Wang, Eu Sheng
- Department of Plant Protection Biology, Swedish University of Agricultural Sciences
Abstract
BACKGROUND Rapeseed is the second most cultivated oilseed globally after soybean and a protein-rich press cake is generated after liberation of the oil. However, its use in food applications is limited by high levels of anti-nutrients such as glucosinolates and phytic acid. Although differences between botanical varieties are known, controlled comparisons of modern spring varieties for protein functionality and antinutrient reduction are scarce. RESULTS Protein was extracted from five spring rape varieties by the pH shift method, yielding 29-37% recovery. The variety Edda exhibited the best emulsifying capacity, stabilizing emulsion droplets of 44 mu m (d43). Glucosinolate concentrations in the protein-rich precipitates were reduced by 89-94% compared to the press cakes, with Sigrid showing the lowest concentration (0.45 g kg(-1)). Phytic acid content decreased by 53-81% during the extraction, with Fergus having the lowest concentration (7.6 mu mol g(-1)). CONCLUSION The study demonstrates that emulsifying properties and anti-nutritional content differ significantly between spring rape varieties. Selecting suitable cultivars, such as Edda for emulsification or Fergus and Sigrid for reduced anti-nutrients, can improve rapeseed protein functionality for food applications. Future studies should include multiple harvest years to strengthen these findings.
Keywords
rapeseed; protein extraction; emulsions; glucosinolates; phytic acid
Published in
Journal of the Science of Food and Agriculture
2026
Publisher: WILEY
SLU Authors
UKÄ Subject classification
Agricultural Science
Food Science
Publication identifier
- DOI: https://doi.org/10.1002/jsfa.70547
Permanent link to this page (URI)
https://res.slu.se/id/publ/146485