来自Bacillus Rugosus L1C7T的外聚糖的优化和部分表征
Gunasekaran Yazhini1, Subramanium Thiyageshwari2,2, Ariyan Manikandan3,4
1Department of Soil Science and Agricultural Chemistry, Tamil Nadu Agricultural University, Coimbatore, Tamil Nadu, India.
Current microbiology
|November 12, 2025
概括
这项研究利用响应表面方法优化了Bacillus rugosus L1C7T的外聚糖化物 (EPS) 生产. 标志性的EPS显示出食品,制药,农业和生物修复应用的潜力.
科学领域:
- 微生物学和生物技术
- 生物聚合物科学 生物聚合物科学
背景情况:
- 外聚糖 (EPS) 是微生物聚合物,具有多种应用,但其产量高度依赖于培养条件.
- 粗杆菌L1C7T被确定为一个有前途的EPS生产者.
研究的目的:
- 优化培养基,以从Bacillus rugosus L1C7T.提升EPS的产量.
- 描述产生的EPS,并探索其潜在的应用.
主要方法:
- 使用响应表面方法 (RSM) 来优化NaCl度,K2HPO4度和C/N比率.
- 福利埃变换红外 (FT-IR) 光谱,1H核磁共振 (NMR) 光谱,热重力测量分析 (TGA) 和差分扫描热量测量 (DSC) 用于EPS的表征.
主要成果:
- 最佳EPS产量 (1.35g/L) 是通过11.25g/L NaCl,6.25g/L K2HPO4和0.5.5的C/N比率实现的.
- FT-IR和1H NMR分析证实了各种功能组和糖分的存在 (皮拉诺斯,6-脱氧,乙烯酸糖).
- 该EPS表现出显著的激素清除活性,高水溶性,125%的水吸收率和65%的油吸收能力,玻璃过渡温度为43.7°C.
结论:
- 来自Bacillus rugosus L1C7T的优化EPS具有理想的物理化学特性和功能组.
- 这种EPS在食品,制药,农业和生物修复行业具有很大的应用潜力.
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