Effect of Cassava Starch Coating on Quality and Shelf Life of Fresh-Cut Pineapple (Ananas Comosus L. Merril cv "Perola")

Autor(es)

Bierhals, Vania S. ; Chiumarelli, Marcela ; Hubinger, Miriam D.

• Tipo de documento: Artigo Científico
• Fonte: Journal of Food Science; v. 76, n. 1, p. 11-pg., 2011-01-01.

Resumo

This research studied the influence of treatment with ascorbic acid, citric acid, and calcium lactate dipping and cassava starch edible coatings on quality parameters and shelf life of fresh-cut pineapple in slices during 12 d at 5 degrees C. After previous tests, the treatments selected for this study were samples dipped into antibrowning solution with 0.5% of ascorbic acid and 1% of citric acid, with and without 2% of calcium lactate and coated with 2% of cassava starch suspensions. Changes in weight loss, juice leakage, mechanical properties (stress at failure), color parameters (L* and H*), ascorbic acid content, sensory acceptance, and microbial growth of fruits were evaluated. Samples only treated with antibrowning agents were used as control. Edible coatings with and without calcium lactate were efficient in reducing weight loss, juice leakage, and maintaining firmness during storage. However, these samples showed more browning and the ascorbic acid content was reduced. All treatments presented good sensory acceptance (scores above 6). The determining factor of shelf life of pineapple slices was the microbial spoilage. A shelf life of 8 d was obtained for pineapple slices only treated with antibrowning agents. On the other hand, coated samples showed a reduced shelf life of 7 d and higher yeast and mold growth. Thus, although cassava starch coatings were efficient in reducing respiration rate, weight loss, and juice leakage and maintained mechanical properties, these treatments were not able to increase the shelf life of minimally processed pineapple. (AU)

• Processo FAPESP: 09/51420-4 - Avaliação da qualidade de frutas minimamente processadas com coberturas comestíveis
• Beneficiário: Miriam Dupas Hubinger
• Modalidade de apoio: Auxílio à Pesquisa - Regular