Liaoning Key Laboratory of Lignocellulose Chemistry and Biomaterials, Dalian Polytechnic University, Dalian, Liaoning 116034, China.
Pharmacy College of Changchun University of Traditional Chinese Medicine, Changchun 130117, China.
Int J Biol Macromol. 2021 Dec 1;192:498-505. doi: 10.1016/j.ijbiomac.2021.09.182. Epub 2021 Oct 5.
Acanthopanax senticosus has been used to extract active products. However, abundant Acanthopanax senticosus residues (ASR), which contain plenty of lignin are discarded after extraction. An appropriate extraction method should be chosen to obtain the lignin with such desirable properties. Thus, this study investigated the effect of alkali, milled wood, deep eutectic solvent and ethanol methods on the lignin. Lignin obtained from different extraction methods were characterized, yields, chemical structure, thermal behavior, molecular weight and phenolic content were evaluated. The results show that the process of lignin acquisition has a great influence on the properties of lignin. Moreover, the multifarious functional groups exist in lignin macromolecules, such as phenolic, ether groups and other chromophores, conferred good UV resistance to lignin. Among them, the lignin from alkali method has the most phenolic-OH groups and smallest molecular weight result in a good UV-resistant, the SPF value achieves 2.39 at 1% AL content, the alkali method was the best way to make sunscreen blended with cream take various factors into consideration. This study used lignin as a bioactive ingredient to provide UV-resistant property to sunscreen formulations. Furthermore, lignin extracted from Acanthopanax senticosus residue provides a new application for the treatment of herb residue waste.
刺五加被用来提取活性产物。然而，在提取后，大量含有丰富木质素的刺五加残余物（ASR）被丢弃。为了获得具有理想性质的木质素，应该选择适当的提取方法。因此，本研究考察了碱法、磨木法、深共晶溶剂法和乙醇法对木质素的影响。对不同提取方法得到的木质素进行了表征，评估了产率、化学结构、热行为、分子量和酚含量。结果表明，木质素的获取过程对木质素的性质有很大影响。此外，木质素大分子中存在多种官能团，如酚、醚等发色团，赋予木质素良好的抗紫外线性能。其中，碱法木质素的酚-OH 基团最多，分子量最小，抗紫外线性能良好，在 1%AL 含量时 SPF 值达到 2.39，考虑到各种因素，碱法是制备防晒霜与乳膏混合的最佳方法。本研究将木质素用作生物活性成分，为防晒霜配方提供抗紫外线性能。此外，从刺五加残余物中提取的木质素为处理草药残余废物提供了新的应用。
