Colour of rapeseed (Brassica napus) surface and contamination by fungi during storage of dry and wet seeds |
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| Authors: | Ma?gorzata Tańska Iwona Konopka Ewa Korzeniewska Daniela Rotkiewicz |
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| Affiliation: | 1. Department of Food Plant Chemistry and Processing, Faculty of Food Sciences, University of Warmia and Mazury, pl. Cieszyński 1, 10‐957 Olsztyn, Poland;2. Department of Environmental Microbiology, Faculty of Environmental Sciences and Fisheries, University of Warmia and Mazury, ul. Romana Prawocheńskiego 1, 10‐720, Olsztyn, Poland |
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| Abstract: | The aim of this study was to determine the effect of seed size and cultivation location on the diversity of colour of rapeseed surface and the level of fungi infection of sound, dry rapeseed and the correlation between colour attributes and fungal growth during storage of wet seeds. It has been reported that the colour, mouldiness degree and genera differentiation on the surface of sound seeds depend on both the seed size and the seed cultivation location. The storage of wet rapeseed led to a colour shift to a green‐yellowish hue with higher lightness and to about a 1000‐fold increase in colony‐forming units (CFUs) per seed mass. During the first 15 days, fungal growth was undetectable both by human eye inspection and by digital image analysis (DIA). The onset of fungal growth was associated with slight increase in G (of RGB) and a* and b* (of CIE L*a*b*) colour attributes. |
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| Keywords: | Colour of seed surface digital image analysis fungi rapeseed |
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