We previously reported that canola (Brassica napus L.) sprouts, on average, contained 27.3% oil, 25.1% protein, and 10.8% crude fiber on a dry weight basis (Bhardwaj and Hamama, 2007). Fresh yield of canola sprouts, from 20 g seed, averaged 111.1 g, whereas moisture content averaged 80.3%. Effects of cultivars on yield and moisture content of fresh canola sprouts were not significant. Locations, where seeds were grown, had significant effects on all traits of canola sprouts except for yield of fresh sprouts. Canola sprouts made from seed of Virginia cultivar had the highest protein content (26.2%), whereas those made from seeds of KS 8227 cultivar had the highest oil content (28.7%). We also reported that canola sprouts compared well with sprouts of alfalfa, brussels sprouts, mungbean, and radish for overall nutritional quality.
Although it is well established that sprouts from seeds of cruciferous plants (Brassica sp.) such as brussels sprouts, broccoli, and cauliflower are rich in essential nutrients (Chu and Jeffery, 2001; Fahey et al., 1997; Murillo and Mehta, 2001), no information is available about mineral composition of sprouts made from canola seeds. The term “canola” is a registered trademark of the Canola Council of Canada (http://www.canola-council.org/) and refers to cultivars of oilseed rapeseed (Brassica napus L. and B. rapa L.) that produce seed oils with less than 2% erucic acid and meals with less than 30 μmol of aliphatic glucosinolates per gram (Raymer, 2001). Current canola cultivars are essentially free of erucic acid and glucosinolates.
The objectives of this study were to ascertain effects of cultivars and growing locations on contents of aluminum (Al), boron (B), calcium (Ca), copper (Cu), iron (Fe), potassium (K), magnesium (Mg), manganese (Mn), sodium (Na), phosphorus (P), sulfur (S), and zinc (Zn) in canola sprouts. These elements were selected because the commercial laboratory offered to analyze canola sprouts for these nutrients as an economical package and because these nutrients were previously evaluated in similar studies [canola greens: Bhardwaj et al., 2003; Tepary bean (Phaseolus acutifolius A. Gray): Bhardwaj and Hamama, 2004; Lupin (Lupinus albus L.): Bhardwaj et al., 1998]. We also compared the contents of various nutrients in canola sprouts with those reported in the literature for sprouts of alfalfa, brussels sprouts, mungbean, and radish.
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Hamama, A.A., Bhardwaj, H.L. & Starner, D.E. 2003 Genotype and growing location effects on phytosterols in canola J. Amer. Oil Chem. Soc. 80 1121 1126
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