Effect of drying temperatures and extraction solvents on total phenolic, flavonoid contents and antioxidant properties of immature Manis Terengganu Melon (Cucumis melo)
2018
Norlia Muhamad | Sahadan W. | Ho, Lee Hoon
The aim of this study was to determine the effects of drying temperature (40, 50 and 60 °C) on the total phenolic content (TPC), total flavonoid content (TFC) and antioxidant activity on immature Manis Terengganu Melon. The extraction was performed using different solvent (water, methanol and ethanol). The TPC, TFC and antioxidant activity were determined by using Folin-Ciocalteu method, Aluminium Chloride method, (2,2-diphenyl-1-picrylhydrazyl (DPPH) assay and Free Reducing Antioxidant Power (FRAP assay), respectively. Drying temperature at 40°C showed the highest value of TPC extract. However, drying temperature at 50 and 60 °C showed the higher DPPH and FRAP values, respectively. Comparison between extraction solvents, methanol is the most efficient solvent to produce the highest value of TFC. Meanwhile, the used of water extract resulted in higher TPC and FRAP value compared to ethanol and methanol. The present obtained result may be used in food industries for developing of functional food ingredient.
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