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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Comparison Among MIR, NIR, and LF-NMR Techniques for Quality Control of Jam Using Chemometrics

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Santos, Poliana M. [1] ; Colnago, Luiz Alberto [2]
Total Authors: 2
[1] Univ Tecnol Fed Parana, Dept Acad Quim & Biol, Rua Deputado Heitor de Alencar 5000, BR-81280340 Curitiba, Parana - Brazil
[2] Embrapa Instrumentacao, Rua 15 Novembro 1452, BR-13560970 Sao Carlos, SP - Brazil
Total Affiliations: 2
Document type: Journal article
Source: FOOD ANALYTICAL METHODS; v. 11, n. 7, SI, p. 2029-2034, JUL 2018.
Web of Science Citations: 2

The potential of mid-infrared (MIR), near-infrared (NIR), and low-field nuclear magnetic resonance (LF-NMR) techniques combined with chemometrics for reliable and rapid determination of soluble solids content (SSC) and moisture in jams was investigated. Forty-four different jam samples with SSC ranging from 17.49 to 73.91 (A degrees Brix) and moisture ranging from 20.44 to 81.03% were used in this study. Principal component analysis (PCA) showed that the three spectroscopic techniques were able to distinguish the jams based on the SSC and moisture content. Partial least squares (PLS) regression exhibited a good correlation between the reference values and the MIR, NIR, and LF-NMR predicted ones, with low errors of prediction and high coefficients of determination. An F test at 95% confidence level did not indicate significant differences between the accuracy of the PLS models obtained using MIR and NIR spectroscopic techniques. However, significant differences were observed comparing MIR with LF-NMR and NIR and LF-NMR. The residual prediction deviation (RPD) up to 2.5 indicated that all models are good. (AU)

FAPESP's process: 17/12864-0 - Effect of NMR magnetic field in chemical reactions monitored NMR in situ
Grantee:Luiz Alberto Colnago
Support type: Regular Research Grants
FAPESP's process: 13/22970-1 - Using spectroscopy and chemometrics to monitor jelly/jam production process
Grantee:Poliana Macedo dos Santos
Support type: Scholarships in Brazil - Post-Doctorate
FAPESP's process: 14/22126-9 - Development of time domain NMR spectrometers and methods for chemical analyses in field
Grantee:Luiz Alberto Colnago
Support type: Regular Research Grants