不同调制方法对晒黄烟叶绿素降解和脂氧合酶活性的影响  

Effect of different curing methods on chlorophyll degradation and lipoxidase activity in yellow sun-cured tobacco

作　　者：刘国庆[1] 魏建荣[1] 招启柏[1] 胡钟胜[1] 张天兵[1] 杨奋宇 符云鹏[2] 

机构地区：[1]江苏中烟工业有限责任公司,南京210019 [2]河南农业大学,郑州450002

出　　处：《中国烟草学报》2015年第2期75-78,共4页Acta Tabacaria Sinica

摘　　要：为提高晒黄烟外观质量,以湖南宁乡晒黄烟全晒方法为对照,在全晒过程中分别引入捂晒、烤晒的方法,研究了调制过程中叶绿素a、叶绿素b和脂氧合酶(LOX)活性的变化。结果表明:烤晒可以提高LOX的活性峰值,捂晒可以有效延长LOX作用时间。叶绿素a含量、叶绿素b含量与LOX活性均呈显著负相关关系。三种调制方式叶绿素降解发生的阶段不同,但调制结束时降解率均达到90%以上,相对而言,T1捂晒效果最好,调制结束叶绿素总量为0.05 mg·g^(-1)DW,降解率为97.73%。Chlorophyll-a and chlorophyll-b content and the dynamic of lipoxygenase activity, which are important to sensory quality of yellow sun-cured tobacco, were studied by using different curing methods. Results indicated that flue-curing measure could increase Lipoxygenase activity and bulking measure could extend effective time of Lipoxygenase. There was a significant negative correlation between lipoxygenase activity and chlorophyll-a, chlorophyll-b content respectively. Degradation rate of chlorophyll reached up to 90%when treated with yellow sun-curing, flue-curing and bulking measures. Bulking measure was the best as chlorophyll content reached 0.05 mg？g-1DW and its degradation rate was 97.73%.

关 键 词：晒黄烟 脂氧合酶 叶绿素 

分 类 号：S572[农业科学—烟草工业]