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时间:2020-03-25
《密集烘烤关键温度点稳温时间对烤后烟叶质量的影响.pdf》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、广西农业科学2010,41(12):1329—1331GuangxiAgriculturalSciences·1329·密集烘烤关键温度点稳温时问对烤后烟叶质量的影响汪伯军,张文平(重庆市烟草公司武隆分公司,重庆武隆408500)摘要:针对近年来密集烤房应用中存在的干物质降解不充分和香气物质不足的问题,2009年以云烟87为试材,在重庆市武隆县进行了密集烤房关键温度点不同稳温时间对烤后烟叶化学成分、外观质量、能耗、经济性状和评吸质量的影响研究。结果表明,在干球温度42℃和54。C分别稳温12h,烤后烟叶的综合质量较好,能耗较低,投入与产出比较高。在4
2、2。c稳温时间过短,烟叶变黄和凋萎不充分,烤青烟比例增加;稳温时间过长,导致干物质降解过度,烟叶在定色期失活早,酶促棕色化反应加重,影响烤后烟叶外观质量。烟叶在54。C保持相对长的时间可改善烟叶的颜色和色度,有利于香气物质的形成。关键词:烤烟;稳温时间;烤后质量中图分类号:$572.09文献标识码:A文章编号:1002—8161(2010)12—1329-03Effectsofdifferentstabletimeofkeytemperaturesonqualityofflue-curedtobaccoleafinbulk-curingWANGBo-
3、jun,ZHANGWen-ping(WulongBranchofChongqingTobaccoCompany,Wulong,Chongqing408500,China)Abstract:’nlepresentexperimentwasconductedtosolvetheinsufficientdegradationofdrymatterandinadequate刮l'onlamatterinflue—curedtobaccolearinapplicationofbulk-curingbarn.Yunyan87wagusedasthemateria
4、linexperi.ment,andtheeffectsofdifferentstabletimeofkeytemperaturesinbulk-curingbarnonchemicalconstituents,appearancequality,energyconsumption,economiccharactersandsmokingqualityofflue-curedtobaccoleMwereevaluatedinWulongcountyofZhongqingcityin2009.Theresultsindicatedthatflue-cu
5、redtobaccoleafhadbettercomprehensivequality,thebarnusedlowerenergyconsumption,andthetobaccoproductionhadhigherratioofinputtooutputwhenstabletimekeptfor12hat42℃and54。Cofdry-bulbtemperature,respectively.11leleavesyeBowingandwiltingwerenotenough,andtheproportionofgreentobaccoleafi
6、ncreasedwhenstabletimeof42℃ofdry-bulbtemperaturekeptshorter,whiletheexces—sivedegradationofdrymatter,earlierdeactivationofleafatcolor-fixationstage,moreseriousenzymaticbrowningreactionwouldoccurredwhenstabletimeof42。Cwa$overlongtoaffecttheappearancequalityofflue-curedleaf.Whent
7、heleafwaskeptlongertimeat54。Ccouldimprovethecolorandchromaoftobaccoleaf,whichwouldbebeneficialtotheforma-tionofaromamatter.Keywords:flue-curedtobacco;temperaturestabletime;qualityofcuredleaf三段式烘烤工艺将烟叶烘烤分为变黄阶段、定色阶段和干筋阶段,每个阶段的干球温度分为升温速度和稳温时间两个步骤[1]。稳温时间的长短直接影响到干物质的降解和香气物质的形成。部分烤房
8、在自动控温控湿状态下满足不了升温排湿需要而延长烘烤时间,从而影响烟叶质量[2,3J。针对近年来密集烤房应用中
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