Naslov
Rapid quantification of dissolved solids and bioactives in dried root vegetable extracts using near infrared spectroscopy

Autori
Jurinjak Tušek, Ana ; Benković, Maja ; Malešić, Elena ; Marić, Lucija ; Jurina, Tamara ; Gajdoš Kljusurić, Jasenka ; Valinger, Davor

Izvornik
Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy (1386-1425) 261 (2021); 120074, 9

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
ANN ; NIR spectra ; PCA ; root vegetable extracts ; drying

Sažetak
Artificial neural networks (ANN) were developed for prediction of total dissolved solids, polyphenol content and antioxidant capacity of root vegetables (celery, fennel, carrot, yellow carrot, purple carrot and parsley) extracts prepared from the (i) fresh vegetables, (ii) vegetables dried conventionally at 50 °C and 70 °C, and (iii) the lyophilised vegetables. Two types of solvents were used: organic solvents (acetone mixtures and methanol mixtures) and water. Near-infrared (NIR) spectra were recorded for all samples. Principal Component Analysis (PCA) of the pre-treated spectra using Savitzky-Golay smoothing showed specific grouping of samples in two clusters (1st: extracts prepared using methanol mixtures and water as the solvents ; 2nd: extracts prepared using acetone mixtures as the solvents) for all four types of extracts. Furthermore, obtained results showed that the developed ANN models can reliably be used for prediction of total dissolved solids, polyphenol content and antioxidant capacity of dried root vegetable extracts in relation to the recorded NIR spectra.

Izvorni jezik
Engleski

Znanstvena područja
Biotehnologija, Prehrambena tehnologija

POVEZANOST RADA