Dynamic Chemistry of Tannins
Yakugaku Zasshi. 2024;144(2):183-195. doi: 10.1248/yakushi.23-00170.ABSTRACTTannins are a group of polyphenols that possess the ability to precipitate proteins, causing an undesirable astringent taste by interacting with salivary peptides. This interaction deactivates the digestive enzymes; therefore, tannins are considered as plant defense substances. The health benefits of tannins and related polyphenols in foods and beverages have been demonstrated by biological and epidemiological studies; however, their metabolism in living plants and the chemical changes observed during processing of foods and medicinal herbs raises ...
Source: Yakugaku Zasshi : Journal of the Pharmaceutical Society of Japan - January 31, 2024 Category: Drugs & Pharmacology Authors: Takashi Tanaka Source Type: research
Dynamic Chemistry of Tannins
Yakugaku Zasshi. 2024;144(2):183-195. doi: 10.1248/yakushi.23-00170.ABSTRACTTannins are a group of polyphenols that possess the ability to precipitate proteins, causing an undesirable astringent taste by interacting with salivary peptides. This interaction deactivates the digestive enzymes; therefore, tannins are considered as plant defense substances. The health benefits of tannins and related polyphenols in foods and beverages have been demonstrated by biological and epidemiological studies; however, their metabolism in living plants and the chemical changes observed during processing of foods and medicinal herbs raises ...
Source: Yakugaku Zasshi : Journal of the Pharmaceutical Society of Japan - January 31, 2024 Category: Drugs & Pharmacology Authors: Takashi Tanaka Source Type: research
Dynamic Chemistry of Tannins
Yakugaku Zasshi. 2024;144(2):183-195. doi: 10.1248/yakushi.23-00170.ABSTRACTTannins are a group of polyphenols that possess the ability to precipitate proteins, causing an undesirable astringent taste by interacting with salivary peptides. This interaction deactivates the digestive enzymes; therefore, tannins are considered as plant defense substances. The health benefits of tannins and related polyphenols in foods and beverages have been demonstrated by biological and epidemiological studies; however, their metabolism in living plants and the chemical changes observed during processing of foods and medicinal herbs raises ...
Source: Yakugaku Zasshi : Journal of the Pharmaceutical Society of Japan - January 31, 2024 Category: Drugs & Pharmacology Authors: Takashi Tanaka Source Type: research
Dynamic Chemistry of Tannins
Yakugaku Zasshi. 2024;144(2):183-195. doi: 10.1248/yakushi.23-00170.ABSTRACTTannins are a group of polyphenols that possess the ability to precipitate proteins, causing an undesirable astringent taste by interacting with salivary peptides. This interaction deactivates the digestive enzymes; therefore, tannins are considered as plant defense substances. The health benefits of tannins and related polyphenols in foods and beverages have been demonstrated by biological and epidemiological studies; however, their metabolism in living plants and the chemical changes observed during processing of foods and medicinal herbs raises ...
Source: Yakugaku Zasshi : Journal of the Pharmaceutical Society of Japan - January 31, 2024 Category: Drugs & Pharmacology Authors: Takashi Tanaka Source Type: research
Dynamic Chemistry of Tannins
Yakugaku Zasshi. 2024;144(2):183-195. doi: 10.1248/yakushi.23-00170.ABSTRACTTannins are a group of polyphenols that possess the ability to precipitate proteins, causing an undesirable astringent taste by interacting with salivary peptides. This interaction deactivates the digestive enzymes; therefore, tannins are considered as plant defense substances. The health benefits of tannins and related polyphenols in foods and beverages have been demonstrated by biological and epidemiological studies; however, their metabolism in living plants and the chemical changes observed during processing of foods and medicinal herbs raises ...
Source: Yakugaku Zasshi : Journal of the Pharmaceutical Society of Japan - January 31, 2024 Category: Drugs & Pharmacology Authors: Takashi Tanaka Source Type: research
Dynamic Chemistry of Tannins
Yakugaku Zasshi. 2024;144(2):183-195. doi: 10.1248/yakushi.23-00170.ABSTRACTTannins are a group of polyphenols that possess the ability to precipitate proteins, causing an undesirable astringent taste by interacting with salivary peptides. This interaction deactivates the digestive enzymes; therefore, tannins are considered as plant defense substances. The health benefits of tannins and related polyphenols in foods and beverages have been demonstrated by biological and epidemiological studies; however, their metabolism in living plants and the chemical changes observed during processing of foods and medicinal herbs raises ...
Source: Yakugaku Zasshi : Journal of the Pharmaceutical Society of Japan - January 31, 2024 Category: Drugs & Pharmacology Authors: Takashi Tanaka Source Type: research
Dynamic Chemistry of Tannins
Yakugaku Zasshi. 2024;144(2):183-195. doi: 10.1248/yakushi.23-00170.ABSTRACTTannins are a group of polyphenols that possess the ability to precipitate proteins, causing an undesirable astringent taste by interacting with salivary peptides. This interaction deactivates the digestive enzymes; therefore, tannins are considered as plant defense substances. The health benefits of tannins and related polyphenols in foods and beverages have been demonstrated by biological and epidemiological studies; however, their metabolism in living plants and the chemical changes observed during processing of foods and medicinal herbs raises ...
Source: Yakugaku Zasshi : Journal of the Pharmaceutical Society of Japan - January 31, 2024 Category: Drugs & Pharmacology Authors: Takashi Tanaka Source Type: research
Screening Commercial Tea for Rapid Inactivation of Infectious SARS-CoV-2 in Saliva
The objective of this study was to identify commercially available teas that can rapidly inactivate infectious SARS-CoV-2 in saliva. Initially, tea (n = 24) was prepared as 40 mg/mL infusions and incubated with SARS-CoV-2 resuspended in water, for 5 min at 37 °C. Then, five teas that showed >3 log reduction in virus infectivity were further investigated at 40 and 10 mg/mL infusions for 60 and 10 s contact time with SARS-CoV-2 resuspended in saliva. Tea polyphenols were measured using the Folin-Ciocalteu assay. SARS-CoV-2 infectivity was quantified on Vero-E6 cell line using TCID50 assay. At 10 mg/mL infusion, bla...
Source: Food and Environmental Virology - January 31, 2024 Category: Virology Source Type: research
Molecules, Vol. 29, Pages 565: Artificial Intelligence Sensing: Effective Flavor Blueprinting of Tea Infusions for a Quality Control Perspective
erico Magagna
Tea infusions are the most consumed beverages in the world after water; their pleasant yet peculiar flavor profile drives consumer choice and acceptance and becomes a fundamental benchmark for the industry. Any qualification method capable of objectifying the product’s sensory features effectively supports industrial quality control laboratories in guaranteeing high sample throughputs even without human panel intervention. The current study presents an integrated analytical strategy acting as an Artificial Intelligence decision tool for black tea infusion aroma and taste blueprinting. Key ma...
Source: Molecules - January 23, 2024 Category: Chemistry Authors: Andrea Caratti Angelica Fina Fulvia Trapani Carlo Bicchi Erica Liberto Chiara Cordero Federico Magagna Tags: Article Source Type: research
Determination of copper and cobalt in different tea samples at trace levels by FAAS after preconcentration with a novel iron PAMAM-OH-encapsulated magnetic nanoparticle as SPE sorbent
Anal Sci. 2024 Jan 22. doi: 10.1007/s44211-023-00495-2. Online ahead of print.ABSTRACTEnvironmental contamination caused by heavy metals is a significant global concern. The presented study investigated the efficiency of iron PAMAM-OH encapsulated magnetic nanoparticles (Fe-MNP-G2-OH) as sorbent for the preconcentration of copper and cobalt from tea samples. High metal-chelating ethylenediamine core polyamidoethanol generation-2 (PAMAM-G2-OH) was encapsulated with iron oxide (Fe3O4) to synthesize the sorbent. Limit of detection (LOD) values for copper and cobalt extracted and detected by the developed Fe-MNP-G2-OH -SPE-FAA...
Source: Analytical Sciences : the international journal of the Japan Society for Analytical Chemistry - January 22, 2024 Category: Chemistry Authors: Özge Yılmaz İkbal Koyuncu Source Type: research
Determination of copper and cobalt in different tea samples at trace levels by FAAS after preconcentration with a novel iron PAMAM-OH-encapsulated magnetic nanoparticle as SPE sorbent
Anal Sci. 2024 Jan 22. doi: 10.1007/s44211-023-00495-2. Online ahead of print.ABSTRACTEnvironmental contamination caused by heavy metals is a significant global concern. The presented study investigated the efficiency of iron PAMAM-OH encapsulated magnetic nanoparticles (Fe-MNP-G2-OH) as sorbent for the preconcentration of copper and cobalt from tea samples. High metal-chelating ethylenediamine core polyamidoethanol generation-2 (PAMAM-G2-OH) was encapsulated with iron oxide (Fe3O4) to synthesize the sorbent. Limit of detection (LOD) values for copper and cobalt extracted and detected by the developed Fe-MNP-G2-OH -SPE-FAA...
Source: Anal Sci - January 22, 2024 Category: Chemistry Authors: Özge Yılmaz İkbal Koyuncu Source Type: research
Measuring diet by metabolomics: a 14-d controlled feeding study of weighed food intake
CONCLUSIONS: Metabolite levels had moderate to strong correlations with weighed intake of habitually consumed foods, beverages, and supplements. These findings exceed in magnitude those previously observed in population studies and exemplify the strong potential of metabolomics to contribute to nutrition research. The Women's Health Initiative is registered at clinicaltrials.gov as NCT00000611.PMID:38212160 | DOI:10.1016/j.ajcnut.2023.10.016 (Source: The American Journal of Clinical Nutrition)
Source: The American Journal of Clinical Nutrition - January 11, 2024 Category: Nutrition Authors: Mary C Playdon Lesley F Tinker Ross L Prentice Erikka Loftfield Kathleen M Hayden Linda Van Horn Joshua N Sampson Rachael Stolzenberg-Solomon Johanna W Lampe Marian L Neuhouser Steven C Moore Source Type: research
Measuring diet by metabolomics: a 14-d controlled feeding study of weighed food intake
CONCLUSIONS: Metabolite levels had moderate to strong correlations with weighed intake of habitually consumed foods, beverages, and supplements. These findings exceed in magnitude those previously observed in population studies and exemplify the strong potential of metabolomics to contribute to nutrition research. The Women's Health Initiative is registered at clinicaltrials.gov as NCT00000611.PMID:38212160 | DOI:10.1016/j.ajcnut.2023.10.016 (Source: Am J Clin Nutr)
Source: Am J Clin Nutr - January 11, 2024 Category: Nutrition Authors: Mary C Playdon Lesley F Tinker Ross L Prentice Erikka Loftfield Kathleen M Hayden Linda Van Horn Joshua N Sampson Rachael Stolzenberg-Solomon Johanna W Lampe Marian L Neuhouser Steven C Moore Source Type: research
Theaflavin pretreatment ameliorates renal ischemia/reperfusion injury by attenuating apoptosis and oxidative stress in vivo and in vitro
Biomed Pharmacother. 2024 Jan 2;171:116114. doi: 10.1016/j.biopha.2023.116114. Online ahead of print.ABSTRACTOxidative stress-induced apoptosis is an important pathological process in renal ischemia/reperfusion injury (RIRI). Theaflavin (TF) is the main active pigment and polyphenol in black tea. It has been widely reported because of its biological activity that can reduce oxidative stress and protect against many diseases. Here, we explored the role of theaflavin in the pathological process of RIRI. In the present study, the RIRI model of 45 min ischemia and 24 h reperfusion was established in C57BL/6 J male mice, and th...
Source: Biomedicine and pharmacotherapy = Biomedecine and pharmacotherapie - January 3, 2024 Category: Drugs & Pharmacology Authors: Jianning Zhu Hao Shen Guohao Li Lin Chen Peng Kang Yonglian Guo Zhongyuan Li Source Type: research
Investigation the effect of nanocarbon tube prepared from tea waste on microstructure and properties of cement mortar
Environ Sci Pollut Res Int. 2023 Dec 26. doi: 10.1007/s11356-023-31606-1. Online ahead of print.ABSTRACTEnvironmental contamination and the massive high cost of waste disposal have been a huge concern for scholars throughout the globe, prompting them to alternatives of recycling waste materials in various implementation fields. The rising expenditure on disposal and the shortage of naturally main resources such as aggregate have increased interest in reusing recycled waste materials to manufacture concrete and mortar. The annual consumption of a country's population of hundreds of tons of black tea results in considerable ...
Source: Environmental Science and Pollution Research International - December 25, 2023 Category: Environmental Health Authors: Mohammad I Al Biajawi May F Abdulrahman Wahran M Saod Nahla Hilal Rahimah Embong Nadhim Hamah Sor Source Type: research
