LED红蓝光照射对采后西芹保鲜效果的影响  

Effects of Red and Blue LED Irradiation on Postharvest Preservation of Celery

作　　者：王超[1] 刘斌[1] 张娜[2] 关文强[3] 吴子健[3] 宋健飞[1] 

机构地区：[1]天津商业大学天津市制冷技术重点实验室,天津300134 [2]国家农产品保鲜工程技术研究中心(天津)天津市农产品采后生理与贮藏保鲜重点实验室,天津300384 [3]天津商业大学天津市食品与生物技术重点实验室,天津300134

出　　处：《保鲜与加工》2016年第1期31-34,共4页Storage and Process

基　　金：天津市科技计划项目(13ZCZDNC01500)

摘　　要：为探究LED红蓝光照射对采后西芹保鲜效果的影响,分别将西芹置于温度为4℃、相对湿度为90%的10μmol·m-2·s-1光强和无光条件下,分析10μmol·m-2·s-1光强下迎光面和背光面以及黑暗条件下西芹相关品质指标的变化规律。结果表明,有光和无光处理对西芹失重率的影响差异不大,在适宜的相对湿度条件下,光照不会加大西芹的失重率。10μmol·m-2·s-1光强下迎光面西芹的叶绿素和VC含量显著高于背光面和无光处理组(P<0.05),背光面和无光处理组的叶绿素损失率分别是迎光面西芹的1.56倍和1.5倍、VC损失率分别是迎光面下的1.67倍和1.86倍。10μmol·m-2·s-1光照处理可显著保持采后西芹的硬度。该结果可为LED光照在西芹采后保鲜上的应用提供一定的理论依据。In order to explore the effects of red and blue LED irradiation on postharvest preservation of celery, the celeries were put respectively in light condition of 10μmol-m-2 .s-1 and dark condition with temperature for 4 ℃ and relative humidity for 90%, the quality indexes of the celery under the light receiving surface, back surface of 10 μmol, m-2. s-1 intensity and dark condition were studied. The result showed that, the light treatment and no light condition had little effect on the weight loss rate of celery, under the suitable relative humidity condition, the light treatment would not increase the weight loss rate of celery. The chlorophyll and VC contents under the light receiving surface were significantly higher than that of back surface and dark condition（P〈0.05）. The chlorophyll loss rate of back surface and no light condition was respectively 1.56 multiples and 1.5 multiples than that of light receiving surface, while the VC loss rate of back surface and no light condition was respectively 1.67 multiples and 1.86 multiples than that of lightreceiving surface. The 10 μmol.m-2. s-1 light treatment could significantly maintain the firmness of postharvest celery. The conclusion could provide a theoretical basis for the application of LED light in preservation of celery.

关 键 词：LED红蓝光 西芹 贮藏品质 保鲜 

分 类 号：S636.3[农业科学—蔬菜学]