Non-Destructive Genotyping of Cultivars and Strains of Sesame Through NIR Spectroscopy and Chemometrics

Overview

Journal Biosensors (Basel)

Specialty Biotechnology

Date 2022 Feb 24

PMID 35200330

Authors

Francisco Dos Santos Panero

Oscar Smiderle

Joao S Panero

Fernando S D V Faria

Pedro Dos S Panero

Anselmo F R Rodriguez

Affiliations

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Abstract

The differentiation of cultivars is carried out by means of morphological descriptors, in addition to molecular markers. In this work, near-infrared spectroscopy (NIR) and chemometric techniques were used to develop classification models for two different commercial sesame cultivars () and 3 different strains. The diffuse reflectance spectra were recorded in the region of 700 to 2500 nm. Based on the application of chemometric techniques: principal component analysis-PCA, hierarchical cluster analysis-HCA, k-nearest neighbor-KNN and the flexible independent modeling of class analogy-SIMCA, from the infrared spectra in the near region, it was possible to perform the genotyping of two sesame cultivars (BRS Seda and BRS Anahí), and to classify these cultivars with 3 different sesame strains, obtaining 100% accurate results. Due to the good results obtained with the implemented models, the potential of the methods for a possible realization of forensic, fast and non-destructive authentication, in intact sesame seeds was evident.

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