Effects of different drying methods and storage time on free radical scavenging activity and total phenolic content of cosmos caudatus

Mediani, Ahmed and Abas, Faridah and Chin Ping, Tan and Khatib, Alfi (2014) Effects of different drying methods and storage time on free radical scavenging activity and total phenolic content of cosmos caudatus. Antioxidants, 3 (2). pp. 358-370. ISSN 2076-3921

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Abstract

The present study was conducted to determine the effect of air (AD), oven (OD) and freeze drying (FD) on the free radical scavenging activity and total phenolic content (TPC) of Cosmos caudatus and the effect of storage time by the comparison with a fresh sample (FS). Among the three drying methods that were used, AD resulted in the highest free radical scavenging activity against 1,1-diphenyl-2-picrylhydrazyl (DPPH) (IC50 = 0.0223 mg/mL) and total phenolic content (27.4 g GAE/100 g), whereas OD produced the lowest scavenging activity and TPC value. After three months of storage, the dried samples showed a high and consistent free radical scavenging activity when compared to stored fresh material. The drying methods could preserve the quality of C. caudatus during storage and the stability of its bioactive components can be maintained.

Item Type:	Article (Journal)
Additional Information:	6915/36604
Uncontrolled Keywords:	Cosmos caudatus; free radical scavenging activity; total phenolic content; drying; storage
Subjects:	Q Science > QD Chemistry
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Pharmacy > Department of Pharmaceutical Chemistry
Depositing User:	Dr. Alfi Khatib
Date Deposited:	14 May 2014 08:42
Last Modified:	20 Jun 2018 08:32
URI:	http://irep.iium.edu.my/id/eprint/36604

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