食品科学2026，Vol.47Issue(17)：272-280,9.DOI:10.7506/spkx1002-6630-20260305-032
紫外发光二极管处理对香菇采后生理特性及贮藏品质的影响
Effect of Ultraviolet Light-Emitting Diode Treatment on Post-Harvest Physiological Characteristics and Storage Quality of Shiitake Mushrooms
摘要
Abstract
To investigate the effects of ultraviolet light-emitting diode(UV-LED)and mercury lamp treatments on the postharvest physiological characteristics and storage quality of shiitake mushrooms(Lentinula edodes),fresh mushrooms were irradiated with either UV-LED(275 nm)or a mercury lamp at a dose of 4 kJ/m2 and then stored at 4℃.The dynamic changes in physicochemical indicators(color,mass loss rate),nutritional components(soluble protein,reducing sugar,free amino acids),bioactive compounds(total flavonoids,total phenols),enzyme activities(polyphenol oxidase(PPO),peroxidase(POD),phenylalanine ammonia-lyase(PAL)),and microbial and sensory qualities of shiitake mushrooms in each group were assessed on days 0,3,6,9,12,15,18,and 21.Two-way analysis of variance(two-way ANOVA)was employed to explore the effects of light source type,storage time,and their interaction on each quality indicator.The results showed that UV-LED treatment significantly enhanced PAL activity,efficiently activating the phenylpropanoid metabolic pathway and thereby increasing the contents of phenolic and flavonoid antioxidants(P<0.05).This treatment also increased PPO and POD activities,enhancing antioxidant defense while limiting enzymatic browning to a low level.Furthermore,UV-LED treatment effectively maintained nutritional components such as free amino acids and reducing sugar,and significantly reduced mass loss rate(P<0.05).In contrast,although mercury lamp treatment exhibited stronger instantaneous sterilization effects in the late storage period due to its wavelength advantage,it induced more severe browning and greater nutrient loss.Therefore,UV-LED treatment prior to cold storage can effectively improve the storage quality of fresh shiitake mushrooms,extending the shelf life to 21 days.关键词
紫外发光二极管/低压汞灯/香菇/采后保鲜/苯丙烷代谢/双因素方差分析Key words
ultraviolet light-emitting diodes/low-pressure mercury lamp/shiitake mushroom/postharvest preservation/phenylpropanoid metabolism/two-way analysis of variance分类
轻工纺织引用本文复制引用
陈丽娜,杜杰,冯玉,胡代花,孔凡舒,杨旭,胡庆元,游松鑫..紫外发光二极管处理对香菇采后生理特性及贮藏品质的影响[J].食品科学,2026,47(17):272-280,9.基金项目
陕西省教育厅服务地方专项计划项目(25JC032) （25JC032）
陕西省科技厅项目(2024NC-YBXM-185) （2024NC-YBXM-185）
校级大学生创新创业项目(S202510720136) （S202510720136）
陕西理工大学校级项目(SLGZHZX04 （）
SLGXCZX02) （）
