Anthocyanin Extraction from Jaboticaba Skin ( Myrciaria cauliflora Berg.) Using Conventional and Non-Conventional Methods

• Published in: Foods Vol. 11; no. 6; p. 885
• Main Authors: Nunes Mattos, Gabriela, Pessanha de Araújo Santiago, Manuela Cristina, Sampaio Doria Chaves, Ana Carolina, Rosenthal, Amauri, Valeriano Tonon, Renata, Correa Cabral, Lourdes Maria
• Format: Journal Article
• Language: English
• Published: Switzerland MDPI AG 20.03.2022; MDPI
• Subjects: Anthocyanins; Antioxidants; bioactive compounds; by-product; Environmental impact; Enzymes; Ethanol; Food science; high hydrostatic pressure-assisted extraction; Independent variables; jaboticaba skin; Myrciaria cauliflora; Seeds; Skin; Ultrasonic imaging; Ultrasonic testing; Ultrasound; ultrasound-assisted extraction; Brazil; United States > US; Rio de Janeiro Brazil; by-product; bioactive compounds; jaboticaba skin; ultrasound-assisted extraction; anthocyanins; high hydrostatic pressure-assisted extraction
• ISSN: 2304-8158; 2304-8158
• DOI: 10.3390/foods11060885

This study evaluated the effect of different extraction technologies and conditions in order to obtain jaboticaba skin extracts. Firstly, the skins were extracted by conventional extraction, according to a rotatable central composite design, varying ethanol concentration, solid:liquid ratio, and temperature. Next, ultrasound-assisted extraction was performed using different power densities and times. Finally, high-pressure extractions were performed with varying pressures and times. For agitated bed extraction, the highest anthocyanin content was observed for ethanol concentrations varying between 60% and 80%. Thus, the independent variables which more influenced anthocyanin content were ethanol concentration and solid:liquid ratio. Folin-Ciocalteu reducing capacity was linearly affected by the increase in temperature. Ethanol concentration was the variable that most influenced ABTS+. On the other hand, the increase in ethanol concentration decreased the antioxidant capacity by ABTS+. Considering the ultrasound extraction, increasing its power did not affect total monomeric anthocyanins content, while the increase in process time had better yields. The highest antioxidant capacity and total monomeric anthocyanins were found for the highest extraction time. Similarly, with ultrasound, the increase in high hydrostatic-assisted extraction time positively influenced anthocyanin content and antioxidant capacity. As a result, the ultrasound-assisted method was found to be the best extraction technology for anthocyanins recovery.