Effect of Drying Methods on Total Phenolic Content and Antioxidant Activity of Moringa oleifera Leaf Extract
Pengaruh Metode Pengeringan terhadap Kandungan Fenolik Total dan Aktivitas Antioksidan Ekstrak Daun Kelor (Moringa oleifera)
Abstract
Moringa oleifera leaves are rich in phenolic compounds, but drying can degrade heat-sensitive antioxidants. This study compared four drying methods (sun drying, shade drying, oven drying at 50 °C and freeze drying) on the total phenolic content (TPC) and antioxidant activity of ethanolic leaf extracts. TPC was measured with the Folin–Ciocalteu method and antioxidant activity with the DPPH assay. Freeze-dried leaves gave the highest TPC (48.6 mg GAE/g extract) and the lowest IC50 (42.1 µg/mL), followed by shade drying. Sun drying produced the lowest values. Shade drying is recommended as a low-cost method for small producers that keeps most of the antioxidant activity.
Keywords
- Moringa oleifera
- drying method
- phenolic
- DPPH
- antioxidant
References
Anwar, F., Latif, S., Ashraf, M., & Gilani, A. H. (2007). Moringa oleifera: A food plant with multiple medicinal uses. Phytotherapy Research, 21(1), 17–25.
Brand-Williams, W., Cuvelier, M. E., & Berset, C. (1995). Use of a free radical method to evaluate antioxidant activity. LWT – Food Science and Technology, 28(1), 25–30.
Leone, A., Spada, A., Battezzati, A., Schiraldi, A., Aristil, J., & Bertoli, S. (2015). Cultivation, genetic, ethnopharmacology, phytochemistry and pharmacology of Moringa oleifera leaves: An overview. International Journal of Molecular Sciences, 16(6), 12791–12835.
Singleton, V. L., & Rossi, J. A. (1965). Colorimetry of total phenolics with phosphomolybdic-phosphotungstic acid reagents. American Journal of Enology and Viticulture, 16(3), 144–158.
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