Extraction of bioactive carbohydrates from artichoke (Cynara scolymus L.) external bracts using microwave assisted extraction and pressurized liquid extraction

卷:196

Ruiz-Aceituno, Laura ; Jesus Garcia-Sarrio, M. ; Alonso-Rodriguez, Belen ; Ramos, Lourdes ; Luz Sanz, M.

CSIC

关键词: Inositols;    Inulin;    PLE;    MAE;    Artichoke external bracts;   

DOI  :  10.1016/j.foodchem.2015.10.046

学科分类：食品科学和技术

【 摘 要 】

Microwave assisted extraction (MAE) and pressurized liquid extraction (PLE) methods using water as solvent have been optimized by means of a Box-Behnken and 3(2) composite experimental designs, respectively, for the effective extraction of bioactive carbohydrates (inositols and inulin) from artichoke (Cynara scolymus L.) external bracts. MAE at 60 degrees C for 3 min of 0.3 g of sample allowed the extraction of slightly higher concentrations of inositol than PLE at 75 degrees C for 26.7 min (11.6 mg/g dry sample vs. 7.6 mg/g dry sample). On the contrary, under these conditions, higher concentrations of inulin were extracted with the latter technique (185.4 mg/g vs. 96.4 mg/g dry sample), considering two successive extraction cycles for both techniques. Both methodologies can be considered appropriate for the simultaneous extraction of these bioactive carbohydrates from this particular industrial by-product. To the best of our knowledge this is the first time that these techniques are applied for this purpose. (C) 2015 Elsevier Ltd. All rights reserved.