Sustainable management of tea wastes: resource recovery and conversion techniques

Duarah, Prangan; Haldar, Dibyajyoti; Singhania, Reeta Rani; Dong, Cheng-Di; Patel, Anil Kumar; Purkait, Mihir Kumar

doi:10.1080/07388551.2022.2157701

Cited by 11 publications

(1 citation statement)

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“…Tea, for example, generates a significant amount of byproducts during processing, which contain abundant active ingredients such as polyphenols, polysaccharides, and catechins. As a result, tea extracts and other derivatives are being increasingly applied in the pharmaceutical and food industries (Duarah et al, 2023). Polyphenols, such as epicatechin and epigallocatechin gallate, are major components found in tea.…”

Section: Introductionmentioning

confidence: 99%

Dried tea residue can alter the blood metabolism and the composition and functionality of the intestinal microbiota in Hu sheep

Guo,

Yu,

Cao

et al. 2023

Front. Microbiol.

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Ruminant animals face multiple challenges during the rearing process, including immune disorders and oxidative stress. Green tea by-products have gained widespread attention for their significant immunomodulatory and antioxidant effects, leading to their application in livestock production. In this study, we investigated the effects of Dried Tea Residue (DTR) as a feed additive on the growth performance, blood biochemical indicators, and hindgut microbial structure and function of Hu sheep. Sixteen Hu sheep were randomly divided into two groups and fed with 0 and 100 g/d of DTR, respectively. Data were recorded over a 56-day feeding period. Compared to the control group, there were no significant changes in the production performance of Hu sheep fed with DTR. However, the sheep fed with DTR showed a significant increase in IgA (p < 0.001), IgG (p = 0.005), IgM (p = 0.003), T-SOD (p = 0.013), GSH-Px (p = 0.005), and CAT (p < 0.001) in the blood, along with a significant decrease in albumin (p = 0.019), high density lipoprotein (p = 0.050), and triglyceride (p = 0.021). DTR supplementation enhanced the fiber digestion ability of hindgut microbiota, optimized the microbial community structure, and increased the abundance of carbohydrate-digesting enzymes. Therefore, DTR can be used as a natural feed additive in ruminant animal production to enhance their immune and antioxidant capabilities, thereby improving the health status of ruminant animals.

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Section: Introductionmentioning

confidence: 99%