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Total Phenolic Content, Total Flavonoid Content, Antioxidant and Antimicrobial Activities of Malaysian Shorea |
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Norhazana Norizan,
Norizan Ahmat,
Sharifah Aminah Syed Mohamad,
Nur Ainaa Atikah Mohd Nazri,
Siti Saidatul Akmar Ramli,
Sariza Natrah Mohd Kasim and Wan Zuraida Wan Mohd Zain |
Abstract:
Five Shorea species which are endemic plants of Malaysia were used in
this study. The methanol extract of Shorea acuminata, Shorea macroptera,
Shorea leprosula, Shorea bracteolata and Shorea resinosa were
investigated for total phenolic contents (TPC), total flavonoid contents, radical
scavenging properties (DPPH), in vitro antioxidant and antimicrobial
activities. For the antimicrobial activity, the extracts were tested against
four bacteria; Gram negative bacteria Escherichia coli, Gram positive
bacteria Staphylococcus pyogenes, Staphylococcus aureus and Bacillus
subtilis and two fungi, Candida albicans and Aspergillus niger.
The result of TPC analysis showed that S. acuminata displayed highest
total phenolic content, 2731±0.09 mg/100 g, while in total flavonoid
content, S. resinosa displayed the highest amount of flavonoid, 956.73±0.01
mg/100 g. However, in DPPH analysis, the samples of S. resinosa, S.
macroptera and S. acuminate displayed better scavenging activity
as compared to butylatedhydroxytoluene (BHT). The in vitro antioxidant
activity indicated that S. macroptera showed the highest percent inhibition
both in ferric thiocyanate method (FTC) (98.68%) and thiobarbituric acid method
(TBA) analysis. In antimicrobial activity, S. resinosa displayed moderate
inhibition against Gram negative bacteria Escherichia coli, Gram positive
bacteria Streptococcus pyogenes, Staphylococcus aureus and Bacillus
subtilis. Other plants were found to display selective inhibition against
microbes.
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How to cite this article:
Norhazana Norizan, Norizan Ahmat, Sharifah Aminah Syed Mohamad, Nur Ainaa Atikah Mohd Nazri, Siti Saidatul Akmar Ramli, Sariza Natrah Mohd Kasim and Wan Zuraida Wan Mohd Zain, 2012. Total Phenolic Content, Total Flavonoid Content, Antioxidant and Antimicrobial Activities of Malaysian Shorea. Research Journal of Medicinal Plants, 6: 489-499.
DOI: 10.3923/rjmp.2012.489.499
URL: https://scialert.net/abstract/?doi=rjmp.2012.489.499
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