STORAGE OF MOMBIN FRUITS COATED WITH CASSAVA STARCH AND PVC FILM

• Published in: Caatinga 2017-01, Vol.30 (1), p.244-249
• Main Authors: FREITAS, RAIMUNDA VALDENICE DA SILVA, SOUZA, PAHLEVI AUGUSTO DE, COELHO, EVANDO LUIZ, SOUZA, FRANCISCO XAVIER DE, BESERRA, HIRLLEN NARA BESSA RODRIGUES
• Format: Article
• Language: English
• Subjects: Acidity; AGRICULTURE, DAIRY & ANIMAL SCIENCE; AGRONOMY; Cassava; Coatings; Experimental design; FISHERIES; FOOD SCIENCE & TECHNOLOGY; FORESTRY; Fruits; Polyvinyl chloride; Relative humidity; Skin; Spondias; Starch; Storage; VETERINARY SCIENCES; Weight loss
• ISSN: 1983-2125; 0100-316X; 1983-2125
• DOI: 10.1590/1983-21252017v30n127rc

ABSTRACT The mombin tree (Spondias mombin L.) is found in almost all regions of Brazil. Fresh and processed mombin fruits are increasingly demanded by the market. The objective of this work was to evaluate the post-harvest characteristics of mombin fruits coated with cassava starch and PVC film. Fruits from the mombin cultivar Lagoa-Redonda were harvested at physiological maturity in Limoeiro do Norte, State of Ceará, transported to the Chemistry Laboratory of the Ceará Federal Institute, Limoeiro do Norte campus, and stored for 8 days at 29.7°C and 59% of relative humidity. A completely randomized experimental design in a 3x5 factorial arrangement was used, with three coating types (control, cassava starch at 3%, and cassava starch at 3% combined with PVC film) and five storage times (0, 2, 4, 6 and 8 days), four replicates and five fruits per plot. The fruit skin color, external appearance, soluble solids (SS), titratable acidity (TA), SS/TA ratio and weight loss were evaluated. The PVC film was effective in maintaining the fruit external appearance and decreasing weight loss. The use of cassava starch was not as efficient as the PVC film for conserving mombin fruits. The post-harvest life of fruits was 8 days for those treated with cassava starch or cassava starch combined with PVC film, and 6 days for the control. RESUMO A cajazeira é encontrada em quase todas as Regiões do Brasil vem apresentando crescente demanda de frutos in natura e produtos processados. Este trabalho teve como objetivo avaliar o comportamento pós-colheita de frutos de cajá recobertos com fécula de mandioca e filme PVC. Para realização deste trabalho utilizaram-se frutos da cajazeira do genótipo ‘Lagoa Redonda’ colhidos em Limoeiro do Norte-CE em maturação fisiológica. Em seguida, os frutos foram transportados ao Laboratório de Química do IFCE Campus Limoeiro do Norte e armazenados por 8 dias a 29,7 ºC e 59% de UR. O delineamento experimental foi o inteiramente casualizado em esquema fatorial 3 x 5, com três tipos de revestimento (controle, fécula de mandioca a 3 % e fécula de mandioca a 3 % associada ao filme de PVC) e cinco tempos de armazenamento (0,2, 4, 6 e 8 dias), com quatro repetições de cinco frutos por parcela. Avaliou-se a coloração da casca, aparência externa, teores de sólidos solúveis e de acidez titulável, relação SS/AT e a perda de massa. O uso do filme plástico foi eficiente na conservação da aparência externa e controle da perda de massa. O uso da fécula de mandio