Abstract：
:Little is known about the variations of fresh fruit biomembrane and its physiological and biochemical characteristics during storage. A navel orange mutant 'Gannan No.1' (Citrus sinensis Osbeck) showed higher membrane stability and titratable acid while lower calyx senescence compared with wild-type 'Newhall'. The membrane damage was significantly reduced in 'Gannan No.1' under 10% polyethylene-glycol (41.16% vs. 8.77%) and 30% polyethylene-glycol (52.59% vs.16.11%) treatments on day 45 after harvest. Consistently, membrane electrolyte leakage and malondialdehyde were significantly decreased in 'Gannan No.1', and superoxide dismutase and glutathione reductase were activated. A metabolic analysis was performed to evaluate membrane fatty acid unsaturation and peroxidation. Linolenic acid and hexadecylenic acid contributed to the higher degree of unsaturated fatty acids in 'Gannan No.1'. Furthermore, 'Gannan No.1' accumulated stress-resistant metabolites such as proline, α-tocopherol and glutathione. Correlation analysis of membrane homeostasis indexes with quality parameters showed the importance of biomembrane stability in maintaining citrus fruit quality.
journal_name
Food Chemjournal_title
Food chemistryauthors
He Y,Li Z,Tan F,Liu H,Zhu M,Yang H,Bi G,Wan H,Wang J,Xu R,Wen W,Zeng Y,Xu J,Guo W,Xue S,Cheng Y,Deng Xdoi
10.1016/j.foodchem.2019.04.009subject
Has Abstractpub_date
2019-09-15 00:00:00pages
314-324eissn
0308-8146issn
1873-7072pii
S0308-8146(19)30658-2journal_volume
292pub_type
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