Effects of hydrogen water treatment on antioxidant system of litchi fruit during the pericarp browning

Ze Yun; Huijun Gao; Xi Chen; Zhongsuzhi Chen; Zhengke Zhang; Taotao Li; Hongxia Qu; Yueming Jiang

doi:10.1016/j.foodchem.2020.127618

Effects of hydrogen water treatment on antioxidant system of litchi fruit during the pericarp browning

Food Chem. 2021 Jan 30:336:127618. doi: 10.1016/j.foodchem.2020.127618. Epub 2020 Jul 25.

Authors

Ze Yun¹, Huijun Gao², Xi Chen³, Zhongsuzhi Chen⁴, Zhengke Zhang⁵, Taotao Li⁶, Hongxia Qu⁷, Yueming Jiang⁸

Affiliations

¹ Key Laboratory of Plant Resources Conservation and Sustainable Utilization, Center of Economic Botany, Core Botanical Gardens, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, China. Electronic address: yunze@scbg.ac.cn.
² Institute of Fruit Tree Research, Guangdong Academy of Agricultural Sciences, Guangzhou, China. Electronic address: huijun_gao@aliyun.com.
³ Key Laboratory of Plant Resources Conservation and Sustainable Utilization, Center of Economic Botany, Core Botanical Gardens, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, China. Electronic address: chenxi9516@scbg.ac.cn.
⁴ Key Laboratory of Plant Resources Conservation and Sustainable Utilization, Center of Economic Botany, Core Botanical Gardens, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, China. Electronic address: zszchen@scbg.ac.cn.
⁵ Hainan University, College of Food Science and Technology, Haikou, China.
⁶ Key Laboratory of Plant Resources Conservation and Sustainable Utilization, Center of Economic Botany, Core Botanical Gardens, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, China. Electronic address: taotaoli@scbg.ac.cn.
⁷ Key Laboratory of Plant Resources Conservation and Sustainable Utilization, Center of Economic Botany, Core Botanical Gardens, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, China. Electronic address: q-hxia@scbg.ac.cn.
⁸ Key Laboratory of Plant Resources Conservation and Sustainable Utilization, Center of Economic Botany, Core Botanical Gardens, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, China. Electronic address: ymjiang@scbg.ac.cn.

PMID: 32771896
DOI: 10.1016/j.foodchem.2020.127618

Abstract

Litchi fruit were exposed to 0.7 PPM hydrogen water (HW) before storage at 25 ± 1 ℃. HW treatment delayed the pericarp browning and maintained the total soluble solids (TSS) of litchi fruit. Then, a total of 25 antioxidant system-related characters were determined to evaluate the effects of HW on antioxidant system during pericarp browning. Compared with control pericarp, the pericarp of HW-treated litchi fruit exhibited higher levels of superoxide radical (O_2^-·) scavenging activity, glutathione (GSH), monodehydroascorbate reductase (MDHAR), polyphenol oxidase (PPO) and total flavonoids during whole storage, higher levels of hydrogen peroxide (H₂O₂), catalase (CAT), glutathione disulfide (GSSG), ascorbate oxidase (AAO) and total phenols only on day 1, and higher levels of ascorbate peroxidase (APX), total anthocyanin, glutathione reductase (GR) and glutathione peroxidases (GPX) at later stage of storage. Those HW-induced antioxidant system-related characters might directly or indirectly enhanced the antioxidant capacity and delayed the pericarp browning of litchi.

Keywords: Ascorbic acid-related characters; Glutathione-related characters; Postharvest storage; Reactive oxygen species-related characters; Secondary metabolite-related characters; ‘Huaizhi’.

MeSH terms

Antioxidants / chemistry*
Catalase / metabolism
Discriminant Analysis
Flavonoids / chemistry
Flavonoids / metabolism
Food Storage / methods*
Fruit / chemistry
Fruit / drug effects
Fruit / metabolism
Glutathione Reductase / metabolism
Hydrogen / chemistry*
Hydrogen / pharmacology
Hydrogen Peroxide / metabolism
Least-Squares Analysis
Litchi / chemistry
Litchi / drug effects
Litchi / metabolism*

Substances

Antioxidants
Flavonoids
Hydrogen
Hydrogen Peroxide
Catalase
Glutathione Reductase