PLS, iPLS, GA-PLS models for soluble solids content, pH and acidity determination in intact dovyalis fruit using near-infrared spectroscopy

Autor(es)

de Assis, Mateus W. D. ^[1] ; De Fusco, Deborah O. ^[2] ; Costa, Rosangela C. ^[3] ; de Lima, Kassio M. G. ^[3] ; Cunha Junior, Luis C. ^[4] ; de Almeida Teixeira, Gustavo H. ^[5]

Afiliação do(s) autor(es)

^[1] UNIFAFIBE, Ctr Univ, Bebedouro - Brazil

^[2] Univ Estadual Paulista UNESP, Fac Pharmaceut Sci FCF, Dept Food & Nutr, Araraquara - Brazil

^[3] Univ Fed Rio Grande do Norte UFRN, PPGQ, IQ, Dept Quim Biol Chem & Chemometr, Natal, RN - Brazil

^[4] Univ Fed Goias, EA, Goiania, Go - Brazil

^[5] Univ Estadual Paulista, FCAV, Dept Prod Vegetal, Jaboticabal - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Journal of the Science of Food and Agriculture; v. 98, n. 15, p. 5750-5755, DEC 2018.
• Citações Web of Science: 3

Resumo

BACKGROUND Dovyalis species Dovyalis abyssinica Warb. and Dovyalis hebecarpa Warb. were introduced into Brazil, but the fruit quality of these species is not appropriate for fresh consumption due to their high titratable acidity (TA) and low soluble solids content (SSC). With the selection of new D. abyssinica clones with lower acidity and the hybridization of these two dovyalis species (D. abyssinica and D. hebecarpa) the fruit quality improved and the better physical-chemical characteristics make them more suitable for fresh consumption. The objective of this study was to develop partial least squares (PLS) models using near infrared spectroscopy (NIRS) for the determination of SSC, TA and pH in intact dovyalis hybrid fruit (D. abyssinica Warb. x D. hebecarpa Warb.). RESULTS CONCLUSION The best SSC prediction model was developed with PLS regression (root mean square error of prediction (RMSEP) of 0.71 degrees Brix, prediction data set (R-P(2)) of 0.74 and residual predictive deviation (RPD) of 2.82). Although interval PLS was tested, genetic algorithm PLS performed better for TA (RMSEP of 4.8 g kg(-1), R-P(2) of 0.40, and RPD of 1.67), and for pH (RMSEP of 0.03, R-P(2) of 0.90, and RPD of 6.67). NIRS can be used as a non-destructive method to determine quality parameters in intact dovyalis hybrid fruit. (c) 2018 Society of Chemical Industry (AU)

• Processo FAPESP: 15/16685-8 - Biofortificação de frutos de goiabeira com zinco
• Beneficiário: Mateus Wagner Dantas de Assis
• Modalidade de apoio: Bolsas no Brasil - Iniciação Científica