Avaliação fisiológica de goiabas ‘Kumagai’ submetidas à aplicação de soluções filmogênicas de quitosana.

Abstract

The present work was carried out with the objective of evaluate the postharvest fisiologic of guavas ‘Kumagai’ submitted to application of edible coatings of chitosan. The experiment tested 2 and 6% of chitosan concentrations. The fruits kept storaged at 22ºC and 70%RH during 8 days. The variable studied was weight loss, skin color, pulp firmness, rottenness, respiratory rate and ethylene prodution. A completely randomized experimental design with 3 treatments and 4 replicates of 4 fruits was used. Chitosan 6% was different of another reducing weight loss, maintaining skin color and pulp firmness and difficultting gases permeability. Chitosan 2%, didn’t change guavas fisiology, showing differently behaviour of chitosan 6%.