followed by the same process with cold 80% (v/v) acetone. Half a gram of the dried pellet was then mixed with 5 ml of cold aqueous 24% (w/v) TCA, vortex mixed and left to precipitate on ice for 30 min, followed by centrifugation at 13,000 rpm for 15 min at 4 °C. The pellet was washed with 2 ml of ice cold acetone, incubated for 15 min on ice and then centrifuged at 13,000 rpm for 15 min at 4 °C. The final pellet or date seed protein concentrate (DSPC) was air-dried in an oven at 30 °C overnight (16 h) and stored at −20 °C, until required for further analysis.