不同打叶风分单元分离烤烟片烟的色度变化及分类初探  

A Preliminary Study on the Color Variation and Classification of Tobacco Strips Separated from Different Threshing and Pneumatic Separation Units

作　　者：王玉真[1] 高占勇[1] 王慧[1] 汪显国[1] 李思源 马晓龙[1] 杨晶津[1] 高辉 WANG Yuzhen;GAO Zhanyong;WANG Hui;WANG Xianguo;LI Siyuan;MA Xiaolong;YANG Jingjin;GAO Hui(Hongyun-Honghe Tobacco(Group)Co.,Ltd.,Kunming 650231,China;Yunnan Tongchuang Detecting Technique Co.,Ltd.,Kunming 650106,China)

机构地区：[1]红云红河烟草(集团)有限责任公司,云南昆明650231 [2]云南同创检测技术股份有限公司,云南昆明650106

出　　处：《云南农业大学学报（自然科学版）》2021年第4期654-659,共6页Journal of Yunnan Agricultural University:Natural Science

基　　金：中国烟草总公司重大专项项目(110201901030,FK-01);云南中烟工业有限责任公司重大专项项目(2017GY04)。

摘　　要：【目的】研究烤烟打叶工序不同风分口分离片烟的色度值差异及分类,为打叶后不同品质片烟的差异化复烤及醇化提供参考,以期进一步提升烟叶原料的模块化、均质化和纯净化水平。【方法】选择2019年云南昆明云烟87 C3F初烤烟叶为研究对象,在打叶工序生产稳定的条件下,对各风分口(四级打叶单元共11个风分口)分离的片烟进行多次取样,制成粉末后利用色差计测定其CIE‒L^(*)a^(*)b^(*)色空间值(明度值L^(*)、红度值a^(*)、黄度值b^(*)和总色差值ΔE)。利用单因素方差分析研究不同风分口片烟色度值的差异,并基于标准化的色度值矩阵,利用Fisher最优分割法对11个打叶风分口分离的片烟进行分类。【结果】(1)同一等级初烤烟叶在打叶过程中,从不同风分口分离片烟的色度值总体存在显著差异和规律性变化趋势。(2)在第1级和第2级打叶单元,随着风分口级数的增加,片烟的L^(*)值逐渐降低,a^(*)、b^(*)及ΔE值逐渐升高;在第3级和第4级打叶单元,随着风分口级数的增加,L^(*)值总体呈升高的趋势,a^(*)、b^(*)及ΔE值总体呈降低的趋势。(3)基于片烟色度值的变化,利用Fisher最优分割法将11个打叶风分口按顺序划分为4段,段间的片烟色度值总体存在显著差异。【结论】不同打叶风分口的片烟品质存在较大差异。通过工艺改造,将各段片烟分别存贮并进行差异化复烤和调配利用,对调控烟叶品质、控制卷烟质量具有重要意义。[Purpose]The differences and classification of color values of tobacco strips separated from different pneumatic separation outlets in threshing process were investigated in order to provide reference for differentiated redrying and aging of different quality tobacco strips after threshing and further improve the modularization,homogenization and purification level of tobacco raw materials.[Method]The flue-cured tobacco of Yunyan87 C3F in Kunming,Yunnan Province in 2019 was taken as the research materials.Under the condition of stable production in threshing process,tobacco strips separated from different threshing and pneumatic separation outlets were sampled many times and their CIE-L^(*)a^(*)b^(*)color space values(lightness value L^(*),redness value a^(*),yellowness value b^(*)and total color difference valueΔE)were determined by colorimeter.The differences of color values of to-bacco strips separated from different pneumatic separation outlets were analyzed by one way AN-OVA.Fisher optimal segmentation method was used to divide the eleven pneumatic separation out-lets based on the standardized color values matrix.[Results](1)For the same grade of flue-cured tobacco in the threshing process,there were significant differences and regular trends in color values of the tobacco strips separated from different pneumatic separation outlets.(2)With the increase of pneumatic separation stage in the first and second stage threshing units,the L^(*)value gradually de-creased,while the values of a^(*),b^(*)andΔE gradually increased.With the increase of pneumatic separa-tion stage in the third and fourth stage threshing units,the L^(*)was generally increasing,while the val-ues of a^(*),b^(*)andΔE were decreasing.(3)Based on the variations of color values of tobacco strips,the eleven pneumatic separation outlets were divided into four segments in sequence using Fisher optimal segmentation method,and there were significant differences in the overall color values of tobacco strips among the segments.[Conclusion]There was

关 键 词：打叶风分 片烟 色度值 差异性 Fisher最优分割法 

分 类 号：TS[轻工技术与工程]