NaCl胁迫处理对采后马铃薯见光绿变的影响  

Effect of NaCl Stress on Greening of Postharvest Potatoes Under Light

作　　者：董田田 孟卫芹[1] 王庆国[1] Dong Tiantian;Meng Weiqin;Wang Qingguo(College of Food Science and Engineering,Shandong Agriculture University,Tai＇ an Shandong 271018)

机构地区：[1]山东农业大学食品科学与工程学院,山东泰安271018

出　　处：《中国农学通报》2018年第21期29-34,共6页Chinese Agricultural Science Bulletin

基　　金：山东省科技发展计划"马铃薯物流保鲜关键技术及新产品研发与应用"(2014GNC113008);山东省现代农业产业技术体系薯类产业创新团队建设"薯类产后贮藏加工岗位"(SDAIT-10-022-11);双一流建设专项协同创新团队"园艺作物商品化处理与产业化加工"(SYL2017XTTD04)

摘　　要：为探究NaCl胁迫处理对采后马铃薯见光绿变及龙葵素生成的影响,本试验先将马铃薯块茎置于20%NaCl溶液中分别浸泡6 h和12 h,后置于光照条件下进行试验。结果表明:与见光对照相比,2个处理均显著提高了马铃薯的综合感官品质,货架期延长1倍;NaCl溶液处理较好地抑制了马铃薯表皮绿变,在同一光照时间,处理马铃薯表皮a*、叶绿素含量显著低于对照组;8天货架期后,2个处理马铃薯龙葵素含量显著低于见光对照组,8天货架期间,对照龙葵素增加了122%,而NaCl处理6 h和12 h的龙葵素含量分别增加了68.86%和91.42%。因此,20%NaCl处理可有效抑制马铃薯表皮绿变和龙葵素的产生,并且20%NaCl处理对马铃薯发芽也有明显的抑制作用。To study the effect of NaCl stress treatment on greening and toxic glycoalkaloids production of postharvest potato under light, potato tubers were first dipped in 20% NaCl solution for 6 h and 12 h respectively and then stored under the lighting condition. The results showed that, compared with the control,two NaCl stress treatments both improved the overall sensory quality of potatoes significantly and the shelf life doubled that of the control. NaCl stress treatments inhibited potato peel greening obviously. Under the same time of illumination, the value of a＊and chlorophyll contents of potatoes with NaCl stress treatments were lower than those of control significantly. After 8-day shelf life, the glycoalkaloids content of potatoes under the two treatments were significantly lower than those of the control. During 8-day shelf life, the glycoalkaloids content of the control increased by 122% while the glycoalkaloids contents under NaCl treatments for 6 h and 12 h increased by 68.86% and 91.42% respectively. So, 20% NaCl treatment could inhibit potato greening and glycoalkaloids production effectively. Also, 20% NaCl treatment also had obvious inhibitory effect on potato germination.

关 键 词：马铃薯 NACL处理 绿变控制 龙葵素 光照 

分 类 号：TS225.3[轻工技术与工程—粮食、油脂及植物蛋白工程]