Distinguish in the vinegar the universe is not the easy

Distinguish in the vinegar the universe is not the easy thing
Probational reporter Wu Hao of this newspaper

In the Shanxi mature vinegar " Concoct the door " After the incident happens for 4 days, new products quality criteria of mature vinegar of Shanxi are evaluated through the national standard, it is estimated and issue formally before the end of the year.

In the new standard, the total acidity of mature vinegar of Shanxi is by original 4.5 degrees (volume percentage) Change to 6 degrees.

Reporter Europe in Beijing, still some branch investigations of supermarket find, only the acidity is annotated and does not include sodium benzoic acid (preservative) for 6 degrees of Shanxi mature vinegar .

Beijing the intersection of food and the intersection of research institute and chief say edible vinegar divide into, make vinegar and concoct vinegar at present while being red while being stupid. Because it does not totally make the vinegar, involve the question in quality guarantee period in the vinegar to concoct, must add sodium benzoic acid.

On August 6, the media quotes the industry's association's Deputy Chairman Wang Jian's loyal words of Shanxi vinegar and claims, the Shanxi mature vinegar 95% is concocted of vinegar essence. Next day, Shanxi vinegar the intersection of industry and Cao, president of association, gentle to spike a rumour while being outstanding: The Shanxi mature vinegar that the regular producer produces makes the vinegar, 100% have no vinegar essence to concoct.

The reporter knows, vinegar essence scientific name second acid, have another name called glacial acetic acid. Glacial acetic acid of industry is one of the important organic industrial chemicals, are used in synthetic fiber, coating, medicine, pesticide, food additive extensively, dyed, woven etc..

Besides industry, glacial acetic acid can also be used for eating, use as acidic flavoring agent, adding fragtant pharmaceutical, medicines additive,etc..

Edible glacial acetic acid is generally fermented by grain such as the corn and produced, its source is a crop, can eat but with very high costs; But industry glacial acetic acid offers raw materials by petroleum and petrochemical industry, its source is the chemical products, the cost is relatively low.

Acetic acid of higher purity has stronger corrosivity, can stimulate trachea and mucous membrane, can result in burning to contact with the skin.

Then, why will the edible vinegar be concocted with the vinegar essence?

Reporter learn from " formulate, eat the intersection of vinegar and sector standard " country permit not more than 50% edible glacial acetic acid and grain make the vinegar collude, transfer, produce and formulate and eat the vinegar. According to the introduction of expert, dilute the acidity to 4 5 degrees edible glacial acetic acid with ink, add various more and flavour pharmaceuticals, can produce and make the synthetic vinegar of the vinegar with similar taste. Such synthetic vinegar can be eaten safely.

However, the national standard does not allow to use glacial acetic acid of industry to concoct and eat the vinegar absolutely. Because the heavy metal such as lead, arsenic,etc. harmful to health exceeds standard to remain in industry glacial acetic acid, free ore sour to damage to health relatively loud too.

According to CCTV, a lot of small producers still use glacial acetic acid of industry to produce and concoct and eat the vinegar.

"The edible glacial acetic acid annual output of the whole country is thirty or forty tons, and the industry glacial acetic acid annual output of a factory can reach hundreds of thousands tons. " An office manager of factory tells " scientific Times " reporter some glacial acetic acid of Henan.

But the office manager say they edible most glacial acetic acid of factory does not sell vinegar factory at the same time, because " there is too little consumption " ,The main customer is a pharmaceutical factory.

In fact, each the intersection of industry and the intersection of glacial acetic acid and cheaper than edible glacial acetic acid 4000, enormous price differential whether a lot of illegal manufacturer make a desperate move reason that operate violably.

The more terrible one is, the statement claims that if adds glacial acetic acid of industry and gets and eats in the vinegar, it is still unable to distinguish with edible glacial acetic acid directly at present.

But according to stupid red introduction, can measure the content of carbon 14 to appraise through the method of the nuclear magnetic resonance.

" scientific Times " reporter and a professional check organization consult to learn, eat and contain glacial acetic acid of industry in the vinegar, can be tested and appraised the content of lead of heavy metal, arsenic and free ore acid and reflect indirectly, but measure the difficulty at present bigger directly.



Distinguish in the vinegar the universe is not the easy thing