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Effect of Combination of Hot Water Treatment and Carnauba Wax on<br />

Storage Life of Sweet Potato<br />

Ahmad Arieff Bin Ahmad Azriff<br />

Supervisor: Dr. Suhaizan Lob<br />

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

School of Food Science and Technology<br />

Sweet potato (Ipomea batatas) has been widely cultivated in Malaysia. However, the<br />

adequate supply of sweet potato is still limited due to postharvest disease infection.<br />

This study has been designed to determine the effect of combination of postharvest<br />

treatment; carnabau wax (10%) and hot water treatment (45°C and 55°C) in 15 min<br />

and 25 min dipping on post harvest quality and disease development on sweet<br />

potato.The healthy tuber were treated as described and incubated at room<br />

temperature and assessed every 6 days interval until 30 days. Result showed that<br />

there was no effect of postharvest treatment on brix, firmess and weight loss.<br />

Nevertheless, combination of 10% carnauba wax and 45°C in 15 minutes hot water<br />

treatment showed lower disease incidence compared to other treatments. This study<br />

had demonstrated the potential of the combination between coating and hot water<br />

treatment in reducing the disease development on sweet potato.<br />

1084 | UMT UNDERGRADUATE RESEARCH DAY 2018

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