Vol 4 No 2 (2018): Current Issue
Research Article

Phytochemical Properties and Antimicrobial Activity of Natural Colorant Extracted from Mesocarp and Exocarp of Cocos nucifera

Rodiah MH
Department of Science and Biotechnology, Faculty of Engineering and Life Sciences, Universiti Selangor (UNISEL) Bestari Jaya Campus, Malaysia
Nur AFZ
Department of Science and Biotechnology, Faculty of Engineering and Life Sciences, Universiti Selangor (UNISEL) Bestari Jaya Campus, Malaysia
Aziah MY
Department of Science and Biotechnology, Faculty of Engineering and Life Sciences, Universiti Selangor (UNISEL) Bestari Jaya Campus, Malaysia
Nurhafizah I
Department of Science and Biotechnology, Faculty of Engineering and Life Sciences, Universiti Selangor (UNISEL) Bestari Jaya Campus, Malaysia
Norakma MN
Department of Science and Biotechnology, Faculty of Engineering and Life Sciences, Universiti Selangor (UNISEL) Bestari Jaya Campus, Malaysia
Published October 23, 2018
Keywords
  • Coconut palm,
  • Natural dye,
  • Microwave-assisted extraction

Abstract

Phytochemical analysis was carried out on the natural colorant extracted using the microwave-assisted extraction which performed at a microwave power of 300 watts for 2 minutes. The pigment compound was extracted from mesocarp and mesocarp of Cocos nucifera by using 0.1 M NaOH as extracting agent. The qualitative analysis that was carried out for these natural colorants confirmed that flavonoids, terpenoids, cardiac glycosides and phenol/tannins were present in both plant parts (mesocarp and exocarp) tested whereas alkaloids, saponins, steroids and anthraquinone were not detected. Quantitative analysis showed that tannin content was significantly (p < 0.05) higher (134.82 mg TAE/g) in the mesocarp extract compared to the exocarp extract (33.90 mg TAE/g). The amount of flavonoids was low in both extracts (mesocarp: 15.48 mg QE/g and exocarp: 28.45 mg QE/g, respectively). The antimicrobial study discovered that the mesocarp and the exocarp extract were not effective as antibacterial agents.