Comparative study of drying methods on chemical constituents of Malaysian red seaweed

Yan, Ying Neoh and Patricia @ Patricia Clementina Matanjun, and Lee, Jau Shya (2016) Comparative study of drying methods on chemical constituents of Malaysian red seaweed. Drying Technology, 34 (14). pp. 1745-1751. ISSN 0737-3937


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This study determined the proximate composition, phytochemical and antioxidant activity of the edible red seaweed, Kappaphycus alvarezii, under different drying conditions, namely, oven dried, sun dried, vacuum dried, and freeze dried. The proximate composition of K. alvarezii has shown no significant difference (p > 0.05) in macronutrient components except fat content. Phytochemical studies conducted on total phenolic content and total flavonoid content showed that vacuum-dried extracts demonstrated the highest total phenolic content at 12.97 mg PGE g−1 DE. In vitro antioxidant activities of seaweed extract by ferric-reducing antioxidant potential and 2,2-diphenyl-1-picrylhydrazyl radical scavenging activity proved that oven-dried extracts showed the highest ferric-reducing antioxidant power value, 272.95 µM TE mg−1, and highest scavenging activity, EC50 9.55 mg mL−1. In general, sun-dried extracts showed lowest antioxidant among all treatments.

Item Type: Article
Uncontrolled Keywords: Antioxidant; drying; Kappaphycus alvarezii; phytochemical; seaweed
Subjects: T Technology > TP Chemical technology
Divisions: FACULTY > Faculty of Food Science and Nutrition
Depositing User: Unnamed user with email
Date Deposited: 15 Nov 2016 06:34
Last Modified: 23 Oct 2017 07:41

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