The 7 g of the egg powder was wetted for 30 min with 2 g of ethyl alcohol, mixed with 7 g of 74m glass beads, and then packed in two 10mL stainless steel tubular extractors in parallel (ISCO, USA).
The 7 g of the egg powderwas wetted for 30 min with 2 g of ethyl alcohol, mixed with 7 gof 74m glass beads, and then packed in two 10mL stainlesssteel tubular extractors in parallel (ISCO, USA).