Combined ultraviolet-C radiation and L-cysteine treatment improves the post-harvest quality and volatile compounds of edible Lanzhou lily bulbs (Lilium davidii var. unicolor) by regulating reactive oxygen species metabolism
文献类型： 外文期刊
作者： Cheng, Le 1 ; Zhang, Mingfang 1 ; Bai, Haoyue 2 ; Yang, Fengping 1 ; Zhang, Xiuhai 1 ; Ren, Difeng 2 ; Du, Yunpeng 1 ;
作者机构： 1.Beijing Acad Agr & Forestry Sci, Inst Grassland Flowers & Ecol, Ornamental & Edible Lily Engn Res Ctr Natl Forestr, Beijing 100097, Peoples R China
2.Beijing Forestry Univ, Coll Biol Sci & Biotechnol, Dept Food Sci & Engn,Beijing Key Lab Food Proc & S, State Key Lab Efficient Prod Forest Resources, Beijing 100083, Peoples R China
关键词： Lanzhou lily bulbs; Ultraviolet (UV)-C; L-cysteine; Storage quality; Reactive oxygen species metabolism
期刊名称：FOOD CHEMISTRY-X （ 影响因子：8.2； 五年影响因子：8.2 ）
ISSN： 2590-1575
年卷期： 2024 年 24 卷
页码：
收录情况： SCI
摘要： Lanzhou lily bulbs (Lilium davidii var. unicolor) are Chinese traditional edible fruits; however, industrial benefits are limited owing to ineffective post-harvest preservation technology. This study investigated the effect of 4.5 kJ/m(2) ultraviolet (UV)-C radiation and 2.0 g/L L-cysteine (L-cys) treatment on storage quality and reactive oxygen species (ROS) metabolism in lily bulbs. The combined UV-C/L-cys treatment inhibited the increase in decay rate, weight loss, Delta E* and reducing sugar content; delayed the decrease of firmness and starch content; retained aromatic volatile compounds; and reduced pungent compounds. UV-C/L-cys treatment reduced H2O2 content, O-2(center dot-) production rate, lipoxygenase activity and malondialdehyde content by maintaining high ROS-scavenging enzymes (superoxide dismutase and catalase) activities and substances (total phenolic and ascorbic acid) levels, thereby protecting mitochondrial structure. Mantel test indicated that post-harvest quality and volatile compounds were closely related to ROS metabolism. Hence, UV-C/L-cys treatment can efficiently delay lily bulb senescence by reducing ROS accumulation during storage.
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