Utilization of chemometric methods in comprehensive two-dimensional gas chromatography for evaluate cocoa, its derivatives and carob

• Grant number: 12/14695-8
• Support Opportunities: Scholarships in Brazil - Doctorate
• Start date: October 01, 2012
• End date: November 30, 2016
• Field of knowledge: Physical Sciences and Mathematics - Chemistry - Analytical Chemistry
• Principal Investigator: Ronei Jesus Poppi
• Grantee: Luciana Fontes de Oliveira
• Host Institution: Instituto de Química (IQ). Universidade Estadual de Campinas (UNICAMP). Campinas , SP, Brazil
• Associated scholarship(s): 14/24724-0 - Chemometric methods applied in comprehensive two-dimensional gas chromatography of chocolates, BE.EP.DR

Abstract

This project aims to explore and expand the possibilities of chemometrics applied to the comprehensive two-dimensional gas chromatography with solid phase microextraction and detection by mass spectrometry for studies related to quality of cocoa, cupuaçu and derivatives. Exploratory studies will be conducted using chemometric tools for multidimensional pattern recognition for evaluation of the types of cocoa and recognition of potential markers of quality. Also, it is intended to use multidimensional multivariate calibration methods for studies of correlations between results obtained by Quantitative Descriptive Analysis and GCxGC-qMS. Finally, exploratory studies will be conducted using chemometric tools for multidimensional pattern recognition for the quality assessment of cupuaçu. It is hoped that the results of this thesis provide support to increase the knowledge about the volatiles in cocoa, cupuaçu and derivatives and their relationship to type and quality of the sample.

Scientific publications

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

OLIVEIRA, LUCIANA F.; BRAGA, SORAIA C. G. N.; FILGUEIRAS, PAULO R.; AUGUSTO, FABIO; POPPI, RONEI J.. Assessment of robustness on analysis using headspace solid-phase microextraction and comprehensive two-dimensional gas chromatography through experimental designs. Talanta, v. 129, p. 303-308, NOV 1 2014. (12/14695-8)

OLIVEIRA, LUCIANA F.; BRAGA, SORAIA C. G. N.; AUGUSTO, FABIO; HASHIMOTO, JULIANA C.; EFRAIM, PRISCILLA; POPPI, RONEI J.. Differentiation of cocoa nibs from distinct origins using comprehensive two-dimensional gas chromatography and multivariate analysis. Food Research International, v. 90, p. 133-138, DEC 2016. (12/14695-8)

FONTES DE OLIVEIRA, LUCIANA; GONZAGA NEVES BRAGA, SORAIA CRISTINA; AUGUSTO, FABIO; POPPI, RONEI JESUS. Correlating Comprehensive Two-dimensional Gas Chromatography Volatile Profiles of Chocolate with Sensory Analysis. BRAZILIAN JOURNAL OF ANALYTICAL CHEMISTRY, v. 8, n. 32, p. 131-140, JUL-SEP 2021. (12/14695-8, 14/50867-3)

Academic Publications

(References retrieved automatically from State of São Paulo Research Institutions)

OLIVEIRA, Luciana Fontes de. Utilization of chemometrics methods in comprehensive two dimensional gas chromatography for evaluate cocoa, its derivatives and carob. 2016. Doctoral Thesis - Universidade Estadual de Campinas (UNICAMP). Instituto de Química Campinas, SP.