【摘要】 目的采用响应面法优化美洲大蠊药渣中多糖提取工艺,并考察其促创面愈合的作用,为美洲大蠊药渣综合利用提供思路。方法在单因素实验基础上,采用Box-Behnken设计最佳美洲大蠊多糖提取工艺,并分析其单糖组成。采用0.1、0.05、0.025 g/mL美洲大蠊多糖作用于创面损伤模型小鼠,计算创面愈合率,用苏木精-伊红和天狼猩红染色评价创面愈合程度。结果美洲大蠊多糖的最佳提取工艺为碱液浓度0.02mol/L,提取时间1.65h,提取温度62℃,该条件所得多糖转移率为13.68%,且由甘露糖、鼠李糖、葡萄糖醛酸、半乳糖醛酸、葡萄糖、半乳糖、岩藻糖7种单糖组成。创面愈合实验表明,第3、6、9、14天多糖给药组创面愈合率均高于模型组,且组织切片染色表明该多糖组分能促进胶原和肉芽组织生成,从而促进创面愈合。结论响应面法优化的提取工艺切实可靠,提取率高;美洲大蠊药渣提取多糖能促进小鼠创面愈合,提示美洲大蠊药渣中多糖具有开发为创面用相关产品的应用前景。更多还原

【Abstract】 Objective To optimize the extraction of polysaccharide from the residue of Periplaneta americana by response surface method and study the effect of P. americana polysaccharide(PAP) on wound healing, so as to provide ideas for the comprehensive utilization of P. americana residues. Methods On the basis of single factor experiment, Box-Behnken response surface method was used to design the best extraction process. And the monosaccharide composition of polysaccharide was analyzed. Polysaccharide concentrations of 0.1, 0.05, and 0.025 g/mL were applied to the wound injury model mice. The wound healing rate was calculated, and hematoxylin-eosin(HE) and Sirius Red staining were used to evaluate the wound healing degree. Results The optimum extraction technology of PAP were as follows: The concentration of NaOH was 0.02 mol/L; And the extraction time was 1.65 h; The extraction temperature was 62 ℃. The transfer rate of polysaccharide extracted by this process was 13.68%. The polysaccharide of the P.americana consisted of seven monosaccharides of mannose, rhamnose, glucuronic acid, galacturonic acid, glucose, galactose, and fucose. Wound healing experiment showed that wound healing rate of the polysaccharide group on day 3, 6, 9, and 14 was higher than that of the model group, and HE and Sirius Red staining showed that the polysaccharide could promote the formation of collagen and granulation tissue, thus promoting the wound healing. Conclusion The optimized extraction process of PAP from P. americana residues by response surface method was reliable, with high extraction rate. And PAP could promote wound healing in mice, suggesting that the polysaccharide from P. americana residues could be used as wound related products.更多还原