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Xia Y, Wang X, Sun H, Huang X. Proton-coupled electron transfer of catechin in tea wine: the enhanced mechanism of anti-oxidative capacity. RSC Adv 2021; 11:39985-39993. [PMID: 35494161 PMCID: PMC9044537 DOI: 10.1039/d1ra07769d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2021] [Accepted: 11/30/2021] [Indexed: 12/13/2022] Open
Abstract
Tea wine is a Chinese traditional alcoholic drink made by cereal and tea leaves. It is rich in tea polyphenols, caffeine, amino acids, and protons and possesses various healthcare functions. In this work, electrochemical methods, as well as density functional theory (DFT) calculations, were adopted to reveal the proton-coupled electron-transfer process of catechin in tea wine. The electrochemical results showed that the catechin preferred hydrogen-bonding with ethanol and formed molecular clusters. Thus, the direct electron-transfer process of catechin changed to proton-coupled electron transfer. This procedure reduced the energy barrier of the redox reaction and enhanced the anti-oxidative capacity. Subsequently, DFT calculations were employed to explore the bond length, bond energy, and HOMO-LUMO energy gap of catechin, which confirmed the above-mentioned mechanism. Our work offers some positive value for the scientific promotion of traditional food and a greater understanding of the health mechanisms in terms of chemistry.
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Affiliation(s)
- Yirong Xia
- School of Food and Chemical Engineering, Shaoyang University Shaoyang 422000 China
| | - Xintong Wang
- School of Food and Chemical Engineering, Shaoyang University Shaoyang 422000 China
| | - Hechen Sun
- Shanxian Central Hospital Heze 274300 China
| | - Ximing Huang
- School of Food and Chemical Engineering, Shaoyang University Shaoyang 422000 China
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Krstić M, Stupar M, Đukić-Ćosić D, Baralić K, Mračević SĐ. Health risk assessment of toxic metals and toxigenic fungi in commercial herbal tea samples from Belgrade, Serbia. J Food Compost Anal 2021. [DOI: 10.1016/j.jfca.2021.104159] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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53
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Areo OM, Njobeh PB. Risk assessment of heavy metals in rooibos (Aspalathus linearis) tea consumed in South Africa. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:59687-59695. [PMID: 34145539 DOI: 10.1007/s11356-021-14968-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2021] [Accepted: 06/14/2021] [Indexed: 06/12/2023]
Abstract
A total of 80 rooibos tea samples from a range of brands were purchased from various registered retail shops in South Africa. The samples were bought during 2019 winter (40) and summer (40) period which are classified as 6 natural rooibos, 18 herbal rooibos samples, and 16 flavor rooibos samples and subjected for heavy metal analysis such as chromium (Cr), iron (Fe), arsenic (As), cadmium (Cd), and lead (Pb) using inductively coupled plasma mass spectrometer (ICP-MS). Human health risks were determined by estimating the daily intake non-cancer hazard quotient (THQ) and hazard index (HI) via oral exposure to toxic elements based on daily tea consumption. The concentration range of the determined heavy metals in rooibos tea samples were as follows: Cr (0.17-11.98 mg/kg), Fe (31-450 mg/kg), As (ND-0.51 mg/kg), Cd (0.09-0.17 mg/kg), and Pb (0.06-2.73 mg/kg). Cr was found in higher amount when compared to the World Health Organization (WHO) permissive limit (1.3 mg/kg). The concentrations of all studied heavy metals during winter and summer period were compared using two-way Anova, and no significant differences (p = 0.832) were observed for the two seasons. Both the target risk quotient (THQ) and the hazard index (HI) levels in all analyzed tea were well below 1, implying that intake of rooibos tea with analyzed heavy metals should not cause a threat to human health. On the other hand, the continuous intake due to the high concentrations of trace metals such as Cr may pose a serious chronic health risk due to accumulation in body tissues over time. The study, therefore, suggests constant monitoring of these heavy metals in teas in order to limit the risk of exceeding the permissive limits.
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Affiliation(s)
- Oluwaseun Mary Areo
- Department of Biotechnology and Food Technology, Faculty of Science, University of Johannesburg, Doornfontein Campus, P.O. Box 17011, Doornfontein, Gauteng, 2028, South Africa
| | - Patrick Berka Njobeh
- Department of Biotechnology and Food Technology, Faculty of Science, University of Johannesburg, Doornfontein Campus, P.O. Box 17011, Doornfontein, Gauteng, 2028, South Africa.
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Li W, Cheng H, Mu Y, Xu A, Ma B, Wang F, Xu P. Occurrence, accumulation, and risk assessment of trace metals in tea (Camellia sinensis): A national reconnaissance. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 792:148354. [PMID: 34146808 DOI: 10.1016/j.scitotenv.2021.148354] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/17/2021] [Revised: 06/02/2021] [Accepted: 06/05/2021] [Indexed: 06/12/2023]
Abstract
Accumulation of potentially toxic elements in soil and tea leaves is a particular concern for tea consumers worldwide. However, the contents of potentially toxic elements and their potential health and ecological risks in Chinese tea gardens have rarely been investigated on the national scale. In this study, we collected 225 paired soil and tea plant samples from 45 tea gardens in 15 provinces of China to survey the current risk of potentially toxic element accumulation in Chinese tea gardens. The results suggest that the average contents of most trace metals in rhizosphere soils meet the risk control standard for agricultural land in China. However, the mean contents of As, Cr, Cd, Zn, Cu, and Ni in rhizosphere soils were 1.94, 2.14, 1.23, 1.15, 1.18, and 1.19 times their corresponding background soil values in China. Cd had the highest geo-accumulation index, followed by As, Zn, Cr, Ni, Cu, Pb, and Mn in rhizosphere soils. Nearly 2.22% and 4.44% of soils were moderately to heavily contaminated with As and Cd, respectively. The risk index ranged from 18.0 to 292, with an average value of 90.0, indicating low to moderate ecological risk in Chinese tea gardens. This is the first national-scale reconnaissance of trace metals in tea across China. Our findings provide a useful reference for ensuring the quality and safety of tea production and mitigating the risk of toxic element accumulation in tea.
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Affiliation(s)
- Wenbing Li
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 311121, China
| | - Haiyan Cheng
- Department of Tea Science, Zhejiang University, Hangzhou 310058, China
| | - Yinjun Mu
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 311121, China
| | - Anan Xu
- Department of Tea Science, Zhejiang University, Hangzhou 310058, China
| | - Bin Ma
- College of Environmental and Natural Resource Sciences, Zhejiang Provincial Key Laboratory of Agricultural Resources and Environment, Zhejiang University, Hangzhou 310058, China
| | - Fan Wang
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 311121, China.
| | - Ping Xu
- Department of Tea Science, Zhejiang University, Hangzhou 310058, China.
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55
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YAO Q, LIN Q, YAN SA, HUANG M, CHEN L. Dietary risk assessment of fluoride, lead, chromium, and cadmium through consumption of Tieguanyin tea and white tea. FOOD SCIENCE AND TECHNOLOGY 2021. [DOI: 10.1590/fst.69220] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- Qinghua YAO
- Fujian Academy of Agricultural Sciences, China
| | - Qiu LIN
- Fujian Academy of Agricultural Sciences, China
| | - Sun-an YAN
- Fujian Academy of Agricultural Sciences, China
| | | | - Lihua CHEN
- Fujian Academy of Agricultural Sciences, China
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56
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Shang A, Li J, Zhou DD, Gan RY, Li HB. Molecular mechanisms underlying health benefits of tea compounds. Free Radic Biol Med 2021; 172:181-200. [PMID: 34118386 DOI: 10.1016/j.freeradbiomed.2021.06.006] [Citation(s) in RCA: 45] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Revised: 05/06/2021] [Accepted: 06/07/2021] [Indexed: 12/22/2022]
Abstract
Tea is one of the three most widely consumed beverages in the world, not only because of its unique flavor but also due to its various health benefits. The bioactive components in tea, such as polyphenols, polysaccharides, polypeptides, pigments, and alkaloids, are the main contributors to its health functions. Based on epidemiological surveys, the consumption of tea and its compounds in daily life has positive effects on cardiovascular diseases, cancers, hepatopathy, obesity, and diabetes mellitus. In experimental studies, the antioxidant, anti-inflammatory, anti-cancer, anti-obesity, cardiovascular protective, liver protective, and hypoglycemic activities of tea and the related mechanisms of action have been widely investigated. The regulation of several classical signaling pathways, such as nuclear factor-κB (NF-κB), AMP activated protein kinase (AMPK), and wingless/integrated (Wnt) signaling, is involved. Clinical trials have also demonstrated the potential of tea products to be applied as dietary supplements and natural medicines. In this paper, we reviewed and discussed the recent literature on the health benefits of tea and its compounds, and specifically explored the molecular mechanisms involved.
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Affiliation(s)
- Ao Shang
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Department of Nutrition, School of Public Health, Sun Yat-Sen University, Guangzhou 510080, China.
| | - Jiahui Li
- School of Science, The Hong Kong University of Science and Technology, Hong Kong 999077, China.
| | - Dan-Dan Zhou
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Department of Nutrition, School of Public Health, Sun Yat-Sen University, Guangzhou 510080, China.
| | - Ren-You Gan
- Research Center for Plants and Human Health, Institute of Urban Agriculture, Chinese Academy of Agricultural Sciences, Chengdu 610213, China.
| | - Hua-Bin Li
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Department of Nutrition, School of Public Health, Sun Yat-Sen University, Guangzhou 510080, China.
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Relationship between Total Phenolic Content, Antioxidant Capacity, Fe and Cu Content from Tea Plant Samples at Different Brewing Times. Processes (Basel) 2021. [DOI: 10.3390/pr9081311] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
The purpose of this study was to investigate the antioxidant capacity of different tea plant: mint, linden, chamomile, St. John’s wort, green and black tea in relation to total phenolic content. The antioxidant capacity of the tea infusions at different brewing times was determined using DPPH assay while the total phenolic content (TPC) was assessed using the modified Folin-Ciocalteu method. The results showed that there were significant statistical differences in antioxidant capacity depending on infusion time, according to one-way ANOVA analysis. Leaves used as components of tea infusions were analyzed by FAAS for their content of iron and copper in the dry product and in the infusion. The correlation between TPC and DPPH capacity of tea plant infusions was evaluated by Pearson correlation matrix. Total phenolics compounds content was positively and significantly correlated with DPPH capacity for all infusions time. Significant correlation was observed between TPC and the copper concentration (p < 0.05). Consequently, the correlations between the physicochemical parameters, TPC, DPPH capacity, Fe and Cu content suggested that the TPC may be a good indicator of the DPPH capacity in the tea infusions and also, suggested the influence of antioxidant compounds on mineral bioavailability.
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58
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Riddell JK, Malin AJ, McCague H, Flora DB, Till C. Urinary Fluoride Levels among Canadians with and without Community Water Fluoridation. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2021; 18:6203. [PMID: 34201160 PMCID: PMC8226595 DOI: 10.3390/ijerph18126203] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/17/2021] [Revised: 06/04/2021] [Accepted: 06/06/2021] [Indexed: 11/17/2022]
Abstract
Drinking water is a major source of dietary fluoride intake in communities with water fluoridation. We examined the association between urinary fluoride adjusted for specific gravity (UFSG) and tap water fluoride levels, by age and sex, among individuals living in Canada. Participants included 1629 individuals aged 3 to 79 years from Cycle 3 (2012-2013) of the Canadian Health Measures Survey. We used multiple linear regression to estimate unique associations of tap water fluoride levels, age, sex, ethnicity, body mass index (BMI), use of fluoride-containing dental products, smoking in the home, and tea consumption with UFSG. UFSG concentration was significantly higher among participants who received fluoridated drinking water (mean = 1.06 mg/L, standard deviation = 0.83) than among those who did not (M = 0.58 mg/L, SD = 0.47), p < 0.01. UFSG increased over adulthood (ages 19 to 79). Higher UFSG concentration was associated with being female, tea drinking, and smoking in the home. In conclusion, community water fluoridation is a major source of contemporary fluoride exposure for Canadians. Lifestyle factors including tea consumption, as well as demographic variables such as age and sex, also predict urinary fluoride level, and are therefore important factors when interpreting population-based fluoride biomonitoring data.
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Affiliation(s)
- Julia K. Riddell
- Department of Clinical Health Psychology, University of Manitoba, Winnipeg, MB N3E 3N4, Canada
| | - Ashley J. Malin
- Department of Preventive Medicine, Keck School of Medicine of USC, Los Angeles, CA 90032, USA;
| | - Hugh McCague
- Institute for Social Research, York University, Toronto, ON M3J 1P3, Canada; (H.M.); (D.B.F.)
| | - David B. Flora
- Institute for Social Research, York University, Toronto, ON M3J 1P3, Canada; (H.M.); (D.B.F.)
- Faculty of Health, York University, Toronto, ON M3J 1P3, Canada;
| | - Christine Till
- Faculty of Health, York University, Toronto, ON M3J 1P3, Canada;
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59
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Pokharel SS, Shen F, Parajulee MN, Wang Y, Chen F. Effects of elevated atmospheric CO2 concentration on tea quality and insect pests’ occurrences: A review. Glob Ecol Conserv 2021. [DOI: 10.1016/j.gecco.2021.e01553] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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60
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de Aragão Tannus C, de Souza Dias F, Santana FB, Dos Santos DCMB, Magalhães HIF, de Souza Dias F, de Freitas Santos Júnior A. Multielement Determination in Medicinal Plants and Herbal Medicines Containing Cynara scolymus L., Harpagophytum procumbens D.C., and Maytenus ilifolia (Mart.) ex Reiss from Brazil Using ICP OES. Biol Trace Elem Res 2021; 199:2330-2341. [PMID: 32789646 DOI: 10.1007/s12011-020-02334-1] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/17/2020] [Accepted: 08/05/2020] [Indexed: 12/11/2022]
Abstract
Worldwide, medicinal plants and herbal medicines are widely consumed. The aim of this study was to determine macro- (Ca, K, Mg, Na, and P) and microelements (Al, As, Ba, Cd, Co, Cr, Cu, Fe, Mn, Mo, Ni, Pb, Sb, Se, Si, Sn, Sr, V, and Zn) in medicinal plants and herbal medicines: "globe artichoke" - Cynara scolymus L., "devil's claw" - Harpagophytum procumbens D.C., and "espinheira santa" - Maytenus ilifolia (Mart) ex Reiss. Concentrations of 24 (essential and toxic potentially) elements in samples from Brazil were determined using a sequential optical emission spectrometer with inductively coupled plasma optical emission spectrometry (ICP OES) after acid digestion, assisted by microwave radiation. Principal component analysis (PCA) and hierarchical cluster analysis (HCA) were used to carry out an exploratory analysis of samples. The elements were quantified (in μg/g): Al (20.24-1261.64), Ba (18.90-63.18), Ca (2877.6-19,957.40), Cr (0.28-1.38), Cu (4.16-21.99), Fe (8.54-627.49), K (1786.12-32,297.19), Mg (505.82-6174.52), Mn (0.40-205.64), Na (1717.23-18,596.45), Ni (< LoQ-0.99), P (35.12-2899.91), Se (1.52-3.71), Sn (1.53-12.43), Sr (52.33-84.31), V (< LoQ-0.24), and Zn (2.60-30.56). As, Cd, Co, Mo, Pb, and Sb, in all the investigated samples, were found to be below the limit of detection (LoD) and quantification (LoQ) values of ICP OES. These medicinal plants and herbal medicines can be sources of Ca, K, Mg, Na, P, Cu, Fe, Mn, Se, and Zn. All samples showed considerable levels of Al. PCA and HCA showed that the samples separated into two large groups.
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Affiliation(s)
| | - Fernanda de Souza Dias
- Department of Life Sciences, Universidade do Estado da Bahia, Salvador, Bahia, 41195-001, Brazil
| | | | | | | | - Fábio de Souza Dias
- Science, Technology and Innovation Institute, Universidade Federal da Bahia, Camaçari, Bahia, 42809-000, Brazil
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61
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Liu HL, Meng Q, Zhao X, Ye YL, Tong HR. Inductively coupled plasma mass spectrometry (ICP-MS) and inductively coupled plasma optical emission spectrometer (ICP-OES)-based discrimination for the authentication of tea. Food Control 2021. [DOI: 10.1016/j.foodcont.2020.107735] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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62
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In vitro assessment of major and trace element bioaccessibility in tea samples. Talanta 2021; 225:122083. [PMID: 33592795 DOI: 10.1016/j.talanta.2021.122083] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2020] [Revised: 12/30/2020] [Accepted: 01/02/2021] [Indexed: 11/22/2022]
Abstract
Bioaccessibility of trace elements (Li, Be, Ti, Ga, Cu, Ag, Hg, Cd, Cs, Pt, Tl, Pb, As, Cr, Co, Ni, V, Se, Sn and Sb) and major elements (Rb, Ba, Al, Fe, Zn, Si, Ca, Mg, Mn, Mo, Sr, P and K) in tea infusions has been assessed using an in vitro dialyzability protocol. Gastric simulation (using pepsin solution) and intestinal simulation (using pancreatin and bile salts) were used to perform the in vitro digestion. ICP-MS, ICP-OES and FAES were used for elements determination in digested tea leaves, their infusions and the dialyzate fractions from tea infusions. Microwaves assisted acid digestion was used for the total element determination in tea leaves, while tea infusions were prepared by brewing tea leaves for 5 min in boiling water. The LODs for elements determined in tea leaves were in the range of 0.11-656 ng g-1 and 0.02-145.6 μg g-1 for trace and major elements, respectively. For elements' determination in tea infusions, the LODs were ranged between 0.23 and 399.9 ng L-1 for trace elements and 0.2-1248 μg L-1 for major elements. The LODs for the elements in the dialyzable fraction varied from 0.018 to 142 μg L-1. The accuracy of the total element determination was evaluated using certified reference materials (Tea Leaves INCT-TL-1 and Rye Grass). The analytical recoveries were also assessed for analyzed elements in digested tea leaves (95-114%) and their infusions (92-115%), showing good recoveries. Among the studied elements, K was the most abundant element in tea leaves and tea infusions in almost all samples, followed by Ca, Mg, and P. Zn, Cs, and K showed the highest dialyzability percentages up to 84%, 76%, and 54%, respectively, followed by Si and Ca and K that show moderate to high dialyzability percentages. The accuracy of the dialysis process was evaluated using a mass-balance study.
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63
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Mineral and trace element composition after digestion and leaching into matcha ice tea infusions (Camellia sinensis L.). J Food Compost Anal 2021. [DOI: 10.1016/j.jfca.2020.103792] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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64
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de Souza ID, Melo ESP, Nascimento VA, Pereira HS, Silva KRN, Espindola PR, Tschinkel PFS, Ramos EM, Reis FJM, Ramos IB, Paula FG, Oliveira KRW, Lima CD, Nunes ÂA, do Nascimento VA. Potential Health Risks of Macro- and Microelements in Commercial Medicinal Plants Used to Treatment of Diabetes. BIOMED RESEARCH INTERNATIONAL 2021; 2021:6678931. [PMID: 33869633 PMCID: PMC8032537 DOI: 10.1155/2021/6678931] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 12/12/2020] [Revised: 03/03/2021] [Accepted: 03/22/2021] [Indexed: 02/06/2023]
Abstract
Information on the content of medicinal plants used in the treatment of diabetes is scarce in the literature. The objectives of this study were to determine the levels of macroelements and microelements in three different medicinal plant species including the dry samples and teas from Bauhinia forficata, Eleusine Indica, and Orthosiphon stamineus and assess the human health risks of ingestion of the tea. The content of the dry samples and teas was obtained using the technique of inductively coupled plasma optical emission spectrometry (ICP OES) after microwave digestion procedure. The hazard quotient (HQ) method was used to access the human health risks posed by heavy metal through tea consumption. The results revealed the presence of K, Mg, Na, P, Al, Fe, Zn, Mn, Cu, Ni, and Se in dry samples and plant teas. The dry plants have high concentration of K and P. All dry plants contain Mg, Na, Al, Fe, Mn, Ni, Zn, and Cu above the limit permissible level set by the World Health Organization (WHO). All the hazard index (HI) values in plant teas were found to be within safe limits for human consumption (HI < 1). The plants may have possible action benefits when used in popular medicine. However, the ingestion through capsules prepared by enclosing a plant powder or teas can be harmful to the health of diabetics. The prescription of this plant for the treatment of diabetes should be treated with caution.
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Affiliation(s)
- Igor D de Souza
- Group of Spectroscopy and Bioinformatics Applied to Biodiversity and Health, School of Medicine, Postgraduation Program in Health and Development in the Midwest Region, Faculty of Medicine, Federal University of Mato Grosso do Sul, Campo Grande, Mato Grosso do Sul 79070-900, Brazil
| | - Elaine S P Melo
- Group of Spectroscopy and Bioinformatics Applied to Biodiversity and Health, School of Medicine, Postgraduation Program in Health and Development in the Midwest Region, Faculty of Medicine, Federal University of Mato Grosso do Sul, Campo Grande, Mato Grosso do Sul 79070-900, Brazil
| | - Valdir Aragão Nascimento
- Group of Spectroscopy and Bioinformatics Applied to Biodiversity and Health, School of Medicine, Postgraduation Program in Health and Development in the Midwest Region, Faculty of Medicine, Federal University of Mato Grosso do Sul, Campo Grande, Mato Grosso do Sul 79070-900, Brazil
| | - Hugo S Pereira
- Group of Spectroscopy and Bioinformatics Applied to Biodiversity and Health, School of Medicine, Postgraduation Program in Health and Development in the Midwest Region, Faculty of Medicine, Federal University of Mato Grosso do Sul, Campo Grande, Mato Grosso do Sul 79070-900, Brazil
| | - Kassia R N Silva
- Institute of Chemistry of the Federal University of Mato Grosso do Sul, Brazil
| | - Paulo R Espindola
- Group of Spectroscopy and Bioinformatics Applied to Biodiversity and Health, School of Medicine, Postgraduation Program in Health and Development in the Midwest Region, Faculty of Medicine, Federal University of Mato Grosso do Sul, Campo Grande, Mato Grosso do Sul 79070-900, Brazil
| | - Paula F S Tschinkel
- Group of Spectroscopy and Bioinformatics Applied to Biodiversity and Health, School of Medicine, Postgraduation Program in Health and Development in the Midwest Region, Faculty of Medicine, Federal University of Mato Grosso do Sul, Campo Grande, Mato Grosso do Sul 79070-900, Brazil
| | - Eliza M Ramos
- Group of Spectroscopy and Bioinformatics Applied to Biodiversity and Health, School of Medicine, Postgraduation Program in Health and Development in the Midwest Region, Faculty of Medicine, Federal University of Mato Grosso do Sul, Campo Grande, Mato Grosso do Sul 79070-900, Brazil
| | - Francisco J M Reis
- Group of Spectroscopy and Bioinformatics Applied to Biodiversity and Health, School of Medicine, Postgraduation Program in Health and Development in the Midwest Region, Faculty of Medicine, Federal University of Mato Grosso do Sul, Campo Grande, Mato Grosso do Sul 79070-900, Brazil
| | - Iara B Ramos
- Postgraduation Program in Health and Development in the Midwest Region, Faculty of Medicine, Federal University of Mato Grosso do Sul, Campo Grande, Mato Grosso do Sul 79070-900, Brazil
| | - Fernanda G Paula
- Postgraduation Program in Health and Development in the Midwest Region, Faculty of Medicine, Federal University of Mato Grosso do Sul, Campo Grande, Mato Grosso do Sul 79070-900, Brazil
| | - Karla R W Oliveira
- Institute of Chemistry of the Federal University of Mato Grosso do Sul, Brazil
| | - Cleberson D Lima
- Centro de Ortopedia e Traumatologia e Medicina do Esporte, Campo Grande, MS, 79021-250, Brazil
| | - Ângela A Nunes
- Postdoctoral Student in Program in Biotechnology, Universidade Católica Dom Bosco, Campo Grande, MS 79117-900, Brazil
| | - Valter Aragão do Nascimento
- Group of Spectroscopy and Bioinformatics Applied to Biodiversity and Health, School of Medicine, Postgraduation Program in Health and Development in the Midwest Region, Faculty of Medicine, Federal University of Mato Grosso do Sul, Campo Grande, Mato Grosso do Sul 79070-900, Brazil
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65
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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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Tea as a Source of Biologically Active Compounds in the Human Diet. Molecules 2021; 26:molecules26051487. [PMID: 33803306 PMCID: PMC7967157 DOI: 10.3390/molecules26051487] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2021] [Revised: 03/04/2021] [Accepted: 03/05/2021] [Indexed: 11/25/2022] Open
Abstract
Due to the different levels of bioactive compounds in tea reported in the literature, the aim of this study was to determine whether commercially available leaf teas could be an important source of phenolics and selected minerals (copper, manganese, iron, zinc, magnesium, calcium, sodium, potassium) and if the differences in the content of these components between various types of tea are significant. It was found that both the amount of these compounds in tea and the antioxidant activity of tea infusions were largely determined by the origin of tea leaves as well as the processing method, which can modify the content of the studied components up to several hundred-fold. The group of green teas was the best source of phenolic compounds (110.73 mg/100 mL) and magnesium (1885 µg/100 mL) and was also characterised by the highest antioxidant activity (59.02%). This type of tea is a great contributor to the daily intake of the studied components. The average consumption of green tea infusions, assumed to be 3–4 cups (1 L) a day, provides the body with health-promoting polyphenol levels significantly exceeding the recommended daily dose. Moreover, drinking one litre of an unfermented tea infusion provides more than three times the recommended daily intake of manganese. Tea infusions can be a fairly adequate, but only a supplementary, source of potassium, zinc, magnesium, and copper in the diet. Moreover, it could be concluded that the antioxidant activity of all the analysed types of tea infusions results not only from the high content of phenolic compounds and manganese but is also related to the presence of magnesium and potassium.
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Heshmati A, Mehri F, Mousavi Khaneghah A. Simultaneous multi-determination of pesticide residues in black tea leaves and infusion: a risk assessment study. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:13725-13735. [PMID: 33197000 DOI: 10.1007/s11356-020-11658-3] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/29/2020] [Accepted: 11/12/2020] [Indexed: 06/11/2023]
Abstract
This study aimed to investigate the concentration of 33 pesticide residues in 60 black tea samples collected from Iran, determine their transfer rate, and assess their health risk during brewing. Pesticide extraction and analysis were performed by using a quick, easy, cheap, effective, rugged, and safe (QuEChERS) method and gas chromatography/tandem mass spectrometry (GC-MS/MS), respectively. The limits of detection (LOD) and the limits of quantification (LOQ) of pesticides were ranged 0.1-7.26 and 0.8-24 μg/kg for dried tea leaves and 0.03-3.1 and 0.09-10 μg/L for the tea infusion, respectively. The levels of pesticide residue in 52 (86.67%) out of 60 tea samples were above the LOD (0.1-7.26 μg/kg). Twenty four (40%) of the samples contained pesticides in a concentration higher than the maximum residue limit (MRL) set by the European Commission (EC). Seven out of 33 validated pesticides were detected in dried tea leaf samples that only four of seven, including buprofezin, chlorpyrifos, hexaconazole, and triflumizole, were transferred into tea infusion, demonstrating that the concentrations of pesticides in infusion were raised during brewing. The risk assessment study for detected pesticides in the tea infusion samples indicated that this beverage consumption was safe for consumers, while the mean residue of some pesticides in positive samples was higher than the MRL; therefore, periodic control of these pesticides should be regularly implemented.
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Affiliation(s)
- Ali Heshmati
- Nutrition Health Research Center, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Fereshteh Mehri
- Nutrition Health Research Center, Hamadan University of Medical Sciences, Hamadan, Iran.
| | - Amin Mousavi Khaneghah
- Department of Food Science, Faculty of Food Engineering, University of Campinas (UNICAMP), Rua Monteiro Lobato, 80. Caixa Postal: 6121, Campinas, São Paulo, CEP: 13083-862, Brazil.
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68
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Deka H, Barman T, Dutta J, Devi A, Tamuly P, Kumar Paul R, Karak T. Catechin and caffeine content of tea (Camellia sinensis L.) leaf significantly differ with seasonal variation: A study on popular cultivars in North East India. J Food Compost Anal 2021. [DOI: 10.1016/j.jfca.2020.103684] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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69
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Peng CY, Xu XF, Ren YF, Niu HL, Yang YQ, Hou RY, Wan XC, Cai HM. Fluoride absorption, transportation and tolerance mechanism in Camellia sinensis, and its bioavailability and health risk assessment: a systematic review. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2021; 101:379-387. [PMID: 32623727 DOI: 10.1002/jsfa.10640] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/28/2020] [Revised: 06/27/2020] [Accepted: 07/05/2020] [Indexed: 06/11/2023]
Abstract
Tea is the one of the most popular non-alcoholic caffeinated beverages in the world. Tea is produced from the tea plant (Camellia sinensis (L.) O. Kuntze), which is known to accumulate fluoride. This article systematically analyzes the literature concerning fluoride absorption, transportation and fluoride tolerance mechanisms in tea plants. Fluoride bioavailability and exposure levels in tea infusions are also reviewed. The circulation of fluoride within the tea plantation ecosystems is in a positive equilibrium, with greater amounts of fluoride introduced to tea orchards than removed. Water extractable fluoride and magnesium chloride (MgCl2 ) extractable fluoride in plantation soil are the main sources of absorption by tea plant root via active trans-membrane transport and anion channels. Most fluoride is readily transported through the xylem as F- /F-Al complexes to leaf cell walls and vacuole. The findings indicate that tea plants employ cell wall accumulation, vacuole compartmentalization, and F-Al complexes to co-detoxify fluoride and aluminum, a possible tolerance mechanism through which tea tolerates higher levels of fluoride than most plants. Furthermore, dietary and endogenous factors influence fluoride bioavailability and should be considered when exposure levels of fluoride in commercially available dried tea leaves are interpreted. The relevant current challenges and future perspectives are also discussed. © 2020 Society of Chemical Industry.
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Affiliation(s)
- Chuan-Yi Peng
- State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, Hefei, P. R. China
- Key Laboratory of Food Nutrition and Safety, School of Tea and Food Science & Technology, Anhui Agricultural University, Hefei, P. R. China
- Anhui Province Key Lab of Analysis and Detection for Food Safety, Hefei, P. R. China
| | - Xue-Feng Xu
- State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, Hefei, P. R. China
- Key Laboratory of Food Nutrition and Safety, School of Tea and Food Science & Technology, Anhui Agricultural University, Hefei, P. R. China
- Anhui Province Key Lab of Analysis and Detection for Food Safety, Hefei, P. R. China
| | - Yin-Feng Ren
- State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, Hefei, P. R. China
- Key Laboratory of Food Nutrition and Safety, School of Tea and Food Science & Technology, Anhui Agricultural University, Hefei, P. R. China
- Anhui Province Key Lab of Analysis and Detection for Food Safety, Hefei, P. R. China
| | - Hui-Liang Niu
- State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, Hefei, P. R. China
- Key Laboratory of Food Nutrition and Safety, School of Tea and Food Science & Technology, Anhui Agricultural University, Hefei, P. R. China
- Anhui Province Key Lab of Analysis and Detection for Food Safety, Hefei, P. R. China
| | - Yun-Qiu Yang
- State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, Hefei, P. R. China
- Key Laboratory of Food Nutrition and Safety, School of Tea and Food Science & Technology, Anhui Agricultural University, Hefei, P. R. China
- Anhui Province Key Lab of Analysis and Detection for Food Safety, Hefei, P. R. China
| | - Ru-Yan Hou
- State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, Hefei, P. R. China
- Key Laboratory of Food Nutrition and Safety, School of Tea and Food Science & Technology, Anhui Agricultural University, Hefei, P. R. China
- Anhui Province Key Lab of Analysis and Detection for Food Safety, Hefei, P. R. China
| | - Xiao-Chun Wan
- State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, Hefei, P. R. China
- Key Laboratory of Food Nutrition and Safety, School of Tea and Food Science & Technology, Anhui Agricultural University, Hefei, P. R. China
- Anhui Province Key Lab of Analysis and Detection for Food Safety, Hefei, P. R. China
| | - Hui-Mei Cai
- State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, Hefei, P. R. China
- Key Laboratory of Food Nutrition and Safety, School of Tea and Food Science & Technology, Anhui Agricultural University, Hefei, P. R. China
- Anhui Province Key Lab of Analysis and Detection for Food Safety, Hefei, P. R. China
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70
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Gezaf SA, Abo Nouh FA, Abdel-Azeem AM. Fungal Communities from Different Habitats for Tannins in Industry. Fungal Biol 2021. [DOI: 10.1007/978-3-030-85603-8_4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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71
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Borgohain A, Konwar K, Buragohain D, Varghese S, Kumar Dutta A, Paul RK, Khare P, Karak T. Temperature effect on biochar produced from tea (Camellia sinensis L.) pruning litters: A comprehensive treatise on physico-chemical and statistical approaches. BIORESOURCE TECHNOLOGY 2020; 318:124023. [PMID: 32882483 DOI: 10.1016/j.biortech.2020.124023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/18/2020] [Revised: 08/12/2020] [Accepted: 08/13/2020] [Indexed: 06/11/2023]
Abstract
The present study aimed to optimize the production of biochar from tea (Camellia sinensis L.) pruning litter. Characterization of biochar prepared from four tea pruning litters (mixed, Tocklai Vegetative 1, 22 and 25) at five pyrolysis temperatures (250, 300, 350, 400, 450, and 500 °C for 3 h) were documented. The results demonstrated that yield, total nitrogen, H:C, and O:C decreased steadily with increasing pyrolysis temperature. However, water holding capacity, ash content, fixed carbon, C:N, NH4+-N, NO3--N, trace elements, total P and K, and germination index increased consistently with increasing pyrolysis temperature. All the prepared biochars are suitable for agriculture application as H:C and O:C ratios of prepared biochars are <0.6 and <0.4, respectively. Low pyrolysis temperature (<300 °C) was optimal to get more stable biochar with respect to essential nutrients. Biochar derived from Tocklai Vegetative 1 at 300 °C has more potential for agronomic applications. Principal component analysis showed >96% variability.
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Affiliation(s)
- Arup Borgohain
- Upper Assam Advisory Centre, Tea Research Association, Dikom 786101, Assam, India
| | - Kaberijyoti Konwar
- Upper Assam Advisory Centre, Tea Research Association, Dikom 786101, Assam, India
| | - Dibyajit Buragohain
- Upper Assam Advisory Centre, Tea Research Association, Dikom 786101, Assam, India
| | - Sam Varghese
- Upper Assam Advisory Centre, Tea Research Association, Dikom 786101, Assam, India
| | - Amrit Kumar Dutta
- Upper Assam Advisory Centre, Tea Research Association, Dikom 786101, Assam, India
| | - Ranjit K Paul
- Indian Agricultural Statistics Research Institute, New Delhi 110012, India
| | - Puja Khare
- Agronomy‑Soil Division, CSIR-Central Institute of Medicinal and Aromatic Plants, P.O. -CIMAP, Near Kukrail Picnic Spot, Lucknow 226 015, India
| | - Tanmoy Karak
- Upper Assam Advisory Centre, Tea Research Association, Dikom 786101, Assam, India.
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72
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Yang B, Zhang C, Zhang X, Wang G, Li L, Geng H, Liu Y, Nie C. Survey of aflatoxin B1 and heavy metal contamination in peanut and peanut soil in China during 2017–2018. Food Control 2020. [DOI: 10.1016/j.foodcont.2020.107372] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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73
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Free and bound amino acids, minerals and trace elements in matcha (Camellia sinensis L.): A nutritional evaluation. J Food Compost Anal 2020. [DOI: 10.1016/j.jfca.2020.103581] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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74
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Soliman MA, Abdou FS, Mohamed NM. Novel neutron activation analysis scheme for determination of trace elements in medicinal plants infusion. J Radioanal Nucl Chem 2020. [DOI: 10.1007/s10967-020-07194-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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75
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Yu XL, Sun DW, He Y. Emerging techniques for determining the quality and safety of tea products: A review. Compr Rev Food Sci Food Saf 2020; 19:2613-2638. [PMID: 33336976 DOI: 10.1111/1541-4337.12611] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2020] [Revised: 07/13/2020] [Accepted: 07/14/2020] [Indexed: 11/30/2022]
Abstract
Spectroscopic techniques, electrochemical methods, nanozymes, computer vision, and modified chromatographic techniques are the emerging techniques for determining the quality and safety parameters (e.g., physical, chemical, microbiological, and classified parameters, as well as inorganic and organic contaminants) of tea products (such as fresh tea leaves, commercial tea, tea beverage, tea powder, and tea bakery products) effectively. By simplifying the sample preparation, speeding up the detection process, reducing the interference of other substances contained in the sample, and improving the sensitivity and accuracy of the current standard techniques, the abovementioned emerging techniques achieve rapid, cost-effective, and nondestructive or slightly destructive determination of tea products, with some of them providing real-time detection results. Applying these emerging techniques in the whole industry of tea product processing, right from the picking of fresh tea leaves, fermentation of tea leaves, to the sensory evaluation of commercial tea, as well as developing portable devices for real-time and on-site determination of classified and safety parameters (e.g., the geographical origin, grade, and content of contaminants) will not only eliminate the strong dependence on professionals but also help mechanize the production of tea products, which deserves further research. Conducting a review on the application of spectroscopic techniques, electrochemical methods, nanozymes, computer vision, and modifications of chromatographic techniques for quality and safety determination of tea products may serve as guide for other types of foods and beverages, offering potential techniques for their detection and evaluation, which would promote the development of the food industry.
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Affiliation(s)
- Xiao-Lan Yu
- College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou, P. R. China
| | - Da-Wen Sun
- School of Biosystems Engineering, University College Dublin, Dublin, Ireland
| | - Yong He
- College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou, P. R. China
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76
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Yao Q, Yan SA, Li J, Huang M, Lin Q. Health risk assessment of 42 pesticide residues in Tieguanyin tea from Fujian, China. Drug Chem Toxicol 2020; 45:932-939. [DOI: 10.1080/01480545.2020.1802476] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Qinghua Yao
- Fujian Key Laboratory of Agro-Products Quality and Safety, Institute of Quality Standards Testing Technology for Agro-products, Fujian Academy of Agricultural Sciences, Fuzhou, China
| | - Sun-An Yan
- Fujian Key Laboratory of Agro-Products Quality and Safety, Institute of Quality Standards Testing Technology for Agro-products, Fujian Academy of Agricultural Sciences, Fuzhou, China
| | - Jie Li
- Inspection and Quarantine Technique Center of Fujian Entry-Exit Inspection and Quarantine Bureau, Fuzhou, China
| | - Minmin Huang
- Fujian Key Laboratory of Agro-Products Quality and Safety, Institute of Quality Standards Testing Technology for Agro-products, Fujian Academy of Agricultural Sciences, Fuzhou, China
| | - Qiu Lin
- Fujian Key Laboratory of Agro-Products Quality and Safety, Institute of Quality Standards Testing Technology for Agro-products, Fujian Academy of Agricultural Sciences, Fuzhou, China
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77
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Peng P, Wang L, Shu G, Li J, Chen L. Nutrition and aroma challenges of green tea product as affected by emerging superfine grinding and traditional extraction. Food Sci Nutr 2020; 8:4565-4572. [PMID: 32884736 PMCID: PMC7455925 DOI: 10.1002/fsn3.1768] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2020] [Revised: 06/16/2020] [Accepted: 06/17/2020] [Indexed: 02/06/2023] Open
Abstract
Green tea, superfine green tea powder (SGTP), and tea extract were prepared to determine their chemical components and antioxidant activity. The nutrition and aroma challenges of green tea during traditional extract technique and superfine grinding were profiled in this study. The traditional extract technique took advantage over superfine grinding in L-theanine and glutamic acid (Glu) preservation, but not in other 16 essential amino acids. SGTP preserved a maximum of elements from green tea, whereas tea extract greatly changed the elements ratio. Tea extract contained higher VB2 and VC contents and doubled the tea polyphenol (TP) content in comparison with green tea and SGTP. Additionally, tea extract contained more favorable aroma compounds and maintained stronger antioxidant activity in comparison with green tea and SGTP. This study profiled an important basis for the comprehensive utilization of green tea resources by consumers and manufacturers.
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Affiliation(s)
- Pai Peng
- College of Food Engineering and Nutritional ScienceShaanxi Normal UniversityXi’anP. R. China
| | - Linlin Wang
- College of Food Engineering and Nutritional ScienceShaanxi Normal UniversityXi’anP. R. China
| | - Guowei Shu
- School of Food and Biological EngineeringShaanxi University of Science and TechnologyXi’anP.R. China
| | - Jianke Li
- College of Food Engineering and Nutritional ScienceShaanxi Normal UniversityXi’anP. R. China
| | - Li Chen
- College of Food Engineering and Nutritional ScienceShaanxi Normal UniversityXi’anP. R. China
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78
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Liu H, Zeng Y, Yan J, Huang R, Zhao X, Zheng X, Mo M, Tan S, Tong H. C N H O and mineral element stable isotope ratio analysis for authentication in tea. J Food Compost Anal 2020. [DOI: 10.1016/j.jfca.2020.103513] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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79
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Lee JG, Hwang JY, Lee HE, Choi JD, Kang GJ. Comparative analysis of lead content during food processing. Food Sci Biotechnol 2020; 29:1063-1069. [PMID: 32670660 DOI: 10.1007/s10068-020-00756-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2020] [Revised: 03/11/2020] [Accepted: 03/19/2020] [Indexed: 10/24/2022] Open
Abstract
Heavy metals in groups 3-16 in periods 4 and greater. They exist naturally in the earth's crust. People are exposed to heavy metals by the inhalation of polluted air and via the intake of contaminated food. People are exposed to lead (Pb), one of heavy metals, by consuming foods that are contaminated from the environment. Pb is ubiquitous in the environment and accumulates in plants and animals that eat contaminated plants. The Pb in foods before and after processing were analyzed via Inductively coupled plasma with mass spectrometry to determine the effects of the procedures on the Pb migration and residue. This analytical method was verified to have a limit of detection of 0.011-0.859 µg/kg, acceptable linearity with the regression coefficient of 0.999, relative recoveries of 78.1-89.9% and repeatability of 1.4-7.7%. The amount of Pb was reduced during the following processes: more than 79.6% by extracting ginseng, extracting red ginseng and balloon flower roots via alcohol, more than 47.9% by blanching Chwinamul, more than 18.2% by brewing coffee with cold and hot water, more than 22.2% by extracting juices from fruits and peeling fruits. Therefore, proper cooking and food processing can be advantageous in terms of reducing exposure to Pb.
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Affiliation(s)
- Joon-Goo Lee
- Food Contaminants Division, Department of Food Safety Evaluation, National Institute of Food and Drug Safety Evaluation, Ministry of Food and Drug Safety, Osong-eup, Heungdeok-gu, Cheongju-si, 28159 South Korea
| | - Jeong-Yun Hwang
- Food Contaminants Division, Department of Food Safety Evaluation, National Institute of Food and Drug Safety Evaluation, Ministry of Food and Drug Safety, Osong-eup, Heungdeok-gu, Cheongju-si, 28159 South Korea
| | - Hye-Eun Lee
- Food Contaminants Division, Department of Food Safety Evaluation, National Institute of Food and Drug Safety Evaluation, Ministry of Food and Drug Safety, Osong-eup, Heungdeok-gu, Cheongju-si, 28159 South Korea
| | - Jang-Duck Choi
- Food Contaminants Division, Department of Food Safety Evaluation, National Institute of Food and Drug Safety Evaluation, Ministry of Food and Drug Safety, Osong-eup, Heungdeok-gu, Cheongju-si, 28159 South Korea
| | - Gil-Jin Kang
- Food Contaminants Division, Department of Food Safety Evaluation, National Institute of Food and Drug Safety Evaluation, Ministry of Food and Drug Safety, Osong-eup, Heungdeok-gu, Cheongju-si, 28159 South Korea
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80
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Zhang R, Ma Y, Hu X, Chen Y, He X, Wang P, Chen Q, Ho CT, Wan X, Zhang Y, Zhang S. TeaCoN: a database of gene co-expression network for tea plant (Camellia sinensis). BMC Genomics 2020; 21:461. [PMID: 32620074 PMCID: PMC7333269 DOI: 10.1186/s12864-020-06839-w] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2019] [Accepted: 06/16/2020] [Indexed: 01/05/2023] Open
Abstract
Background Tea plant (Camellia sinensis) is one of the world’s most important beverage crops due to its numerous secondary metabolites conferring tea quality and health effects. However, only a small fraction of tea genes (especially for those metabolite-related genes) have been functionally characterized to date. A cohesive bioinformatics platform is thus urgently needed to aid in the functional determination of the remaining genes. Description TeaCoN, a database of gene co-expression network for tea plant, was established to provide genome-wide associations in gene co-expression to survey gene modules (i.e., co-expressed gene sets) for a function of interest. TeaCoN featured a comprehensive collection of 261 high-quality RNA-Seq experiments that covered a wide range of tea tissues as well as various treatments for tea plant. In the current version of TeaCoN, 31,968 (94% coverage of the genome) tea gene models were documented. Users can retrieve detailed co-expression information for gene(s) of interest in four aspects: 1) co-expressed genes with the corresponding Pearson correlation coefficients (PCC-values) and statistical P-values, 2) gene information (gene ID, description, symbol, alias, chromosomal location, GO and KEGG annotation), 3) expression profile heatmap of co-expressed genes across seven main tea tissues (e.g., leaf, bud, stem, root), and 4) network visualization of co-expressed genes. We also implemented a gene co-expression analysis, BLAST search function, GO and KEGG enrichment analysis, and genome browser to facilitate use of the database. Conclusion The TeaCoN project can serve as a beneficial platform for candidate gene screening and functional exploration of important agronomical traits in tea plant. TeaCoN is freely available at http://teacon.wchoda.com.
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Affiliation(s)
- Rui Zhang
- School of Information and Computer, Anhui Agricultural University, Hefei, China
| | - Yong Ma
- School of Information and Computer, Anhui Agricultural University, Hefei, China
| | - Xiaoyi Hu
- School of Forestry and Landscape Architecture, Anhui Agricultural University, Hefei, China
| | - Ying Chen
- State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, Hefei, China
| | - Xiaolong He
- School of sciences, Anhui Agricultural University, Hefei, China
| | - Ping Wang
- School of sciences, Anhui Agricultural University, Hefei, China
| | - Qi Chen
- State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, Hefei, China
| | - Chi-Tang Ho
- Food Science, Rutgers University, New Brunswick, USA
| | - Xiaochun Wan
- State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, Hefei, China
| | - Youhua Zhang
- School of Information and Computer, Anhui Agricultural University, Hefei, China.
| | - Shihua Zhang
- School of sciences, Anhui Agricultural University, Hefei, China. .,College of Life Science and Health, Wuhan University of Science and Technology, Wuhan, China.
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81
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Barman T, Barooah AK, Goswami BC, Sharma N, Panja S, Khare P, Karak T. Contents of Chromium and Arsenic in Tea (Camellia sinensis L.): Extent of Transfer into Tea Infusion and Health Consequence. Biol Trace Elem Res 2020; 196:318-329. [PMID: 31506911 DOI: 10.1007/s12011-019-01889-y] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/02/2018] [Accepted: 02/07/2019] [Indexed: 10/26/2022]
Abstract
Tea (Camellia sinensis L.) is the most popular beverage in the world after water. Due to acidophilic nature of tea plant, it has inherent tendency to uptake metals/metalloids including the toxic ones from the soil which is of great concern worldwide. In this study, level of chromium (Cr) and arsenic (As) were assessed in four hundred ninety-seven (497) black tea samples collected from six tea growing regions of Assam and North Bengal, India. The average concentration of Cr and As in the tested black tea samples was 10.33 and 0.11 μg g-1, respectively. Since tea is consumed as a beverage, transfer of Cr and As from black tea to its hot water extract (also known as tea infusion) was also accessed. The amount of Cr and As determined in the tea infusion was much less (< 0.20 to 1.38 μg g-1 for Cr and < 3.60 to 34.79 μg kg-1 for As) than those in the black teas with the transfer rate up to 5.96% and 8.53%, respectively. The present study showed that values of hazard quotient were well below one suggesting that intake of Cr and As from consumption of five cups of tea equivalent to 10 g black tea would not impose any health hazard.
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Affiliation(s)
- Tupu Barman
- Analytical Services Department, Tocklai Tea Research Institute, Jorhat, Assam, 785008, India
| | - A K Barooah
- Analytical Services Department, Tocklai Tea Research Institute, Jorhat, Assam, 785008, India
| | - B C Goswami
- Cotton University, Guwahati, Assam, 781001, India
| | - Nipom Sharma
- Analytical Services Department, Tocklai Tea Research Institute, Jorhat, Assam, 785008, India
| | - Saumik Panja
- Department of Civil, Environmental and Ocean Engineering, Stevens Institute of Technology, 1 Castle Point Terrace, Hoboken, NJ, 07030, USA
| | - Puja Khare
- Agronomy-Soil Division, CSIR-Central Institute of Medicinal and Aromatic Plants, P.O.-CIMAP, Near Kukrail Picnic Spot, Lucknow, 226 015, India
| | - Tanmoy Karak
- Department of Civil, Environmental and Ocean Engineering, Stevens Institute of Technology, 1 Castle Point Terrace, Hoboken, NJ, 07030, USA.
- Upper Assam Advisory Centre, Tea Research Association, Dikom, Assam, 786 101, India.
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82
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Štepec D, Tavčar G, Ponikvar-Svet M. Surprisingly high fluorine content in some exotic superfoods. J Fluor Chem 2020. [DOI: 10.1016/j.jfluchem.2020.109521] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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83
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Pathak U, Jhunjhunwala A, Roy A, Das P, Kumar T, Mandal T. Efficacy of spent tea waste as chemically impregnated adsorbent involving ortho-phosphoric and sulphuric acid for abatement of aqueous phenol-isotherm, kinetics and artificial neural network modelling. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:20629-20647. [PMID: 31385251 DOI: 10.1007/s11356-019-06014-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/11/2019] [Accepted: 07/22/2019] [Indexed: 06/10/2023]
Abstract
The current study emphasises on sorptive expulsion of phenol from aqueous solution using ortho-phosphoric acid (STAC-O) and sulphuric acid (STAC-H)-activated biochar derived from spent tea waste. STAC-O and STAC-H were instrumentally anatomised using scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), BET surface area and thermal gravimetric analyser. Equilibrium and kinetic data were implemented for the investigative parametric batch study to prospect the influence of adsorbent dosage, contact time, initial concentration and pH for eradication of phenol from aqueous solution. The maximum phenolic removals by STAC-O and STAC-H are 93.59% and 91.024% respectively at the parametric conditions of adsorbent dosage 3 g/l time 2 h, initial phenol concentration 100 mg/l and pH 8. Non-linear regression of adsorption isotherms and kinetics was accomplished using the equilibrium data. Both the specimens were compared, and it delineated that Temkin isotherm model is contented. The maximum adsorption intakes for STAC-H and STAC-O were 185.002 mg/g and 154.39 mg/g respectively. Pseudo-second-order kinetic model was best fitted for portraying the chemisorption phenomena. Boyd kinetic and intra-particle diffusion model were investigated to elucidate the diffusion mechanism involved in the process. Desorption study was employed for determining the regeneration proficiency of the adsorbents using water, ethanol and NaOH with maximum 93% and 51.16% extrusion for STAC-O and STAC-H respectively. The process parameters involved in this study were further analysed using artificial neural network perusal to determine the input-output relationships and data pattern. The overall adsorption study along with cost estimation exhibited that bidirectional activation of spent tea biochar was prospective in abatement of phenol from aqueous media.
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Affiliation(s)
- Uttarini Pathak
- Centre for Technological Excellence in Water Purification, Department of Chemical Engineering, National Institute of Technology Durgapur, Durgapur, India
| | - Aastha Jhunjhunwala
- Centre for Technological Excellence in Water Purification, Department of Chemical Engineering, National Institute of Technology Durgapur, Durgapur, India
| | - Ananya Roy
- Centre for Technological Excellence in Water Purification, Department of Chemical Engineering, National Institute of Technology Durgapur, Durgapur, India
| | - Papita Das
- Department of Chemical Engineering, Jadavpur University, Kolkata, India
| | - Tarkeshwar Kumar
- Department of Petroleum Engineering, ISM Dhanbad, Dhanbad, Jharkhand, India
| | - Tamal Mandal
- Centre for Technological Excellence in Water Purification, Department of Chemical Engineering, National Institute of Technology Durgapur, Durgapur, India.
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84
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Francl M. A chemist’s cup of tea. Nat Chem 2020; 12:319-320. [DOI: 10.1038/s41557-020-0445-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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85
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Guo W, Lin X, Jin L, Hu S. Single quadrupole inductively coupled plasma-mass spectrometry for the measurement of fluorine in tea infusions and its health risk assessment. J Food Compost Anal 2020. [DOI: 10.1016/j.jfca.2019.103378] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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86
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Meng L, Chen X, Chen X, Yuan L, Shi W, Cai Q, Huang G. Linear and nonlinear classification models for tea grade identification based on the elemental profile. Microchem J 2020. [DOI: 10.1016/j.microc.2019.104512] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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87
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Qiu S, Wei Y, Tu T, Xiang J, Zhang D, Chen Q, Luo L, Lin Z. Triazole-stabilized fluorescence sensor for highly selective detection of copper in tea and animal feed. Food Chem 2020; 317:126434. [PMID: 32106007 DOI: 10.1016/j.foodchem.2020.126434] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2019] [Revised: 02/06/2020] [Accepted: 02/17/2020] [Indexed: 01/27/2023]
Abstract
A triazole-stabilized fluorescence sensor is developed for copper detection in the study. Tris-(benzyltriazolylmethyl)amine (TBTA) is used to improve the sensitivity and stability for the sensing system. A series of comparative experiments are performed with and without TBTA. In the presence of TBTA, the fluorescence decrease ratio is enhanced from 2.46 to 118.25; the detection limit is reduced from 67 nM to 3.6 nM; the higher selectivity toward copper compared to the other metal ions is verified, including K+, Ca2+, Cd2+, Zn2+, Mg2+, Mn2+, Pb2+, Hg2+, Fe3+ and Cr3+. Besides, the sensing system is successfully applied for copper determination in complex tea samples and chicken feed samples with the recovery range of 91.67-116.8%. A good consistency between the presented sensor and the flame atom absorbance spectrometry (FAAS) is confirmed by the low relative errors with the range from -2.39% to 7.02%.
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Affiliation(s)
- Suyan Qiu
- Laboratory of Quality & Safety Risk Assessment for Animal Products (Nanchang), Ministry of Agriculture and Rural Affairs, Institute for Quality & Safety and Standards of Agricultural Products Research, Jiangxi Academy of Agricultural Sciences, Nanchang, Jiangxi 330200, China
| | - Yihua Wei
- Laboratory of Quality & Safety Risk Assessment for Animal Products (Nanchang), Ministry of Agriculture and Rural Affairs, Institute for Quality & Safety and Standards of Agricultural Products Research, Jiangxi Academy of Agricultural Sciences, Nanchang, Jiangxi 330200, China
| | - Tianhua Tu
- Laboratory of Quality & Safety Risk Assessment for Animal Products (Nanchang), Ministry of Agriculture and Rural Affairs, Institute for Quality & Safety and Standards of Agricultural Products Research, Jiangxi Academy of Agricultural Sciences, Nanchang, Jiangxi 330200, China
| | - Jianjun Xiang
- Laboratory of Quality & Safety Risk Assessment for Animal Products (Nanchang), Ministry of Agriculture and Rural Affairs, Institute for Quality & Safety and Standards of Agricultural Products Research, Jiangxi Academy of Agricultural Sciences, Nanchang, Jiangxi 330200, China
| | - Dawen Zhang
- Laboratory of Quality & Safety Risk Assessment for Animal Products (Nanchang), Ministry of Agriculture and Rural Affairs, Institute for Quality & Safety and Standards of Agricultural Products Research, Jiangxi Academy of Agricultural Sciences, Nanchang, Jiangxi 330200, China
| | - Qinglong Chen
- Laboratory of Quality & Safety Risk Assessment for Animal Products (Nanchang), Ministry of Agriculture and Rural Affairs, Institute for Quality & Safety and Standards of Agricultural Products Research, Jiangxi Academy of Agricultural Sciences, Nanchang, Jiangxi 330200, China
| | - Linguang Luo
- Laboratory of Quality & Safety Risk Assessment for Animal Products (Nanchang), Ministry of Agriculture and Rural Affairs, Institute for Quality & Safety and Standards of Agricultural Products Research, Jiangxi Academy of Agricultural Sciences, Nanchang, Jiangxi 330200, China.
| | - Zhenyu Lin
- MOE Key Laboratory of Analysis and Detection for Food Safety, Fujian Provincial Key Laboratory of Analysis and Detection Technology for Food Safety, Department of Chemistry, Fuzhou University, Fuzhou, Fujian 350002, China.
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88
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Guan C, Yang Y. Research of extraction behavior of heavy metal Cd in tea based on backpropagation neural network. Food Sci Nutr 2020; 8:1067-1074. [PMID: 32148815 PMCID: PMC7020285 DOI: 10.1002/fsn3.1392] [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: 03/03/2019] [Revised: 11/18/2019] [Accepted: 12/03/2019] [Indexed: 12/02/2022] Open
Abstract
In order to meet the increasing demand for food and beverage safety and quality, this study focused on the application of a back propagation (BP) neural network to determine the leaching rate of heavy metal in tea to improve the scientific health of tea drinking. The evaluation index and target expectations have been determined based on the extraction experiment of heavy metal Cd in tea soaking, with 3 evaluation index values taken as input layer parameters and the heavy metal extraction rate taken as output layer parameter. Then, employ the sample data standardized by min-max linearization method to train and test the network model and get the satisfactory results, which showed that the constructed BP neural network expressed a fast convergence speed and the systematic error was as low as 0.0003509. Additionally, there was no significance between Cd leaching rate of experimental results and neural network model results by reliability testing with a correlation coefficient was .9895. These results revealed that the network model established possessed an outstanding training accuracy and generalization performance, which effectively reflected the extraction rate of heavy metal in tea soaking and improved the safety of tea drinking.
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Affiliation(s)
| | - Yue Yang
- Yangjiang PolytechnicYangjiangChina
- Guangdong Provincial Key Laboratory of Atmospheric environment and Pollution ControlSouth China University of TechnologyGuangzhouChina
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89
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Shao L, Xu S, Wang G, Yang L, Li R, Zhu J, Chen J, Jiang D. Fluoride in tea from Shandong Province, China and exposure assessment. FOOD ADDITIVES & CONTAMINANTS PART B-SURVEILLANCE 2020; 13:77-81. [DOI: 10.1080/19393210.2019.1710267] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Lijun Shao
- Department of Physical and Chemical Testing, Shandong Center for Food Safety Risk Assessment, Shandong Center for Disease Control and Prevention, Jinan, People’s Republic of China
| | - Shiming Xu
- The Center of Food Testing, Shandong Institute for Product Quality Inspection, Jinan, People’s Republic of China
| | - Guoling Wang
- Department of Physical and Chemical Testing, Shandong Center for Food Safety Risk Assessment, Shandong Center for Disease Control and Prevention, Jinan, People’s Republic of China
| | - Luping Yang
- Department of Physical and Chemical Testing, Shandong Center for Food Safety Risk Assessment, Shandong Center for Disease Control and Prevention, Jinan, People’s Republic of China
| | - Renpeng Li
- Department of Physical and Chemical Testing, Shandong Center for Food Safety Risk Assessment, Shandong Center for Disease Control and Prevention, Jinan, People’s Republic of China
| | - Jing Zhu
- College of Chemistry and Chemical Engineering, Qufu Normal University, Qufu, People’s Republic of China
| | - Jindong Chen
- Department of Physical and Chemical Testing, Shandong Center for Food Safety Risk Assessment, Shandong Center for Disease Control and Prevention, Jinan, People’s Republic of China
| | - Dafeng Jiang
- Department of Physical and Chemical Testing, Shandong Center for Food Safety Risk Assessment, Shandong Center for Disease Control and Prevention, Jinan, People’s Republic of China
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90
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Contrasting allocation of magnesium, calcium and manganese in leaves of tea (Camellia sinensis (L.) Kuntze) plants may explain their different extraction efficiency into tea. Food Chem Toxicol 2020; 135:110974. [DOI: 10.1016/j.fct.2019.110974] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2019] [Revised: 11/11/2019] [Accepted: 11/13/2019] [Indexed: 11/23/2022]
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91
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Occurrence and Risk of Metal(loid)s in Thelesperma megapotamicum Tea Plant. PLANTS 2019; 9:plants9010021. [PMID: 31877937 PMCID: PMC7020170 DOI: 10.3390/plants9010021] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/02/2019] [Revised: 11/22/2019] [Accepted: 11/29/2019] [Indexed: 12/02/2022]
Abstract
This study reports on the harvesting, ingestion, and contamination of American Indian tea Thelesperma megapotamicum grown on the Navajo Reservation in New Mexico. Uranium (U) and co-metal(loid)s (As, Cd, Cs, Mo, Pb, Se, Th, and V) have contaminated local soil and plants. Tea plants were gathered for analysis near U mining impacted areas. The study collected samples of wild tea plants (n = 14), roots (n = 14), and soil (n = 12) that were analyzed with inductively coupled plasma mass spectrometry. Tea harvesting activities, behavior, and ingestion information were collected via questionnaires. Harvesting took place in community fields and near roadways. Results indicate edible foliage concentration levels for Cd exceeded the World Health Organization (WHO) raw medicinal plant permissible level guidelines. Tea samples collected near high traffic areas had significantly greater Cd and Mo concentrations than those collected near low traffic areas (p < 0.001). Tea sample metal(loid) concentration levels ranged from 0.019–7.916 mg/kg. When compared to established food guidelines including the WHO provisional tolerable weekly intake (PTWI), reference dietary intake, recommended dietary allowance, and the tolerable upper limit (UL), Cd exceeded the WHO guidelines but none exceeded the PTWI nor the UL. These findings warrant improved standardization and establishment of universal guidelines for metal(loid) intake in food.
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92
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Study of enrichment difference of 64 elements among white tea subtypes and tea leaves of different maturity using inductively coupled plasma mass spectrometry. Food Res Int 2019; 126:108655. [DOI: 10.1016/j.foodres.2019.108655] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2019] [Revised: 08/27/2019] [Accepted: 08/31/2019] [Indexed: 11/20/2022]
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93
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Pourramezani F, Akrami Mohajeri F, Salmani MH, Dehghani Tafti A, Khalili Sadrabad E. Evaluation of heavy metal concentration in imported black tea in Iran and consumer risk assessments. Food Sci Nutr 2019; 7:4021-4026. [PMID: 31890182 PMCID: PMC6924297 DOI: 10.1002/fsn3.1267] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2019] [Revised: 08/04/2019] [Accepted: 08/25/2019] [Indexed: 11/15/2022] Open
Abstract
Tea grows in the contaminated soils, absorbs the heavy metals, and enters them into the human food chain. The concentrations of Pb, Cd, Cu, As, and Hg of the imported black tea leaves to Hormozgan Province were evaluated by atomic absorption spectrometer. Then, the Hazard Quotient (HQ) and Hazard Index (HI) levels of heavy metal intakes were calculated to estimate the health hazard for consumers. The Pb, Cd, Cu, As, and Hg concentrations in the Sri Lankan and Indian blank tea were 0.14, 0.017, 11.29, 0.057, 0.0076 mg/kg, and 0.21, 0.02, 14.56, 0.067, 0.01 mg/kg, respectively. It was found that except for As concentration in Indian black tea were higher than Sri Lankan black tea. The HQ and HI levels of all studied metals were less than one, but they were higher in Indian black tea compared with the Sri Lankan black tea. The HI of Indian and Sri Lankan black tea samples were 0.061 and 0.048, respectively, which indicated no significant health hazard for tea consumers. The results showed that the consumption of the studied tea could not have any risk of heavy metal exposure.
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Affiliation(s)
- Fatemeh Pourramezani
- Zoonotic Diseases Research CenterDepartment of Food Hygiene and SafetySchool of Public HealthShahid Sadoughi University of Medical SciencesYazdIran
| | - Fateme Akrami Mohajeri
- Zoonotic Diseases Research CenterDepartment of Food Hygiene and SafetySchool of Public HealthShahid Sadoughi University of Medical SciencesYazdIran
| | - Mohammad Hossein Salmani
- Department of Environmental Health EngineeringSchool of Public HealthShahid Sadoughi University of Medical SciencesYazdIran
| | - Arefe Dehghani Tafti
- Department of BiostatisticsSchool of Public HealthShahid Sadoughi University of Medical SciencesYazdIran
| | - Elham Khalili Sadrabad
- Zoonotic Diseases Research CenterDepartment of Food Hygiene and SafetySchool of Public HealthShahid Sadoughi University of Medical SciencesYazdIran
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94
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Non-Carcinogenic Health Risk Assessment due to Fluoride Exposure from Tea Consumption in Iran Using Monte Carlo Simulation. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2019; 16:ijerph16214261. [PMID: 31684036 PMCID: PMC6862652 DOI: 10.3390/ijerph16214261] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/29/2019] [Revised: 10/25/2019] [Accepted: 10/30/2019] [Indexed: 12/16/2022]
Abstract
Excessive intake of fluoride can cause adverse health effects. Consumption of tea as a popular drink could be a potential source of fluoride exposure to humans. This research aimed to evaluate the fluoride concentration in tea among the Iranian people using the available data in the literature and to assess the health risk related to the consumption of tea in men, women, and children. The health risk assessment was conducted using the chronic daily intake and hazard quotient according to the approach suggested by the Environmental Protection Agency. The fluoride content in published studies varied noticeably, ranging from 0.13 to 3.27 mg/L. The results revealed that the hazard quotient (HQ) in age groups of women (21-72 years) and children (0-11 years) was within the safe zone (HQ < 1) which showed that there was no potential of non-carcinogenic risk associated with drinking tea in these groups. However, in one case of the men (21-72 years), the HQ > 1 which shows a probable risk of fluorosis. The order of non-carcinogenic health risks in the studied groups was in the order of men > women > children. The results of this can be useful for organizations with the responsibility of human health promotion.
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95
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Zheng X, Xie X, Yu C, Zhang Q, Wang Y, Cong J, Liu N, He Z, Yang B, Liu J. Unveiling the activating mechanism of tea residue for boosting the biological decolorization performance of refractory dye. CHEMOSPHERE 2019; 233:110-119. [PMID: 31173951 DOI: 10.1016/j.chemosphere.2019.05.205] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2018] [Revised: 04/06/2019] [Accepted: 05/22/2019] [Indexed: 06/09/2023]
Abstract
Conventional microbial treatments are challenged by new synthetic refractory dyes. In this work, tea residue was found serving as an effective activator to boost the decolorization performance of anthraquinone dye (reactive blue 19, RB19) by a new bacterial flora DDMY2. The unfermented West Lake Longjing tea residue showed the best enhancement performance. Seventeen main kinds of components in tea residue had been selected to take separate and orthogonal experiments on decolorization of RB19 by DDMY2. Results suggested epigallocatechin gallate (EGCG) in tea residue played important roles in boosting the treatment performance. Illumina MiSeq sequencing results confirmed that EGCG and tea residue pose similar impact on the change of DDMY2 community structure. Some functional bacterial genera unclassified_o_Pseudomonadales, Stenotrophomonas and Bordetella were enriched during the treatment of RB19 by EGCG and tea residue. These evidences suggested EGCG might be the key active component in tea residue that responsible for the enhancement effect on decolorization performance. These results revealed the activating mechanism of tea residue from the perspective of composition.
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Affiliation(s)
- Xiulin Zheng
- Textile Pollution Controlling Engineering Center of Ministry of Environmental Protection, College of Environmental Science and Engineering, Donghua University, Shanghai, 201620, China.
| | - Xuehui Xie
- Textile Pollution Controlling Engineering Center of Ministry of Environmental Protection, College of Environmental Science and Engineering, Donghua University, Shanghai, 201620, China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai, 200092, PR China.
| | - Chengzhi Yu
- Textile Pollution Controlling Engineering Center of Ministry of Environmental Protection, College of Environmental Science and Engineering, Donghua University, Shanghai, 201620, China.
| | - Qingyun Zhang
- Textile Pollution Controlling Engineering Center of Ministry of Environmental Protection, College of Environmental Science and Engineering, Donghua University, Shanghai, 201620, China.
| | - Yiqin Wang
- Textile Pollution Controlling Engineering Center of Ministry of Environmental Protection, College of Environmental Science and Engineering, Donghua University, Shanghai, 201620, China.
| | - Junhao Cong
- Textile Pollution Controlling Engineering Center of Ministry of Environmental Protection, College of Environmental Science and Engineering, Donghua University, Shanghai, 201620, China.
| | - Na Liu
- School of Environment and Surveying Engineering, Suzhou University, Suzhou, Anhui, 234000, China.
| | - Zhenjiang He
- School of Metallurgy and Environment, Central South University, Changsha, 410083, PR China.
| | - Bo Yang
- Textile Pollution Controlling Engineering Center of Ministry of Environmental Protection, College of Environmental Science and Engineering, Donghua University, Shanghai, 201620, China.
| | - Jianshe Liu
- Textile Pollution Controlling Engineering Center of Ministry of Environmental Protection, College of Environmental Science and Engineering, Donghua University, Shanghai, 201620, China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai, 200092, PR China.
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96
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Assessment of Genetic Diversity of Tea Germplasm for Its Management and Sustainable Use in Korea Genebank. FORESTS 2019. [DOI: 10.3390/f10090780] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Tea (Camellia sinensis (L.) O. Kuntze) is cultivated in many developing Asian, African, and South American countries, and is the most widely consumed beverage in the world. It is of critical importance to understand the genetic diversity and population structure of tea germplasm for effective collection, conservation, and utilization. In this study, 410 tea accessions collected from South Korea were analyzed using 21 simple sequence repeat (SSR) markers. Among 410 tea accessions, 85.4% (350 accessions) were collected from Jeollanam-do. A total of 286 alleles were observed, and the genetic diversity and evenness were estimated to be on average 0.79 and 0.61, respectively, across all the tested samples. Using discriminant analysis of principal components, four clusters were detected in 410 tea accessions. Among them, cluster 1 showed a higher frequency of rare alleles (less than 1%). Using the calculation of the index of association and rbaD value, each cluster showed a clonal mode of reproduction. The result of analysis of molecular variance (AMOVA) showed that most of the variation observed was within populations (99%) rather than among populations (1%). The present study revealed the presence of lower diversity and simpler population structure in Korean tea germplasms. Consequently, more attention should be focused on collecting and conserving the new tea individuals to broaden genetic variation of new cultivars in future breeding of the tea plant.
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Ma G, Zhang J, Zhang L, Huang C, Chen L, Wang G, Liu X, Lu C. Elements characterization of Chinese tea with different fermentation degrees and its use for geographical origins by liner discriminant analysis. J Food Compost Anal 2019. [DOI: 10.1016/j.jfca.2019.103246] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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98
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A comparative assessment of metals and phthalates in commercial tea infusions: A starting point to evaluate their tolerance limits. Food Chem 2019; 288:193-200. [DOI: 10.1016/j.foodchem.2019.02.115] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2018] [Revised: 02/21/2019] [Accepted: 02/26/2019] [Indexed: 01/21/2023]
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99
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Wang X, Zhou L, Zhang X, Luo F, Chen Z. Transfer of pesticide residue during tea brewing: Understanding the effects of pesticide's physico-chemical parameters on its transfer behavior. Food Res Int 2019; 121:776-784. [DOI: 10.1016/j.foodres.2018.12.060] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2018] [Revised: 12/24/2018] [Accepted: 12/30/2018] [Indexed: 01/10/2023]
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100
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Bora K, Sarkar D, Konwar K, Payeng B, Sood K, Paul RK, Datta R, Das S, Khare P, Karak T. Disentanglement of the secrets of aluminium in acidophilic tea plant (Camellia sinensis L.) influenced by organic and inorganic amendments. Food Res Int 2019; 120:851-864. [DOI: 10.1016/j.foodres.2018.11.049] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2018] [Revised: 11/20/2018] [Accepted: 11/24/2018] [Indexed: 01/28/2023]
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