竹笋壳多糖的顺序提取、结构表征及抗氧化活性
Sequential extraction, structural characterization, and antioxidant activity of polysaccharides from bamboo shoot shell.
作者信息
Peng Xiaowei, Liu Jingjie, Tang Ni, Deng Jia, Liu Can, Kan Huan, Zhao Ping, Zhang Xia, Shi Zhengjun, Liu Yun
机构信息
Key Laboratory of State Forestry and Grassland Administration on Highly-Efficient Utilization of Forestry Biomass Resources in Southwest China, Southwest Forestry University, Kunming 650224, China.
Key Laboratory of Forest Resources Conservation and Utilization in the Southwest Mountains of China Ministry of Education, Southwest Forestry University, Kunming 650224, China.
出版信息
Food Chem X. 2023 Mar 5;17:100621. doi: 10.1016/j.fochx.2023.100621. eCollection 2023 Mar 30.
Polysaccharides including water-soluble fraction (W), 1,2-Cyclohexanediaminetetraacetic acid (CDTA)-soluble fraction (CA), sodium carbonate (NaCO)-soluble fraction (SC), 1 M potassium hydroxide (KOH)-soluble fractions (PH1), and 4 M KOH-soluble fraction (PH4) were successively extracted from bamboo shoot shells using water, CDTA, NaCO, and KOH solution. The analytical methods were employed to initially identify the structural characteristics of the five polysaccharide fractions, and their antioxidant capacities were determined. According to the data, the average molecular weight of the five polysaccharide fractions was between 4 816 and 993 935 Da. In all four types (CA, SC, PH1, and PH4), xylose was the most abundant monosaccharide, especially in PH1 and PH4. Both PH1 and PH4 were found to contain 1,4--d-Xyl as their main chain, as determined by nuclear magnetic resonance (NMR) spectroscopy. Additional research into CA and SC's antioxidant potential is required since they both showed potent antioxidant activities.
从竹笋壳中依次用水、1,2-环己二胺四乙酸（CDTA）、碳酸钠（Na₂CO₃）和氢氧化钾（KOH）溶液提取多糖，包括水溶性部分（W）、CDTA可溶性部分（CA）、碳酸钠可溶性部分（SC）、1 M氢氧化钾可溶性部分（PH1）和4 M氢氧化钾可溶性部分（PH4）。采用分析方法初步鉴定这五种多糖组分的结构特征，并测定其抗氧化能力。根据数据，这五种多糖组分的平均分子量在4816至993935 Da之间。在所有四种类型（CA、SC、PH1和PH4）中，木糖是含量最丰富的单糖，尤其是在PH1和PH4中。通过核磁共振（NMR）光谱测定，发现PH1和PH4均以1,4-β-D-木糖为主链。由于CA和SC均表现出较强的抗氧化活性，因此需要对它们的抗氧化潜力进行进一步研究。
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