摘要
本研究采用中短波紫外线和发光二极管(light emitting diode,LED)蓝光联合处理鲜切杏鲍菇,探究光处理对鲜切杏鲍菇贮藏品质的影响。结果表明,光处理可有效保持鲜切杏鲍菇的色泽,延缓总酚、类黄酮及VC含量下降,同时抑制微生物的生长;鲜切杏鲍菇经LED蓝光结合中波紫外线(ultraviolet-B,UV-B)和短波紫外线(ultraviolet-C,UV-C)处理后,VD_(2)的含量可达0.77μg/100 g m_(w),可溶性蛋白含量在贮藏第2天较初始提高了20.85%,在贮藏第10天时还原糖含量是对照组的2.06倍;LED蓝光结合UV-C/B处理增强了活性氧代谢、次生代谢相关酶的活力,抑制了超氧阴离子自由基(O_(2)^(-)·)的产生;鲜切杏鲍菇微观结构表明LED蓝光和UV-C/B光波处理均可抑制细胞壁、线粒体的降解。综上所述,LED蓝光结合UV-C/B处理可以较好地保持鲜切杏鲍菇的贮藏品质和营养价值,有效延长贮藏期。
This work was carried out in order to study the effect of light emitting diode(LED)blue light and/or medium-wave(UV-B)and short-wave ultraviolet(UV-C)on the storage quality of fresh-cut Pleurotus eryngii.Results showed that light irradiation treatments effectively maintained the color of fresh-cut P.eryngii,delayed the decrease of total phenols,flavonoids and vitamin C contents,and inhibited the growth of microorganisms.After the combined treatment,the vitamin D_(2) content of fresh-cut P.eryngii was increased to 0.77μg/100 g m_(w),the soluble protein content was increased by 20.85%compared with the initial value on the second day of storage,and the reducing sugar content was 2.06 folds higher than that of the control group on the 10^(th) day.The combined treatment significantly enhanced the activity of enzymes associated with reactive oxygen species(ROS)metabolism and secondary metabolism,and delayed the production of superoxide anion radicals.Transmission electron micrographs showed that both lights could delay cell wall and mitochondrial degradation of fresh-cut P.eryngii.In summary,LED blue light combined with UV-C/B treatment could effectively maintain the storage quality and nutritional value of fresh-cut P.eryngii and prolong its storage period.
作者
朱凯
吴伟杰
房祥军
陈杭君
刘瑞玲
韩延超
郜海燕
ZHU Kai;WU Weijie;FANG Xiangjun;CHEN Hangjun;LIU Ruiling;HAN Yanchao;GAO Haiyan(Key Laboratory of Post-harvest Handling of Fruits,Ministry of Agriculture and Rural Affairs,Key Laboratory of Fruits and Vegetables Postharvest and Processing Technology Research of Zhejiang Province,Key Laboratory of Postharvest Preservation and Processing of Fruits and Vegetables,China National Light Industry,Food Science Institute,Zhejiang Academy of Agricultural Sciences,Hangzhou 310021,China)
出处
《食品科学》
EI
CAS
CSCD
北大核心
2022年第9期223-231,共9页
Food Science
基金
浙江省重点研发计划项目(2018C02005)
浙江省人才培养计划项目(SKX201901
2018R52020)。
关键词
鲜切杏鲍菇
发光二极管
紫外线
贮藏品质
fresh-cut pleurotus eryngii
light emitting diode
ultraviolet
storage quality
