Effect of solvents and extraction methods on total anthocyanins, phenolic compounds and antioxidant capacity of Renealmia alpinia (Rottb.) Maas peel

Javier David Vega Arroy, Hector Ruiz-Espinosa, Juan Jose Luna-Guevara, Maria L. Luna-Guevara, Paola Hernández-Carranza, Raúl Ávila-Sosa and Carlos Enrique Ochoa-Velasco
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Javier David Vega Arroy: Faculty of Chemical Engineering and
Hector Ruiz-Espinosa: Faculty of Chemical Engineering and
Juan Jose Luna-Guevara: Faculty of Chemical Engineering and
Maria L. Luna-Guevara: Faculty of Chemical Engineering and
Paola Hernández-Carranza: Faculty of Chemical Sciences, Benemérita Universidad Autónoma de Puebla, Puebla, Mexico
Raúl Ávila-Sosa: Faculty of Chemical Sciences, Benemérita Universidad Autónoma de Puebla, Puebla, Mexico
Carlos Enrique Ochoa-Velasco: Faculty of Chemical Sciences, Benemérita Universidad Autónoma de Puebla, Puebla, Mexico

Czech Journal of Food Sciences, 2017, vol. 35, issue 5, 456-465

Abstract: The effect of different solvents and extraction methods on total anthoc yanins, phenolic compounds, and antioxidant capacity from x´kijit (renealmia alpinia Rottb. Maas) peels was evaluated. In order to evaluate the effect of solvents on the bioactive compounds extraction efficienc y and antioxidant capacity, a special cubic mixture design model was implemented with ethanol, methanol, and acetone as solvents and conventional (agitation - 1 and 6 h; Soxhlet - 2 and 4 h), novel (power ultrasound - 2.5 and 5 min) methods, and combination of extraction methods. Acceptable correla - tions between predicted and experimental data were obtained for total anthoc yanins ( r2 = 0.95), phenolic compounds (r2 = 0.78), and antioxidant capacity (r2 = 0.97), with methanol exhibiting the highest extraction yield of bioactive compounds and resultant antioxidant capacity. Although the extraction of total anthocyanins (82.2-85.8 mg cyanidine/ kg) and phenolic compounds (183.6-207.0 mg GAE/kg) was best carried out through Soxhlet, the ultrasonic treat- ment showed similar antioxidant capacity values (27.4-34.3 mg Trolox/kg) to those of 2-h Soxhlet. Moreover, a 5-min ultrasound pretreatment significantly increased (p < 0.05) phenolic compounds by 11, 21 and 12% when combined with agitation 1, 6, and 2-h Soxhlet treatments, respectively ; while the antioxidant capacity increased by 26, 48, and 22% for the same treatments. Ultrasound might be used as a valuable, green alternative procedure for improving the solvent extraction of bioactive compounds.

Keywords: ultrasound; extraction process; x´kijit peel; bioactive compounds; antioxidants (search for similar items in EconPapers)
Date: 2017
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Persistent link: https://EconPapers.repec.org/RePEc:caa:jnlcjf:v:35:y:2017:i:5:id:316-2016-cjfs

DOI: 10.17221/316/2016-CJFS

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