W. Jiang
College of Food Science & Nutritional Engineering, China Agricultural
University, PO Box 204, Qinghua Donglu No. 17, Beijing, 100083, PR
Chinajiangweibo@vip.sina.com;jwb6233@263.net
M. Zhang
J. He
College of Food Science & Nutritional Engineering, China Agricultural
University, PO Box 204, Qinghua Donglu No. 17, Beijing, 100083, PR China
L. Zhou
College of Agricultural Biotechnology, China Agricultural University,
Yuanmingyuan Xilu No. 2, Beijing, 100094, PR China
Ripe green banana (Musa sp., AAA group, cv. Zhonggang) fruits treated with
1-methylcyclopropene (1-MCP) significantly delayed the peaks of respiration rate
and ethylene production but did not reduce the peak height. Mature banana fruits
were also treated with 1-MCP for 24 h at 20 C and then exposed to 50 mL/L
ethylene or stored at different temperatures to analyse the effects of external
added ethylene. Reductions in firmness, titratable acidity (TA) and starch
content (SC) of banana fruits were remarkably delayed by 1-MCP treatment. 1-MCP
treatment also delayed the increase of total soluble sugar (TSS) and soluble
pectin (SP) contents. Soluble solids (SS) content in the 1-MCP-treated fruit
remained almost unchanged during the first 10 days of storage at 20 C. No
significant differences in TA, TSS, SP and SS levels were observed between the
fruit treated with 1-MCP alone and the fruit treated with 1-MCP plus ethylene.
The 1-MCP effects on all the parameters related to banana ripening were enhanced
by low temperature storage and reduced by high temperature storage.
Key Words: methylcyclopropene • 1-MCP • banana • exogenous ethylene • firmness •
quality
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