Determination of antioxidant activity of gum Arabic: An exudation from two different locations

Mohamed E.S. Mirghani, Ahmed A.M. Elnour, N. A. Kabbashi, M. Z. Alam, Khalid Hamid Musa, Aminah Abdullah

Research output: Contribution to journalArticle

Abstract

Gum Arabic (GA) is the main product of acacia trees. As a raw and commercial samples, GA was extracted with methanol and analysed to measure the antioxidant activity using five methods: 2,2-diphenyl-1-picrylhydrazyl (DPPH), Folin-Ciocalteu indexes (FCI), which indicate total phenolic compounds (TPC), oxygen radical absorbance capacity (ORAC), ferric reducing antioxidant power (FRAP), and cupric reducing antioxidant capacity (CUPRAC). This study used antioxidant assays to detect TPC and selected appropriate and inexpensive methods to determine the antioxidant capacity of GA samples. The results reveal that the FCI, ORAC, and CUPRAC are correlated highly with FRAP. Person’s correlation coefficient (r) values are 0.98, 0.93, and 0.99, respectively, based on the sample size of (n = 8). This means that the TPC of GA is highly correlated with their antioxidant activities that are measured by these three methods. Hence the FCI, ORAC, and the CUPRAC methods are more effective and simpler. They had similar predictive power to the FRAP of GA antioxidant activity. Consequently, GA is generally recognized as being slightly acidic which May have been obtained from appropriate methods of the antioxidant capacity detection. This acidity is due to the electronic transfer mechanism based on the selection of the working pH.

Original languageEnglish
Pages (from-to)179-186
Number of pages8
JournalScienceAsia
Volume44
Issue number3
DOIs
Publication statusPublished - 1 Jun 2018

Fingerprint

Gum Arabic
Antioxidants
Reactive Oxygen Species
Acidity
Methanol
Assays

Keywords

  • Antioxidants
  • CUPRAC
  • DPPH
  • Extraction
  • FRAP
  • ORAC
  • TPC

ASJC Scopus subject areas

  • General

Cite this

Mirghani, M. E. S., Elnour, A. A. M., Kabbashi, N. A., Alam, M. Z., Musa, K. H., & Abdullah, A. (2018). Determination of antioxidant activity of gum Arabic: An exudation from two different locations. ScienceAsia, 44(3), 179-186. https://doi.org/10.2306/scienceasia1513-1874.2018.44.179

Determination of antioxidant activity of gum Arabic : An exudation from two different locations. / Mirghani, Mohamed E.S.; Elnour, Ahmed A.M.; Kabbashi, N. A.; Alam, M. Z.; Musa, Khalid Hamid; Abdullah, Aminah.

In: ScienceAsia, Vol. 44, No. 3, 01.06.2018, p. 179-186.

Research output: Contribution to journalArticle

Mirghani, MES, Elnour, AAM, Kabbashi, NA, Alam, MZ, Musa, KH & Abdullah, A 2018, 'Determination of antioxidant activity of gum Arabic: An exudation from two different locations', ScienceAsia, vol. 44, no. 3, pp. 179-186. https://doi.org/10.2306/scienceasia1513-1874.2018.44.179
Mirghani, Mohamed E.S. ; Elnour, Ahmed A.M. ; Kabbashi, N. A. ; Alam, M. Z. ; Musa, Khalid Hamid ; Abdullah, Aminah. / Determination of antioxidant activity of gum Arabic : An exudation from two different locations. In: ScienceAsia. 2018 ; Vol. 44, No. 3. pp. 179-186.
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