Multi response optimisation of polyphenol extraction conditions from grape seeds by using ultrasound assisted extraction (UAE) |
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| Authors: | N Vural Ö Algan Cavuldak R E Anl? |
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| Affiliation: | 1. Faculty of Engineering, Chemical Engineering Department, Ankara University, Ankara, Turkey;2. Faculty of Engineering, Food Engineering Department, Bülent Ecevit University, Zonguldak, Turkey;3. Faculty of Engineering, Food Engineering Department, Ankara University, Ankara, Turkey |
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| Abstract: | Multi response optimisation conditions were investigated in grape seeds’ phenolic compounds extraction by using ultrasound-assisted extraction (UAE) methodology. The effect of independent process variables such as EtOH concentration (0–100%), extraction time (0–40 min), solvent:solid ratio (4.5–38.5 mL/g) and extraction temperature (20–60°C) on total phenolic content (TPC) and total antioxidant activity (TAA) of the extracts were studied. The optimum conditions of UAE were determined as follows: EtOH concentration, 61.76%; extraction time 20 min., solvent:solid ratio, 30 mL/g; extraction temperature 50°C. The estimation results of the model and the experimental results for TPC and TAA showed a great similarity. |
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| Keywords: | Grape seed ultrasound-assisted extraction (UAE) response surface methodology (RSM) multi response optimisation antioxidant activity |
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