The final portion is called the terminal ileum, and it absorbs vitamin B12 and bile salts which are recycled.

最后一部为末端回肠，可维生素B12和胆汁盐（进行胆盐循环）。

Usually though, bile salts bind up the calcium ions and keep them from binding with and precipitating unconjugated bilirubin.

通常情况下，胆盐会结合钙离，此阻止钙离非结合胆红素结合并沉淀。

Bile salts and acids are mostly a product of cholesterol metabolism, so an acid might look something like this and its salt is the anionic form, something like this (ROO-) group.

胆盐和胆汁酸是胆固醇代谢主要产物，所胆汁酸式如图，而胆盐是阴离形式，类似于这个（Roo-）基团。

There is some evidence it's not necessarily good for the gut microbiome because the bile salt in products from emulsifying saturated fat, because it requires more bile, that those might be toxic to some beneficial species of bacteria.

有证据表明，它对肠道微生物群不一定有益，因为乳化饱和脂肪产品中胆汁盐需要更多胆汁，而这些胆汁盐可能对某些有益细菌有毒性。