Full text available in english in Adobe Acrobat format:https://www.food.actapol.net/volume18/issue1/4_1_2019.pdf
original articleIssue 18 (1) 2019 pp. 35-41
Alvaro A. Arrieta1, Pedro L. Arrieta1, Jorge M. Mendoza2
1Universidad de Sucre, Sincelejo, Colombia
2Universidad de Córdoba, Montería, Colombia
2Universidad de Córdoba, Montería, Colombia
Analysis of coffee adulterated with roasted corn and roasted soybean using voltammetric electronic tongue
Abstract
Background. Coffee samples adulterated with roasted corn and roasted soybean were analyzed using a voltammetric electronic tongue equipped with a polypyrrole sensor array.
Materials and methods. Coffee samples were adulterated in concentrations of 2%, 5%, 10% and 20% of roasted corn and roasted soybean; 5 replicates of each were used. The discrimination capacity of a voltammetric electronic tongue elaborated with a polypyrrole sensor array, was evaluated by principal component analysis and cluster analysis, while the capacity to perform quantitative determinations was carried out by partial least squares.
Results. The results obtained by the application of principal component analysis showed an excellent ability to discriminate adulterated samples. Additionally, the classifications obtained by cluster analysis was concordant with those obtained by principal component analysis. On the other hand, the evaluation of the ability to quantitatively analyze the adulterated samples showed that the polypyrrole sensor array provides sufficient information to allow quantitative determinations by partial least squares regression.
Conclusion. It could be concluded that the voltammetric electronic tongue used in this work allows the suf- ficient analysis of coffee samples adulterated with roasted corn and roasted soybean.
Keywords: electronic tongue, voltammetry, polypyrrole, coffee, adulteration
Full text available in english in Adobe Acrobat format:https://www.food.actapol.net/volume18/issue1/4_1_2019.pdf
https://doi.org/10.17306/J.AFS.2019.0619
For citation:
| MLA | Arrieta, Alvaro A., et al. "Analysis of coffee adulterated with roasted corn and roasted soybean using voltammetric electronic tongue." Acta Sci.Pol. Technol. Aliment. 18.1 (2019): 35-41. https://doi.org/10.17306/J.AFS.2019.0619 |
| APA | Arrieta A. A., Arrieta P. L., Mendoza J. M. (2019). Analysis of coffee adulterated with roasted corn and roasted soybean using voltammetric electronic tongue. Acta Sci.Pol. Technol. Aliment. 18 (1), 35-41 https://doi.org/10.17306/J.AFS.2019.0619 |
| ISO 690 | ARRIETA, Alvaro A., ARRIETA, Pedro L., MENDOZA, Jorge M.. Analysis of coffee adulterated with roasted corn and roasted soybean using voltammetric electronic tongue. Acta Sci.Pol. Technol. Aliment., 2019, 18.1: 35-41. https://doi.org/10.17306/J.AFS.2019.0619 |