摘要
为了筛选促进烟叶生长的植物生长物质,研究了烤烟喷施植物生长物质(主要成分为赤霉素)对烘烤过程(正常和高温高湿条件下)中烟叶含水量、多酚氧化酶活性、多酚含量等指标的影响。结果表明,正常和非正常(高温高湿)2种烘烤条件下,植物生长物质处理烟叶的含水量差异较大,正常烘烤条件下,烘烤0～36h烟叶含水量下降速度缓慢,而在后期下降速度较快;而非正常烘烤条件下,烘烤0～60h烟叶含水量下降均较慢,至烘烤60h,仍在鲜烟叶的50%左右。在正常烘烤条件下,多酚氧化酶活性随烘烤时间的延长持续下降,到烘烤60h时,活性达到最低;而在非正常烘烤条件下,多酚氧化酶活性呈先降低后升高再降低趋势,但在烘烤最后酶活性仍明显高于正常烘烤条件下的酶活性。2种烘烤条件下,各处理多酚含量总体上均有升高趋势,且在烘烤前期,除少数处理外,喷施植物生长物质处理能提高烟叶多酚含量,但到烘烤后期大部分处理间差异不明显。2种烘烤条件下,喷施植物生长物质各处理上等烟比例均显著高于CK,且正常烘烤条件下的上等烟比例均高于非正常烘烤条件,可见,施用植物生长物质均提高了上等烟比例,以植物生长物质4号和7号的配方效果较好。
To select appropriate plant growth regulator matters （PGRM） of tobacco and optimize roasting techniques,this paper studied the effect of PGRM on dynamic changes of water content,PPO activity and polyphenol content of tobacco during roasting process through plant growth regulator sprays and roasting technology controls. The results showed that, there were significantly different water contents of tobacco leaves among the different PGRM treatments. During 0-36 h,the water content of tobacco was decreased very slowly, and during anaphase, it decreased obviously under the normal roasting technology. The PPO activity was decreased with roasting time,reaching the lowest point at 60 h under the normal roasting technology. But under the abnormal roasting technology, the PPO activity was decreased at first, and then increased, with the lowest point significantly higher than that under the normal roasting technology. There was no significant difference of polyphenol contents among most treatments, which had an increasing trend compared with control. During roasting prophase, the polyphenol content of PGRM treatment rose,but when entering＇the roasting anaphase,it was close to the contents in the other treatments. The ratio of high grade flue-cured tobacco in PGRM treatments was significantly higher than that of CK under two roasting conditions. And there was also a higher ratio of high grade flue-cured tobacco under normal roasting technology in comparison with that under abnormal roasting technology. It suggested that applying PGRM could increase the high grade flue-cured tobacco in particular the treatment T4 and T7.
出处
《河南农业科学》
CSCD
北大核心
2013年第3期36-41,共6页
Journal of Henan Agricultural Sciences
基金
河南省烟草公司重点项目(HYKJ2010M01)
关键词
植物生长物质
烘烤工艺
烤烟
多酚
多酚氧化酶
plant growth regulator matter （PGRM）
roasting technology
flue-cured tobacco
polyphenol
polyphenol oxidase
