Effect of atmospheric modification, 1-MCP and chemicals on quality of fresh-cut banana

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Fresh-cut banana slices have a short shelf-life due to fast browning and softening after processing. The effects of atmospheric modification, exposure to1-MCP, and chemical dips on the quality of fresh-cut bananas were determined. Low levels of O2 (2 and 4 kPa) and high levels of CO2 (5 and 10 kPa), alone or in combination, did not prevent browning and softening of fresh-cut banana slices. Softening and respiration rates were decreased in response to 1-MCP treatment (1 µLL−1 for 6 h at 14 °C) of fresh-cut banana slices (after processing), but their ethylene production and browning rates were not influenced. A 2-min dip in a mixture of 1% (w/v) CaCl2 + 1%(w/v) ascorbic acid + 0.5% (w/v) cysteine effectively prevented browning and softening of the slices for 6 days at 5 °C. Dips in less than 0.5% cysteine promoted pinking of fresh-cut banana slices, while concentrations between 0.5 and 1.0% cysteine delayed browning and softening and extended the post-cutting life to 7 days at 5 °C.

Eduardo V. de B. Vilas-Boas
Adel A. Kader
Postharvest Biology and Technology