A First Approach of Using Ultrasound as an Alternative for Blanching in Vacuum-Packaged Potato Strips

Autor(es)

Amaral, Rivia D. A. ; Benedetti, Benedito C. ; Pujola, Montserrat ; Achaerandio, Isabel ; Bachelli, Mara L. B.

• Tipo de documento: Artigo Científico
• Fonte: Food and Bioprocess Technology; v. 9, n. 10, p. 1794-1801, OCT 2016.
• Citações Web of Science: 3

Resumo

The effect of ultrasound (US) (40 kHz, 200 W, 3 min), blanching (85 A degrees C, 3.5 min), and the combination of both methods was evaluated on the quality of vacuum-packaged potato strips stored at 3 +/- 1 A degrees C for up to 10 days. For this study, two cultivars of potatoes were assessed. For blanched Agata samples, the lightness (L{*}) decreased over 12 % (p < 0.05). Moreover, their hue increased up to 100, obtaining lesser yellow potato strips. In contrast, US did not affect the hue values. The losses of firmness of blanched potato strips were notable (35 % for Agata and 51 % for Agria), whereas US did not change this property (p < 0.05). Nevertheless, no significant differences were found in the total starch content at 10 days. Agata and Agria showed different metabolic behaviors of sucrose in the refrigerated storage. Therefore, Agria cultivar retained better color after frying. These results suggest that US had less impact on color and improve the firmness in vacuum-packaged potato strips with no added chemicals. (AU)

• Processo FAPESP: 11/20093-8 - Efeito de inibidores de escurecimento na qualidade de batatas minimamente processadas
• Beneficiário: Rívia Darla Álvares Amaral
• Modalidade de apoio: Bolsas no Brasil - Doutorado