Near-infrared reflectance spectroscopy as a rapid and non-destructive analysis tool for curcuminoids in turmeric.
Phytochem Anal
; 25(5): 445-52, 2014.
Article
em En
| MEDLINE
| ID: mdl-24692181
ABSTRACT
INTRODUCTION:
Turmeric has been widely used in curry powders as the main spice. Conventional chemical analysis such as high-performance liquid chromatography (HPLC) may take several hours to extract curcuminoids and prepare samples in many turmeric processing industries.OBJECTIVE:
This study was conducted to evaluate curcuminoids in turmeric powder using near-infrared reflectance spectroscopy (NIRS).METHODS:
All spectral acquisition ranged from 1100 to 2500 nm and a chemometrics analysis using partial least-squares (PLS) regression was performed to quantify the contents of individual curcuminoids. The HPLC was carried out (n = 129) to develop a PLS model based on the reference values.RESULTS:
High correlation coefficient (R(2) > 0.93) and low standard error of cross-validation (SECV < 0.20 g/100 g) and standard error of prediction (SEP < 0.13 g/100 g) values were obtained for precision and accuracy. In addition, the ratio of prediction to deviation (RPD > 2.65) values was also calculated.CONCLUSION:
Our results indicate that NIRS could be utilised as a control procedure or as an alternative rapid and effective quantification method.Palavras-chave
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Espectrofotometria Infravermelho
/
Curcumina
/
Curcuma
Tipo de estudo:
Prognostic_studies
Idioma:
En
Revista:
Phytochem Anal
Assunto da revista:
BOTANICA
/
QUIMICA
Ano de publicação:
2014
Tipo de documento:
Article