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Enzymatic browning and its inhibition in new apple cultivars slices using 4-hexylresorcinol in combination with ascorbic acid / Pardeamiento enzimático y su inhibición en rodajas de manzanas de nuevas variedades utilizando 4-hexilresorcinol en combinación con ácido ascórbico

Department of Biological Systems Engineering, Washington State University Pullman, WA, 99164-6120 USA

G.V. Barbosa-Cánovas

Department of Biological Systems Engineering, Washington State University Pullman, WA, 99164-6120 USA

Enzymatic browning in minimally processed apples of new cultivars (i.e. Braeburn, Criterion, Fuji, Gala, Jonagold) was investigated at 2.5, 12 and 20 °C, and compared with traditional cultivars (Golden Delicious and McIntosh). Browning inhibition by ascorbic acid (AA) and a mixture of ascorbic acid and 4-hexylresorcinol (AH) was also studied. Among the new cultivars, Jonagold had the slowest browning rate and Braeburn had the fastest rate. Of the two traditional cultivars, McIntosh had the faster browning rate. The temperature sensitivity of the browning varied among cultivars, where Q₁₀ ranged from 1.3 to 4.4 (calculated from colour parameter a*), and the acti vation energy (E_a) ranged from 8.0 to 18.3 kcal/mol. The browning rate dependence on temper ature was as follows: Fuji < McIntosh < Criterion < Braeburn and Gala < Golden Delicious < Jonagold. Browning was inhibited significantly using AH and AA. The AH treatment resulted in a better inhibition of enzymatic browning for most of the cultivars.

Key Words: enzymatic browning • apple cultivars • 4-hexylresorcinol • ascorbic acid

Food Science and Technology International, Vol. 3, No. 3, 195-201 (1997)
DOI: 10.1177/108201329700300307


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