在化学中,酸价(或称中和值、酸值、酸度)表示中和1克化学物质所需的氢氧化钾(KOH)的毫克数。酸价是对化合物(例如脂肪酸)或混合物中游离羧酸基团数量的一个计量标准。典型的测量程序是,将一份分量已知的样品溶于有机溶剂,用浓度已知的氢氧化钾溶液滴定,并以酚酞溶液作为颜色指示剂。酸价可作为油脂变质程度的指标。酸价的单位:(KOH)/(mg/g)。
In CB the acid value was 1.7683mg/g; water and volatile matter concentration was 0.00091%; Peroxide Value was 0 meq/kg, carbonyl value was 0.4567meq/kg.
可可脂的酸价为1.7683mg/g;水分及挥发物含量很低,为0.00091%;过氧化值亦为0meq/kg;羰基价也很低,为0.4567meq/kg。
参考来源 - 乌桕类可可脂氧化稳定性机理的研究·2,447,543篇论文数据,部分数据来源于NoteExpress
冷藏有利于保持酸价稳定性。
The refrigeration was helpful in the stability of acid value.
结果表明,三种包装袋对抑制酸价升高的作用不大。
Results show that three materials have little effect of inhibiting the raise of acid number.
本文研究表明:碎核桃仁在加速氧化试验过程中,过氧化值和酸价持续不断增加;
The results showed that the fragment walnut kernel's peroxide value and acid value are increasing in the time of accelerated oxidation.
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