摘要
采用河南农业大学设计的电热式温湿自控烤烟箱对烟叶进行了高温、低温、低温拉长变黄等3种不同的烘烤处理,对各烘烤条件下烟叶中H2O2、O2.-、丙二醛(MDA)及谷胱甘肽还原酶(GR)、谷胱甘肽(GSH)动态的测定结果表明,随着烘烤中烟叶水分不断散失,O2.-、H2O2、MDA和谷胱甘肽的含量,在0～24 h期间均呈现缓慢上升,24～48 h急剧上升的趋势,其中O2.-、H2O2、MDA含量变化在48 h后趋于平缓;谷胱甘肽还原酶活性变化趋势相反。就不同烘烤条件而言,低温条件下活性氧和GR的变化幅度最大,低温并拉长变黄时间次之,高温下最小。
The changes of O2.-、H2O2 contents and GR activity have been studied in tobacco leaves under different curing conditions. The results showed the same trends of the contents of H2O2、O2.-、 MDA and GSH under different curing conditions. All increased slowly in 0-12 hours and quickly in 24 -48 hours, and the turning points appear on 48 hours in curing proceeding, but the changes of GR activity is on the contrary. Comparatively, the ranges of changes of them are the biggest in treatment of low temperature and that of treatment of high temperature is the smallest.
出处
《华中农业大学学报》
CAS
CSCD
北大核心
2003年第5期508-511,共4页
Journal of Huazhong Agricultural University
基金
国家烟草专卖局项目(981022)资助
