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Recovery of hesperidin and narirutin from waste Citrus unshiu peel using subcritical water extraction aided by pulsed electric field treatment

Food Science and Biotechnology 2021년 30권 2호 p.217 ~ 226
황희정, 김희주, 고민정, 정명수,
소속 상세정보
황희정 ( Hwang Hee-Jeong ) - Dongguk University Department of Food Science and Biotechnology
김희주 ( Kim Hui-Ju ) - Ewha Womans University Department of Food Science and Engineering
고민정 ( Ko Min-Jung ) - Hankyong National University Department of Food Science and Biotechnology
정명수 ( Chung Myong-Soo ) - Ewha Womans University Department of Food Science and Engineering

Abstract


The objective of this study was to identify whether the efficacy of extracting hesperidin and narirutin from Citrus unshiu peel by-products can be increased by combining pulsed electric field (PEF) and subcritical water extraction (SWE). The samples were treated with a PEF at a strength of 3 kV/cm for 60 and 120 s. Subsequent SWE was conducted at extraction temperatures of 110?190 °C for 3?15 min. The concentration of hesperidin was highest at 46.96?±?3.37 mg/g peel (dry basis) after PEF treatment at 120 s, combined with SWE at 150 °C for 15 min, while that of narirutin peaked at 8.76?±?0.83 mg/g after PEF treatment at 120 s, integrated with SWE at 190 °C for 5 min. The concentrations of both hesperidin and narirutin increased with PEF treatment time. The PEF increased the amounts of hesperidin and narirutin extracted by 22.1% and 33.6%, respectively. This study demonstrate the potential of PEF pretreatment for enhancing the SWE of flavonoids from C. unshiu peel.

키워드

Citrus unshiu peel; Pulsed electric field (PEF); Subcritical water extraction (SWE); Hesperidin; Narirutin

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