Qualitative Phytochemical Screening of Cladophora glomerata Macroalgae Extract Obtained Using Microwave-Assisted Extraction (MAE)
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This study aimed to qualitatively identify classes of secondary metabolites in Cladophora glomerata extract obtained via microwave-assisted extraction (MAE) using distilled water as the solvent for 5 minutes. We used a 3 × 3 factorial design with three replicates, resulting in nine treatment combinations. Treatments included solid-to-solvent ratios of 1:30, 1:40, and 1:50 g/mL and microwave power levels of 300, 450, and 600 watts. We conducted qualitative phytochemical screening for six classes of secondary metabolites: phenolics, tannins, flavonoids, alkaloids, saponins, and triterpenoids. The results showed that phenolics, tannins, and saponins were qualitatively detected in all extracts across all treatment combinations. Conversely, flavonoids, alkaloids, and triterpenoids were not detected in any tested extraction combination. These findings provide preliminary qualitative evidence of phenolics, tannins, and saponins in Cladophora glomerata extract obtained via MAE using distilled water.
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