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Michel R, Hazimeh D, Saad EE, Olson SL, Musselman K, Elgindy E, Borahay MA. Common Beverage Consumption and Benign Gynecological Conditions. BEVERAGES (BASEL, SWITZERLAND) 2024; 10:33. [PMID: 38948304 PMCID: PMC11211953 DOI: 10.3390/beverages10020033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Indexed: 07/02/2024]
Abstract
The purpose of this article is to review the effects of four commonly consumed beverage types-sugar-sweetened beverages (SSBs), caffeinated beverages, green tea, and alcohol-on five common benign gynecological conditions: uterine fibroids, endometriosis, polycystic ovary syndrome (PCOS), anovulatory infertility, and primary dysmenorrhea (PD). Here we outline a plethora of research, highlighting studies that demonstrate possible associations between beverage intake and increased risk of certain gynecological conditions-such as SSBs and dysmenorrhea-as well as studies that demonstrate a possible protective effect of beverage against risk of gynecological condition-such as green tea and uterine fibroids. This review aims to help inform the diet choices of those with the aforementioned conditions and give those with uteruses autonomy over their lifestyle decisions.
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Affiliation(s)
- Rachel Michel
- Department of Population, Family, and Reproductive Health, Bloomberg School of Public Health, Baltimore, MD 21205 USA
| | - Dana Hazimeh
- Department of Gynecology and Obstetrics, Johns Hopkins University, Baltimore, MD 21205 USA
| | - Eslam E. Saad
- Department of Gynecology and Obstetrics, Johns Hopkins University, Baltimore, MD 21205 USA
| | - Sydney L. Olson
- Department of Gynecology and Obstetrics, Johns Hopkins University, Baltimore, MD 21205 USA
| | - Kelsey Musselman
- Department of Gynecology and Obstetrics, Johns Hopkins University, Baltimore, MD 21205 USA
| | - Eman Elgindy
- Department of Gynecology and Obstetrics, Zagazig University School of Medicine, Zagazig, 44519, Egypt
| | - Mostafa A. Borahay
- Department of Gynecology and Obstetrics, Johns Hopkins University, Baltimore, MD 21205 USA
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Ni W, Yu Y, Gao X, Han Y, Zhang W, Zhang Z, Xiao W, Hu Q, Zhang Y, Huang H, Li F, Chen M, Han J. Multilocus Distance-Regulated Sensor Array for Recognition of Polyphenols via Machine Learning and Indicator Displacement Assay. Anal Chem 2024; 96:301-308. [PMID: 38102984 DOI: 10.1021/acs.analchem.3c04107] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2023]
Abstract
Developing new strategies to construct sensor arrays that can effectively distinguish multiple natural components with similar structures in mixtures is an exceptionally challenging task. Here, we propose a new multilocus distance-modulated indicator displacement assay (IDA) strategy for constructing a sensor array, incorporating machine learning optimization to identify polyphenols. An 8-element array, comprising two fluorophores and their six dynamic covalent complexes (C1-C6) formed by pairing two fluorophores with three distinct distance-regulated quenchers, has been constructed. Polyphenols with diverse spatial arrangements and combinatorial forms compete with the fluorophores by forming pseudocycles with quenchers within the complexes, leading to varying degrees of fluorescence recovery. The array accurately and effectively distinguished four tea polyphenols and 16 tea varieties, thereby demonstrating the broad applicability of the multilocus distance-modulated IDA array in detecting polyhydroxy foods and natural medicines.
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Affiliation(s)
- Weiwei Ni
- State Key Laboratory of Natural Medicines, College of Engineering, China Pharmaceutical University, Nanjing 211109, China
| | - Yang Yu
- School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing 211109, China
| | - Xu Gao
- State Key Laboratory of Natural Medicines, College of Engineering, China Pharmaceutical University, Nanjing 211109, China
| | - Yang Han
- School of Basic Medicine and Clinical Pharmacy, China Pharmaceutical University, Nanjing 211109, China
| | - Wenhui Zhang
- State Key Laboratory of Natural Medicines, College of Engineering, China Pharmaceutical University, Nanjing 211109, China
| | - Zerui Zhang
- State Key Laboratory of Natural Medicines, College of Engineering, China Pharmaceutical University, Nanjing 211109, China
| | - Wenqi Xiao
- State Key Laboratory of Natural Medicines, College of Engineering, China Pharmaceutical University, Nanjing 211109, China
| | - Qin Hu
- Department of Laboratory Medicine, The Second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, China
| | - Yanliang Zhang
- Nanjing Research Center for Infectious Diseases of Integrated Traditional Chinese and Western Medicine, Nanjing Hospital of Chinese Medicine Affiliated to Nanjing University of Chinese Medicine, Nanjing 211109, China
| | - Hui Huang
- State Key Laboratory of Natural Medicines, College of Engineering, China Pharmaceutical University, Nanjing 211109, China
| | - Fei Li
- State Key Laboratory of Natural Medicines, College of Engineering, China Pharmaceutical University, Nanjing 211109, China
| | - Mingqi Chen
- State Key Laboratory of Natural Medicines, College of Engineering, China Pharmaceutical University, Nanjing 211109, China
| | - Jinsong Han
- State Key Laboratory of Natural Medicines, College of Engineering, China Pharmaceutical University, Nanjing 211109, China
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B S A, Sundar S, Shanmugam R, Ramadoss R, Panneerselvam S, Ramani P. Camellia sinensis Assisted Synthesis of Copper Oxide Nanoparticles (CuONPs) and Assessment of Its Antioxidant Activity and Zebrafish Embryonic Toxicology Evaluation. Cureus 2023; 15:e50220. [PMID: 38192950 PMCID: PMC10773706 DOI: 10.7759/cureus.50220] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2023] [Accepted: 12/08/2023] [Indexed: 01/10/2024] Open
Abstract
BACKGROUND - Camellia sinensis, or oolong tea, is a partially fermented version of tea used in Asian countries. The remarkable reduction activity of the tea extract can potentially be used for synthesizing nanoparticles. Recently, Camellia sinensis has gained popularity for the formulation of some metal nanoparticles. Aim To formulate green synthesis of copper oxide nanoparticles (CuONPs) mediated by Camellia sinensis (oolong tea) and assess its cytotoxicity and antioxidant properties. Materials & Methods Oolong tea extract is prepared and added to CuSO4 solution to synthesize CuO nanoparticles (CuONPs). The centrifugation pellet of CuONPs is collected and subjected to DPPH (2,2 - diphenyl -1- picrylhydrazyl hydrate) and H2O2 assays. The cytotoxicity screening is performed using zebrafish embryos. Results The reducing activity of oolong tea successfully synthesizes the copper nanoparticles. High values are obtained in DPPH (63% inhibition at 10µL concentration, 73% inhibition at 20µL, 80% at 30µL, 85% at 40µL and 90% at 50µL concentrations) and H2O2 (50% inhibition at 10µL concentration, 65% at 20µL, 68% at 30µL, 75% at 40µL and 80% at 50µL concentrations) assays. There are no morphological deformities in the zebrafish and no loss of cell viability or delayed hatching at low concentrations (below 4-8 µL), as shown by the viable embryos with no morphological deformities. Conclusion The study has evidenced high antioxidant activity and minimal cytotoxicity of CuO nanoparticles produced using Camellia sinensis, thus proving it to be a good biomaterial for a wide range of biological applications.
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Affiliation(s)
- Aardra B S
- Oral Pathology and Microbiology, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, IND
| | - Sandhya Sundar
- Oral Pathology and Microbiology, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, IND
| | - Rajeshkumar Shanmugam
- Pharmacology, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, IND
| | - Ramya Ramadoss
- Oral Pathology and Microbiology, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, IND
| | - Suganya Panneerselvam
- Oral Pathology and Microbiology, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, IND
| | - Pratibha Ramani
- Oral Pathology and Microbiology, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, IND
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Zheng X, Deng W, Wang X, Wu Z, Li C, Zhang X. Ameliorative effect of black tea extract on the skin of D-galactose-induced aging mice. Front Nutr 2023; 10:1275199. [PMID: 37781120 PMCID: PMC10540639 DOI: 10.3389/fnut.2023.1275199] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2023] [Accepted: 08/29/2023] [Indexed: 10/03/2023] Open
Abstract
Aging is a universal and irreversible process, and the skin is an important feature that reflects the aging of the organism. Skin aging has been a focus of attention in recent years because it leads to changes in an individual's external features and the loss of many important biological functions. This experiment investigated the improvement effect of black tea extract (BTE) on the skin of aging mice under D-galactose induction. After 6 weeks of administration, the changes in skin bio-chemical indices and tissue structure were compared with the blank and positive control groups. It was observed that BTE increased water and hyaluronic acid (HA) content, decreased malondialdehyde (MDA) content, enhanced superoxide dismutase (SOD), glutathione peroxidase (GSH-Px), and catalase (CAT) activities in the skin of aging mice, and improved the structure of aging damaged skin tissues and increased the content of total collagen. The experimental results showed that BTE can play a significant anti-aging effect on the skin, which can be used as a functional food for aging inhibition.
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Affiliation(s)
- Xiaojie Zheng
- Southern Zhejiang Key Laboratory of Crop Breeding, Wenzhou Vocational College of Science and Technology (Wenzhou Academy of Agricultural Sciences), Wenzhou, Zhejiang, China
| | - Wenbin Deng
- Zhejiang Tiefengtang Health Technology Co., Ltd., Wenzhou, China
| | - Xinzhou Wang
- Department of Food Science and Engineering, Ningbo University, Ningbo, China
| | - Zufang Wu
- Department of Food Science and Engineering, Ningbo University, Ningbo, China
| | - Chong Li
- Graduate School, Xuzhou Medical University, Xuzhou, China
| | - Xin Zhang
- Department of Food Science and Engineering, Ningbo University, Ningbo, China
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Hazimeh D, Massoud G, Parish M, Singh B, Segars J, Islam MS. Green Tea and Benign Gynecologic Disorders: A New Trick for An Old Beverage? Nutrients 2023; 15:1439. [PMID: 36986169 PMCID: PMC10054707 DOI: 10.3390/nu15061439] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2023] [Revised: 03/08/2023] [Accepted: 03/14/2023] [Indexed: 03/19/2023] Open
Abstract
Green tea is harvested from the tea plant Camellia sinensis and is one of the most widely consumed beverages worldwide. It is richer in antioxidants than other forms of tea and has a uniquely high content of polyphenolic compounds known as catechins. Epigallocatechin-3-gallate (EGCG), the major green tea catechin, has been studied for its potential therapeutic role in many disease contexts, including pathologies of the female reproductive system. As both a prooxidant and antioxidant, EGCG can modulate many cellular pathways important to disease pathogenesis and thus has clinical benefits. This review provides a synopsis of the current knowledge on the beneficial effects of green tea in benign gynecological disorders. Green tea alleviates symptom severity in uterine fibroids and improves endometriosis through anti-fibrotic, anti-angiogenic, and pro-apoptotic mechanisms. Additionally, it can reduce uterine contractility and improve the generalized hyperalgesia associated with dysmenorrhea and adenomyosis. Although its role in infertility is controversial, EGCG can be used as a symptomatic treatment for menopause, where it decreases weight gain and osteoporosis, as well as for polycystic ovary syndrome (PCOS).
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Affiliation(s)
| | | | | | | | - James Segars
- Department of Gynecology and Obstetrics, Division of Reproductive Sciences & Women’s Health Research, Johns Hopkins Medicine, Baltimore, MD 21205, USA
| | - Md Soriful Islam
- Department of Gynecology and Obstetrics, Division of Reproductive Sciences & Women’s Health Research, Johns Hopkins Medicine, Baltimore, MD 21205, USA
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6
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Sousa-Filho CPB, Silva V, Bolin AP, Rocha ALS, Otton R. Green tea actions on miRNAs expression – An update. Chem Biol Interact 2023; 378:110465. [PMID: 37004950 DOI: 10.1016/j.cbi.2023.110465] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2023] [Revised: 03/17/2023] [Accepted: 03/28/2023] [Indexed: 04/01/2023]
Abstract
Compounds derived from plants have been widely studied in the context of metabolic diseases and associated clinical conditions. In this regard, although the effects of Camellia sinensis plant, from which various types of teas, such as green tea, originate, have been vastly reported in the literature, the mechanisms underlying these effects remain elusive. A deep search of the literature showed that green tea's action in different cells, tissues, and diseases is an open field in the research of microRNAs (miRNAs). miRNAs are important communicator molecules between cells in different tissues implicated in diverse cellular pathways. They have emerged as an important linkage between physiology and pathophysiology, raising the issue of polyphenols can act also by changing miRNA expression. miRNAs are short, non-coding endogenous RNA, which silence the gene functions by targeting messenger RNA (mRNA) through degradation or translation repression. Therefore, the aim of this review is to present the studies that show the main compounds of green tea modulating the expression of miRNAs in inflammation, adipose tissue, skeletal muscle, and liver. We provide an overview of a few studies that have tried to demonstrate the role of miRNAs associated with the beneficial effects of compounds from green tea. We have emphasized that there is still a considerable gap in the literature investigating the role and likely involvement of miRNAs in the extensive beneficial health effects of green tea compounds already described, indicating miRNAs as potential polyphenols' mediators with a promising field to be investigated.
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Affiliation(s)
| | - Victoria Silva
- Interdisciplinary Post-graduate Program in Health Sciences, Cruzeiro do Sul University, São Paulo, Brazil
| | - Anaysa Paola Bolin
- Department of Pharmacology, Biomedical Sciences Institute, University of São Paulo, São Paulo, Brazil
| | | | - Rosemari Otton
- Interdisciplinary Post-graduate Program in Health Sciences, Cruzeiro do Sul University, São Paulo, Brazil.
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7
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Parish M, Massoud G, Hazimeh D, Segars J, Islam MS. Green Tea in Reproductive Cancers: Could Treatment Be as Simple? Cancers (Basel) 2023; 15:cancers15030862. [PMID: 36765820 PMCID: PMC9913717 DOI: 10.3390/cancers15030862] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2022] [Revised: 01/24/2023] [Accepted: 01/28/2023] [Indexed: 01/31/2023] Open
Abstract
Green tea originates from the tea plant Camellia sinensis and is one of the most widely consumed beverages worldwide. Green tea polyphenols, commonly known as catechins, are the major bioactive ingredients and account for green tea's unique health benefits. Epigallocatechin-3-gallate (EGCG), is the most potent catechin derivative and has been widely studied for its pro- and anti-oxidative effects. This review summarizes the chemical and chemopreventive properties of green tea in the context of female reproductive cancers. A comprehensive search of PubMed and Google Scholar up to December 2022 was conducted. All original and review articles related to green tea or EGCG, and gynecological cancers published in English were included. The findings of several in vitro, in vivo, and epidemiological studies examining the effect of green tea on reproductive cancers, including ovarian, cervical, endometrial, and vulvar cancers, are presented. Studies have shown that this compound targets specific receptors and intracellular signaling pathways involved in cancer pathogenesis. The potential benefits of using green tea in the treatment of reproductive cancers, alone or in conjunction with chemotherapeutic agents, are examined, shedding light on new therapeutic strategies for the management of female reproductive cancers.
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Affiliation(s)
| | | | | | - James Segars
- Correspondence: (J.S.); or (M.S.I.); Tel.: +1-410-614-2000 (J.S. & M.S.I.)
| | - Md Soriful Islam
- Correspondence: (J.S.); or (M.S.I.); Tel.: +1-410-614-2000 (J.S. & M.S.I.)
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8
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Farhan M. Green Tea Catechins: Nature’s Way of Preventing and Treating Cancer. Int J Mol Sci 2022; 23:ijms231810713. [PMID: 36142616 PMCID: PMC9501439 DOI: 10.3390/ijms231810713] [Citation(s) in RCA: 33] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Revised: 09/12/2022] [Accepted: 09/12/2022] [Indexed: 12/02/2022] Open
Abstract
Green tea’s (Camellia sinensis) anticancer and anti-inflammatory effects are well-known. Catechins are the most effective antioxidants among the physiologically active compounds found in Camellia sinesis. Recent research demonstrates that the number of hydroxyl groups and the presence of specific structural groups have a substantial impact on the antioxidant activity of catechins. Unfermented green tea is the finest source of these chemicals. Catechins have the ability to effectively neutralize reactive oxygen species. The catechin derivatives of green tea include epicatechin (EC), epigallocatechin (EGC), epicatechin gallate (ECG) and epigallocatechin gallate (EGCG). EGCG has the greatest anti-inflammatory and anticancer potential. Notably, catechins in green tea have been explored for their ability to prevent a variety of cancers. Literature evidence, based on epidemiological and laboratory studies, indicates that green tea catechins have certain properties that can serve as the basis for their consideration as lead molecules in the synthesis of novel anticancer drugs and for further exploration of their role as pharmacologically active natural adjuvants to standard chemotherapeutics. The various sections of the article will focus on how catechins affect the survival, proliferation, invasion, angiogenesis, and metastasis of tumors by modulating cellular pathways.
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Affiliation(s)
- Mohd Farhan
- Department of Basic Sciences, Preparatory Year Deanship, King Faisal University, Al-Ahsa 31982, Saudi Arabia
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9
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Yin P, Kong YS, Liu PP, Wang JJ, Zhu Y, Wang GM, Sun MF, Chen Y, Guo GY, Liu ZH. A critical review of key odorants in green tea: Identification and biochemical formation pathway. Trends Food Sci Technol 2022. [DOI: 10.1016/j.tifs.2022.09.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
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10
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de Miranda JF, Ruiz LF, Silva CB, Uekane TM, Silva KA, Gonzalez AGM, Fernandes FF, Lima AR. Kombucha: A review of substrates, regulations, composition, and biological properties. J Food Sci 2022; 87:503-527. [PMID: 35029317 DOI: 10.1111/1750-3841.16029] [Citation(s) in RCA: 41] [Impact Index Per Article: 20.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2021] [Revised: 12/03/2021] [Accepted: 12/12/2021] [Indexed: 12/21/2022]
Abstract
Kombucha has been gaining prominence around the world and becoming popular due to its good health benefits. This beverage is historically obtained by the tea fermentation of Camellia sinensis and by a biofilm of cellulose containing the symbiotic culture of bacteria and yeast (SCOBY). The other substrates added to the C. sinensis tea have also been reported to help kombucha production. The type as well as the amount of sugar substrate, which is the origin of SCOBY, in addition to time and temperature of fermentation influence the content of organic acids, vitamins, total phenolics, and alcoholic content of kombucha. The route involved in the metabolite biotransformation identified in kombucha so far and the microorganisms involved in the process need to be further studied. Some nutritional properties and benefits related to the beverage have already been reported. Antioxidant and antimicrobial activities and antidiabetic and anticarcinogenic effects are some of the beneficial effects attributed to kombucha. Nevertheless, scientific literature needs clinical studies to evaluate these benefits in human beings. The toxic effects associated with the consumption of kombucha are still unclear, but due to the possibility of adverse reactions occurring, its consumption is contraindicated in infants and pregnant women, children under 4-years-old, patients with kidney failure, and patients with HIV. The regulations in place for kombucha address a number of criteria, mainly for the pH and alcohol content, in order to guarantee the quality and safety of the beverage as well as to ensure transparency of information for consumers.
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Affiliation(s)
| | - Larissa Fernandes Ruiz
- Department of Bromatology, Pharmacy School, Fluminense Federal University, Niterói, RJ, Brazil
| | - Cíntia Borges Silva
- Department of Bromatology, Pharmacy School, Fluminense Federal University, Niterói, RJ, Brazil
| | - Thais Matsue Uekane
- Department of Bromatology, Pharmacy School, Fluminense Federal University, Niterói, RJ, Brazil
| | - Kelly Alencar Silva
- Department of Bromatology, Pharmacy School, Fluminense Federal University, Niterói, RJ, Brazil
| | | | | | - Adriene Ribeiro Lima
- Department of Bromatology, Pharmacy School, Fluminense Federal University, Niterói, RJ, Brazil
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11
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Synthesis of three quasi liquid Schiff bases between hexanal and adenine, cytosine, and l-leucine, structural interpretation, quantum mechanical studies and biological activity prediction. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.117305] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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12
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Kombucha beverage from non-conventional edible plant infusion and green tea: Characterization, toxicity, antioxidant activities and antimicrobial properties. BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY 2021. [DOI: 10.1016/j.bcab.2021.102032] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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13
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Zhu YM, Dong JJ, Jin J, Liu JH, Zheng XQ, Lu JL, Liang YR, Ye JH. Roasting process shaping the chemical profile of roasted green tea and the association with aroma features. Food Chem 2021; 353:129428. [PMID: 33714119 DOI: 10.1016/j.foodchem.2021.129428] [Citation(s) in RCA: 52] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2020] [Revised: 01/31/2021] [Accepted: 02/19/2021] [Indexed: 11/17/2022]
Abstract
Roasting process impacts the chemical profile and aroma of roasted tea. To compare the impacts of far-infrared irradiation and drum roasting treatments (light, medium and heavy degrees), the corresponding roasted teas were prepared from steamed green tea for chemical analyses and quantitative descriptive analysis on aroma, and correlations between volatiles and aroma attributes were studied. There were 8 catechins, 13 flavonol glycosides and 105 volatiles quantified. Under heavy roasting treatments, most catechins and flavonol glycosides decreased, and aldehydes, ketones, furans, pyrroles/pyrazines, and miscellaneous greatly increased, while far-infrared irradiated teas had distinct nutty aroma compared with the roasty and burnt odor of drum roasted teas. The weighted correlation network analysis result showed that 56 volatiles were closely correlated with the aroma attributes of roasted teas. This study reveals the differential chemical and sensory changes of roasted teas caused by different roasting processes, and provides a novel way for flavor chemistry study.
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Affiliation(s)
- Yu-Meng Zhu
- Zhejiang University Tea Research Institute, 866 Yuhangtang Road, Hangzhou 310058, China
| | - Jun-Jie Dong
- Zhejiang Camel Transworld (Organic Food) Co., Ltd., 16 Chachang Road, Yuhang District, Hangzhou 310000, China
| | - Jing Jin
- Zhejiang Agricultural Technical Extension Center, 29 Fengqidong Road, Hangzhou 310000, China
| | - Jin-Hua Liu
- Zhejiang Camel Transworld (Organic Food) Co., Ltd., 16 Chachang Road, Yuhang District, Hangzhou 310000, China
| | - Xin-Qiang Zheng
- Zhejiang University Tea Research Institute, 866 Yuhangtang Road, Hangzhou 310058, China
| | - Jian-Liang Lu
- Zhejiang University Tea Research Institute, 866 Yuhangtang Road, Hangzhou 310058, China
| | - Yue-Rong Liang
- Zhejiang University Tea Research Institute, 866 Yuhangtang Road, Hangzhou 310058, China.
| | - Jian-Hui Ye
- Zhejiang University Tea Research Institute, 866 Yuhangtang Road, Hangzhou 310058, China.
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14
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Comparative evaluation of antioxidant properties of lemongrass and other tea brands. SCIENTIFIC AFRICAN 2021. [DOI: 10.1016/j.sciaf.2021.e00718] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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15
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Pýnar SM, Erez ME, Fidan M, Eroðlu H, Dalar A. Determination of Biological Activity and Active Substances of Thecocarpus Carvifolius (BOISS.) Hedge & Lamond. Pharm Chem J 2021. [DOI: 10.1007/s11094-021-02335-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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16
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Manessis G, Kalogianni AI, Lazou T, Moschovas M, Bossis I, Gelasakis AI. Plant-Derived Natural Antioxidants in Meat and Meat Products. Antioxidants (Basel) 2020; 9:E1215. [PMID: 33276503 PMCID: PMC7761563 DOI: 10.3390/antiox9121215] [Citation(s) in RCA: 61] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2020] [Revised: 11/21/2020] [Accepted: 11/29/2020] [Indexed: 01/19/2023] Open
Abstract
The global meat industry is constantly evolving due to changes in consumer preferences, concerns and lifestyles, as well as monetary, geographical, political, cultural and religious factors. Part of this evolution is the introduction of synthetic antioxidants to increase meat and meat products' shelf-life, and reduce meat spoilage due to lipid and protein oxidation. The public perception that natural compounds are safer and healthier per se has motivated the meat industry to replace synthetic antioxidants with plant-derived ones in meat systems. Despite several promising results from in vitro and in situ studies, the effectiveness of plant-derived antioxidants against lipid and protein oxidation has not been fully documented. Moreover, the utility, usability, marketability and potential health benefits of natural antioxidants are not yet fully proven. The present review aims to (i) describe the major chemical groups of plant-derived antioxidants and their courses of action; (ii) present the application of spices, herbs and fruits as antioxidants in meat systems; and (iii) discuss the legislative framework, future trends, challenges and limitations that are expected to shape their acceptance and mass exploitation by the meat industry.
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Affiliation(s)
- Georgios Manessis
- Laboratory of Anatomy and Physiology of Farm Animals, Department of Animal Science, Agricultural University of Athens (AUA), Iera Odos 75 Str., 11855 Athens, Greece; (G.M.); (A.I.K.); (M.M.)
| | - Aphrodite I. Kalogianni
- Laboratory of Anatomy and Physiology of Farm Animals, Department of Animal Science, Agricultural University of Athens (AUA), Iera Odos 75 Str., 11855 Athens, Greece; (G.M.); (A.I.K.); (M.M.)
| | - Thomai Lazou
- Laboratory of Hygiene of Foods of Animal Origin-Veterinary Public Health, School of Veterinary Medicine, Faculty of Health Sciences, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece;
| | - Marios Moschovas
- Laboratory of Anatomy and Physiology of Farm Animals, Department of Animal Science, Agricultural University of Athens (AUA), Iera Odos 75 Str., 11855 Athens, Greece; (G.M.); (A.I.K.); (M.M.)
| | - Ioannis Bossis
- Laboratory of Animal Husbandry, Department of Animal Production, Faculty of Agriculture, Forestry and Natural Environment, School of Agriculture, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece;
| | - Athanasios I. Gelasakis
- Laboratory of Anatomy and Physiology of Farm Animals, Department of Animal Science, Agricultural University of Athens (AUA), Iera Odos 75 Str., 11855 Athens, Greece; (G.M.); (A.I.K.); (M.M.)
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Musial C, Kuban-Jankowska A, Gorska-Ponikowska M. Beneficial Properties of Green Tea Catechins. Int J Mol Sci 2020; 21:ijms21051744. [PMID: 32143309 PMCID: PMC7084675 DOI: 10.3390/ijms21051744] [Citation(s) in RCA: 244] [Impact Index Per Article: 61.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2020] [Revised: 02/28/2020] [Accepted: 02/29/2020] [Indexed: 12/17/2022] Open
Abstract
Green tea (Camellia sinesis) is widely known for its anticancer and anti-inflammatory properties. Among the biologically active compounds contained in Camellia sinesis, the main antioxidant agents are catechins. Recent scientific research indicates that the number of hydroxyl groups and the presence of characteristic structural groups have a major impact on the antioxidant activity of catechins. The best source of these compounds is unfermented green tea. Depending on the type and origin of green tea leaves, their antioxidant properties may be uneven. Catechins exhibit the strong property of neutralizing reactive oxygen and nitrogen species. The group of green tea catechin derivatives includes: epicatechin, epigallocatechin, epicatechin gallate and epigallocatechin gallate. The last of these presents the most potent anti-inflammatory and anticancer potential. Notably, green tea catechins are widely described to be efficient in the prevention of lung cancer, breast cancer, esophageal cancer, stomach cancer, liver cancer and prostate cancer. The current review aims to summarize the potential anticancer effects and molecular signaling pathways of major green tea catechins. It needs to be clearly emphasized that green tea as well as green tea catechols cannot replace the standard chemotherapy. Nonetheless, their beneficial effects may support the standard anticancer approach.
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Affiliation(s)
- Claudia Musial
- Department of Medical Chemistry, Medical University of Gdansk, 80-211 Gdansk, Poland; (C.M.); (A.K.-J.)
| | - Alicja Kuban-Jankowska
- Department of Medical Chemistry, Medical University of Gdansk, 80-211 Gdansk, Poland; (C.M.); (A.K.-J.)
| | - Magdalena Gorska-Ponikowska
- Department of Medical Chemistry, Medical University of Gdansk, 80-211 Gdansk, Poland; (C.M.); (A.K.-J.)
- Department of Biophysics, Institute of Biomaterials and Biomolecular Systems, University of Stuttgart, 70569 Stuttgart, Germany
- Euro-Mediterranean Institute of Science and Technology, 90139 Palermo, Italy
- Correspondence:
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18
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Kaur A, Farooq S, Sehgal A. A Comparative Study of Antioxidant Potential and Phenolic Content in White (Silver Needle), Green and Black Tea. CURRENT NUTRITION & FOOD SCIENCE 2019. [DOI: 10.2174/1573401313666171016162310] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Background:
White, green and black are the major tea types obtained from the same tea
plant (Camellia sinensis). The differences in processing result in different types of tea, of which green
tea (20%) and black tea (78%) are the most consumed worldwide and also white tea is gaining popularity
due to its subtle taste and recent evidences about its health benefits. Silver needle is a sub type of
white tea, made purely from buds whereas green tea is procured from leaves that are steamed or
panfried, and to produce black tea, the tea leaves are withered, fully oxidized and then dried.
Objective:
The present study was undertaken to analyze and compare the antioxidant activity and phenolic
composition of white (silver needle), green and black teas of same brand.
Method:
The radical scavenging ability of different tea types was measured using various antioxidant
assays. The total phenolic content was also estimated using Folin-Ciocalteu’s method.
Results:
The white tea (silver needle) demonstrated highest radical scavenging activity followed by
green and then black tea in various antioxidant assays performed. The total phenolic content of different
types of tea exhibited the following order: white tea (133.30mg/g) > green tea (118.37mg/g) >
black tea (101.8mg/g). A strong correlation was observed between the total phenolic content and antioxidant
activity of different tea types, the correlation coefficient ranged from 0.87-0.97.
Conclusion:
White tea (silver needle) manifested highest antioxidant activity followed by green and
least in black tea. The pronounced antioxidant ability of WT (silver needle) may be ascribed to the different
parts of the plant (unopened buds) and the least processing it undergoes, followed by obtaining
green tea and black tea from different parts of the plant (leaves), and variation in degree of processing.
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Affiliation(s)
- Amandeep Kaur
- Department of Biotechnology, School of Bioengineering and Biosciences, Lovely Professional University, Phagwara, Punjab, India
| | - Sumaya Farooq
- Department of Zoology, School of Bioengineering and Biosciences, Lovely Professional University, Phagwara, Punjab, India
| | - Amit Sehgal
- Department of Zoology, School of Bioengineering and Biosciences, Lovely Professional University, Phagwara, Punjab, India
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Multivariate effects of Chinese keemun black tea grades (Camellia sinensis var. sinensis) on the phenolic composition, antioxidant, antihemolytic and cytotoxic/cytoprotection activities. Food Res Int 2019; 125:108516. [PMID: 31554085 DOI: 10.1016/j.foodres.2019.108516] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2019] [Revised: 06/19/2019] [Accepted: 06/21/2019] [Indexed: 12/19/2022]
Abstract
The main objectives of the study were to compare the phenolic composition, chemical and biological antioxidant activities, and cytotoxicity towards IMR90, HCT8, and A549 cell lines of eight grades of Chinese keemun black tea (Camellia sinensis var. sinensis) using a statistical approach. No cytotoxic effects were observed on IMR90 normal cells. Our results all together show that the chemical antioxidant capacity of high-grade black teas measured by DPPH, FRAP, and total reducing capacity assays was correspondingly higher than the mean values of low-grade teas and these antioxidant assays were not associated with cytotoxicity towards cancerous cell lines (HCT8 and A549). High grades of Chinese keemun black teas contained higher contents of total phenolics, flavonoids and ortho-diphenols than lower grades and theaflavin-3,3'-di-gallate could only be detected in high black tea grades (T1 and T2). Intermediate-high keemun black tea grades - C1, C3, T1, and T2 - which also had the highest mean values of TPC, flavonoids, o-diphenols, theaflavin-3-gallate, theaflavin-3'-gallate, Fe2+ chelating ability, and chemical antioxidant activity, presented the highest inhibition of Wistar rat's brain oxidation. No clear differentiation and trend were observed between erythrocyte protection and Chinese black tea grades as results clearly showed that intermediate black tea grades (C3 and C4) protected more the human erythrocytes against mechanical stress. Our study shows that although higher Chinese keemun black tea grades (T1 and T2) presented the highest TPC, flavonoids, and chemical antioxidant activity, these in vitro chemical assays were not translated into higher biological activity.
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20
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Amadi CN, Offor SJ, Frazzoli C, Orisakwe OE. Natural antidotes and management of metal toxicity. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:18032-18052. [PMID: 31079302 DOI: 10.1007/s11356-019-05104-2] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2019] [Accepted: 04/04/2019] [Indexed: 06/09/2023]
Abstract
The global burden of heavy metal especially mercury, arsenic, lead, and cadmium toxicities remains a significant public health challenge. Developing nations are particularly at high risk and carry the highest burden of this hazard. Chelation therapy has been the mainstay for treatment of heavy metal poisoning where the chelating agent binds metal ions to form complex ring-like structures called "chelates" to enhance their elimination from the body. Metal chelators have some drawbacks such as redistribution of some heavy metals from other tissues to the brain thereby increasing its neurotoxicity, causing loss of essential metals such as copper and zinc as well as some serious adverse effects, e.g., hepatotoxicity. The use of natural antidotes, which are easily available, affordable, and with little or no side effects compared to the classic metal chelators, is the focus of this review and suggested as cheaper options for developing nations in the treatment of heavy metal poisoning.
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Affiliation(s)
- Cecilia Nwadiuto Amadi
- Department of Experimental Pharmacology & Toxicology, Faculty of Pharmacy, University of Port-Harcourt, Port-Harcourt, Rivers State, Nigeria
| | - Samuel James Offor
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, University of Uyo, Uyo, Akwa Ibom State, Nigeria
| | - Chiara Frazzoli
- Department of Cardiovascular and Endocrine-Metabolic Diseases, and Ageing, Istituto Superiore di Sanità (Italian National Institute of Health), Rome, Italy
| | - Orish Ebere Orisakwe
- Department of Experimental Pharmacology & Toxicology, Faculty of Pharmacy, University of Port-Harcourt, Port-Harcourt, Rivers State, Nigeria.
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Xin Z, Jun S, Xiaohong W, Bing L, Ning Y, Chunxia D. Research on moldy tea feature classification based on WKNN algorithm and NIR hyperspectral imaging. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2019; 206:378-383. [PMID: 30157445 DOI: 10.1016/j.saa.2018.07.049] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/03/2018] [Revised: 06/25/2018] [Accepted: 07/16/2018] [Indexed: 06/08/2023]
Abstract
In order to identify the moldy tea leaves in a fast and nondestructive way, a method involving wavelet coupled with k-nearest neighbor (WKNN) was proposed to select effective characteristic wavelengths in this paper. The hyperspectral imaging of 300 dried tea samples with 3 different mildew degrees (contrast check, mild moldy and severe moldy) were obtained using hyperspectral data acquisition device. Besides, food microbiological examination results showed that mold count and total numbers of colony increased with the increase of storage time, temperature and humidity. Roughness penalty smoothing (RPS) algorithm was used to preprocess the raw spectra. Afterwards, WKNN was applied to select the optimal wavelengths of spectral data by using db4, db6, sym5, sym7 as wavelet basis functions, respectively. In addition, five layers of wavelet decomposition were adopted based on different wavelet basis functions. Linear discriminant analysis (LDA) algorithm was used to build the classification models based on preprocessed spectra feature in characteristic wavelengths. The results showed that four optimal prediction models were optimal decomposition level in each wavelet basis function. In addition, the best performance model among all LDA models achieved an identification rate of 100% in the calibration set and 98.33% in the prediction set, in which db4 was used as wavelet basis function and the optimal wavelet decomposition level was 2. WKNN algorithm can effectively achieve the best wavelet decomposition layer and the best wavelengths. WKNN algorithm combined with NIR hyperspectral imaging technology can realize the effective wavelength extraction and classification of dried tea with different mildew degrees.
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Affiliation(s)
- Zhou Xin
- School of Electrical and Information Engineering of Jiangsu University, Zhenjiang 212013, China
| | - Sun Jun
- School of Electrical and Information Engineering of Jiangsu University, Zhenjiang 212013, China.
| | - Wu Xiaohong
- School of Electrical and Information Engineering of Jiangsu University, Zhenjiang 212013, China
| | - Lu Bing
- School of Electrical and Information Engineering of Jiangsu University, Zhenjiang 212013, China
| | - Yang Ning
- School of Electrical and Information Engineering of Jiangsu University, Zhenjiang 212013, China
| | - Dai Chunxia
- School of Electrical and Information Engineering of Jiangsu University, Zhenjiang 212013, China
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22
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Shiono T, Yamamoto K, Yotsumoto Y, Kawai J, Imada N, Hioki J, Naganuma H, Eguchi T, Kurihara M, Yoshida A, Deuchi K. Selective decaffeination of tea extracts by montmorillonite. J FOOD ENG 2017. [DOI: 10.1016/j.jfoodeng.2016.12.015] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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23
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Determination of volatile organic compounds, catechins, caffeine and theanine in Jukro tea at three growth stages by chromatographic and spectrometric methods. Food Chem 2017; 219:443-452. [DOI: 10.1016/j.foodchem.2016.09.184] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2016] [Revised: 09/04/2016] [Accepted: 09/28/2016] [Indexed: 11/23/2022]
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24
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Evaluation and Optimization of a Superior Extraction Method for the Characterization of the Volatile Profile of Black Tea by HS-SPME/GC-MS. FOOD ANAL METHOD 2017. [DOI: 10.1007/s12161-016-0785-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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25
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Kim Y, Lee KG, Kim MK. Volatile and non-volatile compounds in green tea affected in harvesting time and their correlation to consumer preference. Journal of Food Science and Technology 2016; 53:3735-3743. [PMID: 28017988 DOI: 10.1007/s13197-016-2349-y] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Revised: 09/08/2016] [Accepted: 09/16/2016] [Indexed: 11/28/2022]
Abstract
Current study was designed to find out how tea harvesting time affects the volatile and non-volatile compounds profiles of green tea. In addition, correlation of instrumental volatile and non-volatile compounds analyses to consumer perception were analyzed. Overall, earlier harvested green tea had stronger antioxidant capacity (~61.0%) due to the polyphenolic compounds from catechin (23,164 mg/L), in comparison to later harvested green teas (11,961 mg/L). However, high catechin content in green tea influenced negatively the consumer likings of green tea, due to high bitterness (27.6%) and astringency (13.4%). Volatile compounds drive consumer liking of green tea products were also identified, that included linalool, 2,3-methyl butanal, 2-heptanone, (E,E)-3,5-Octadien-2-one. Finding from current study are useful for green tea industry as it provide the difference in physiochemical properties of green tea harvested at different intervals.
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Affiliation(s)
- Youngmok Kim
- Synergy Research and Development Center, Synergy Flavors, 2991 Hamilton Mason Rd, Hamilton, OH 45011 USA
| | - Kwang-Geun Lee
- Department of Food Science and Biotechnology, Dongguk University-Seoul, 32, Dongguk-ro, Ilsandong-gu, Goyang-si, Republic of Korea
| | - Mina K Kim
- Department of Food Science and Human Nutrition, Chonbuk National University, 567 Baekjedaero, Deokjin-gu, Jeonju-si, Jeonbuk Republic of Korea
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26
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Ayrle H, Mevissen M, Kaske M, Nathues H, Gruetzner N, Melzig M, Walkenhorst M. Medicinal plants--prophylactic and therapeutic options for gastrointestinal and respiratory diseases in calves and piglets? A systematic review. BMC Vet Res 2016; 12:89. [PMID: 27268043 PMCID: PMC4896019 DOI: 10.1186/s12917-016-0714-8] [Citation(s) in RCA: 59] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2015] [Accepted: 05/30/2016] [Indexed: 12/16/2022] Open
Abstract
BACKGROUND Gastrointestinal and respiratory diseases in calves and piglets lead to significant economic losses in livestock husbandry. A high morbidity has been reported for diarrhea (calves ≤ 35%; piglets ≤ 50%) and for respiratory diseases (calves ≤ 80%; piglets ≤ 40%). Despite a highly diverse etiology and pathophysiology of these diseases, treatment with antimicrobials is often the first-line therapy. Multi-antimicrobial resistance in pathogens results in international accordance to strengthen the research in novel treatment options. Medicinal plants bear a potential as alternative or additional treatment. Based on the versatile effects of their plant specific multi-component-compositions, medicinal plants can potentially act as 'multi-target drugs'. Regarding the plurality of medicinal plants, the aim of this systematic review was to identify potential medicinal plant species for prevention and treatment of gastrointestinal and respiratory diseases and for modulation of the immune system and inflammation in calves and piglets. RESULTS Based on nine initial sources including standard textbooks and European ethnoveterinary studies, a total of 223 medicinal plant species related to the treatment of gastrointestinal and respiratory diseases was identified. A defined search strategy was established using the PRISMA statement to evaluate 30 medicinal plant species starting from 20'000 peer-reviewed articles published in the last 20 years (1994-2014). This strategy led to 418 references (257 in vitro, 84 in vivo and 77 clinical trials, thereof 48 clinical trials in veterinary medicine) to evaluate effects of medicinal plants and their efficacy in detail. The findings indicate that the most promising candidates for gastrointestinal diseases are Allium sativum L., Mentha x piperita L. and Salvia officinalis L.; for diseases of the respiratory tract Echinacea purpurea (L.) MOENCH, Thymus vulgaris L. and Althea officinalis L. were found most promising, and Echinacea purpurea (L.) MOENCH, Camellia sinensis (L.) KUNTZE, Glycyrrhiza glabra L. and Origanum vulgare L. were identified as best candidates for modulation of the immune system and inflammation. CONCLUSIONS Several medicinal plants bear a potential for novel treatment strategies for young livestock. There is a need for further research focused on gastrointestinal and respiratory diseases in calves and piglets, and the findings of this review provide a basis on plant selection for future studies.
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Affiliation(s)
- Hannah Ayrle
- Department of Livestock Sciences, Research Institute of Organic Agriculture (FiBL), Ackerstrasse 113, postbox 219, Frick, 5070, Switzerland. .,Division Veterinary Pharmacology & Toxicology, Department Clinical Research and Veterinary Public Health, Vetsuisse Faculty, University of Bern, Laenggassstrasse 124, Bern, 3012, Switzerland.
| | - Meike Mevissen
- Division Veterinary Pharmacology & Toxicology, Department Clinical Research and Veterinary Public Health, Vetsuisse Faculty, University of Bern, Laenggassstrasse 124, Bern, 3012, Switzerland
| | - Martin Kaske
- Department of Farm Animals, Vetsuisse Faculty, University of Zurich, Winterthurerstrasse 260, Zurich, 8057, Switzerland
| | - Heiko Nathues
- Department of Clinical Veterinary Medicine, Swine Clinic, Vetsuisse Faculty, University of Bern, Bremgartenstrasse 109a, Bern, 3012, Switzerland
| | - Niels Gruetzner
- Department of Clinical Veterinary Medicine, Swine Clinic, Vetsuisse Faculty, University of Bern, Bremgartenstrasse 109a, Bern, 3012, Switzerland
| | - Matthias Melzig
- Dahlem Centre of Plant Sciences, Institute of Pharmacy, Freie Universität Berlin, Koenigin-Luise-Strasse 2 + 4, Berlin, 14195, Germany
| | - Michael Walkenhorst
- Department of Livestock Sciences, Research Institute of Organic Agriculture (FiBL), Ackerstrasse 113, postbox 219, Frick, 5070, Switzerland
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27
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Bi W, He C, Ma Y, Shen J, Zhang LH, Peng Y, Xiao P. Investigation of free amino acid, total phenolics, antioxidant activity and purine alkaloids to assess the health properties of non-Camellia tea. Acta Pharm Sin B 2016; 6:170-81. [PMID: 27006902 PMCID: PMC4788713 DOI: 10.1016/j.apsb.2015.11.003] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2015] [Revised: 11/06/2015] [Accepted: 11/06/2015] [Indexed: 12/05/2022] Open
Abstract
To find novel functional beverages from folk teas, 33 species of frequently used non-Camellia tea (plants other than Camellia) were collected and compared with Camellia tea (green tea, pu-erh tea and black tea) for the first time. Data are reported here on the quantities of 20 free amino acids (FAAs) and three purine alkaloids (measured by UHPLC), total polyphenols (measured by Folin-Ciocalteu assay), and antioxidant activity (DPPH). The total amounts of FAAs in non-Camellia tea (0.62–18.99 mg/g) are generally less than that of Camellia tea (16.55–24.99 mg/g). However, for certain FAAs, the quantities were much higher in some non-Camellia teas, such as γ-aminobutyric acid in teas from Ampelopsis grossedentata, Isodon serra and Hibiscus sabdariffa. Interestingly, theanine was detected in tea from Potentilla fruticosa (1.16±0.81 mg/g). Furthermore, the content of polyphenols in teas from A. grossedentata, Acer tataricum subsp. ginnala are significantly higher than those from Camellia tea; teas from I. serra, Pistacia chinensis and A. tataricum subsp. ginnala have remarkable antioxidant activities similar to the activities from green tea (44.23 μg/mL). Purine alkaloids (caffeine, theobromine and theophylline) were not detected in non-Camellia teas. The investigation suggest some non-Camellia teas may be great functional natural products with potential for prevention of chronic diseases and aging, by providing with abundant polyphenols, antioxidants and specific FAAs.
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Key Words
- AABA, α-aminobutyric acid
- AMQ, 6-aminoquinoline
- AQC, 6-aminoquinolyl-N-hydrosysuccinimidyl carbamate
- AccQ, 6-aminoquinolyl-N-hydroxysuccinimidyl carbamate
- Amino acids
- Antioxidant activity
- DPPH, 1,1-diphenyl-2-picryl-hydrazyl
- EA, essential amino acid
- EDTA, ethylene diamine tetraacetic acid
- F-C, Folin-Ciocalteu
- FAAs, free amino acids
- GABA, γ-aminobutyric acid
- GAE, gallic acid equivalents
- HCA, hierarchical cluster analysis
- HEA, half-essential amino acid
- NEA, non-essential amino acid
- Non-Camellia tea
- PCA, principal component analysis
- Polyphenols
- Purine alkaloids
- RSD, relative standard deviation
- Thea, theanine
- UHPLC, ultra-high performance liquid chromatography
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Affiliation(s)
- Wu Bi
- Institute of Medicinal Plant Development, Chinese Academy of Medical Science, Peking Union Medical College, Beijing 100193, China
- Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Ministry of Education, Beijing 100193, China
| | - Chunnian He
- Institute of Medicinal Plant Development, Chinese Academy of Medical Science, Peking Union Medical College, Beijing 100193, China
- Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Ministry of Education, Beijing 100193, China
- Corresponding authors. Tel./fax: +86 10 57833166.
| | - Yunyun Ma
- Institute of Medicinal Plant Development, Chinese Academy of Medical Science, Peking Union Medical College, Beijing 100193, China
- Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Ministry of Education, Beijing 100193, China
| | - Jie Shen
- Institute of Medicinal Plant Development, Chinese Academy of Medical Science, Peking Union Medical College, Beijing 100193, China
- Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Ministry of Education, Beijing 100193, China
| | | | - Yong Peng
- Institute of Medicinal Plant Development, Chinese Academy of Medical Science, Peking Union Medical College, Beijing 100193, China
- Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Ministry of Education, Beijing 100193, China
| | - Peigen Xiao
- Institute of Medicinal Plant Development, Chinese Academy of Medical Science, Peking Union Medical College, Beijing 100193, China
- Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Ministry of Education, Beijing 100193, China
- Corresponding authors. Tel./fax: +86 10 57833166.
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Yeh YL, Tsai HI, Cheng SM, Pai P, Ho TJ, Chen RJ, Lai CH, Huang PJ, Padma VV, Huang CY. Mechanism of Taiwan Mingjian Oolong Tea to Inhibit Isoproterenol-Induced Hypertrophy and Apoptosis in Cardiomyoblasts. THE AMERICAN JOURNAL OF CHINESE MEDICINE 2016; 44:77-86. [DOI: 10.1142/s0192415x16500051] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
This study investigates the cardio-protective effect of Nos. 1 and 5 extracts from Taiwan Mingjian Oolong Tea on H9c2 cardiomyoblast cells treated with isoproterenol (ISO). Treatment with Nos. 1 and 5 extracts increased cell viability and blocked apoptosis in ISO exposed H9c2 cells. Moreover, Nos. 1 and 5 extracts blocked hypertrophy markers like G[Formula: see text]s, calcineurin, NFATc3, and BNP, thereby increasing cell proliferation markers -PI3K and AKT in a dose dependent manner. In contrast, apoptotic proteins, such as caspase-3 and cytochrome c were decreased in H9c2 cells treated with Nos. 1 and 5 extracts. We confirmed that the protective effect of No. 1 extract was partially mediated through the expression of ERK and p38, however, the No. 5 extract showed a protective effect via the ERK, JNK, and p38 pathways. This evidence provides new insights into the pharmacological role and therapeutic mechanism of Taiwan Mingjian Oolong Tea in heart diseases.
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Affiliation(s)
- Yu-Lan Yeh
- Department of Pathology, Changhua Christian Hospital, Changhua, Taiwan
- Department of Medical Technology, Jen-Teh Junior College of Medicine, Nursing and Management, Miaoli, Taiwan
| | - Hsiang-I Tsai
- Graduate Institute of Basic Medical Science, Taichung, Taiwan
| | - Shiu-Min Cheng
- Department of Psychology, Asia University, Taichung, Taiwan
| | - Peiying Pai
- Division of Cardiology, China Medical University Hospital, Taichung, Taiwan
| | - Tsung-Jung Ho
- School of Chinese Medicine, China Medical University, Taichung, Taiwan
- Chinese Medicine Department, China Medical University Beigang Hospital, Taiwan
| | - Ray-Jade Chen
- Department of Surgery, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Chao-Hung Lai
- Division of Cardiology, Department of Internal Medicine, Armed Force Taichung General Hospital, Taichung, Taiwan
| | - Pei-Jane Huang
- Department of Health and Nutrition Biotechnology, Asia University, Taichung, Taiwan
| | - V. Vijaya Padma
- Department of Biotechnology, Bharathiar University, Coimbatore 641046, India
| | - Chih-Yang Huang
- Graduate Institute of Basic Medical Science, Taichung, Taiwan
- Department of Health and Nutrition Biotechnology, Asia University, Taichung, Taiwan
- Chinese Medicine Department, China Medical University Beigang Hospital, Taiwan
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29
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Kimutai S, Wanyoko J, Kinyanjui T, Karori S, Muthiani A, Wachira F. Determination of Residual Catechins, Polyphenolic Contents and Antioxidant Activities of Developed Theaflavin-3,3’-Digallate Rich Black Teas. ACTA ACUST UNITED AC 2016. [DOI: 10.4236/fns.2016.73020] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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30
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Patel S, Shende S, Arora S, Singh RRB, Rastogi S, Singh Rawat AK. Antioxidant potential of herbs and spices during deep frying of ghee. INT J DAIRY TECHNOL 2014. [DOI: 10.1111/1471-0307.12131] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Shriyesh Patel
- Dairy Chemistry Division; National Dairy Research Institute; Karnal-132001 Haryana India
| | - Sneha Shende
- Dairy Chemistry Division; National Dairy Research Institute; Karnal-132001 Haryana India
| | - Sumit Arora
- Dairy Chemistry Division; National Dairy Research Institute; Karnal-132001 Haryana India
| | - Ram Ran Bijoy Singh
- Dairy Chemistry Division; National Dairy Research Institute; Karnal-132001 Haryana India
| | - Subha Rastogi
- CSIR-National Botanical Research Institute; Post box no. 436 Lucknow-226001 UP India
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31
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Chen Z, Mei X, Jin Y, Kim EH, Yang Z, Tu Y. Optimisation of supercritical carbon dioxide extraction of essential oil of flowers of tea (Camellia sinensis L.) plants and its antioxidative activity. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2014; 94:316-321. [PMID: 23754602 DOI: 10.1002/jsfa.6260] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/08/2013] [Revised: 06/04/2013] [Accepted: 06/10/2013] [Indexed: 06/02/2023]
Abstract
BACKGROUND To extract natural volatile compounds from tea (Camellia sinensis) flowers without thermal degradation and residue of organic solvents, supercritical fluid extraction (SFE) using carbon dioxide was employed to prepare essential oil of tea flowers in the present study. Four important parameters--pressure, temperature, static extraction time, and dynamic extraction time--were selected as independent variables in the SFE. RESULTS The optimum extraction conditions were the pressure of 30 MPa, temperature of 50°C, static time of 10 min, and dynamic time of 90 min. Based on gas chromatography-mass spectrometry analysis, 59 compounds, including alkanes (45.4%), esters (10.5%), ketones (7.1%), aldehydes (3.7%), terpenes (3.7%), acids (2.1%), alcohols (1.6%), ethers (1.3%) and others (10.3%) were identified in the essential oil of tea flowers. Moreover, the essential oil of tea flowers showed relatively stronger DPPH radical scavenging activity than essential oils of geranium and peppermint, although its antioxidative activity was weaker than those of essential oil of clove, ascorbic acid, tert-butylhydroquinone, and butylated hydroxyanisole. CONCLUSION Essential oil of tea flowers using SFE contained many types of volatile compounds and showed considerable DPPH scavenging activity. The information will contribute to the future application of tea flowers as raw materials in health-care food and food flavour industries.
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Affiliation(s)
- Zhenchun Chen
- Department of Tea Science, Zhejiang University, 866 Yuhangtang Road, Hangzhou, 310058, China
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Lee J, Chambers DH, IV EC, Adhikari K, Yoon Y. Volatile aroma compounds in various brewed green teas. Molecules 2013; 18:10024-41. [PMID: 23966086 PMCID: PMC6270648 DOI: 10.3390/molecules180810024] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2013] [Revised: 08/07/2013] [Accepted: 08/14/2013] [Indexed: 11/21/2022] Open
Abstract
This study identifies and semi-quantifies aroma volatiles in brewed green tea samples. The objectives of this study were to identify using a gas chromatograph-mass spectrometer (GC-MS) paired with a headspace solid-phase micro-extraction (HS-SPME) the common volatile compounds that may be responsible for aroma/flavor of the brewed liquor of a range of green tea samples from various countries as consumed and to determine if green teas from the same region have similarities in volatile composition when green tea samples are prepared for consumption. Twenty-four green tea samples from eight different countries were brewed as recommended for consumer brewing. The aroma volatiles were extracted by HS-SPME, separated on a gas chromatograph and identified using a mass spectrometer. Thirty-eight compounds were identified and the concentrations were semi-quantified. The concentrations were lower than those reported by other researchers, probably because this research examined headspace volatiles from brewed tea rather than solvent extraction of leaves. No relationship to country of origin was found, which indicates that other factors have a greater influence than country of origin on aroma.
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Affiliation(s)
- Jeehyun Lee
- Department of Food Science and Nutrition, Pusan National University, 30 Jangjeon-Dong, Geumjeoung-Ku, Busan 609 735, Korea; E-Mail:
| | - Delores H. Chambers
- Sensory Analysis Center, Kansas State University, Department of Human Nutrition, Manhattan, KS 66506-1407, USA; E-Mails: (E.C.); (K.A.)
- Author to whom correspondence should be addressed; E-Mail: ; Tel.: +1-785-532-0162; Fax: +1-785-532-0176
| | - Edgar Chambers IV
- Sensory Analysis Center, Kansas State University, Department of Human Nutrition, Manhattan, KS 66506-1407, USA; E-Mails: (E.C.); (K.A.)
| | - Koushik Adhikari
- Sensory Analysis Center, Kansas State University, Department of Human Nutrition, Manhattan, KS 66506-1407, USA; E-Mails: (E.C.); (K.A.)
| | - Youngmo Yoon
- Sensient Flavors LLC, 5600 West Raymond St., Indianapolis, IN 46241, USA; E-Mail:
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Du GJ, Zhang Z, Wen XD, Yu C, Calway T, Yuan CS, Wang CZ. Epigallocatechin Gallate (EGCG) is the most effective cancer chemopreventive polyphenol in green tea. Nutrients 2012. [PMID: 23201840 PMCID: PMC3509513 DOI: 10.3390/nu4111679] [Citation(s) in RCA: 317] [Impact Index Per Article: 26.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Green tea is a popular drink consumed daily by millions of people around the world. Previous studies have shown that some polyphenol compounds from green tea possess anticancer activities. However, systemic evaluation was limited. In this study, we determined the cancer chemopreventive potentials of 10 representative polyphenols (caffeic acid, CA; gallic acid, GA; catechin, C; epicatechin, EC; gallocatechin, GC; catechin gallate, CG; gallocatechin gallate, GCG; epicatechin gallate, ECG; epigallocatechin, EGC; and epigallocatechin gallate, EGCG), and explored their structure-activity relationship. The effect of the 10 polyphenol compounds on the proliferation of HCT-116 and SW-480 human colorectal cancer cells was evaluated using an MTS assay. Cell cycle distribution and apoptotic effects were analyzed by flow cytometry after staining with propidium iodide (PI)/RNase or annexin V/PI. Among the 10 polyphenols, EGCG showed the most potent antiproliferative effects, and significantly induced cell cycle arrest in the G1 phase and cell apoptosis. When the relationship between chemical structure and anticancer activity was examined, C and EC did not show antiproliferative effects, and GA showed some antiproliferative effects. When C and EC esterified with GA to produce CG and ECG, the antiproliferative effects were increased significantly. A similar relationship was found between EGC and EGCG. The gallic acid group significantly enhanced catechin’s anticancer potential. This property could be utilized in future semi-synthesis of flavonoid derivatives to develop novel anticancer agents.
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Affiliation(s)
- Guang-Jian Du
- Tang Center for Herbal Medicine Research, University of Chicago, Chicago, IL 60637, USA; (G.-J.D.); (Z.Z.);
(X.-D.W); (C.Y.); (T.C.);
(C.-S.Y.)
- Department of Anesthesia and Critical Care, University of Chicago, Chicago, IL 60637, USA
| | - Zhiyu Zhang
- Tang Center for Herbal Medicine Research, University of Chicago, Chicago, IL 60637, USA; (G.-J.D.); (Z.Z.);
(X.-D.W); (C.Y.); (T.C.);
(C.-S.Y.)
- Department of Anesthesia and Critical Care, University of Chicago, Chicago, IL 60637, USA
| | - Xiao-Dong Wen
- Tang Center for Herbal Medicine Research, University of Chicago, Chicago, IL 60637, USA; (G.-J.D.); (Z.Z.);
(X.-D.W); (C.Y.); (T.C.);
(C.-S.Y.)
- Department of Anesthesia and Critical Care, University of Chicago, Chicago, IL 60637, USA
| | - Chunhao Yu
- Tang Center for Herbal Medicine Research, University of Chicago, Chicago, IL 60637, USA; (G.-J.D.); (Z.Z.);
(X.-D.W); (C.Y.); (T.C.);
(C.-S.Y.)
- Department of Anesthesia and Critical Care, University of Chicago, Chicago, IL 60637, USA
| | - Tyler Calway
- Tang Center for Herbal Medicine Research, University of Chicago, Chicago, IL 60637, USA; (G.-J.D.); (Z.Z.);
(X.-D.W); (C.Y.); (T.C.);
(C.-S.Y.)
- Department of Anesthesia and Critical Care, University of Chicago, Chicago, IL 60637, USA
| | - Chun-Su Yuan
- Tang Center for Herbal Medicine Research, University of Chicago, Chicago, IL 60637, USA; (G.-J.D.); (Z.Z.);
(X.-D.W); (C.Y.); (T.C.);
(C.-S.Y.)
- Department of Anesthesia and Critical Care, University of Chicago, Chicago, IL 60637, USA
- Committee on Clinical Pharmacology and Pharmacogenomics, University of Chicago, Chicago, IL 60637, USA
| | - Chong-Zhi Wang
- Tang Center for Herbal Medicine Research, University of Chicago, Chicago, IL 60637, USA; (G.-J.D.); (Z.Z.);
(X.-D.W); (C.Y.); (T.C.);
(C.-S.Y.)
- Department of Anesthesia and Critical Care, University of Chicago, Chicago, IL 60637, USA
- Author to whom correspondence should be addressed; ; Tel.: +1-773-702-0166; Fax: +1-773-834-0601
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Wang A, Zhang J, Li Z. Correlation of volatile and nonvolatile components with the total antioxidant capacity of tartary buckwheat vinegar: Influence of the thermal processing. Food Res Int 2012. [DOI: 10.1016/j.foodres.2012.07.020] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Anti-inflammatory effects of a polyphenols-rich extract from tea (Camellia sinensis) flowers in acute and chronic mice models. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2012; 2012:537923. [PMID: 22900128 PMCID: PMC3413976 DOI: 10.1155/2012/537923] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/25/2012] [Accepted: 06/18/2012] [Indexed: 01/19/2023]
Abstract
While beneficial health properties of tea leaves have been extensively studied, less attention is paid to the flowers of tea. In this study, the anti-inflammatory effects of hot water extract of tea (Camellia sinensis) flowers were investigated. Pharmacological studies found that administration of tea flowers extract (TFE) could effectively inhibit croton oil-induced ear edema and carrageenin-induced paw edema. Furthermore, administration of TFE also protected against Propionibacterium acnes (P. ances) plus lipopolysaccharide-(LPS-) induced liver inflammation by reversing the histologic damage and plasma alanine aminotransferase (ALT) increase. Moreover, the levels of nitric oxide (NO), tumor necrosis factor-(TNF)-α and interleukin-(IL-) 1β mRNA in mouse liver were markedly suppressed after treatment with TFE in mice with immunological liver inflammation. These results indicated that tea flowers had potent anti-inflammatory effects on acute and immunological inflammation in vivo, and may be used as a functional natural food.
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Misharina TA, Alinkina ES, Fatkulina LD, Vorobyova AK, Medvedeva IB, Burlakova EB. Influence of the composition of essential oils on their antioxidant and antiradical properties. APPL BIOCHEM MICRO+ 2011. [DOI: 10.1134/s0003683812010103] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Naşcu-Briciu RD, Cobzac SC, Baciu S. Optimum Ultrasound Assisted Extraction Conditions of Some Flavonoids from Green Tea Leaves. Control Quality of Green Tea Product by TLC Fingerprinting. ANAL LETT 2011. [DOI: 10.1080/00032719.2011.582549] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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Variations of antioxidant properties and NO scavenging abilities during fermentation of tea. Int J Mol Sci 2011; 12:4574-90. [PMID: 21845097 PMCID: PMC3155370 DOI: 10.3390/ijms12074574] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2011] [Revised: 06/27/2011] [Accepted: 07/06/2011] [Indexed: 01/31/2023] Open
Abstract
Tea is known as one of the most popular beverages in the world, which is believed to be beneficial for health. The main components in tea will change a lot depending on the different processes of fermentation, and thus the effects of different teas on human health may differ. The aim of this study is to explore the varied abilities of reactive oxygen species (ROS) and nitric oxide (NO) scavenging during the fermentation of tea. In this study, we conducted the in vitro experiments which involved some reaction systems indicating the abilities of scavenging ROS and NO. We also investigated the effects of tea and their components (catechins, theabrownins, caffeine) on the intracellular levels of ROS and NO, using Raw 264.7 cells as the model. We found that regardless of whether it was out of cell system or in Raw 264.7 cells, the abilities of scavenging ROS would decrease during the fermentation of tea. Further, the post-fermented pu-erh tea showed the best effect on inhibiting the lipopolysaccharide (LPS)-induced production of NO. These findings indicated that the fermentation process caused a change of the components which might be due to the changes of their antioxidant properties and NO scavenging abilities.
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Misharina T, Terenina M, Krikunova N. Inhibition of 2-Hexenal Autooxidation by Essential Oils from Clove Bud, Laurel, Cardamom, Nutmeg and Mace. CHEMISTRY & CHEMICAL TECHNOLOGY 2011. [DOI: 10.23939/chcht05.02.161] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Brewer M. Natural Antioxidants: Sources, Compounds, Mechanisms of Action, and Potential Applications. Compr Rev Food Sci Food Saf 2011. [DOI: 10.1111/j.1541-4337.2011.00156.x] [Citation(s) in RCA: 1003] [Impact Index Per Article: 77.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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Chen YL, Duan J, Jiang YM, Shi J, Peng L, Xue S, Kakuda Y. Production, Quality, and Biological Effects of Oolong Tea (Camellia sinensis). FOOD REVIEWS INTERNATIONAL 2010. [DOI: 10.1080/87559129.2010.518294] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Yu Long Chen
- a South China Botanical Garden , Chinese Academy of Sciences , Guangzhou , The People's Republic of China
| | - Jun Duan
- a South China Botanical Garden , Chinese Academy of Sciences , Guangzhou , The People's Republic of China
| | - Yue Ming Jiang
- a South China Botanical Garden , Chinese Academy of Sciences , Guangzhou , The People's Republic of China
| | - John Shi
- b Guelph Food Research Center , Agriculture and Agri-Food Canada , Guelph , Ontario , Canada
| | - Litao Peng
- c College of Food Science and Technology , Huazhong Agricultural University , Wuhan , The People's Republic of China
| | - Sophia Xue
- b Guelph Food Research Center , Agriculture and Agri-Food Canada , Guelph , Ontario , Canada
| | - Yukio Kakuda
- d Department of Food Science , University of Guelph , Guelph , Ontario , Canada
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Chen H, Qu Z, Fu L, Dong P, Zhang X. Physicochemical properties and antioxidant capacity of 3 polysaccharides from green tea, oolong tea, and black tea. J Food Sci 2010; 74:C469-74. [PMID: 19723184 DOI: 10.1111/j.1750-3841.2009.01231.x] [Citation(s) in RCA: 115] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
UNLABELLED Three polysaccharide-rich fractions named GTPS, OTPS, and BTPS were isolated from green tea, oolong tea, and black tea, respectively. Chemical characteristics, glycosidase inhibitory effects, and antioxidant properties of the 3 fractions were compared. Monosaccharides of GTPS were composed of D-rhamnose, L-arabinose, D-xylose, D-mannose, D-galactose, and D-glucose. But there were no xylose and mannose detected in OTPS and BTPS. The molecular weight distributions were decreased from 9.2 to 251.5 KDa to 3.8 to 32.7 KDa with the fermentation of the tea from green tea to black tea. BTPS showed the highest alpha-glucosidase inhibitory activity, antioxidant activities on hydroxyl radicals and DPPH radicals. The differences in antioxidant activities and glycosidase inhibitory properties among the 3 polysaccharide-rich fractions appeared to be related to differences in monosaccharide composition and molecular weight distribution of the polysaccharide. PRACTICAL APPLICATION Diabetes mellitus (DM) is one of the primary threats to human health due to its increasing prevalence, chronic course, and disabling complications. Control of postprandial hyperglycemia and inhibition of oxidative stress are suggested to be important in the treatment of diabetes. Many efforts had been made to search for effective and safe alpha-glucosidase inhibitors and antioxidants from natural materials to develop a physiological functional food or lead compounds for curing diabetes. Coarse tea was used to cure diabetics in people in China and Japan. The hypoglycemic activity increased with the contents of polysaccharide in coarse tea. Many studies have focused on the hypoglycemic activities of tea polysaccharides, but little is known about the glycosidase inhibitory effects of tea polysaccharide. The aim of this study was to find a tea polysaccharide with the best potential for exploitation in curing diabetes.
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Affiliation(s)
- Haixia Chen
- Tianjin Key Laboratory for Modern Drug Delivery & High-Efficiency, School of Pharmaceutical Science and Technology, Tianjin Univ., Tianjin, 300072, P.R. China.
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Reyes-Munguía A, Azúara-Nieto E, Beristain CI, Cruz-Sosa F, Vernon-Carter EJ. Propiedades antioxidantes del maguey morado (Rhoeo discolor) Purple maguey (Rhoeo discolor) antioxidant properties. CYTA - JOURNAL OF FOOD 2009. [DOI: 10.1080/19476330903010177] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Friedman M, Levin CE, Choi SH, Lee SU, Kozukue N. Changes in the Composition of Raw Tea Leaves from the Korean Yabukida Plant during High-Temperature Processing to Pan-Fried Kamairi-Cha Green Tea. J Food Sci 2009; 74:C406-12. [DOI: 10.1111/j.1750-3841.2009.01185.x] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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Moon JK, Shibamoto T. Antioxidant assays for plant and food components. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2009; 57:1655-66. [PMID: 19182948 DOI: 10.1021/jf803537k] [Citation(s) in RCA: 456] [Impact Index Per Article: 30.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
Recently, research on natural antioxidants has become increasingly active in various fields. Accordingly, numerous articles on natural antioxidants, including polyphenols, flavonoids, vitamins, and volatile chemicals, have been published. Assays developed to evaluate the antioxidant activity of plants and food constituents vary. Therefore, to investigate the antioxidant activity of chemical(s), choosing an adequate assay based on the chemical(s) of interest is critical. There are two general types of assays widely used for different antioxidant studies. One is an assay associated with lipid peroxidations, including the thiobarbituric acid assay (TBA), malonaldehyde/high-performance liquid chromatography (MA/HPLC) assay, malonaldehyde/gas chromatography (MA/GC) assay, beta-carotene bleaching assay, and conjugated diene assay. Other assays are associated with electron or radical scavenging, including the 2,2-diphenyl-1-picrylhydrazyl (DPPH) assay, 2,2'-azinobis(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS) assay, ferric reducing/antioxidant power (FRAP) assay, ferrous oxidation-xylenol orange (FOX) assay, ferric thiocyanate (FTC) assay, and aldehyde/carboxylic acid (ACA) assay. In this review, assays used recently were selected for extended discussion, including discussion of the mechanisms underlying each assay and its application to various plants and foods.
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Affiliation(s)
- Joon-Kwan Moon
- Department of Environmental Toxicology, University of California, Davis, CA 95616, USA
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Tanabe N, Suzuki H, Aizawa Y, Seki N. Consumption of green and roasted teas and the risk of stroke incidence: results from the Tokamachi-Nakasato cohort study in Japan. Int J Epidemiol 2008; 37:1030-40. [DOI: 10.1093/ije/dyn211] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
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Zhu M, Li E, He H. Determination of Volatile Chemical Constitutes in Tea by Simultaneous Distillation Extraction, Vacuum Hydrodistillation and Thermal Desorption. Chromatographia 2008. [DOI: 10.1365/s10337-008-0732-1] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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