Cause of acid value exceeding standard
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Last Update: 2019-03-20
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Source: Internet
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Author: User
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Introduction: the food problem has always been a topic of our concern, and the excessive acid value is one of them, so what are the reasons for the excessive acid value? In our daily life, we often say that melon seeds, fried food or vegetable oil will have a harrass after a long time This harrass indicates that the oil has deteriorated The technical term is rancidity Acid value is an index to measure the degree of rancidity of oil So what are the causes of acid value exceeding the standard? In chemistry, the acid value (or neutralization value, acid value, acidity) is the milligram of potassium hydroxide (KOH) needed to neutralize 1 gram of a chemical Acid value is a measure of the number of free carboxylic groups in a compound (such as fatty acids) or mixture The reasons for the high acid value are as follows: first, the improper storage or long-term storage of raw materials results in the oxidation of the oil in the raw materials; second, in the production process, the operation process is not strictly controlled, the temperature is too high, and the time is too long, which makes the oil contained in it accelerate the oxidation and quality; third, the product packaging is not strict, and the temperature and humidity will also lead to the increase of the peroxide value, Water, air, temperature, light and impurities can promote the production of aldehydes, ketones and acids after oil rancidity, resulting in the acid value of the product exceeding the standard A slight increase in acid value and peroxide value will not damage human health, but if the acid value is too high, it will lead to gastrointestinal discomfort, diarrhea and damage to the liver The above is a brief introduction to the reason why the acid value exceeds the standard I hope these common sense can help you If you want to know more about the common sense of acid price exceeding the standard, please go to Baibai safety net to search Editor in charge: Chen miaoqi
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