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- 详细信息
- 文献和实验
- 技术资料
- 保质期:
两年
- 英文名:
Agar
- 库存:
99
- 供应商:
江蓝纯
- CAS号:
9002-18-0
属性
| 敏感性 | 湿度敏感 |
| 密度 | 0.8770 |
| 存贮条件 | 旋紧瓶盖,贮存于避光、阴凉干燥处。Keep container tightly closed,stose in a cool,dry place,away from bright light. |
描述
| 产品介绍 | 在沸水中极易分散成溶胶,在冷水中不溶,但能吸不膨胀成胶块状,溶胶液呈中性反应。食用时不被酶分解,所以几乎没有营养价值。琼脂易分散于热水,即使0.5%的低浓度也能形成坚实的凝胶。1%的琼脂溶胶在42℃固化,其凝胶即使在94℃也不融化,有很强的弹性。琼脂溶胶的凝固温度较高,一般在35℃即可变成凝胶。琼脂的吸水性和持水性高,干燥琼脂在冷水中浸泡时,徐徐吸水膨润软化,可以吸收20多倍的水。琼脂凝胶的耐热性较强。琼脂的耐酸性比明胶与淀粉强,但不如果胶 |
| 别名 | 琼脂 ;琼脂粉,琼胶,洋菜;Agar-Agar Gelose 2X YT Agar Agar Gum agar |
| 应用 | 琼指可用作食品增稠剂、蚕丝上浆剂、缓泻剂,以及药品的胶粘剂、增稠剂和胶囊,还可作为细菌培养基、固定化酶载体、细菌的包理材料和电泳的介质。还可用于病毒,亚细胞粒子和大分子的过滤分离,以及血清抗原或抗体的观察。ADI(每日允许摄入量)不需要特殊规定。 |
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