Green LED irradiation promotes the quality of cabbage through delaying senescence and regulating glucosinolate metabolism  

作　　者：郭峰 周宏胜 胡花丽 张映曈 凌军 刘雪松 罗淑芬 李鹏霞 Feng Guo;Hongsheng Zhou;Huali Hu;Yingtong Zhang;Jun Ling;Xuesong Liu;Shufen Luo;Pengxia Li(Institute of Agricultural Facilities and Equipment,Jiangsu Academy of Agricultural Sciences,Nanjing,China;The College of Food Science,Shenyang Agricultural University,Shenyang,China;Jiangsu Academy of Agricultural Sciences,Key Laboratory of Cold Chain Logistics Technology for Agro-Products,Ministry of Agriculture and Rural Affairs,Nanjing,China)

机构地区：[1]Institute of Agricultural Facilities and Equipment,Jiangsu Academy of Agricultural Sciences,Nanjing,China [2]The College of Food Science,Shenyang Agricultural University,Shenyang,China [3]Jiangsu Academy of Agricultural Sciences,Key Laboratory of Cold Chain Logistics Technology for Agro-Products,Ministry of Agriculture and Rural Affairs,Nanjing,China

出　　处：《Food Quality and Safety》2024年第1期190-200,共11页食品品质与安全研究（英文版）

基　　金：the Key and General Programs of Modern Agriculture in Jiangsu Province(No.BE2022368);Jiangsu Agricultural Science and Technology Innovation Fund(No.CX(20)1008),China.

摘　　要：Light-emitting diode(LED)irradiation can affect postharvest vegetable and fruit shelf life and nutritional quality.In this study,11 kinds of glucosinolates(GLS)and 6 types of GLS breakdown products were identified in cabbage leaves.To investigate the effects of LED irradiation on quality and GLS metabolism,postharvest cabbage was irradiated with 25μmol/(m2·s)green LED(GL)light at room temperature for 12 d.The dark condition and natural light were used as controls.GL irradiation inhibited the respiration rate and the accumulation of malondialdehyde,and maintained higher cabbage sensory score,chlorophyll content,and antioxidant enzyme activities,thus extending its postharvest shelf life.Additionally,GL irradiation promoted GLS profile accumulation,including glucoraphanin,glucoiberin,gluconapin,gluconasturtiin,glucobrassicin,and sinigrin,which could have resulted from upregulated expression of the transcription factors MYB28 and MYB51,and the key genes involved in GLS biosynthesis(CYP83A1,CYP83B1,ST5b,and UGT74B1).Furthermore,GLS degradation was promoted by this treatment during the late stage of shelf life,as higher myrosinase activity and relative MYR and ESM expression levels were found in treated cabbage leaves,resulting in higher isothiocyanate(ITC)and indole-3-carbinol contents after day 6.Therefore,GL irradiation was beneficial for cabbage preservation.

关 键 词：CABBAGE light SENESCENCE glucosinolate metabolism. 

分 类 号：TS255[轻工技术与工程—农产品加工及贮藏工程]