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Research Article Open access CC BY 4.0

Phytochemical Testing Methodologies and Principles for Preliminary Screening/ Qualitative Testing

Luvedika Maheshwaran, Ladhurshika Nadarajah, S. P. N. N. Senadeera, C. B. Ranaweera, A. K. Chandana, R. N. Pathirana

Asian Plant Research Journal · pp. 11–38 · Published 19 Aug 2024

10.9734/aprj/2024/v12i5267

Abstract

Plants are basically biosynthetic factories that contain various pathways that produce phytochemicals with the help of different parts of the cell while specialized cells or tissues hoard and use them as needed. Human population has used this to their advantage for centuries. Aims: This review article aims to provide a comprehensive guide to qualitative phytochemical tests, focusing on their principles, procedures, and interpretation of results. Scope of Review:  This review covers qualitative tests for major phytochemical groups, including alkaloids, flavonoids, tannins, saponins, and phenols. Methodology: Various qualitative tests are compiled and described, detailing the chemical principles underpinning each test and the expected outcomes for the identification of phytochemicals. Summary of Findings: Qualitative phytochemical tests are highlighted for their simplicity, cost-effectiveness, and accessibility, making them valuable tools, particularly in resource-limited settings. These tests provide baseline information on phytochemical profiles and serve as initial screening tools that can lead to more detailed studies. Conclusion: While advanced analytical techniques exist, qualitative methods remain essential for initial phytochemical screening due to their practical advantages. This review emphasizes the importance of these classical techniques in both research and practical applications.

Phytochemicals phytochemical screening alkaloids flavonoids tannins saponins phenols

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