Mothers' Consumption of Soy Drink But Not Black Tea Increases the Flavonoid Content of Term Breast Milk: A Pilot Randomized, Controlled Intervention Study
Conclusions: Mothers' daily consumption of a soy drink considerably increases isoflavone content of breast milk resulting in an estimated daily exposure of 9.6 nmol isoflavones in a 4-month-old suckling infant. Luminal flavanol uptake from black tea consumed by the nursing mother may be too low to affect flavanol concentrations in breast milk.Ann Nutr Metab 2017;70:147-153 (Source: Annals of Nutrition and Metabolism)
Source: Annals of Nutrition and Metabolism - April 11, 2017 Category: Nutrition Source Type: research
Functional characterizations of β-glucosidases involved in aroma compound formation in tea (Camellia sinensis)
This study provides the first evidence of Csβ-Glus in tea leaves, and will advance understanding of tea aroma formation. Graphical abstract (Source: Food Research International)
Source: Food Research International - April 5, 2017 Category: Food Science Source Type: research
Probable benefits of green tea with genetic implications
Kavita Singhal, Neerja Raj, Khushboo Gupta, Saurabh SinghJournal of Oral and Maxillofacial Pathology 2017 21(1):107-114
Tea is produced from the Camellia sinensis plant and can generally be divided into categories based on how they are processed. In general, green tea that is unfermented C. sinensis has been considered superior to black tea in health benefits. It contains a unique set of catechins that possess biological activity as antioxidant, anti-inflammatory and antiproliferative, which is potentially significant to the prevention and treatment of various forms of diseases. Oral cavity oxidative stress and inflammati...
Source: Journal of Oral and Maxillofacial Pathology - April 5, 2017 Category: ENT & OMF Authors: Kavita Singhal Neerja Raj Khushboo Gupta Saurabh Singh Source Type: research
Lipid-soluble green tea extract: Genotoxicity and subchronic toxicity studies.
Abstract
To assess the potential safety of lipid soluble green tea extract also referred to as Lipid soluble tea polyphenols (LSTP), a series of genotoxicity tests were conducted, including an Ames, in vivo mouse micronucleus, and in vivo mouse sperm abnormality tests. The toxicity of LSTP was evaluated in 90- and 30-day feeding studies. LSTP did not show mutagenic activity in the Ames test and no genotoxic potential in the in vivo assays at doses up to 20 g/kg body weight (bw). In the 90-day feeding study, LSTP was given in the diet at levels providing 0, 0.125, 0.25, or 0.50 g/kg bw/day. No significan...
Source: Regulatory Toxicology and Pharmacology : RTP - April 4, 2017 Category: Toxicology Authors: Liu Z, Liu D, Cheng J, Mei S, Fu Y, Lai W, Wang Y, Xu Y, Vo TD, Lynch BS Tags: Regul Toxicol Pharmacol Source Type: research
Coffee in the Morning, Tea in the Afternoon?
It may seem ironic that before I sat down to write this editorial for JNEB, I first brewed a cup of tea. It is late afternoon on a Friday, and the tea is warm; smelling and tasting great. I like tea in the afternoons, but mornings don't work without my coffee. I like that smell and taste as well, although I've scaled back from the dark roast to a medium. So, what does my trivia have to do with nutrition education and behavior? Caffeine. (Source: Journal of Nutrition Education and Behavior)
Source: Journal of Nutrition Education and Behavior - April 1, 2017 Category: Nutrition Authors: Karen Chapman-Novakofski Tags: From JNEB Source Type: research
A simple, enzymatic biotransformation method using fresh green tea leaves efficiently generates theaflavin-containing fermentation water that has potent physiological functions in mice and humans.
Abstract
The polyphenolic compound theaflavin, the main red pigment in black tea, possesses many beneficial properties, such as fat-reducing and glucose-lowering capabilities. To produce theaflavin-containing fermentation water on a large scale, we have developed a simple, inexpensive, and selective enzymatic biotransformation method to obtain sufficient levels from fresh green tea leaves. Subsequent administration of theaflavin-containing fermentation water to obese mice on a high-fat diet inhibited body weight gain, decreased casual blood glucose and fasting blood glucose levels, and lowered mesenteric a...
Source: Biological and Pharmaceutical Bulletin - April 1, 2017 Category: Drugs & Pharmacology Authors: Takemoto M, Takemoto H, Kouno H, Soeda T, Moriya T Tags: Biol Pharm Bull Source Type: research
Effect of black tea consumption on radial blood pulse spectrum and cognitive health.
This report confirmed that black tea consumption (dose=0.05g/Kg) significantly increased third, fifth, (P<0.1), sixth, seventh, and eighth harmonics (p<0.05) of radial pressure wave comparing to water control. We proposed that black tea may increase cerebral blood flow (CBF), which was deduced from the results and from the conclusions of previous studies. The results also showed that the harmonic components of pressure pulse could be the vascular kinetic index that assessed the hemodynamic status in each time frame before and after consumption of black tea.
PMID: 28434461 [PubMed - in process] (Source: Comple...
Source: Complementary Therapies in Medicine - April 1, 2017 Category: Complementary Medicine Authors: Chang CW, Wang SH, Jan MY, Wang WK Tags: Complement Ther Med Source Type: research
Formation of (E)-nerolidol in tea (Camellia sinensis) leaves exposed to multiple stresses during tea manufacturing
This study aimed to determine the formation mechanism of (E)-nerolidol in tea exposed to multiple stresses during tea manufacture. C. sinensis (E)-nerolidol synthase (CsNES) recombinant protein, found in the cytosol, was found to transform farnesyl diphosphate into (E)-nerolidol. CsNES was highly expressed during the oolong tea turn over process, resulting in (E)-nerolidol accumulation. Continuous mechanical damage, simulating the turn over process, significantly enhanced CsNES expression level and (E)-nerolidol content. The combination of low temperature stress and mechanical damage had a synergistic effect on (E)-nerolid...
Source: Food Chemistry - March 31, 2017 Category: Food Science Source Type: research
Structural characterization and evaluation of the antioxidant activities of polysaccharides extracted from Qingzhuan brick tea.
Abstract
The crude tea polysaccharides (CTPS) from Qingzhuan brick tea(QZBT) were extracted and fractionated to afford two fractions, namely TPS-1 and TPS-2. Analyses were conducted concerning the structural characterization and antioxidant activities of these samples. Component analysis revealed that the carbohydrate, uronic acid, protein and polyphenol contents of these samples differed significantly. Fourier transform infrared analysis showed that these samples showed similar characteristic absorption peaks for polysaccharides. Ultraviolet-visible spectroscopy, circular dichroism, scanning electron micr...
Source: International Journal of Biological Macromolecules - March 31, 2017 Category: Biochemistry Authors: Yang X, Huang M, Qin C, Lv B, Mao Q, Liu Z Tags: Int J Biol Macromol Source Type: research
Aluminum induced physiological and proteomic responses in tea (Camellia sinensis) roots and leaves
Publication date: June 2017 Source:Plant Physiology and Biochemistry, Volume 115 Author(s): Qingshan Xu, Yu Wang, Zhaotang Ding, Kai Fan, Dexin Ma, Yongliang Zhang, Qi Yin Tea (Camellia sinensis (L.) O. Kuntze), is an aluminum (Al) hyperaccumulator and grows well in acid soils. Although Al-induced growth of tea plant has been studied, the proteomic profiles of tea plants in response to Al are unclear. In the present study, the proteomic profiles in tea roots and leaves under Al stress were investigated using iTRAQ proteomics approach. In total, 755 and 1059 differentially expressed proteins were identified in tea ...
Source: Plant Physiology and Biochemistry - March 30, 2017 Category: Biochemistry Source Type: research
Molecules, Vol. 22, Pages 560: Effective Subcritical Butane Extraction of Bifenthrin Residue in Black Tea
As a natural and healthy beverage, tea is widely enjoyed; however, the pesticide residues in tea leaves affect the quality and food safety. To develop a highly selective and efficient method for the facile removal of pesticide residues, the subcritical butane extraction (SBE) technique was employed, and three variables involving temperature, time and extraction cycles were studied. The optimum SBE conditions were found to be as follows: extraction temperature 45 °C, extraction time 30 min, number of extraction cycles 1, and in such a condition that the extraction efficiency reached as high as 92%. Further, the catechins, ...
Source: Molecules - March 30, 2017 Category: Chemistry Authors: Yating Zhang Lingbiao Gu Fei Wang Lingjun Kong Guangyong Qin Tags: Article Source Type: research
Molecules, Vol. 22, Pages 548: Black Tea High-Molecular-Weight Polyphenol-Rich Fraction Promotes Hypertrophy during Functional Overload in Mice
Mitochondria activation factor (MAF) is a high-molecular-weight polyphenol extracted from black tea that stimulates training-induced 5 ′ adenosine monophosphate-activated protein kinase (AMPK) activation and improves endurance capacity. Originally, MAF was purified from black tea using butanol and acetone, making it unsuitable for food preparation. Hence, we extracted a MAF-rich sample “E80” from black tea, using ethanol and water only. Here, we examined the effects of E80 on resistance training. Eight-week old C57BL/6 mice were fed with a normal diet or a diet containing 0.5% E80 for 4, 7 and 14 days under condition...
Source: Molecules - March 29, 2017 Category: Chemistry Authors: Yuki Aoki Tetsuo Ozawa Tohru Takemasa Osamu Numata Tags: Article Source Type: research
A new cineol derivative, polyphenols and norterpenoids from Saharan myrtle tea (Myrtus nivellei): Isolation, structure determination, quantitative determination and antioxidant activity.
Abstract
The phytochemical profile of decoction and infusion, obtained from the dried leaves of M. nivellei, consumed as tea in Saharan region, was characterized by UHPLC-PDA-HRMS. Fourteen compounds were characterized and, to confirm the proposed structures a preparative procedure followed by NMR spectroscopy was applied. Compound 3 (2-hydroxy-1,8-cineole disaccharide) was a never reported whereas a bycyclic monoterpenoid glucoside (2), two ionol glucosides (1 and 12), a tri-galloylquinic acid (4), two flavonol glycosides (5 and 9), and a tetra-galloylglucose (7), were reported in Myrtus spp. for the firs...
Source: Fitoterapia - March 28, 2017 Category: Biochemistry Authors: Mansour A, Celano R, Mencherini T, Picerno P, Piccinelli AL, Foudil-Cherif Y, Csupor D, Rahili G, Yahi N, Nabavi SM, Aquino RP, Rastrelli L Tags: Fitoterapia Source Type: research
Effects of green tea supplementation on inflammation markers, antioxidant status and blood pressure in NaCl-induced hypertensive rat model.
Conclusions: Supplementation of green tea has a beneficial effect on blood pressure, markers of inflammation and antioxidant status in an experimental model of hypertension.
PMID: 28326006 [PubMed - in process] (Source: Food and Nutrition Research)
Source: Food and Nutrition Research - March 24, 2017 Category: Nutrition Authors: Szulińska M, Stępień M, Kręgielska-Narożna M, Suliburska J, Skrypnik D, Bąk-Sosnowska M, Kujawska-Łuczak M, Grzymisławska M, Bogdański P Tags: Food Nutr Res Source Type: research
Consumption of green tea epigallocatechin-3-gallate enhances systemic immune response, antioxidative capacity and HPA axis functions in aged male swiss albino mice.
Abstract
The present investigation assessed the potential of green tea phytochemical epigallocatechin-3-gallate (EGCG) in alleviating age-associated aberrations in immunity, hypothalamus-pituitary-adrenal (HPA) axis and redox homeostasis using 16 months old male Swiss albino mice. Four groups of animals (n = 6 per group) were supplemented with either aqueous EGCG at 25, 50 and 100 mg/kg/animal or vehicle control for 6 weeks. A concurrent analysis of CD4(+) and CD8(+) lymphocytes in splenocytes, differential leucocyte population, T cell differentiation markers in peripheral blood mononuclear cells (PBMC...
Source: Biogerontology - March 24, 2017 Category: Geriatrics Authors: Sharma R, Sharma A, Kumari A, Kulurkar PM, Raj R, Gulati A, Padwad YS Tags: Biogerontology Source Type: research
