Postharvest application of methyl jasmonate, 1-methylcyclopropene and salicylic acid extends the cold storage life and maintain the quality of ‘Kinnow’ mandarin (Citrus nobilis L. X C. deliciosa L.) fruit
A.K Baswal, H.S Dhaliwal, Zora Singh, B.V.C Mahajan and K.S Gill
Postharvest Biology and Technology, Volume 161, March 2020, 111064
2020
บทคัดย่อ
The objective of the present investigation was to evaluate the effects of different concentrations of 1-methylcyclopropene (1-MCP; 0.5, 1.0 and 1.5โ€ฏµL L-1), methyl jasmonate (MeJa; 0.001, 0.002 and 0.003โ€ฏµmolโ€ฏL-1) and salicylic acid (SA; 0.001, 0.002 and 0.003โ€ฏµmolโ€ฏL-1) on cold storage life and fruit quality of ‘Kinnow’ mandarin for up to 75 d. Weight loss, spoilage loss, firmness, juice percentage, soluble solids content, titratable acidity, pectin content, total carotenoids and ascorbic acid content, organoleptic sensory attributes, pectin methylesterase and cellulase activity were determined. MeJa (0.001โ€ฏµmolโ€ฏL-1), 1-MCP (1.5โ€ฏµL L-1) and SA (0.002โ€ฏµmolโ€ฏL-1) were the most effective in decreasing the weight loss, spoilage, firmness, juice content, and were retarding the activities of pectin methylesterase and cellulase compared to control. Treated fruit also had higher contents of ascorbic acid, pectin, total carotenoids and sensory attributes for 75 d of cold storage. In conclusion postharvest treatment of ‘Kinnow’ mandarin with MeJa (0.001โ€ฏµmolโ€ฏL-1), 1-MCP (1.5โ€ฏµL L-1) fumigation and SA (0.002โ€ฏµmolโ€ฏL-1) extended cold storage life and maintained quality.