花椒麻度感官评价自校准线性标度的建立

A Study on the Establishment of Labeled Line Scale for Quantitative Sensory Evaluation of Pungent Intensity of Zanthoxyluml bungeanum

麻感标度的建立是对麻味感觉强度进行量化评价的基础。本文在对评价员麻感语义描述差异性分析的基础上,采用自校准的方法,即在不改变评价员使用标度习惯和范围的前提下,通过统计分析统一评价小组的标度范围,最终建立了花椒麻度感官评价的15-cm标记线性标度。麻感标记值分别为:0.8(微麻),3.1(有点麻),6.4(麻),8.1(较麻),10.3(很麻)和12.5(特麻)。该标度本质上为等比标度,符合y=2.7321ln(x)+4.941。评价员使用该标度的重复性和一致性满足要求。重复性考察指标相对标准偏差值小于20%,一致性考察指标|En|值小于1。建立的麻感标记线性标度对于花椒麻感强度(麻度)的量化评价及开展相关研究具有重要的理论和实践意义。

It was fundamental to establish a scale for quantitative sensory evaluation of pungency intensity. Based on the difference analysis of scalingresults for those pungency descriptors, an individual-calibrated scaling method was adopted（the scaling scope was not confirmed by changing personal scaling habits or scope but unifying the scope of use by statistical analysis method） to establish a 15-cm labeled linescalethat applied to quantitative pungencysensory evaluation. The labeled value in the 15-cm line scale were 0.8（slight pungency）, 3.1（minor pungency）, 6.4（moderate pungency）, 8.1（medium above pungency）, 10.3（strong pungency） and 12.5（extreme pungency）. Essentially, the liner scale was proved to be a ratio scale conformed with psychophysics laws（y =2.7321ln（x） ＋4.941）. The repeatability indicator（RSD） was less than 20% and the consistency indicator（｜En｜） was less than 1. As an initial establishment of 15-cm labeled line scale, it was of great theoretical and practical significance for the study of quantitative sensory evaluation of pungency intensity（pungency degree） and related research.