Effects of Span-20 and Tween-80 on Foam Fractionation Behavior of Nisin in Fermentation Broth
Span-20和Tween-80对发酵液中Nisin泡沫分离的影响

The effects of Tween-80 and Span-20 on foam fractionation of Nisin(a food additive) fermentation broth were studied by using a single foam column.The results indicated that bubble size distribution,foam height and average gas holdup of the foam layer of the mixed system containing Tween-80 and Span-20 changed obviously from Nisin fermentation broth.The bubble size order of different mixed systems was:fermentation broth containing 0.2 g/L Span-20>fermentation broth containing 0.5 g/L Span-20>fermentation bro...