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运用改进的吸收法、分光光度法和其它几种分析方法相结合对莲藕 (Nelumbonuciferagaertn )采收后的呼吸强度、引起褐变的酶活性、褐变度以及糖和蛋白质含量等多种生理生化指标进行了快速准确的测定 .实验发现 ,莲藕采收后 1 1d,总糖含量由 1 2 8.1 3mg/g降至 7.6mg/g,酶活力和还原糖含量分别由 2 .2 1U/g和 4 .79mg/g升至 3.74U/g和 1 9.4 8mg/g,呼吸强度在第 3d出现高峰 ,同时其它指标均有相应的明显变化 .对所得数据进行相关性分析 ,发现各指标间均有相关 ,大部分的相关系数高于 0 .9.建议采收后的 3d内必须对莲藕进行一定的保鲜处理 .上述研究可为莲藕贮藏保鲜提供一定的理论依据 .
The physiological and biochemical indexes such as respiration intensity, browning activity, browning degree, sugar and protein content, etc. Were extracted by the combination of improved absorption method, spectrophotometry and several other analytical methods. The results showed that the total sugar content decreased from 12 2 3 3 mg / g to 7.6 mg / g on the 11th day after the lotus root was harvested, and the enzyme activity and the content of reducing sugar were increased from 2.21 U / g and 4, respectively .79mg / g increased to 3.74U / g and 1 9.48mg / g, respiration intensity peaked on the third day, while other indicators were significantly changed corresponding to the data obtained correlation analysis and found that all the indicators were related , Most of the correlation coefficient is higher than 0. 9 It is suggested that the lotus root must be kept fresh during the 3d after harvesting.The above research can provide some theoretical basis for the lotus root preservation and preservation.