aerides maculosum
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Author(s):  
Riaz Mahmood ◽  
Sameera Parveen ◽  
Ramesh Ck ◽  
Pallavi M

Objective: Orchids are widely used the economically important ornamental plant. Conventionally, they were also used for the treatment of several diseases. In the present study, five species of medicinal Orchids from South India were selected to evaluate their antioxidant potential.Methods: The selected species were extracted by Soxhlet method using 70% ethanol. The extracts obtained were analyzed for various quantitative and antioxidant assays followed by correlation analysis in between quantitative and antioxidant activity.Results: Antioxidant data revealed that among the extracts of five orchids, Coelogyne breviscapa was proved to be superior in terms of antioxidant activities, followed by Aerides maculosum, Dendrobium macrostachyum, Pholidota pallida, and Vanda testacea. Correlation analysis was performed, and the results proved simple positive correlation and highest average value of “r” (correlation coefficient) for antioxidant activities with quantitative were the total antioxidants, total phenolics, total flavonoids, and ascorbic acid content. Among the qualitative antioxidant activities, the highest average value of “r” was shown by 2, 2-diphenyl-1-picrylhydrazyl, iron chelating, 2,2-azinobis-3-ethyl-benzothiazoline-6-sulfonic acid, and superoxide radical.Conclusion: The study documents that orchid plants have significant antioxidant potential which can contribute to human health.


2008 ◽  
Vol 17 (1) ◽  
pp. 107-109 ◽  
Author(s):  
G. V. Parab ◽  
S. Krishnan ◽  
M. K. Janarthanam ◽  
K. R. Sivaprakash ◽  
Ajay Parida

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