Beijing Key Laboratory of Lignocellulosic Chemistry, Beijing Forestry University, Beijing 100083, PR China.
Beijing Key Laboratory of Lignocellulosic Chemistry, Beijing Forestry University, Beijing 100083, PR China.
Bioresour Technol. 2023 Nov;387:129679. doi: 10.1016/j.biortech.2023.129679. Epub 2023 Aug 12.
In this study, light-colored lignin was extracted from bamboo shoot shells (BSS) using a hydrated deep eutectic solvent (DES) pretreatment. The hydrated DES used in pretreatment consist of formic acid, benzyl triethylammonium chloride (BTEAC) and water. The pretreatment using a hydrated DES containing 30% water (H30) demonstrate efficient delignification (82.9%). Additionally, the hydrated DES protected the β-O-4 linkage from excessive cleavage and recondensation as well as keep the light-colored of lignin. Moreover, the hydrated DES extracted lignin exhibits superior antioxidant performance and tyrosinase inhibitory capacity compared to the control. Notably, incorporating 5% lignin of H30-extracted lignin into a commercial suncream led to a remarkable enhancement of the SPF value, elevating from 14.8 to 32.6. In summary, the proposed hydrated DES pretreatment method offers significant benefits for extracting light-colored lignin, thereby promoting the multifunctional application of lignin in cosmetics.
在这项研究中，使用水合深共晶溶剂（DES）预处理从竹笋壳中提取浅色木质素。预处理中使用的水合 DES 由甲酸、苄基三乙基氯化铵（BTEAC）和水组成。使用含有 30%水的水合 DES（H30）进行预处理可实现高效脱木质素（82.9%）。此外，水合 DES 防止了 β-O-4 键的过度断裂和重缩合，并保持了木质素的浅色。此外，与对照相比，水合 DES 提取的木质素具有优异的抗氧化性能和酪氨酸酶抑制能力。值得注意的是，将 5%的 H30 提取木质素加入商业防晒霜中，可使 SPF 值显著提高，从 14.8 提高到 32.6。总之，所提出的水合 DES 预处理方法在提取浅色木质素方面具有显著优势，从而促进了木质素在化妆品中的多功能应用。
