PH9451 | 猪胆盐 ≥65% Bile salt from pig CAS号：8008-63-7

猪胆盐在生物实验中最核心的作用是作为选择性抑制剂，用于配制选择性培养基。其作用机制在于能够抑制革兰氏阳性细菌的生长，而允许或促进目标革兰氏阴性菌（如大肠杆菌、沙门氏菌等肠道菌）的生长。基于此原理，猪胆盐被广泛用于肠道菌的选择性分离与鉴定实验中，例如在乳糖胆盐培养基中用于检测化妆品或食品中的粪大肠菌群。此外，猪胆盐也常被添加到培养基中，用于模拟动物肠道环境，以评估益生菌（如乳酸菌、芽孢杆菌）的耐胆盐能力，这是衡量其能否在肠道中存活并发挥功效的重要指标。

英文名称：Bile salt from pig

CAS号：8008-63-7

级别：BR

胆酸含量：≥65%

酸值：≤145mgKOH/g

性状(以下信息仅供参考)：浅黄色或棕黄色粉末。味苦。一种选择性抑菌剂。易吸湿

用途：本品仅供科研，不得用于其它用途。(以下用途仅供参考)配制选择性细菌培养基。

保存：常温运输与保存，有效期3年。

The primary role of porcine bile salts in biological experiments is as a selective inhibitor for preparing selective media. Their mechanism lies in inhibiting the growth of Gram-positive bacteria while allowing or promoting the growth of target Gram-negative bacteria (such as intestinal species like Escherichia coli and Salmonella). Based on this principle, porcine bile salts are widely used in experiments for the selective isolation and identification of intestinal bacteria—for example, in lactose bile salt media to detect fecal coliforms in cosmetics or food products. Additionally, porcine bile salts are commonly added to culture media to simulate the animal intestinal environment, enabling assessment of probiotics' (such as lactic acid bacteria and Bacillus spp.) bile salt tolerance—a crucial indicator of their ability to survive in the gut and exert beneficial effects.