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柠檬酸

分子式:C6H8O7
外观与性状:白色结晶粉末,无臭。熔点(℃):153
物理性质:在室温下,柠檬酸为无色半透明晶体或白色颗粒或白色结晶性粉末,无臭、味极酸,在潮湿的空气中微有潮解性。

检验项目 单位 BP93标准
性状   无色结晶颗粒或白色结晶粉末
鉴别试验   符合试验
澄清度、色泽   符合试验
含量 % 99
水份 % 7.5-9.0
钡盐   符合试验
钙盐 PPM ≤200
铁盐 PPM ≤50
重金属 PPM ≤10
草酸盐 PPM ≤350
氯化物 PPM ≤50
硫酸盐 PPM ≤150
易碳化物 PPM 不深于标准
硫酸灰份 % ≤0.1
砷 (As) PPM ≤1
细菌内毒素 IU/MG  

柠檬酸是一种果酸,也叫枸橼酸,能够加快更新皮肤角质,其具备的酸性特质可用做调味剂、日化用品、防腐剂等,主要作用如下:

1、食品添加剂:柠檬酸是一种有机酸,酸味较强,在柑橘、菠萝、柠檬等水果中含量较高,口感较好。可以适量加入到饮料、食品中,具有增进食欲、提高口感的作用;

2、日化用品:柠檬酸能够加快身体代谢,促进皮肤角质的更新,可用于日化用品中,能够帮助美白,使皮肤更有光泽;

3、防腐剂:柠檬酸属于酸类,且酸性较强,其形成的酸性环境可以抑制细菌的生长,从而避免食物变质,达到防腐的效果。

柠檬酸也能够抑制钙在血液中的凝固作用,可以软化血管、预防动脉硬化。柠檬酸适量食用没有危害,但是长期食用罐头、果酱等加工食品容易使体内柠檬酸过多,从而加快机体对钙的排出,容易造成低钙血症。

 

创建时间:2024-07-31 11:34
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