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Jayakumar, D.
- Evaluation of Antioxidant Potential and Antibacterial Activity of Calotropis gigantea and Vinca rosea Using In Vitro Model
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Authors
Affiliations
1 PG & Research Dept. of Chemistry, Auxilium College, Vellore-632 006, TN, IN
1 PG & Research Dept. of Chemistry, Auxilium College, Vellore-632 006, TN, IN
Source
Indian Journal of Science and Technology, Vol 3, No 7 (2010), Pagination: 720-723Abstract
The different parts of Calotropis gigantea and Vinca rosea belonging to the families of Asclepiadaceae and Apocynaceae were studied for their antioxidant and antimicrobial activities against selected bacterial strains. From the results it was evident that the flower of Vinca rosea showed the highest antioxidant activity of 97.44% at 800 µg which was higher than the standard L-ascorbic acid (94%) and Calotropis gigantea showed the least. Calotropis gigantea exhibited highest inhibition zone of 14, 14 and 11 mm against Escherichia coli, Salmonella typhi and Shigella sonnei when compared to Vinca rosea. Hence, the present study supports the view, that these medicinal plants might be useful as antioxidant and antimicrobial agents.Keywords
DPPH Assay, Antioxidant, Antimicrobial, Vinca rosea, Bacterial StrainsFull Text
References
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- Design of Combined Radix-2, Radix- 4 and Radix-8 based Single Path Delay Feedback (SDF) FFT
Abstract Views :146 |
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Authors
Affiliations
1 Department of ECE, St. Peter’s University Chennai - 600054 , Tamil Nadu, IN
2 Department of ECE, Sathyabama University, Chennai - 600119, Tamil Nadu, IN
1 Department of ECE, St. Peter’s University Chennai - 600054 , Tamil Nadu, IN
2 Department of ECE, Sathyabama University, Chennai - 600119, Tamil Nadu, IN
Source
Indian Journal of Science and Technology, Vol 9, No 45 (2016), Pagination:Abstract
Objectives: FFT algorithm is used for enhancing the performance of DFT.In the previous years, various types of FFT algorithms have been introduced. Particularly, the pipeline algorithms have been reputed as proper algorithms for processing high-speed data. Some pipeline FFT algorithms like split radix, radix-2 and the mixed radix have been developed. Methods: In the existing method of Radix-2 SDF FFT has more hardware utilization and also computational stages are increased. Findings: To conquer this problem, we developed a combined radix-2, 4 & 8 butterfly elements based Single path Delay Feedback (SDF) fast fourier transform method for reducing the computational stages in this paper. The developed method has the identical number of multipliers and the smaller number of stages and butterfly elements than the existing radix-2 FFT. Improvements: This architecture offers 62.47% reduction in LUTs, 58.78% reduction in slices, and 37.85% reduction in delay and 30.86% reduction in power consumption than the existing method.Keywords
Discrete Fourier Transform (DFT), Fast Fourier Transform (FFT), Look Up Tables (LUTs), Single path Delay Feedback (SDF).Full Text