Kinetic improvement of olive leaves' bioactive compounds extraction by using power ultrasound in a wide temperature range

被引：75
作者：
Khemakhem, Ibtihel [1 ,4 ]
Ahmad-Qasem, Margarita Hussam [2 ]
Barrajon Catalan, Enrique [3 ]
Micol, Vicente [3 ]
Vicente Garcia-Perez, Jose [2 ]
Ayadi, Mohamed Ali [1 ]
Bouaziz, Mohamed [4 ]
机构：
[1] Univ Sfax, Lab Anal Valorisat & Securites Alimentaires, Ecole Natl Ingn Sfax, BP 1173, Sfax 3038, Tunisia
[2] Univ Politecn Valencia, Grp Anal & Simulac Proc Agroalimentarios ASPA, Dept Tecnol Alimentos, E-46022 Valencia, Spain
[3] Univ Miguel Hernandez, Inst Biol Mol & Celular, Elche 03202, Spain
[4] Univ Sfax, Lab Electrochim & Environm, Ecole Natl Ingn Sfax, BP 1173, Sfax 3038, Tunisia
来源：
ULTRASONICS SONOCHEMISTRY | 2017年 / 34卷
关键词：
Olive leaves; Oleuropein; Ultrasound extraction; Antioxidant capacity; Total phenolic content; RESPONSE-SURFACE METHODOLOGY; ASSISTED EXTRACTION; LIQUID EXTRACTION; NATURAL-PRODUCTS; OLEUROPEIN; OPTIMIZATION; BIOPHENOLS; TREE; L;
D O I：
10.1016/j.ultsonch.2016.06.010
中图分类号：
O42 [声学];
学科分类号：
070206 ; 082403 ;
摘要：
In this study, the effect of temperature and ultrasonic application on extraction kinetics of polyphenols from dried olive leaf was investigated. Conventional (CVE) and ultrasonic-assisted extraction (UAE) were performed at 10, 20, 30, 50 and 70 degrees C using water as solvent. Extracts were characterized by measuring the total phenolic content, the antioxidant capacity and the oleuropein content (HPLC-DAD/MS-MS). Moreover, Naik's model was used to mathematically describe the extraction kinetics. The experimental results showed that phenolic extraction was faster in UAE (ultrasonic-assisted extraction) than in CVE (conventional extraction), being extraction kinetics satisfactorily described using Naik model (include VAR > 98%). Besides, the total phenolic content, the antioxidant capacity and the oleuropein content were significantly (p < 0.05) improved by increasing the temperature in both CVE and UAE. Oleuropein content reached 6.57 +/- 0.18 being extracted approximately 88% in the first minute for UAE experiments. (C) 2016 Elsevier B.V. All rights reserved.
引用
收藏
页码：466 / 473
页数：8
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