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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Extraction of bioactive compounds from defatted passion fruit bagasse (Passiflora edulis sp.) applying pressurized liquids assisted by ultrasound

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Vigano, Juliane [1, 2] ; de Paula Assis, Bruno Felipe [1] ; Nathia-Neves, Grazielle [1] ; dos Santos, Philipe [1] ; Meireles, M. Angela A. [1] ; Veggi, Priscilla Carvalho [2] ; Martinez, Julian [1]
Total Authors: 7
[1] Univ Estadual Campinas, Coll Food Engn, Dept Food Engn, R Monteiro Lobato 80, BR-13083862 Campinas, SP - Brazil
[2] Univ Fed Sao Paulo, Inst Environm Chem & Pharmaceut Sci, Dept Chem Engn, R Sao Nicolau 210, BR-09913030 Diadema, SP - Brazil
Total Affiliations: 2
Document type: Journal article
Web of Science Citations: 0

Passion fruit bagasse is a rich source of phenolic compounds, including piceatannol, a stilbene to which several biological activities are conferred. This work reports the application of pressurized liquid extraction (PLE) assisted by ultrasound (US) to intensify the extraction of phenolic compounds from defatted passion fruit bagasse (DPFB). PLE at different temperatures (65-75 degrees C) without and with different US powers (240-640 W) was performed to investigate the mechanism of the assisted process. The extracts were evaluated in terms of global, total phenolic (TP), piceatannol and total reducing sugar yields. The antioxidant capacity of the extracts was determined by FRAP and ORAC assays. PLE assisted by US increased the yields, resulting in 60% more TP and piceatannol. The observed yields suggest that the main mechanism driving PLE assisted by US from DPFB was the rise in temperature caused by the ultrasonic waves. Pearson coefficient revealed a strong correlation between antioxidant capacity and total phenolics and piceatannol yield. The three-line spline model was adequately fitted to the experimental curves, showing three extraction periods in which the recovery of TP and piceatannol was higher than 70% at the end of the falling extraction rate period. PLE assisted or not by US showed to be clean, efficient and green alternatives for the recovery of phenolic compounds. The findings of this work indicate that PLE assisted by US has a great potential to improve the extraction of bioactive compounds from natural products. (AU)

FAPESP's process: 16/02007-0 - Supercritical technology applied to obtain aerogel particles as carriers of passion fruit bagasse extract rich in phenolic compounds
Grantee:Juliane Viganó
Support type: Scholarships in Brazil - Post-Doctorate
FAPESP's process: 17/23670-2 - Biorefinery for the recovery of by-products from passion fruit processing through high pressure technologies
Grantee:Julian Martínez
Support type: Regular Research Grants