Biological Function of Plant Tannin and Its Application in Animal Health

Abstract

Plant tannins are widely found in plants and can be divided into hydrolyzed tannins and condensed tannins. In recent years, researchers have become more and more interested in using tannin-rich plants and plant extracts in ruminant diets to improve the quality of animal products. Some research results show that plant tannins can effectively improve the quality of meat and milk, and enhance the oxidative stability of the product. In this paper, the classification and extraction sources of plant tannins are reviewed, as well as the biological functions of plant tannins in animals. The antioxidant function of plant tannins is discussed, and the influence of their structure on antioxidation is analyzed. The effects of plant tannins against pathogenic bacteria and the mechanism of action are discussed, and the relationship between antibacterial action and antioxidant action is analyzed. The inhibitory effect of plant tannins on many kinds of pathogenic viruses and their action pathways are discussed, as are the antiparasitic properties of plant tannins. The anti-inflammatory action of tannins and its mechanism are analyzed. The function of plant tannins in antidiarrheal action and its influencing factors are discussed. In addition, the effects of plant tannins as feed additives on animals and the influencing factors are reviewed in this paper to provide a reference for further research.

The Influence of Harvest Moment and Cultivar on Variability of Some Chemical Constituents and Antiradical Activity of Dehydrated Chokeberry Pomace

“…According to Gülçin et al [54], the antioxidant activity of tannins is related to their molecular weight, i.e., the number and degree of polymerization of hydroxyl groups [55]. Carotenoids belong to the group of fat-soluble pigments, capture peroxyl radicals and act predominantly as antioxidants [56].…”

Nutrients, Phytochemical, Antioxidant and Antimicrobial Analysis of Pterocarpus osun Stem Bark and Leaf for Their Nutritional, Medicinal Capacity

“…The result of the quantitative phytochemical analysis of the plant parts (Table 3 and Figure 2) showed that the stem bark and the leaf have tannins values as 10.220 mg/g and 10.100 mg/g respectively. Studies have shown that tannins possess antidiarrhoeal (Rani et al, (1999); Mbagwu & Adeyemi, (2008);Amabeoku, (2009); Tian et al, (2009); Yang et al, (2017); Bonelli et al, (2018); anti-inflammatory (Wijesinghe et al, 2013); antiparasitic (Minho, Gennari, Amarante, & Abdala, 2010); and antimicrobial activities (Dall'Agnol et al, 2003); Corrales, Han, & Tauscher, (2009); Tong, He, Fan, & Guo, (2022). The result of the quantitative phytochemical analysis of the plant parts (Table 3 and Figure 2) showed that the stem bark and the leaf have tannins values as 10.220 mg/g and 10.100 mg/g respectively.…”

“…The result of the quantitative phytochemical analysis of the plant parts (Table 3 and Figure 2) showed that the stem bark and the leaf have tannins values as 10.220 mg/g and 10.100 mg/g respectively. Studies have shown that tannins possess antidiarrhoeal (Rani et al, (1999); Mbagwu & Adeyemi, (2008);Amabeoku, (2009); Tian et al, (2009); Yang et al, (2017); Bonelli et al, (2018); anti-inflammatory (Wijesinghe et al, 2013); antiparasitic (Minho, Gennari, Amarante, & Abdala, 2010); and Guo, (2022). The appreciable quantities of tannin in samples may confer the aforementioned properties on the samples.…”

“…This plant's parts are effective against multidrug-resistant microbes like S. aureus, E. coli, VRE, C. tropicalis, C. krusei. Many plants have been used because of their antimicrobial traits, which are due to compounds synthesized in the secondary metabolites of the plant such as tannin and phenol (Janssen, Scheffer, & Svendsen, (1987); Saxena, McCutcheon, Farmer, Towers, & Hancock, (1994); Corrales et al, (2009); Tong et al, (2022).…”

Effects of Zymosan on Short-Chain Fatty Acid and Gas Production in in vitro Fermentation Models of the Human Intestinal Microbiota

“…For instance, yeast glucans from yeast cell walls were associated with many prebiotic roles, including anti-tumor, constipation relieving, cholesterol lowering, and gastrointestinal regulation. As an immune enhancer, zymosan is widely used as a feed additive in the field of aquaculture and animal husbandry ( 5 , 6 ). Besides, it has also been used as a thickener and emulsifier in industries ( 7 ).…”