[Quantitative determination of soluble solid content in bayberry juice using near-infrared spectroscopy technique].
Guang Pu Xue Yu Guang Pu Fen Xi
; 27(7): 1332-5, 2007 Jul.
Article
em Zh
| MEDLINE
| ID: mdl-17944407
ABSTRACT
Near-infrared transmittance spectra of bayberry juice of different varieties in Zhejiang province were obtained and a quantitative analysis was carried out. Leverage value, studentized residue and sample's Mahalanobis distance were applied to detect the outlier sample, and different wave number ranges and resolutions were chosen for partial least squares (PLS) regression to abstract spectral information effectively. The best factor, resolution and optimum wave number range were determined. Analysis results show that one sample was an outlier and deleted, and the best model gave the relative high correlation coefficient of 0.957 85, RMSEC, RMSEP and RMSECV of 0.431, 0.925 and 1.07 degrees Brix, respectively, when the best wave number range was 4 000-12 267.46 cm(-1), and the best factor and resolution were 8 and 4 cm(-1), respectively. The results indicate that it is feasible to use NIR spectroscopy technique for quantitative analysis of bayberry juice soluble solid content.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Bebidas
/
Análise dos Mínimos Quadrados
/
Espectroscopia de Luz Próxima ao Infravermelho
/
Myrica
Tipo de estudo:
Diagnostic_studies
/
Prognostic_studies
Idioma:
Zh
Revista:
Guang Pu Xue Yu Guang Pu Fen Xi
Ano de publicação:
2007
Tipo de documento:
Article