| Full text | |
| Author(s): |
Dall' Acqua, Yara Gurgel
[1]
;
Cunha Junior, Luis Carlos
[1]
;
Nardini, Viviani
[1]
;
Lopes, Valquira Garcia
[2]
;
Da Cruz Pessoa, Jose Dalton
[2]
;
De Almeida Teixeira, Gustavo Henrique
[3]
Total Authors: 6
|
| Affiliation: | [1] Univ Sao Paulo, FCFRP, Dept Anal Clin Toxicol & Bromatol, BR-14049 Ribeirao Preto, SP - Brazil
[2] Empresa Brasileira Pesquisa Agr EMBRAPA, Instrumentacao Agr, Sao Carlos, SP - Brazil
[3] Univ Estadual Paulista UNESP, Dept Prod Vegetal, Fac Ciencias Agr & Vet, BR-14884900 Jaboticabal, SP - Brazil
Total Affiliations: 3
|
| Document type: | Journal article |
| Source: | JOURNAL OF FOOD PROCESSING AND PRESERVATION; v. 39, n. 6, p. 2856-2865, DEC 2015. |
| Web of Science Citations: | 1 |
| Abstract | |
As the verification of authenticity of agricultural foods has become a potential application of spectroscopic methods, this study aimed to use near-infrared (NIR) spectroscopy associated with linear discriminant analysis (LDA) to discriminate intact fruit of the species Euterpe oleracea Mart. (acai) and Euterpe edulis Mart. (jucara). One hundred sixty-eight acai fruits from 17 genotypes and 200 fruits from 20 jucara genotypes were investigated and two groups were used for discriminating the species: calibration (294 fruits) and prediction (74 fruits). L-star, a(star), b(star)-PCA, and NIR-PCA of spectra pretreated with multiplicative scatter correction (MSC) showed the best results. The L-star, a(star), b(star)-LDA model resulted in 96.3% correct classification and 93.2% prediction accuracy of the external validation group. NIR spectra pretreated with MSC had 98% correct classification and 97.3% prediction accuracy. NIR spectroscopy associated with LDA is a reliable method for the discrimination of intact acai and jucara fruit. (AU) | |
| FAPESP's process: | 11/19669-2 - The use of near infrared spectroscopy for quality evaluation of whole açaizeiro and palmiteiro-juçara fruits: modeling and chemometrics |
| Grantee: | Luis Carlos Cunha Junior |
| Support Opportunities: | Scholarships in Brazil - Post-Doctoral |