TY - JOUR
T1 - Innovative approach for obtaining phenolic compounds from guava (Psidium guajava L.) coproduct using ionic liquid ultrasound-assisted extraction (IL-UAE)
AU - Ferreira, Bruno Luís
AU - Junior, Tufy Kabbas
AU - Block, Jane Mara
AU - Granato, Daniel
AU - Nunes, Itaciara Larroza
N1 - Publisher Copyright:
© 2021 Elsevier Ltd
PY - 2021/11
Y1 - 2021/11
N2 - An innovative ionic liquid ultrasound-assisted extraction (IL-UAE) approach using 1-Butyl-3-methylimidazolium tetrafluoroborate [BMIM][BF4] and 1-Butyl-3-methylimidazolium chloride [BMIM][Cl] for obtaining extracts rich in phenolic compounds (PC) from guava coproduct was investigated. A screening design 24, followed by a central composite design 22 with response surface methodology and desirability function were used to optimize the extraction condition of PC with antioxidant activity (AA). The results showed that 20 g L-1 of sample, during 25 min of ultrasound-assisted extraction at 45 °C, using 2.5 mol L-1 of [BMIM][BF4] was the optimal condition for the extraction of the PC from guava coproduct (1.18 eq. mg g-1 gallic ac.). The IL-UAE extracts showed a higher recovery for condensed tannins and ortho-diphenols and high AA by DPPH (2,2-Diphenyl-1-picrylhydrazyl), FRAP (ferric reducing antioxidant power), ABTS (2,2-azinobis-(3-ethylbenzothiazoline-6-sulfonate)) and Cu2+ chelating methods compared to volatile organic solvents (VOS). IL-UAE represents an innovative, fast and straightforward approach for obtaining high-value PC with antioxidant activity from guava coproduct.
AB - An innovative ionic liquid ultrasound-assisted extraction (IL-UAE) approach using 1-Butyl-3-methylimidazolium tetrafluoroborate [BMIM][BF4] and 1-Butyl-3-methylimidazolium chloride [BMIM][Cl] for obtaining extracts rich in phenolic compounds (PC) from guava coproduct was investigated. A screening design 24, followed by a central composite design 22 with response surface methodology and desirability function were used to optimize the extraction condition of PC with antioxidant activity (AA). The results showed that 20 g L-1 of sample, during 25 min of ultrasound-assisted extraction at 45 °C, using 2.5 mol L-1 of [BMIM][BF4] was the optimal condition for the extraction of the PC from guava coproduct (1.18 eq. mg g-1 gallic ac.). The IL-UAE extracts showed a higher recovery for condensed tannins and ortho-diphenols and high AA by DPPH (2,2-Diphenyl-1-picrylhydrazyl), FRAP (ferric reducing antioxidant power), ABTS (2,2-azinobis-(3-ethylbenzothiazoline-6-sulfonate)) and Cu2+ chelating methods compared to volatile organic solvents (VOS). IL-UAE represents an innovative, fast and straightforward approach for obtaining high-value PC with antioxidant activity from guava coproduct.
KW - 1-Butyl-3-methylimidazolium chloride
KW - 1-Butyl-3-methylimidazolium tetrafluoroborate
KW - Agroindustrial coproducts
KW - Antioxidant activity
KW - Polyphenolic compounds
KW - Room temperature molten salts
UR - http://www.scopus.com/inward/record.url?scp=85118530701&partnerID=8YFLogxK
U2 - 10.1016/j.bcab.2021.102196
DO - 10.1016/j.bcab.2021.102196
M3 - Article
AN - SCOPUS:85118530701
SN - 1878-8181
VL - 38
JO - Biocatalysis and Agricultural Biotechnology
JF - Biocatalysis and Agricultural Biotechnology
M1 - 102196
ER -