"In this study, colorimetric indices and bioactive molecule content in nine pigmented rice samples were assessed. Colour parameters L*,a*, b* were detected by a Konica Minolta Colorimeter, while bioactive molecules such as total pigments, anthocyanin and phenolic compounds were determined by spectrophotometric methods. The main carotenoids i.e. lutein, zeaxanthin and β-carotene were detected by RP-chromatography. . A comprehensive characterization of rice samples was achieved and the relationship between colour parameters and the carotenoid content assessed. The obtained results can be used to evaluate the nutritional properties of rice varieties under investigation.. "
Titolo: | Risi pigmentati: componenti bioattive e colore | |
Autori: | ||
Data di pubblicazione: | 2013 | |
Abstract: | "In this study, colorimetric indices and bioactive molecule content in nine pigmented rice samples were assessed. Colour parameters L*,a*, b* were detected by a Konica Minolta Colorimeter, while bioactive molecules such as total pigments, anthocyanin and phenolic compounds were determined by spectrophotometric methods. The main carotenoids i.e. lutein, zeaxanthin and β-carotene were detected by RP-chromatography. . A comprehensive characterization of rice samples was achieved and the relationship between colour parameters and the carotenoid content assessed. The obtained results can be used to evaluate the nutritional properties of rice varieties under investigation.. " "In questo lavoro sono stati studiati nove campioni di riso pigmentato appartenenti a varietà diverse, italiane e straniere. Su ciascun campione sono stati determinati gli indici di colore L*,a*, b*, il contenuto in pigmenti totali, in fenoli e in antocianine. Inoltre, è stata determinata la composizione quali-quantitativa in carotenoidi mediante cromatografia in fase inversa. I risultati hanno consentito di individuare relazioni tra gli indici di colore ed il contenuto in antiossidanti e quindi di valutare le proprietà nutrizionali delle varietà di riso oggetto di studio." | |
Handle: | http://hdl.handle.net/11695/45925 | |
ISBN: | 978-88-906680-1-2 | |
Appare nelle tipologie: | 4.1 Contributo in Atti di convegno |