Manufacturing protein foam extinguishing agent using distiller's grains
BI Bo;The Chinese People′s Armed Police Forces Academy;
Alkali-alcohol extraction method was used to extract protein from distiller's grains.The four variables that influence extraction efficiency were the ratio of alkali and alcohol,the ratio of extraction solvent and distiller's grains,temperature and time determined by the one-factor-at-a-time method.Response surface analysis was used to optimize the extraction conditions among the four variables at three levels on extraction efficiency. The optimum ratio of alkali and alcohol was 2.22∶1,the ratio of extraction solvent and distiller's grains was 31.91∶1,temperature was 33.86 ℃ and time was 75.4 min.Under these conditions,the extraction efficiency of protein was 10.182 7%. The properties of protein foam extinguishing agent made from hydrolyzed protein reached the national standard of the People's Republic of China(GB 15308-2006,Foam extinguishing agent).