Application of the exploratory analysis of data in the geographical discrimination of okra from Rio Grande do Norte and Pernambuco

Abstract

Samples of okra from Caruaru and Vitória of Santo Antão, in the State of Pernambuco, and Ceará-Mirim, Macaíba and Extremoz in the State of Rio Grande do Norte have been analysed. Two different methods were applied in the data treatment allowing to geographically discriminate samples from different origins: Principal Component Analysis - PCA and Hierarquical Cluster Analysis - HCA.

exploratory analysis; chemometrics; PCA; HCA; okra