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

被引：1

作者：

Cheng, Le ^{[1
,2
]}

Zhang, Mingfang ^{[1
]}

Bai, Haoyue ^{[2
]}

Yang, Fengping ^{[1
]}

Zhang, Xiuhai ^{[1
]}

Ren, Difeng ^{[2
]}

Du, Yunpeng ^{[1
]}

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

来源：

FOOD CHEMISTRY-X | 2024年 / 24卷

基金：

中国国家自然科学基金;

关键词：

Lanzhou lily bulbs; Ultraviolet (UV)-C; L-cysteine; Storage quality; Reactive oxygen species metabolism; FRUIT; SENESCENCE; PEARS; LIGHT;

D O I：

10.1016/j.fochx.2024.101813

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

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.

引用

页数：12