Physicochemical properties of microwave heated sago (Metroxylon sagu) starch

Mohd Alhafiizh, Zailani and Hanisah Kamilah, Abd Razak and Ahmad, Husaini and Shahrul Razid, Sarbini (2021) Physicochemical properties of microwave heated sago (Metroxylon sagu) starch. CyTA - Journal of Food, 1 (19). pp. 596-605. ISSN 1947-6345

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Abstract

Sago starch is an underutilized starch due to its low functionality in food formulation. Modification is effective in improving starch functional properties. In this study, the starch were modified to enhance its functional properties. The starch was microwave-heated with different treatment durations of 5, 10, 15, or 20 min, separately, yielding microwave-heated starches (MHT1, MHT2,MHT3, and MHT4). The modified starches have irregular shaped granules and fissures while maintaining their mean diameters. The degree of double helix had increased, indicating more double helix structure of amylose formed. The modified starches’ moisture content, solubility, and paste clarity were significantly decreased. The MHT4 had its swelling power and syneresis increase. In conclusion, the treatment duration influenced the physicochemical properties of the sago starch, which is related to the formation of amylose double helix structure. Further study should focus on the formation of double helix structure in starch and its impact towards food structure.

Item Type: Article
Uncontrolled Keywords: amylose; FTIR; irradiation; oil binding; water binding; microwave, UNIMAS, University, Borneo, Malaysia, Sarawak, Kuching, Samarahan, IPTA, education, Universiti Malaysia Sarawak
Subjects: Q Science > QD Chemistry
S Agriculture > S Agriculture (General)
Divisions: Academic Faculties, Institutes and Centres > Centre for Pre-University Studies
Depositing User: Awang Husaini
Date Deposited: 30 Jun 2021 08:51
Last Modified: 30 Jun 2021 08:51
URI: http://ir.unimas.my/id/eprint/35528

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