期刊
RESOURCES-BASEL
卷 5, 期 1, 页码 -出版社
MDPI
DOI: 10.3390/resources5010007
关键词
extraction kinetics; flavonoids; glycerol; onion solid wastes; red grape pomace
Red grape pomace (RGP) and onion solid wastes (OSW) were used as raw material to produce flavonoid-enriched extracts, using ultrasound-assisted solid-liquid extraction. The extraction medium used was composed of water and glycerol and under the conditions used the extraction of flavonoids from both materials was shown to obey first-order kinetics. Maximum diffusivities (D-e) values were 4.01 x 10(-11) and 2.35 x 10(-11) m(2).s(-1), for RGP and OSW extraction, respectively, while the corresponding activation energies (E-a) were 14.00 and 15.23 kJ.mol(-1).
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