Review on structure modification of plant tannins

doi:10.11949/0438-1157.20201355

Abstract

Abstract:

As a kind of natural polyphenols, plant tannins are widely present in various tissues of plants. The structure of tannins are complex and diverse, and there are a large number of active groups such as phenolic hydroxyl groups, ester groups and ether groups, which can be combined with various substances to have the effects of anti-oxidation, ion adsorption and leather tanning. Plant tannins as a kind of functional material is widely used in pharmaceutical processing, food production, sewage treatment and other industries. However, natural plant tannins also have their inherent shortcomings, such as large molecular weight and poor fat solubility. Based on this, domestic and foreign scholars have been exploring the suitable tannin structure modification methods, so that this natural biomass resource can be more efficiently used in the industrial production. Based on the structure of tannin, this paper summarizes the structural modification methods of tannin in recent years and provides a reference for the high-value utilization of tannins.

Key words: plant tannins, sustainability, chemical processes, production, composites

摘要：

植物单宁作为一种天然多酚类物质，广泛存在于多种植物的各组织部位中。单宁的结构复杂多样，含有大量的酚羟基、酯基、醚基等活性基团，可以和多种物质结合从而具有抗氧化、离子吸附及皮革鞣制等作用。这使得植物单宁这一功能材料，在医药加工、食品生产、污水处理等行业中应用广泛。然而天然的单宁类成分也存在着其结构上的固有不足之处，如分子量大、脂溶性差等。基于此，国内外的学者一直在探索寻找合适的单宁结构改性方法，从而改善单宁的渗透性、溶解性及反应活性等，使其能更加充分地用于工业生产中。以单宁的组成结构为基础，综述了近年来有关单宁的结构改性方法，并对其进行了展望，以期为单宁的结构修饰及高值化利用提供有益参考。

关键词: 植物单宁, 可持续性, 化学过程, 生产, 复合材料

CLC Number:

TQ 35

GUO Linxin, MA Yangmin, QIANG Taotao, REN Longfang. Review on structure modification of plant tannins[J]. CIESC Journal, 2021, 72(5): 2448-2464.

郭林新, 马养民, 强涛涛, 任龙芳. 植物单宁的结构改性研究进展[J]. 化工学报, 2021, 72(5): 2448-2464.

Figures/Tables 2

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