Abstract
This chapter highlights the various nutritional aspects of white cabbage seeds. The seeds of Brassica sp. and the napins they contain constitute an important resource for animal nutrition and industrial oil production. White cabbage seeds produce a heterodimeric 11-kDa napin-like polypeptide with health-promoting activities. The polypeptide displays antibacterial activity against Pseudomonas aeruginosia, Bacillus subtilis, B. megaterium, and B. cereus. A heterodimeric 11-kDa napin-like polypeptide composed of a smaller (4-kDa) subunit and a larger (10-kDa) subunit was tested for trypsin-inhibitory activity, which has been reported for other napins, and for other activities, including translation inhibitory, antibacterial, antifungal, and ribonuclease activities, which are found in other seed proteins, such as antifungal proteins, lectins, ribosome-inactivating proteins, trypsin inhibitors, and ribonucleases. The 7-kDa subunit of the polypeptide closely resembles trypsin inhibitor in sequence. The polypeptide inhibits trypsin with a higher potency than its chymotrypsin inhibitory activity. Allergic response after consumption of cabbage is rare. Swelling of the face and throat has been reported in a woman after eating cabbage. Digestive discomfort may arise due to gas originating from cabbage.
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