均质机操作独特的原理为无数工艺流程的革新以及各种新产品的开发应用提供了简便而卓有成效的途径,均质机的作用主要有:提高产品的均匀度和稳定性;增加保质期;减少反应时间从而节省大量催化剂或添加剂;改变产品的稠度改善产品的口味和色泽等等,其典型的应用领域如下:
1 食品饮料行业:豆乳、牛乳,花生乳,浓缩乳,奶油,混合乳酪,各种果肉型天然饮料,冰
淇淋,花粉液等中西保健营养液,食品添加剂,各种调味品等。
2 化妆品行业:洗涤剂,调理剂,润肤露,香水等。
3 化工行业:油漆涂料,各种乳化剂,燃油重油消毒剂,杀虫剂,感光乳剂,橡胶浆,树脂
胶,增稠剂,膨润土,香精,硅材料,碳黑,氧化镁,二氧化钛等。
4 制药行业:抗生素,抗酸剂,液浆制剂,静脉乳剂等。
5 生物工程技术:高压均质机在生物工程上的应用愈来愈受到重视,这主要是因为高压均质机
能够高效率地对细胞壁进行破碎从而提取其内含物:如酶、朊等。
下面举几个具体的例子来简单说明一下均质机的应用:
1 为什么化妆品会被表皮吸收:经常听到化妆品广告中有这样的语句:渗入肌肤表层被肌肤完全吸收。事实上,被肌肤完全吸收是不可能的,但渗入肌肤表层却有着科学的依据。生物学告诉我们,人体表皮微孔的平均直径约在1.5微米,而绝大多数化妆品原料在450kgf/cm2的均质压力作用后的平均颗粒度在1微米左右,这样化妆品渗入肌肤就不难理解了。同时也就不难理解国外化妆品行业为什么会大量使用高压均质机。
2 怎样提高鳖精,蜂皇浆,花粉口服液,药品等的人体吸收率:在这些比较贵重的产品的生产中,提高人体的吸收率有很大的意义,因为吸收率提高意味着达到同样效果时所用原料的减少,也即意味着生产成本的降低。怎样达到这个目的呢?大家知道,人体之所以会吸收是由于酶的作用,吸收效率很大程度上取决于酶促反应的面积。进入人体的物质其颗粒度越小则与酶接触起反应的表面积越大,所以吸收的效率越高。而高压均质机的作用就是使介质的颗粒极度细化(液-液均质平均粒度在1um以下),何况均质后的产品还能得到不沉淀高胶状高稳定性等优点,从而使成品的外观也大大改善,所以在较昂贵的口服液中使用高压均质机的效益是显而易见的。
3 根据第2条叙述的原理,相信大家不难理解使用高压均质机后为什么可以提高化学催化剂,各种添加剂以及其它化工产品的功效。
有人问:既然均质机的工作介质是流体,那么在粉状产品中又是如何应用的呢?这个问题再简单不过:用高压均质机细化后,在进行干燥即可得到高质量的粉状产品。
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