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Effects of Nitrogen and Carbon Dioxide Gas Fumigation on Browning<br />

Incidence and Postharvest Quality of Minimally Processed Carambola<br />

(Averrhoa carambola L.)<br />

Azuarizam Alang<br />

Supervisor: Dr Wan Zaliha Wan Sembok<br />

Bachelor of Science Agrotechnology (Postharvest Technology)<br />

School of Food Science and Technology<br />

Minimally processed (MP) carambola has a high demand in food market due to many<br />

advantages. In present study, the effects of different volumes of nitrogen (N2), carbon<br />

dioxide (CO2) and its combination (0mL, 15mLN2, CO2, 25mLN2, CO2,<br />

15mLN2+15mLCO2, 25mLN2+25mLCO2, 15mLN2+25mLCO2 and 25mLN2+15mLCO2)<br />

on MP carambola were evaluated under storage of 5°C. Fruit colour, browning score,<br />

weight loss, flesh firmness, titratable acidity, soluble solids concentration, ascorbic<br />

acid concentration, and total phenolic content were determined for twelve days’<br />

period. N2 and CO2 gas fumigation at varying volumes and combinations resulted in a<br />

significant difference (p≤0.05) in reducing browning incidence, titratable acidity and<br />

ascorbic acid concentrations of MP carambola, however, others quality parameters<br />

were not affected. In conclusion, 25mLN2+15mLCO2 gas fumigation had the ability in<br />

reducing the browning incidence and maintaining other quality attributes of MP<br />

carambola stored at 5°C for 12 days.<br />

1082 | UMT UNDERGRADUATE RESEARCH DAY 2018

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