Plant Vegetative Stages and Drying Methods Affect Flavonoid Content of Clinacanthus nutans Extracts

Munirah Mohamad, and Ahmad, S.H, and Ghazali, H.M, and Mahmud T.M.M, and Ketaren B.R, and Shukor, N.I.A, and Tajidin, N.E, (2018) Plant Vegetative Stages and Drying Methods Affect Flavonoid Content of Clinacanthus nutans Extracts. Munirah et al, Afr J Tradit Complement Altern Med, 15 (4). pp. 54-63.

[img] Text
Plant Vegetative Stages and Drying Methods Affect Flavonoid Content of Clinacanthus nutans Extracts.pdf

Download (41kB)

Abstract

Background: Clinacanthus nutans, also known as ‘Sabah snake grass’ or ‘Belalai gajah’, is a herb well known locally for its medicinal values. The primary chemical constituents of the leaves are schaftoside, vitexin, isovitexin, orientin and isoorientin, and antiviral activity is shown by two glycoglycerolipids. Despite the importance of C. nutans, complete information with respect to commercial production and postharvest handling of the herb in the local herbal industry is still lacking. Thus, the objective of this study was to determine the optimum postharvest handling processes that could retain the quality of phytochemicals of C. nutans. Materials and Methods: The flavonoid compounds of C. nutans were analysed by using ultra fast liquid chromatography (UFLC). Total phenolic content and antioxidant activity were determined using a spectrophotometer. Results: The total phenolic compounds and antioxidant activity in C. nutans were found to be higher in the young vegetative stage than in the mature vegetative stage. Flavonoid compounds (schaftoside, isovitexin, vitexin and orientin) were also found to be highest in the young vegetative plant compared to the mature vegetative plant. All of the assayed phytochemicals and flavonoid compounds levels were found to be highest in oven dried samples compared to the sun, air and solar dried samples. Conslusion: This study suggests that oven-drying young vegetative C. nutans plant material is the optimum method to retain postharvest quality.

Item Type: Article
Uncontrolled Keywords: Flavonoid, Sabah snake grass, schaftoside, vitexin, drying.
Subjects: S Agriculture > S Agriculture (General)
S Agriculture > SB Plant culture
Divisions: FACULTY > Faculty of Sustainable Agriculture
Depositing User: MDM SITI AZIZAH IDRIS
Date Deposited: 05 Nov 2019 00:41
Last Modified: 05 Nov 2019 00:41
URI: http://eprints.ums.edu.my/id/eprint/23980

Actions (login required)

View Item View Item