基于菌丝分布面积占比的仓储烟叶霉变分级研究

打开文本图片集

中图分类号：S435.72 文献标识码：A文章编号：1007-5119（2025）04-0051-09

Abstract： Curent gradingofmoldcontaminationmainlyreliesonsensory evaluation intobacco industy， whichlead toefcient assessment and managementof moldytobacco with significant discrepancies.Todevelopanobjective andeffective grading system for moldcontamination，this studyselecteda mixedfungal strainof Aspergilusniger and Penicilium citrinumas experimental inoculum，basdothpdoantivablecorgansmsinoldoamatedtobaccolves.Underotrolldature and humidityconditions，tobacc strips were inoculated withthe mixedspore suspension，and theprogressionof mold growth was monitored by measuring the mycelial distribution area，mold colony count， and CO2 concentration.The results revealed a power-law corelationbetweentheproportionofmyelialdistributionareaandmoldcountpergram，whichcouldserveasaeliablequantitative indicator of mold severity and progression. Furthermore，the inflection point in CO2 concentration during early-stage mold growth corresponded toaspecifictreshold inmycelialdistributionarea，markingtheonsetofthelogarithmic growth phase.UsingK-means clusteringanalysis，thdegeeofoldcontamationbeyondthisinfletionpointascasifedintofvedistitseveritlelsbased ontheproportionof mycelial distributionarea.As validatedagainstmoldcolonycounts，this grading methodexhibitedanaverage misgrading rate of only 1.16% . The grading system can increase the evaluation accurancy for mold contamination in tobacco， and propose a more precise and efficient tool for quality control in tobacco storage and management.

Keywords： proportion of mycelial distribution area; tobacco mold; mold grading; clustering analysis

烟草是我国重要的经济作物之一[1]，而烟叶品质直接影响卷烟产品质量。（剩余15492字）