Phytochemical differences between white- and yellow-flowering rapeseed (Brassica napus L.) grown as sprouts and seedlings for human consumption
2018
Grownbaek, M. | Tybirk, E. | Kristensen, H. L.
The aim of this study was to elucidate whether a difference in phytochemical content among white- and yellow-flowering rapeseed cultivars was present. Seven different cultivars were grown as either sprouts or seedlings in climate chamber and analyses of total glucosinolate and carotenoid content were made on seeds, sprouts and seedlings. Results showed significant differences in GLS content among cultivars and a tendency of increasing GLS content when comparing contents of seeds and sprouts or seedlings. Furthermore, the ratio of total indole/total aliphatic GLSs reached notably high levels in the seedlings. Total GLS content did not relate to flower color. However, total carotenoid content was higher in yellow-flowering than in white-flowering cultivars when comparing either annual or biannual cultivars grown as seedlings. Therefore flower color could be related to total carotenoid content. In conclusion white- and yellow-flowering rapeseed cultivars are suitable for human consumption when grown as sprouts and seedlings but depending on the phytochemical of interest, flower color and developmental stage should be taken into account.
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