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Journal of Analytical Methods in ChemistryVolume 2014 2014, Article ID 296838, 5 pages

Research Article

Universidade Federal da Bahia, Instituto de Química, 40170-290 Salvador, BA, Brazil

Universidade Federal da Bahia, Faculdade de Farmácia, 40170-290 Salvador, BA, Brazil

Universidade Federal do Piauí, Núcleo de Pesquisa em Biodiversidade e Biotecnologia-Biotec, 64202-020 Parnaíba, PI, Brazil

Universidade Estadual de Campinas, Instituto de Química, 13084-971 Campinas, SP, Brazil

Received 5 June 2014; Revised 17 July 2014; Accepted 17 July 2014; Published 7 August 2014

Academic Editor: Mohamed Abdel-Rehim

Copyright © 2014 Lidércia C. R. Cerqueira e Silva et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Flavanones hesperidin, naringenin, naringin, and poncirin in industrial, hand-squeezed orange juices and from fresh-in-squeeze machines orange juices were determined by HPLC-DAD analysis using a previously described liquid-liquid extraction method. Method validation including the accuracy was performed by using recovery tests. Samples 36 collected from different Brazilian locations and brands were analyzed. Concentrations were determined using an external standard curve. The limits of detection LOD and the limits of quantification LOQ calculated were 0.0037, 1.87, 0.0147, and 0.0066 mg 100 g

and 0.0089, 7.84, 0.0302, and 0.0200 mg 100 g

for naringin, hesperidin, poncirin, and naringenin, respectively. The results demonstrated that hesperidin was present at the highest concentration levels, especially in the industrial orange juices. Its average content and concentration range were 69.85 and 18.80–139.00 mg 100 g

. The other flavanones showed the lowest concentration levels. The average contents and concentration ranges found were 0.019, 0.01–0.30, and 0.12 and 0.1–0.17, 0.13, and 0.01–0.36 mg 100 g

, respectively. The results were also evaluated using the principal component analysis PCA multivariate analysis technique which showed that poncirin, naringenin, and naringin were the principal elements that contributed to the variability in the sample concentrations.





Autor: Lidércia C. R. Cerqueira e Silva, Jorge M. David, Rafael dos S. Q. Borges, Sérgio L. C. Ferreira, Juceni P. David, Pedro S.

Fuente: https://www.hindawi.com/



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