Characterization and Health Benefits of Bioactive Compounds in Tea and Tea Products

A special issue of Foods (ISSN 2304-8158). This special issue belongs to the section "Nutraceuticals, Functional Foods, and Novel Foods".

Deadline for manuscript submissions: closed (20 November 2021) | Viewed by 4891

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Department of Chemistry and Biochemistry, Southwestern University, 1001 E. University Ave., Georgetown, TX 78626, USA
Interests: phenolic compounds; Lamiaceae family herbs; antioxidant properties; anthocyanins
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Special Issue Information

Dear Colleagues,

Tea is one of the most popular beverages worldwide, and its consumption has been associated with a range of reported health benefits. Although tea may be prepared from herbal blends of various flowers, spices, and plants, true tea is produced from the Camellia sinensis bush by harvesting, drying, and processing its leaves or leaf buds. Leaves of the tea plant contain high concentrations of flavonoids and other phenolic compounds, secondary plant metabolites that can also act as antioxidants. When tea is brewed or used to make food products, these bioactive compounds may confer a range of protective properties when consumed as part of the human diet, particularly against diseases related to oxidative stress.

This Special Issue invites research to characterize the bioactive compounds found within all varieties of tea as well as tea-based functional foods and other related products. Papers may focus on the development of novel methods for tea analysis, identifying bioactive tea components, or determining the relationship between tea chemical composition and resulting antioxidant properties. Assessment of the health-promoting properties of bioactive compounds found within tea and its related products, including studies of bioavailability, bioaccessibility, and mechanisms of action, are also welcome. Submissions may either provide a review of the scientific literature or describe original research.

Prof. Dr. Emily D. Niemeyer
Guest Editor

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Keywords

  • tea
  • camellia sinensis
  • flavonoids
  • phenolic compounds
  • antioxidants
  • chemical analysis
  • bioavailability
  • analytical methods
  • health effects

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Published Papers (1 paper)

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Research

25 pages, 4593 KiB  
Article
Effects of Tea against Alcoholic Fatty Liver Disease by Modulating Gut Microbiota in Chronic Alcohol-Exposed Mice
by Bangyan Li, Qianqian Mao, Dandan Zhou, Min Luo, Renyou Gan, Hangyu Li, Siyu Huang, Adila Saimaiti, Ao Shang and Huabin Li
Foods 2021, 10(6), 1232; https://doi.org/10.3390/foods10061232 - 28 May 2021
Cited by 33 | Viewed by 4414
Abstract
Gut microbiota dysbiosis has been a crucial contributor to the pathogenesis of alcoholic fatty liver disease (AFLD). Tea is a popular beverage worldwide and exerts antioxidant and anti-inflammatory activities, as well as hepatoprotective effects. However, the potential role of gut microbiota regulated by [...] Read more.
Gut microbiota dysbiosis has been a crucial contributor to the pathogenesis of alcoholic fatty liver disease (AFLD). Tea is a popular beverage worldwide and exerts antioxidant and anti-inflammatory activities, as well as hepatoprotective effects. However, the potential role of gut microbiota regulated by tea in the prevention and management of AFLD remains unclear. Here, the protective effects of oolong tea, black tea, and dark tea on AFLD and its regulation of gut microbiota in chronic alcohol-exposed mice were explored and investigated. The results revealed that tea supplementation significantly prevented liver steatosis, decreased oxidative stress and inflammation, and modulated gut microbiota in chronic alcohol-exposed mice, especially oolong tea and dark tea. However, black tea showed less effectiveness against liver injury caused by alcohol. Moreover, the diversity, structure and composition of chronic alcohol-disrupted gut microbiota were restored by the supplementation of oolong tea and dark tea based on the analysis of gut microbiota. Furthermore, the relationship between liver injury biochemical indicators and gut microbiota indicated that some specific bacteria, such as Bacteroides, Alloprevotella, and Parabacteroides were closely associated with AFLD. In addition, the phytochemical components in tea extracts were measured by high-performance liquid chromatography, which could contribute to preventive effects on AFLD. In summary, oolong tea and dark tea could prevent chronic alcohol exposure-induced AFLD by modulating gut microbiota. Full article
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