烤烟新品种豫浓香201中部叶的烘烤特性及烘烤工艺

Study on curing characteristics and technology for middle leaves of new flue-cured tobacco variety Yunongxiang 201

烤烟新品种豫浓香201是中烟100的突变体,为探索豫浓香201中部叶适宜的烘烤工艺,从烘烤特性入手,以中烟100为对照,设置暗箱试验和电烤箱试验,研究了豫浓香201中部烟变黄变褐特性、失水特性、叶绿素降解特性、多酚氧化酶活性变化、淀粉酶活性的变化,并根据其烘烤特性调整烘烤工艺。豫浓香201完全变黄时间为48 h,暗箱处理168 h后变褐程度仍不到30%,变黄、变褐特性较好;失水均衡性为1.10,失水均衡性较好;叶绿素降解速率在72 h为1.30%·h^(-1),降解量为93.68%,降解特性较好;多酚氧化酶活性平均值为0.29 U,耐烤性较好;豫浓香201淀粉酶活性高于中烟100。豫浓香210烤后烟叶基本性状、外观质量、感官质量均优于中烟100。综合认为豫浓香201中部烟易烤性较好,耐烤性较好。与中烟100相比较,变黄时间减少6 h左右,定色时间减少4 h左右。

The new flue-cured tobacco variety Yunongxiang 201 is a mutant of Zhongyan 100.In order to explore the suitable curing technology for the middle leaves of Yunongxiang 201,using Zhongyan 100 as control,the characteristics of yellowing,browning,water loss,chlorophyll degradation,polyphenol oxidase activity(PPO)changes,amylase activity changes were studied by using dark chamber and electric-heated flue-curing barn.The complete yellowing time of Yunongxiang 201 was 48 h,and the browning degree was still less than 30%after 168 h of dark chamber treatment,and the yellowing and browning characteristics were better.The equilibrium of water loss was 1.10,and the degradation rate of chlorophyll was 1.30%·h^(-1) at 72 h,and the degradation amount was 93.68%,indicating good degradation characteristics.The average activity of polyphenol oxidase was 0.29 U,and the roasting tolerance was good.The amylase activity of Yunongxiang 201 was higher than that of Zhongyan 100.The basic characteristics,appearance quality and sensory quality of flue-cured leaves of Yunongxiang 210 after curing were better than those of Zhongyan 100.It is generally believed that the smoke in the middle part of Yunongxiang 201 has good roasting ability and good roasting resistance.Compared with Zhongyan 100,the yellowing time was reduced by about 6 h,and the color fixing time was reduced by about 4 h.