Effect of pre-treatments in production of muskmelon powder by foam mat drying and air fry drying

Ahmad Nasaruddin, Muhamad Naqib (2020) Effect of pre-treatments in production of muskmelon powder by foam mat drying and air fry drying. [Project Paper] (Submitted)

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Abstract

Muskmelon or Cucumis melo is a species of melon that has been developed into many cultivated varieties. Melons are 90%, water 9%, carbohydrates with less than 1% of protein and fat. Therefore, shelf life of muskmelons are short when stored. In order to elongate the shelf life, dehydration are used to form muskmelon powders but the quality of product may be affected. Then, pre-treatments were used to control product's quality. The effect of pre-treatments (citric acid & blanch) with different drying methods was investigated. Citric acid pre-treatment have two parameters (0.25% & 0.5 concentration) while blanch pre-treatment also have two parameters (60 degrees C & 70 degrees C). Then, it is dried with foam mat drying (50% & 100% fan speed) and air fry dryrng (60 degrees C & 70 degrees C) with two parameters respectively. The pre-treatments were found to affect the color differences, bulk and tap density, flow ability and affected the drying curves. Blanch pre-treatment does retained the dried muskmelon powders colors better and produced better flow ability than.citric acid pre-treatment. Citric acid pre-treatment affected the drying curves by reducing the drying time, while for blanch pre-treatment the dryrng time reduced not much. Foam mat drying does retained the color of samples and produced better flow ability powders than air fry drying because the powders produced by air fry drying was sticky. The drying curves of air fry drying was steeper and shorter than foam mat drying due to the high temperature used. Noted that the temperature for foam mat dryrng was 42 degrees C for 50% fan speed and 34 degrees C for 100% fan speed. The optimum condition for drying muskmelon was dried using foam mat drying 100% fan speed and pre-treated with blanch ffeatment 70 degrees C.

Item Type:	Project Paper
Subjects:	T Technology > TP Chemical technology
Faculty:	Faculty of Engineering
Depositing User:	Ms. AZLINA ZAINAL ABIDIN
Date Deposited:	03 Nov 2025 05:50
Last Modified:	26 Nov 2025 08:03
URI:	http://psaspb.upm.edu.my/id/eprint/2582

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