Tannase application in secondary enzymatic processing of inferior Tieguanyin Oolong tea
Conclusions These results suggested that tannase treatment could improve the quality of inferior Tieguanyin oolong tea leaves. (Source: Electronic Journal of Biotechnology)
Source: Electronic Journal of Biotechnology - June 4, 2017 Category: Biotechnology Source Type: research
Anti-stress Effect of Green Tea with Lowered Caffeine on Humans: A Pilot Study.
This study was registered at the University Hospital Medical Information Network (ID No. UMIN14942).
PMID: 28566632 [PubMed - in process] (Source: Biological and Pharmaceutical Bulletin)
Source: Biological and Pharmaceutical Bulletin - June 3, 2017 Category: Drugs & Pharmacology Authors: Unno K, Yamada H, Iguchi K, Ishida H, Iwao Y, Morita A, Nakamura Y Tags: Biol Pharm Bull Source Type: research
Protective effects of green tea on olanzapine-induced-metabolic syndrome in rats.
Abstract
Atypical antipsychotics particularly olanzapine are associated with obesity and serious metabolic disturbances. As green tea (Camellia sinensis) is generally associated with beneficial effects on obesity and other metabolic disturbances, this study was undertaken to evaluate the effect of green tea aqueous extract (GTAE) on olanzapine induced weight gain and metabolic abnormalities in rats. Male Wistar rats were divided into eight groups: control, olanzapine (5mg/kg/day, IP.), GTAE (25, 50 and 100mg/kg/day, IP.) plus olanzapine and GTAE (25, 50 and 100mg/kg/day, IP.). Treatments were continued for...
Source: Biomedicine and pharmacotherapy = Biomedecine and pharmacotherapie - June 3, 2017 Category: Drugs & Pharmacology Authors: Razavi BM, Lookian F, Hosseinzadeh H Tags: Biomed Pharmacother Source Type: research
Sensory quality evaluation for appearance of needle-shaped green tea based on computer vision and nonlinear tools.
Abstract
Tea is one of the three greatest beverages in the world. In China, green tea has the largest consumption, and needle-shaped green tea, such as Maofeng tea and Sparrow Tongue tea, accounts for more than 40% of green tea (Zhu et al., 2017). The appearance of green tea is one of the important indexes during the evaluation of green tea quality. Especially in market transactions, the price of tea is usually determined by its appearance (Zhou et al., 2012). Human sensory evaluation is usually conducted by experts, and is also easily affected by various factors such as light, experience, psychological an...
Source: J Zhejiang Univ Sci ... - June 1, 2017 Category: Science Authors: Dong CW, Zhu HK, Zhao JW, Jiang YW, Yuan HB, Chen QS Tags: J Zhejiang Univ Sci B Source Type: research
Effects of green tea on lipid metabolism in overweight or obese people: A meta ‐analysis of randomized controlled trials
Conclusions: The meta‐analysis shows that drinking green tea can lower plasma TC and LDL levels significantly. Nevertheless, green tea's effect on plasma TG and HDL must be further evaluated by additional high‐quality and large‐scale RCTs.This article is protected by copyright. All rights reserved (Source: Molecular Nutrition and Food Research)
Source: Molecular Nutrition and Food Research - June 1, 2017 Category: Food Science Authors: Yuan Fen, Dong Hui, Fang Ke, Gong Jing, Lu fu er Tags: Research Article Source Type: research
A case of green tea (Camellia sinensis) imbibement causing possible anaphylaxis
We describe the first possible case of IgE-mediated anaphylaxis caused by imbibement of green tea. (Source: Annals of Allergy, Asthma and Immunology)
Source: Annals of Allergy, Asthma and Immunology - June 1, 2017 Category: Allergy & Immunology Authors: Shan Shan Wu, John A. Johnson, Brian Peppers, Haig Tcheurekdjian, Robert Hostoffer Tags: Letter Source Type: research
Formation and emission of linalool in tea (Camellia sinensis) leaves infested by tea green leafhopper (Empoasca (Matsumurasca) onukii Matsuda)
This study aimed to determine the formation mechanism of linalool in tea exposed to tea green leafhopper attack. The tea green leafhopper responsible for inducing the production of characteristic volatiles was identified as Empoasca (Matsumurasca) onukii Matsuda. E. (M.) onukii attack significantly induced the emission of linalool from tea leaves (p <0.05) as a result of the up-regulation of the linalool synthases (CsLIS1 and CsLIS2) (p <0.05). Continuous mechanical damage significantly enhanced CsLIS1 and CsLIS2 expression levels and linalool emission (p <0.05). Therefore, continuous wounding was a ke...
Source: Food Chemistry - June 1, 2017 Category: Food Science Source Type: research
Green tea and nonmelanoma skin cancer: Is there an association?
Green tea, a well-established source of polyphenols, has been studied judiciously over the past few decades. Numerous in vitro and animal studies have highlighted its effects on chemoprevention of nonmelanoma skin cancer (NMSC) in conjunction with its mitigating effects on UV-induced damage to the skin. However, to the authors ’ knowledge, there are no studies investigating whether a similar relationship exists in vivo with humans. The purpose of this study is to elucidate if there is a relationship linking the consumption of known chemopreventive nutrients found in freshly brewed green tea, black tea, or coffee and the ...
Source: Journal of the American Academy of Dermatology - May 31, 2017 Category: Dermatology Source Type: research
Paradigm shift of contamination risk of six heavy metals in tea (Camellia sinensis L.) growing soil: A new approach influenced by inorganic and organic amendments
Publication date: 15 September 2017 Source:Journal of Hazardous Materials, Volume 338 Author(s): Tanmoy Karak, Krishnamoni Bora, Ranjit Kumar Paul, Sampa Das, Puja Khare, Amrit Kumar Dutta, Romesh Kumar Boruah The present study provides several contamination and ecological risk indices for selected metals (Cd, Cr, Cu, Mn, Ni and Zn) in tea (Camellia sinensis L.; cv. S.3A/3) growing soil influenced by lower to higher doses of inorganic and organic amendments. While ecological risk indices were applied, it was observed that same treatment showed different risk levels but contamination risk status did not vary signif...
Source: Journal of Hazardous Materials - May 31, 2017 Category: Environmental Health Source Type: research
Effect of subchronic intake of Green Tea Extract on liver of albino rat Histomorphometric, ultrastructural and biochemical study.
CONCLUSIONS: subchronic administration of GTE resulted in structural and functional affection of the rats' liver. The dose of 250 mg/Kg/day seemed to be safe, while the doses of 500 mg and1000 mg/Kg/day had deleterious effect being more evident in the latter dose.
PMID: 28553849 [PubMed - as supplied by publisher] (Source: Folia Morphologica)
Source: Folia Morphologica - May 30, 2017 Category: Anatomy Tags: Folia Morphol (Warsz) Source Type: research
Antioxidant activity of health tea infusions and effect of sugar and milk on in-vitro availability of phenolics in tea, coffee and cocoa drinks
The objectives of this study were to analyse the content of phenolics and antioxidant activity of some health tea and also study the effect of addition of sugar and milk on in - vitro availability of phenolics in tea, cocoa and coffee drinks Design/methodology/approach Seven brands of health tea, two brands of cocoa drink, one brand each of coffee, powdered milk and sugar were selected. The tea samples were analysed for pH, titratable acidity, total phenol and antioxidant activity using Folin-Ciocalteau and 2, 2-diphenyl-1-picryl-hydrazil (DPPH) reagents, respectively. In-vitro simulated digestion modeling stomach and sma...
Source: Nutrition and Food Science - May 24, 2017 Category: Nutrition Source Type: research
What is in your cup of tea? < i > DNA Verity Test < /i > to characterize black and green commercial teas
In this study, we used several molecular techniques to develop a fast and reliable protocol (DNA Verity Test,DVT) for the characterization and confirmation of the species or taxa present in herbal infusions. As a model plant for this protocol,Camellia sinensis, a traditional tea plant, was selected due to the following reasons: its historical popularity as a (healthy) beverage, its high selling value, the importation of barely recognizable raw product (i.e., crushed), and the scarcity of studies concerning adulterants or contamination. TheDNA Verity Test includes both the sequencing of DNA barcoding markers and genotyping ...
Source: PLoS One - May 23, 2017 Category: Biomedical Science Authors: Olga De Castro Source Type: research
Molecules, Vol. 22, Pages 849: Antidiabetic Effects of Tea
Diabetes mellitus (DM) is a chronic endocrine disease resulted from insulin secretory defect or insulin resistance and it is a leading cause of death around the world. The care of DM patients consumes a huge budget due to the high frequency of consultations and long hospitalizations, making DM a serious threat to both human health and global economies. Tea contains abundant polyphenols and caffeine which showed antidiabetic activity, so the development of antidiabetic medications from tea and its extracts is increasingly receiving attention. However, the results claiming an association between tea consumption and reduced D...
Source: Molecules - May 20, 2017 Category: Chemistry Authors: Qiu-Yue Fu Qing-Sheng Li Xiao-Ming Lin Ru-Ying Qiao Rui Yang Xu-Min Li Zhan-Bo Dong Li-Ping Xiang Xin-Qiang Zheng Jian-Liang Lu Cong-Bo Yuan Jian-Hui Ye Yue-Rong Liang Tags: Review Source Type: research
Molecular insights into the differences in anti-inflammatory activities of green tea catechins on IL-1 β signaling in rheumatoid arthritis synovial fibroblasts.
In this study, we found that catechins found in green tea (EGCG, EGC, and EC) differentially interfere with the IL-1β signaling pathway which regulates the expression of pro-inflammatory mediators (IL-6 and IL-8) and Cox-2 in primary human rheumatoid arthritis synovial fibroblasts (RASFs). EGCG and EGC inhibited IL-6, IL-8, and MMP-2 production and selectively inhibited Cox-2 expression. EC did not exhibit any inhibitory effects. When we looked at the expression of key signaling proteins in the IL-1β signaling pathway, we found all the tested catechins could inhibit TAK-1 activity. Therefore, the consumption of green tea...
Source: Toxicology and Applied Pharmacology - May 19, 2017 Category: Toxicology Authors: Fechtner S, Singh A, Chourasia M, Ahmed S Tags: Toxicol Appl Pharmacol Source Type: research
