title: Effect of controlled atmosphere storage on pericarp browning, bioactive compounds and antioxidant enzymes of litchi fruits.
abstract: 'Gola' litchi fruits were stored under ten different CA-combinations at 5±1°C to investigate its effects on pericarp browning, biochemical quality and antioxidative activities. Control fruit turned completely brown after 28days of storage and were excluded from the study. Fruit-stored under CA7-combination (1% O2+5% CO2) showed reduced weight loss, pericarp browning, membrane leakage and malondialdehyde contents. Soluble solid contents, titratable acidity and ascorbic acid contents were higher in CA7-stored fruit. Activities of catalase and superoxide dismutase enzymes, levels of total anthocyanins, DPPH radical-scavenging-activity and phenolic contents were significantly higher in CA7-stored litchi fruit. In contrast, activities of polyphenol oxidase and peroxidase enzymes were substantially lower in fruit kept under CA7-combination. Fruit subjected to CA7-conditions also maintained higher organoleptic quality. In conclusion, 1% O2+5% CO2 CA-conditions delayed pericarp browning, maintained antioxidative activities and biochemical characteristics along with better organoleptic quality of litchi fruit for 35days.
authors.affiliation: Postharvest Research and Training Centre, Institute of Horticultural Sciences, University of Agriculture Faisalabad, 38040, Pakistan. Electronic address: ch.sajid15@yahoo.com.
authors.forename: Sajid
authors.initials: S
authors.lastname: Ali
authors.affiliation: Postharvest Research and Training Centre, Institute of Horticultural Sciences, University of Agriculture Faisalabad, 38040, Pakistan. Electronic address: ahmad_khan157@yahoo.com.
authors.forename: Ahmad Sattar
authors.initials: AS
authors.lastname: Khan
authors.affiliation: Postharvest Research and Training Centre, Institute of Horticultural Sciences, University of Agriculture Faisalabad, 38040, Pakistan. Electronic address: malikaman1@gmail.com.
authors.forename: Aman Ullah
authors.initials: AU
authors.lastname: Malik
authors.affiliation: Department of Chemistry and Biochemistry, University of Agriculture Faisalabad, 38040, Pakistan. Electronic address: mshahiduaf@yahoo.com.
authors.forename: Muhammad
authors.initials: M
authors.lastname: Shahid
mesh_terms: D000872:Anthocyanins / Q000032:analysis; D000975:Antioxidants / Q000032:analysis*; D001205:Ascorbic Acid / Q000032:analysis; D001272:Atmosphere; D061353:Food Storage; D005638:Fruit / Q000737:chemistry* / Q000201:enzymology; D032125:Litchi; D008315:Malondialdehyde / Q000032:analysis; D010088:Oxidoreductases / Q000032:analysis*; D010636:Phenols / Q000032:analysis
chemical_list: D000872:Anthocyanins; D000975:Antioxidants; D010636:Phenols; D008315:Malondialdehyde; D010088:Oxidoreductases; D001205:Ascorbic Acid
keywords: Antioxidant enzymes; Lipid peroxidation; Peroxidase; Polyphenol oxidase; Skin discoloration