Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 334084
Title Photoacoustic approach in direct determination of the total phenolic content in Red Sorghum Flours
Author(s) Doka, O.; Bicanic, D.D.; Dicko, M.H.; Slingerland, M.A.
Source Journal of Agricultural and Food Chemistry 52 (2004)8. - ISSN 0021-8561 - p. 2133 - 2136.
Department(s) Biophysics
Food Chemistry
Crop and Weed Ecology
Publication type Refereed Article in a scientific journal
Publication year 2004
Abstract Photoacoustic (PA) spectroscopy in the ultraviolet and visible was demonstrated to be a suitable tool for direct determination of total phenolic content in red sorghum flours. The PA spectra obtained feature two characteristic peaks: the first centered at 285 nm is due to the aromatic amino acids, while the second one at 335 nm is associated with the total phenolic content. The outcome of the PA study was compared with the results obtained by a conventional, tedious Folin-Ciocalteau chemical method. Statistical analysis indicates no significant difference between the two methods used in this study.
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