Modified atmosphere packaging of cauliflower under ambient and evaporative cooling conditions in Nepal
An experiment was carried out to evaluate the efficacy of perforated modified atmosphere packaging (MAP) on shelf life and quality of cauliflower in an evaporative cooling (EC) structure and ambient room conditions. Freshly harvested cauliflowers 'Snow Mystic' were sealed in 50µ low-density polyethylene (LDPE) bags with different numbers of perforations and kept in EC (28.3±3.7°C, 90-99% RH) and ambient room conditions (30±6°C, 76±15% RH). Perforations were made with an ordinary punching machine. The treatments were: no perforations, four perforations, eight perforations, 12 perforations, 16 perforations, and open in tray (control). Each treatment consisted of four heads of cauliflower and was replicated three times. All the MAPs were opened on the 5th day, and cauliflowers were held under the same conditions for further study. During holding in MAP, bulging of the bag and condensation of water were very high in MAP without perforations. The more perforations, the less was the condensation of water. At the 5th day, all cauliflowers with no perforations were completely spoiled. Weight loss and other physicochemical changes were less in all MAP compared with the controls. All the changes were delayed and shelf life was maintained better in EC. MAP with 16 perforations was the best among all treatments. With the smaller numbers of perforations, the occurrence of browning was higher.
Mishra, B.P., Pant, S.S., Gautam, D.M., Tripathi, K.M., Acedo, A.L., Easdown, W., Hughes, J.A. and Keatinge, J.D.H. (2017). Modified atmosphere packaging of cauliflower under ambient and evaporative cooling conditions in Nepal. Acta Hortic. 1179, 177-182
LDPE, perforations, MAP, storage condition, evaporative cooler