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1PhD in Agricultural Engineering, Professor of the Technical Vocational Center, CVTEC Crato Campus, Crato-CE, Brazil. E-mail: reginacggn@ yahoo.com.br 2PhD in Agronomy, Associate Professor of the Biological Sciences Course, CCS/UECE, Fortaleza-CE, Brazil. E-mail: eliseu.lucena@uece.br 3PhD in Food Engineering, Full Professor of the Department of Agricultural Engineering, CTRN/UFCG, Campina Grande-PB, Brazil. E-mail: josivanda@gmail.com 4PhD in Agricultural Engineering, Professor of the Federal Institute of Ceara, IFCE Crato Campus, Crato-CE, Brazil. E-mail: dyalla@ifce.edu.br 5Food Technologist, Centec Technology Colleges, FATEC Cariri, Juazeiro do Norte-CE, Brazil. E-mail: dannaya_gomes@yahoo.com Abstract The objective of this study was to evaluate the post-harvest quality of bananas (Musa x paradisiaca L.) Prata-anã and Nanica after application of exogenous ethylene (C2H4) during maturation. Bananas of Prata-anã cultivar were harvested 18 weeks after the anthesis (WAA) and those of Nanica cultivar with 13 WAA. After harvest, the fruits were submitted to 0, 1, 2, 3, 4 and 5 applications of 15 mL of ethyl-5/m3 in refrigeration chambers at 15oC and later stored at room temperature (24 to 28oC) and refrigerated at 15°C for 10 days. Peel color, fresh weight loss, firmness, total soluble solids, total bark chlorophyll, total bark and pulp carotenoids were evaluated at 0, 3, 4, 7 and 10 days after harvest (DAH). The Assistat program was used in statistical analysis. Among the storage conditions, fruits kept under refrigeration had a longer shelf life. The Prata-anã cultivar was superior to Nanica, presenting maturation indexes ideal for transport and commercialization, evaluated for the interactions of storage temperature, ethylene (C2H4) applications and storage time. It was concluded that the banana Prata-anã requires 3 and Nanica 4 applications of ethyl, for the harvest with 18 and 13 weeks, respectively, in order to promote a fast and uniform maturation.

Post-harvest quality of bananas Prata-anã and Nanica after application of exogenous ethylene in maturation