Optimization of ultrasound-microwave assisted acid extraction of pectin from potato pulp by response surface methodology and its characterization

•Potato pectin was obtained using ultrasound-microwave assisted HCl extraction.•The optimal extraction parameters were obtained by response surface methodology.•The maximum pectin yield reached to 22.86 ± 1.29% under the optimal conditions.•The branched RG-I domain (>60 mol%) was predominant in t...

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