Updated publication reference for DOI(s): 10.1016/j.algal.2019.101416. Efficacies for protein extraction from C. vulgaris was compared using classical microwave extraction and a self-developed spark discharge. Besides proteins, modifications occuring at proteins were investigated to assess, which method provided a more gentle way of extraction. To observe protein extraction, proteins were purified from the supernatent and from the pellet, both directy processed after treatmemt ('dp') or after 2 h incubation on ice(2h).