发酵乳中ACE抑制剂的超滤分离

Separation of ACE inhibitors by UF from fermented milk

为了获得ACE抑制活性更高、更稳定的降血压产品,采用超滤方法对瑞士乳杆菌(L.helveticus)发酵乳进行分离浓缩,得到了超滤分离工艺的最适条件:发酵乳在4℃条件下经400目滤布袋过滤获得乳清。将此乳清直接用于超滤,不用调整pH值,不用预先经过微孔滤膜过滤;超滤过程采用截留分子量为10ku的超滤膜,在室温、1.38×105Pa压力条件下直接进行超滤。结果表明,此产品具有比发酵乳更强的ACE抑制活性。

To promote the ACE- inhibitory activity, ultrafiltration was applied in this paper to concentrate antihypertensive product from milk fermented by L.helveticus. The product had cut off molecular weight near to 10000 by ultrafiltrating under 1.38× 105 Pa pressure at about 20 ℃ .