Antioxidant phenolic compounds recovery from Mangifera Indica L. by-products by supercritical antisolvent extraction

Supercritical Antisolvent Extraction (SAE) was used in the recovery of antioxidant compounds from mango by-products. The antioxidant extract was obtained by solid-liquid extraction using aqueous acetone (80% v/v) and subsequent adsorption/desorption in C18 cartridge. Recovery of antioxidants was performed by SAE using SC-CO2 as antisolvent. The temperature and pressure parameters were varied in the range 35-45�C and 8-15 MPa. The SAE process allowed the recovery of about 90% of the initial phenolic compounds, the best recovery was obtained at 40�C and 10 MPa and the main compounds were mangiferin, isomangiferin, quercetin 3-O-galactoside, quercetin 3-O-glucoside, quercetin 3-O-xyloside, quercetin 3-O-arabinoside, quercetin and kaempferol. The product obtained was a dry powder, spherical nanoparticles with a particle diameter of 143 � 40 nm with an antioxidant activity of 851.9 ?Mol TE/g and a half inhibition concentration of DPPH radical of 90 ?g/mL. The analyses performed indicated that SAE processing of natural extracts is effective for improving the activity of natural antioxidant compounds by producing nanoparticles.

• Hlavní autor: Scognamiglio, M. (author)
• Další autoři: Caputo, G. (author), Adami, R. (author), Reverchon, E., . (author), Meneses Chamba, M. (author)
• Médium: article
• Vydáno: 2015
• Témata: supercritical antisolvent extraction; mango by; products; mangiferin; nanoparticles; polyphenols; antioxidants
• On-line přístup: http://dx.doi.org/10.1016/j.jfoodeng.2015.04.025; http://dspace.utpl.edu.ec/handle/123456789/19041