微真空条件下基于色泽参数变化的西兰花叶绿素质量分数预测模型

Prediction Model for Chlorophyll Content in Post-Harvest Broccoli Based on Color Parameter Changes in Micro-Vacuum Conditions

DOI：10.3969/j.issn.1673-1689.2014.02.015

中文关键词: 西兰花 叶绿素 色泽参数 预测模型

英文关键词: broccoli chlorophyll content color parameter prediction model

基金项目:山东省自然科学基金联合专项项目(ZR2011CL009)

摘要点击次数: 186

全文下载次数: 852

中文摘要:

为研究微真空条件下西兰花叶绿素质量分数与其表面色泽变化的关系,建立基于色泽参数(-a/b值)变化的西兰花叶绿素质量分数预测模型,将采后西兰花分别贮藏于压力为53.33~66.66、66.66~79.99、79.99~93.32 kPa,温度为(3±0.5)℃的微真空及常压条件下,通过定期随机取样测定西兰花色泽参数-a/b值及叶绿素质量分数变化与回归分析,建立叶绿素降解的预测模型。试验数据分析结果表明,53.33~66.66、66.66~79.99、79.99~93.32 kPa及常压条件下叶绿素质量分数、-a/b值与贮藏时间之间的动力学模型分别为C chl1=-0.008 5t+0.945 4,C chl2=-0.070 6t+0.756 4,C chl3=-0.071 4t+0.726 4,C chl4=-0.081 2t+0.782 9和-a1/b1=-0.014 3t+1.370 8,-a2/b2=-0.010 68t+1.456 8,-a3/b3=-0.127 1t+1.452 1,-a4/b4=-0.146t+1.519 3,均符合零级动力学模型。根据叶绿素质量分数与色泽参数(-a/b值)之间的线性关系,建立微真空条件下基于色泽参数变化的叶绿素质量分数的预测模型,分别为:C chl1=0.598 5(-a/b)-0.108 7(R2=0.997 6),C chl2=0.608 7(-a/b)-0.149 3(R2=0.981 7),C chl3=0.559 3(-a/b)-0.083 7(R2=0.997 7),C chl4=0.531 9(-a/b)-0.035 1(R2=0.986 9);经模型验证表明,应用色泽参数变化预测西兰花叶绿素质量分数是可行的。该研究结果为西兰花的无损检测提供了良好的理论支持。

英文摘要:

In order to explore the relationship between chlorophyll content and color changes of post-harvest broccoli in micro-vacuum conditions,a prediction model for chlorophyll content was established based on color parameter changes,freshly broccoli was stored in micro-vacuum conditions of pressure of 53.33 ~66.66、66.66 ~79.99、79.99 ~93.32 kPa and atmospheric pressure, temperature of(3±0.5) ℃,a predictive model of chlorophyll degradation was established through measuring the color parameter-a/b value,chlorophyll content changes and regression analysis. The results showed that:under 53.33~66.66、66.66~79.99、79.99~93.32 kPa and atmospheric pressure, kinetic models of-a/b value and chlorophyll content with respect to storage time were established according to the test data:C chl 1 =-0.008 5t+0.945 4,C chl 2 =-0.070 6t+0.756 4,C chl 3 =-0.071 4t+0.726 4, C chl 4 =-0.081 2t0.782 9 和-a1 /b1 =-0.014 3t+1.370 8,-a2 /b2 =-0.010 68t+1.456 8,-a3 /b3 =-0.127 1t+ 1.452 1,-a4 /b4 =-0.146t +1.519 3,they all met zero order kinetic model. In addition, prediction models for chlorophyll content based on-a/b value were further developed according to the linear relationship between chlorophyll content and-a/b value:C chl 1 =0.598 5(-a/b)-0.108 7(R2=0.997 6), C chl 2 =0.608 7(-a/b)-0.149 3(R2=0.9817),C chl 3 =0.559 3(-a/b)-0.083 7(R2=0.997 7),C chl 4 =0.5319(-a/b)-0.035 1(R2=0.986 9);they were feasible to use the color parameters changes to predict the chlorophyll content of broccoli after verification. Results of the study provided good support for the non-destructive testing of broccoli.

查看全文 查看/发表评论 下载PDF阅读器