title: Hydrogen peroxide-induced pericarp browning of harvested longan fruit in association with energy metabolism.
abstract: Energy metabolism of "Fuyan" longan fruit treated with hydrogen peroxide (H2O2), the most stable of the reactive oxygen, and its relationship to pericarp browning were investigated in this work. The results displayed that H2O2significantly decreased contents of adenosine triphosphate (ATP) and adenosine diphosphate (ADP). It also inhibited activities of H+-ATPase, Ca2+-ATPase and Mg2+-ATPase in membranes of plasma, vacuole and mitochondria during the early-storage and mid-storage (except for mitochondrial membrane Mg2+-ATPase). These results gave convincing evidence that the treatment of H2O2accelerating pericarp browning in harvested longans was due to a decrease of ATPase activity and available ATP content. This might break the ion homeostasis and the integrity of mitochondria, which might reduce energy charge and destroy the function and compartmentalization of cell membrane. These together aggravated browning incidence in pericarp of harvested longan fruit.
authors.affiliation: Institute of Postharvest Technology of Agricultural Products, College of Food Science, Fujian Agriculture and Forestry University, Fuzhou 350002, China; Indian River Research & Education Center, Horticultural Sciences Department, University of Florida, Fort Pierce 34945, USA.
authors.forename: Yifen
authors.initials: Y
authors.lastname: Lin
authors.affiliation: Institute of Postharvest Technology of Agricultural Products, College of Food Science, Fujian Agriculture and Forestry University, Fuzhou 350002, China.
authors.forename: Yixiong
authors.initials: Y
authors.lastname: Lin
authors.affiliation: Institute of Postharvest Technology of Agricultural Products, College of Food Science, Fujian Agriculture and Forestry University, Fuzhou 350002, China. Electronic address: hetonglin@163.com.
authors.forename: Hetong
authors.initials: H
authors.lastname: Lin
authors.affiliation: Indian River Research & Education Center, Horticultural Sciences Department, University of Florida, Fort Pierce 34945, USA.
authors.forename: Mark A
authors.initials: MA
authors.lastname: Ritenour
authors.affiliation: Guelph Food Research Center, Agriculture and Agri-Food Canada, Guelph, Ontario N1G 5C9, Canada.
authors.forename: John
authors.initials: J
authors.lastname: Shi
authors.affiliation: Institute of Postharvest Technology of Agricultural Products, College of Food Science, Fujian Agriculture and Forestry University, Fuzhou 350002, China.
authors.forename: Shen
authors.initials: S
authors.lastname: Zhang
authors.affiliation: Institute of Postharvest Technology of Agricultural Products, College of Food Science, Fujian Agriculture and Forestry University, Fuzhou 350002, China.
authors.forename: Yihui
authors.initials: Y
authors.lastname: Chen
authors.affiliation: Institute of Postharvest Technology of Agricultural Products, College of Food Science, Fujian Agriculture and Forestry University, Fuzhou 350002, China.
authors.forename: Hui
authors.initials: H
authors.lastname: Wang
mesh_terms: D000244:Adenosine Diphosphate / Q000032:analysis / Q000378:metabolism; D000255:Adenosine Triphosphate / Q000032:analysis / Q000378:metabolism; D004734:Energy Metabolism / Q000187:drug effects*; D005638:Fruit / Q000737:chemistry / Q000378:metabolism*; D006861:Hydrogen Peroxide / Q000494:pharmacology*; D008928:Mitochondria / Q000187:drug effects / Q000378:metabolism; D029631:Sapindaceae / Q000187:drug effects / Q000378:metabolism*
chemical_list: D000244:Adenosine Diphosphate; D000255:Adenosine Triphosphate; D006861:Hydrogen Peroxide
keywords: ATPase; Adenosine triphosphate (ATP); Energy metabolism; Hydrogen peroxide; Longan (Dimocarpus longan Lour.) fruit; Pericarp browning