracking of β-Lactoglobulin Binding Compounds with Biofingerprinting Chromatogram Analysis of Natural Products. Nat Prod Commun 2019. [DOI: 10.1177/1934578x0700201116] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
The addition of milk to tea has been shown to prevent the vascular protective effects of the tea. Thus we had an interest in evaluating the possible binding of compounds in extracts of black tea, Camellia sinensis (L.) O. Kunze, and nettle, Urtica dioica L, to β-lactoglobulin (βLG), which is the main proteinaceous component of whey. Since our previously miniaturised 96-well plate method based on fluorescence quenching is suitable only for pure compounds, we have developed a method of ultrafiltration sampling combined with HPLC to study the βLG-binding property of the extracts. The method development was made with extract of Piper nigrum L. (black pepper), because its major component is piperine, which has been earlier shown to bind to βLG. The results showed that piperine from P. nigrum was highly and rutin from U. dioica slightly bound to βLG. No components from C. sinensis were bound to βLG. We showed for the first time, that the ultrafiltration/HPLC system can be used in βLG-binding studies with plant extracts. Furthermore, we demonstrated that βLG could bind compounds from extracts and in this way either enhance, or decrease, their health benefits, for example in food preparations.
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Affiliation(s)
- Laura Riihimäki
- Drug Discovery and Development Technology Center, Faculty of Pharmacy, University of Helsinki, P.O. Box 56 (Viikinkaari 5 E), FI-00014 University of Helsinki, Helsinki, Finland
- Division of Pharmaceutical Biology, Faculty of Pharmacy, University of Helsinki, P.O. Box 56 (Viikinkaari 5 E), FI-00014 University of Helsinki, Helsinki, Finland
| | - Pia Vuorela
- Drug Discovery and Development Technology Center, Faculty of Pharmacy, University of Helsinki, P.O. Box 56 (Viikinkaari 5 E), FI-00014 University of Helsinki, Helsinki, Finland
- Department of Biochemistry and Pharmacy, Åbo Akademi University, Biocity, Tykistökatu 6 A, FI-20520 Turku, Finland
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Prasanth MI, Sivamaruthi BS, Chaiyasut C, Tencomnao T. A Review of the Role of Green Tea ( Camellia sinensis) in Antiphotoaging, Stress Resistance, Neuroprotection, and Autophagy. Nutrients 2019; 11:nu11020474. [PMID: 30813433 PMCID: PMC6412948 DOI: 10.3390/nu11020474] [Citation(s) in RCA: 184] [Impact Index Per Article: 36.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2019] [Revised: 02/14/2019] [Accepted: 02/19/2019] [Indexed: 12/26/2022] Open
Abstract
Tea is one of the most widely consumed beverages worldwide, and is available in various forms. Green tea is richer in antioxidants compared to other forms of tea. Tea is composed of polyphenols, caffeine, minerals, and trace amounts of vitamins, amino acids, and carbohydrates. The composition of the tea varies depending on the fermentation process employed to produce it. The phytochemicals present in green tea are known to stimulate the central nervous system and maintain overall health in humans. Skin aging is a complex process mediated by intrinsic factors such as senescence, along with extrinsic damage induced by external factors such as chronic exposure to ultraviolet (UV) irradiation—A process known as photoaging—Which can lead to erythema, edema, sunburn, hyperplasia, premature aging, and the development of non-melanoma and melanoma skin cancers. UV can cause skin damage either directly, through absorption of energy by biomolecules, or indirectly, by increased production of reactive oxygen species (ROS) and reactive nitrogen species (RNS). Green tea phytochemicals are a potent source of exogenous antioxidant candidates that could nullify excess endogenous ROS and RNS inside the body, and thereby diminish the impact of photoaging. Several in vivo and in vitro studies suggest that green tea supplementation increases the collagen and elastin fiber content, and suppresses collagen degrading enzyme MMP-3 production in the skin, conferring an anti-wrinkle effect. The precise mechanism behind the anti-photoaging effect of green tea has not been explored yet. Studies using the worm model have suggested that green tea mediated lifespan extension depends on the DAF-16 pathway. Apart from this, green tea has been reported to have stress resistance and neuroprotective properties. Its ROS scavenging activity makes it a potent stress mediator, as it can also regulate the stress induced by metal ions. It is known that tea polyphenols can induce the expression of different antioxidant enzymes and hinder the DNA oxidative damage. Growing evidence suggests that green tea can also be used as a potential agent to mediate neurodegenerative diseases, including Alzheimer’s disease. EGCG, an abundant catechin in tea, was found to suppress the neurotoxicity induced by Aβ as it activates glycogen synthase kinase-3β (GSK-3β), along with inhibiting c-Abl/FE65—the cytoplasmic nonreceptor tyrosine kinase which is involved in the development of the nervous system and in nuclear translocation. Additionally, green tea polyphenols induce autophagy, thereby revitalizing the overall health of the organism consuming it. Green tea was able to activate autophagy in HL-60 xenographs by increasing the activity of PI3 kinase and BECLIN-1. This manuscript describes the reported anti-photoaging, stress resistance, and neuroprotective and autophagy properties of one of the most widely known functional foods—green tea.
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Affiliation(s)
- Mani Iyer Prasanth
- Age-Related Inflammation and Degeneration Research Unit, Department of Clinical Chemistry, Faculty of Allied Health Sciences, Chulalongkorn University, Bangkok 10330, Thailand.
| | - Bhagavathi Sundaram Sivamaruthi
- Innovation Center for Holistic Health, Nutraceuticals and Cosmeceuticals, Faculty of Pharmacy, Chiang Mai University, Chiang Mai 50200, Thailand.
| | - Chaiyavat Chaiyasut
- Innovation Center for Holistic Health, Nutraceuticals and Cosmeceuticals, Faculty of Pharmacy, Chiang Mai University, Chiang Mai 50200, Thailand.
| | - Tewin Tencomnao
- Age-Related Inflammation and Degeneration Research Unit, Department of Clinical Chemistry, Faculty of Allied Health Sciences, Chulalongkorn University, Bangkok 10330, Thailand.
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Munialo CD, Naumovski N, Sergi D, Stewart D, Mellor DD. Critical evaluation of the extrapolation of data relative to antioxidant function from the laboratory and their implications on food production and human health: a review. Int J Food Sci Technol 2019. [DOI: 10.1111/ijfs.14135] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Claire D. Munialo
- School of Life Sciences Coventry University Priory Street Coventry CV1 5FB UK
| | - Nenad Naumovski
- Collaborative Research in Bioactives and Biomarkers (CRIBB) Group University of Canberra Bruce Canberra ACT 2617 Australia
- Discipline of Nutrition and Dietetics Faculty of Health University of Canberra Bruce Canberra ACT 2617 Australia
| | - Domenico Sergi
- Nutrition & Health Substantiation Group, Nutrition and Health Program, Health and Biosecurity Commonwealth Scientific and Industrial Research Organisation (CSIRO) Adelaide SA 5000 Australia
| | - David Stewart
- School of Life Sciences Coventry University Priory Street Coventry CV1 5FB UK
| | - Duane D. Mellor
- School of Life Sciences Coventry University Priory Street Coventry CV1 5FB UK
- Collaborative Research in Bioactives and Biomarkers (CRIBB) Group University of Canberra Bruce Canberra ACT 2617 Australia
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Franks M, Lawrence P, Abbaspourrad A, Dando R. The Influence of Water Composition on Flavor and Nutrient Extraction in Green and Black Tea. Nutrients 2019; 11:nu11010080. [PMID: 30609818 PMCID: PMC6356489 DOI: 10.3390/nu11010080] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2018] [Revised: 12/13/2018] [Accepted: 12/18/2018] [Indexed: 01/22/2023] Open
Abstract
Tea is made from the processed leaves of the Camellia sinensis plant, which is a tropical and subtropical evergreen plant native to Asia. Behind water, tea is the most consumed beverage in the world. Factors that affect tea brewing include brewing temperature, vessel, and time, water-to-leaf ratio, and, in some reports, the composition of the water used. In this project, we tested if the water used to brew tea was sufficient to influence perceived flavor to the everyday tea drinker. Black and green tea were brewed with bottled, tap, and deionized water, with brewing temperature, vessel, time, and the water-to-leaf ratio matched. The samples were analyzed with a human consumer sensory panel, as well as instrumentally for color, turbidity, and Epigallocatechin Gallate (EGCG) content. Results showed that the type of water used to brew tea drastically affected sensory properties of green tea (and mildly also for black tea), which was likely driven by a much greater degree of extraction of bitter catechins in teas brewed with more purified bottled or deionized water. For the everyday tea drinker who drinks green tea for health, the capability to double the EGCG content in tea by simply brewing with bottled or deionized water represents a clear advantage. Conversely, those drinking tea for flavor may benefit from instead brewing tea with tap water.
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Affiliation(s)
- Melanie Franks
- Department of Food Science, Cornell University, Ithaca, NY 14850, USA.
| | - Peter Lawrence
- Department of Food Science, Cornell University, Ithaca, NY 14850, USA.
| | | | - Robin Dando
- Department of Food Science, Cornell University, Ithaca, NY 14850, USA.
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A new fluorescence reagent: Synthesis, characterization and application for speciation of arsenic (III)/(VI) species in tea samples. Food Chem 2019; 270:579-584. [DOI: 10.1016/j.foodchem.2018.07.076] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2017] [Revised: 06/04/2018] [Accepted: 07/11/2018] [Indexed: 12/20/2022]
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48
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Goitia H, Quispe P, Naso LG, Martínez VR, Rey M, Rizzi AC, Ferrer EG, Williams PAM. Interactions of rutin with the oxidovanadium(iv) cation. Anticancer improvement effects of glycosylated flavonoids. NEW J CHEM 2019. [DOI: 10.1039/c9nj01039d] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This work reports the biological evaluation of the new complex Na2[VO(rut)(OH)2]·5H2O (rut = rutin, a glycosylated flavonoid).
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Affiliation(s)
- Helen Goitia
- Centro de Química Inorgánica (CEQUINOR-CONICET-CICPBA-UNLP)
- La Plata
- Argentina
| | - Patricia Quispe
- Centro de Química Inorgánica (CEQUINOR-CONICET-CICPBA-UNLP)
- La Plata
- Argentina
| | - Luciana G. Naso
- Centro de Química Inorgánica (CEQUINOR-CONICET-CICPBA-UNLP)
- La Plata
- Argentina
| | - Valeria R. Martínez
- Centro de Química Inorgánica (CEQUINOR-CONICET-CICPBA-UNLP)
- La Plata
- Argentina
| | - Marilin Rey
- Departamento de Física
- Facultad de Bioquímica y Ciencias Biológicas
- Universidad Nacional del Litoral
- 3000 Santa Fe
- Argentina
| | - Alberto C. Rizzi
- Departamento de Física
- Facultad de Bioquímica y Ciencias Biológicas
- Universidad Nacional del Litoral
- 3000 Santa Fe
- Argentina
| | - Evelina G. Ferrer
- Centro de Química Inorgánica (CEQUINOR-CONICET-CICPBA-UNLP)
- La Plata
- Argentina
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Chen L, Fan X, Lin X, Qian L, Zengin G, Delmas D, Paoli P, Teng H, Xiao J. Phenolic Extract from Sonchus oleraceus L. Protects Diabetes-related Liver Injury in Rats through TLR4/NF-κB Signaling Pathway. EFOOD 2019. [DOI: 10.2991/efood.k.191018.002] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022] Open
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50
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Green Tea Consumption and Risk of Breast Cancer and Recurrence-A Systematic Review and Meta-Analysis of Observational Studies. Nutrients 2018; 10:nu10121886. [PMID: 30513889 PMCID: PMC6316745 DOI: 10.3390/nu10121886] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2018] [Revised: 11/27/2018] [Accepted: 11/28/2018] [Indexed: 01/01/2023] Open
Abstract
Breast cancer (BC) is the most common cancer in women and several factors are involved in its onset. Green tea (GT) has been shown to have potential beneficial effects on different types of cancer. The aim of this review was to evaluate the association between GT regular consumption and risk of BC in women. The risk of BC recurrence and risk of BC in relation to menopausal status were also evaluated. A literature search of PubMed, Scopus, and Web of Science was conducted. Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines were followed to perform the systematic review and meta-analysis. Full texts were downloaded for 40 studies; however, only 13 records were included in the meta-analysis. Eight were cohort studies and five were case-control studies. The pooled sample consisted of 163,810 people. An inverse statistically significant relationship between GT and BC risk, with an Odds Ratio (OR) = 0.85 ((95% CI = 0.80–0.92), p = 0.000)), was found. Egger’s linear regression test did not show a potential publication bias (intercept 0.33, t = 0.40, p = 0.695), which was also confirmed by the symmetry of the funnel plot. Moreover, no high statistical heterogeneity (Chi2 = 31.55, df = 13, I2 = 58.79%, p = 0.003) was found. The results of this meta-analysis showed a potential protective effect of GT consumption on BC, especially for BC recurrence.
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