【摘要】 为运用概率分级和回归分析方法揭示普通丝瓜褐变度与总酚含量之间的相互关系,从而建立普通丝瓜基于褐变度正态分布的分级标准,研究测定38份普通丝瓜的褐变度和总酚含量。采用X-1.2818S、X-0.5246S、X+0.5246S和X+1.2818S 4个点将丝瓜褐变度概率分为5级,即极低(1级)、低(2级)、中(3级)、高(4级)、极高(5级),并将其与总酚含量进行线性回归分析。普通丝瓜果肉褐变度变化范围为2.17~9.60,平均值为6.211,变异系数为29.77%,经K-S正态性检验符合正态分布,建立褐变度和总酚含量的线性回归方程y=3.559x-2.837,两者之间存在显著的线性关系。普通丝瓜果肉褐变度与总酚含量呈显著正相关。更多还原

【Abstract】 The research aims to use the method of probability classification and regression analysis to revealthe relationship between luffa browning degree and its total phenol content, and establish a standard luffa gradebased on normal distribution of the browning degree. The browning degree and total phenol were determinedamong 38 luffa varieties. Furthermore, luffa browning probability was divided into five grades [i.e., extremelylow(1), low(2), medium(3), high(4), extremely high(5)] according to four points(i.e., X-1.2818 S, X-0.5246 S,X +0.5246 S and X +1.2818S), and its linear-regression with total phenol was analyzed. The K-S normalitytesting results showed that the browning degree which ranged from 2.17 to 9.60 conformed to normaldistribution, and had an average value of 6.211 and a variable coefficient of 29.77%. There was a significantlinear relationship between luffa browning degree and total phenol, and a linear regression equation wasestablished(i.e., y=3.559x-2.837). The results showed that there was a significantly positive correlationbetween luffa total phenol and its browning degree.更多还原