Postharvest application of methyl jasmonate for improving quality retention of Agaricus bisporus fruit bodies.
The influence of methyl jasmonate (MeJA) on postharvest quality and enzyme activities, gene expression level, and the functional component content linked to postharvest deterioration in Agaricus bisporus (J.E. Lange) Imbach fruit bodies was investigated. Freshly harvested fruit bodies were treated with 0 (control), 10 and 100 μM MeJA vapor at 20 °C for 12 h and then stored at 10 °C for up to 7 days. The results indicated that treatments with 100 μM MeJA vapor maintained a high level of soluble protein and total sugar, delayed browning, promoted the accumulation of phenolics and flavonoids, and inhibited the increase of respiratory rate and membrane leakage. Furthermore, 100 μM MeJA inhibited the activities of polyphenoloxidase, increased the antioxidant enzymes activities of catalase and superoxide dismutase, and lowered relative expression levels of three genes encoding polyphenol oxidase (AbPPO1, AbPPO2, and AbPPO3) throughout the storage period. Comparatively, 10 μM MeJA also had a clear beneficial effect on postharvest mushroom quality maintenance but was not as effective as 100 μM MeJA treatment. These findings suggest that application of MeJA could have potential in maintaining the quality of harvested A. bisporus fruit bodies.
College of Food Science and Nutritional Engineering, China Agricultural University , Beijing 100083, China.
Demei
D
Meng
Tianzi
T
Song
Lin
L
Shen
Xinhua
X
Zhang
Jiping
J
Sheng
D000085:Acetates / Q000494:pharmacology*; D000364:Agaricus / Q000187:drug effects* / Q000201:enzymology*; D000975:Antioxidants / Q000737:chemistry; D002241:Carbohydrates / Q000032:analysis; D002374:Catalase / Q000378:metabolism; D004156:Catechol Oxidase / Q000037:antagonists & inhibitors / Q000235:genetics* / Q000378:metabolism; D003517:Cyclopentanes / Q000494:pharmacology*; D004044:Dietary Proteins / Q000032:analysis; D005419:Flavonoids / Q000737:chemistry; D005519:Food Preservation; D061353:Food Storage; D015416:Maillard Reaction; D054883:Oxylipins / Q000494:pharmacology*; D010636:Phenols / Q000737:chemistry; D060888:Real-Time Polymerase Chain Reaction; D013482:Superoxide Dismutase / Q000378:metabolism; D013696:Temperature
D000085:Acetates; D000975:Antioxidants; D002241:Carbohydrates; D003517:Cyclopentanes; D004044:Dietary Proteins; D005419:Flavonoids; D054883:Oxylipins; D010636:Phenols; C072239:methyl jasmonate; D004156:Catechol Oxidase; D002374:Catalase; D013482:Superoxide Dismutase