【摘要】 目的建立快速测定豆腐柴叶果胶提取液中的果胶含量的方法。方法采用咔唑硫酸分光光度法直接测定果胶提取液中的果胶含量,测定结果再用校正因子校正。结果校正因子为0.8551,本方法相对标准偏差小于3.5%,精密度、灵敏度较高。结论此法可快速测定豆腐柴叶提取液中的果胶含量,缩短了分析时间,有利于生产过程的控制。更多还原

【Abstract】 Objective To establish a method for quick determination of pectin in pectin extract from Premna microphylla.Methods The pectin content in pectin extract was determined directly by carbazole and sulphuric acid spectrophotometric method,and the measurement was corrected by correction factor.Results The correction factor was 0.8551 and relative standard deviation(RSD) was less than 3.5%.This method had high precision and sensitivity.Conclusion This method can be used for quick determination of pectin in pectin extract from Premna microphylla and benefit to the control of production process.更多还原