| 白肋烟晾制过程中硝酸还原酶活动的变化 |
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| 引用本文： | 杨焕文,崔明午.白肋烟晾制过程中硝酸还原酶活动的变化[J].云南农业大学学报,1997,12(3):183-187. |
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| 作者姓名： | 杨焕文 崔明午 |
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| 作者单位： | [1]云南农业大学农业科学技术学院 [2]美国肯塔基大学农学系 |
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| 摘 要： | 烟叶采收晾制后,体内硝酸还原酶活动剧烈下降,晾制后4d,叶肉内该酶活性即下降至0,晾制后两周主脉内此酶活性下降至0.且两种电子供体间无显着差异.烟叶体外硝酸还原酶活动晾制开始时很低,晾制3周后增加.整个晾制过程中叶肉、主脉硝酸盐含量均无显着变化.晾制后两周主脉亚硝酸盐含量很低,但是晾制后3周开始逐渐增加,叶肉亚硝酸盐在整个晾制过程中无变化.晾制后3周,主脉亚硝酸盐含量增加,与体外硝酸还原酶活动相关,这可能是微生物的酶起作用.
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| 关 键 词： | 硝酸还原酶活性 晾制 硝酸盐 亚硝酸盐 微生物 |
| 收稿时间： | 1996-11-11 |
Nitrate Reductase Activity During Curing of Air-cured Burley Tabacco |
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| Yang Huanwen,Zhou Ping,Cui Mingwu,Lowell P Bush,Haroid R Burton.Nitrate Reductase Activity During Curing of Air-cured Burley Tabacco[J].Journal of Yunnan Agricultural University,1997,12(3):183-187. |
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| Authors: | Yang Huanwen Zhou Ping Cui Mingwu Lowell P Bush Haroid R Burton |
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| Institution: | Yang Huanwen 1 Zhou Ping 1 Cui Mingwu 2 Lowell P Bush 2 Haroid R Burton 2 |
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| Abstract: | In vivo nitrate reductas activity(NRA) decreased rapidly after harvesting After 4 days of air curing, NRA was near zero and no signifcant difference was observed between different electron donors In vitro NRA was initially low,but increased after 3 weeks Nitrate change was not significant in both lamina and midrib through air curing Midrib nitrite was low during the first 2 weeks of curing, but increased after 3 weeks of curing NRA and nitrite increase in midrib of after 3 weeks was positively correlated and this suggests that not the plant, but the microbial NRA may responsible for nitrite increase during air-curing tabacco |
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| Keywords: | Nitrate reductase activity(NRA) Air-curing Nitrate Nitrite Microbial |
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