The impact of bio-control management, storage temperature and packaging on postharvest characterization of Chinese flowering cabbage

摘要

In the past few decades, insecticides have been the most practical method of pest control in the production of a sufficient world food supply. The rotation of insecticide groups can avoid resistance, but their misuse can lead to extremely toxic residue on products. The objective of this study, therefore, was to assess the impact of bio-control and synthetic insecticide methods as well as storage temperature and packaging on postharvest parameters in Chinese flowering cabbage. Our results revealed that weight loss from the bio-control plot showed significant differences in day 3 and day 6 at 22.54±9.21 and 29.52±9.24, compared to the insecticide controlled plot at 61.97±9.41 and 61.84±9.47, respectively. The stem widths produced in the bio-control plot at day 0, 3, and 6 were 3.48±0.46, 2.98±0.33, and 2.95±0.45 cm, respectively, which proved greater than those in the insecticide plot at 2.72±0.41, 2.13±0.46, and 1.82±0.33 cm, respectively. Firmness was correlated fairly well with the storage period, in which the firmness values of the bio-control plot (36.13±6.74) N were lower than those in the insecticide-based plot (54.37±7.33 N) at day 6 of the storage. There were also significant differences found between the treatments in Chlorophyll a and b contents at day 5 of the storage (P<0.05). There was no significant difference (P<0.05) of all parameters between storage temperature at 10 and 2 5°C but after 6 days of storage vegetable deteriorated and was unable to measure at 25°C. PP plastic bag could maintain weight loss and stem width for 3 days and 5 days for chlorophyll content.