Correlation between lipoperoxidation levels, peroxi dase activity and chilling injury on temperature conditioned and coated Persian lime (Citrus latifolia Tanaka) stored at 6 C
Fernando Rivera-Cabrera, Zulema Sotelo-Rodriguez, Elsa Bosquez-Molina, Julieta Dominguez-Soberanes, Jaime Vernon-Carter, Fernando Diaz-de-Leon-Sanchez
Proceedings of 26th International Horticultural Congress. Volume of Abstract . Toronto, Canada, 11-17 August, 2002. Abstract S20-O-101. pp. 523.
2002
บทคัดย่อ
Most subtropical crops are cold susceptible, any decrease below critical storage temperature (10-13 0C) reduces storage life. It seems that moderate cold stress might induce an adaptation response in fruits (cross-tolerance), toward a severe cold stress conditions. The objective of this study was to evaluate the effect of the application of temperature conditining (13 0C for 48 hours) and waxing (coating based on candelilla-mezquite-mineral oil (CMMO) or the commercial wax used in the region) on the reduction of chilling injury in Persian lime (Citrus latifolia Tanaka) from Martinez de la Torre, Ver. Mexico, stored at 6 0C, RH 90% for 30 days. Chilling injury percentage, peel color, phsiological weight loss percentage, titratible acidity (expressed as % of citric acid), total soluble solid content (TSS), liperoxidation levels and peroxidase activity were ealuated. No differences among treatmetns were found in chemical composition. Cold temperature conditioning (13 0C for 48 hours) combined with the application of the commercial wax resulted in the least chilling injury (less than 1% of the flavedo damaged) and the greenest color, showing a direct correlation with lipoperoxidation levels (a measure of membreane injury) that were the lowest. Additionally, peroxidase activity exhibited the highest levels and the least % PWL (less than 10% after 30 days of storage).