The Development Of Aerated Dodol Product Using Foam Mat Drying Technology

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Date
2020-07
Authors
Mohamad Anuar, Mohamad Aiman
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Publisher
Universiti Sains Malaysia
Abstract
Foam mat drying is a relatively old method to preserve food materials by means of dehydration. Compared to other drying methods such as freeze drying and spray drying, foam mat drying stands as a more economical alternative to yield food powders. Liquid food materials will be transformed into a stable foam by incorporating air bubbles through shaking, whipping, or bubbling with the aid of foaming agents and foaming stabiliser. Past literature has emphasised on the drying of puree and extracts from fruits and vegetables using foam mat drying, therefore the study reviews the feasibility of using dodol in foam mat drying. Dodol is a sweet and sticky dessert made from glutinous rice flour, coconut milk and sugar. In this study, egg albumen was selected as foaming agent with carboxymethyl cellulose was used as foam stabiliser. Egg whites are suitable as foaming agent according to most studies and carboxymethyl cellulose aids to stabilise. The dodol sample was cooked using Thermomix TM5 for 3 hours. Attempts to produce aerated dodol were made using 5% w/w egg white and 0.5% w/w carboxymethyl cellulose, and a whipping time of 4,8 and 12 min. Aerated dodol samples were analysed for foaming properties including measurements of foam density, foam expansion and foam stability. The sample of aerated dodol was found to be stable because the amount of water drained at the bottom of the measuring cylinder was very minimal.
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Keywords
Dodol , Foam Mat Drying
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