Tongrentang responded that because of donkey-hide gelatin is the product after deep hot working, DNA has been destroyed by the depth, detection is difficult, usually used for pigs, cattle, donkey meat industry standard does not apply to gelatin product identification, recommended using the method of detecting features proteins or peptides to further identify --

Tongrentang gelatin eyebrows: to test standard do not apply

Time: 2016-04-15

Source: China's traditional Chinese medicine

Author: hu bin

Will scrupulously abide by "concocts although numerous, did not dare to omit artificial taste, though you will not reduce material" of the old and famous old adage tongrentang, at the beginning is pushed to the gelatin "door". Media reports, professional impact people buy tongrentang edible gelatin and sent to the shenzhen measurement quality inspection institute for inspection, inspection report were gelatin cattle, pigs, DNA composition detection did not check out the donkey, horse DNA composition.

Recently, the reporter comes to Beijing tongrentang gelatin production base, understand the gelatin in the whole production process and the situation of the gelatin authenticity test.

DNA testing is not applicable to gelatin

Tongrentang responded in a public statement, usually used in food and feed such as donkey (SN/T 3730.4 2013), ma (SN/T 3730.5 2013), cattle, sheep, pigs (SN/T 2051-2008) component testing industry standard does not apply to e-jiao products.

"Media reports of the third party testing method is very sensitive, without processing in trace amounts of pigs, cattle class pollutants, all can lead to detection of pigs, cattle DNA results." Chief engineer rui-hua tian tong ren tang said, tongrentang edible gelatin production line for special production line, there is no introduction of pigs, cattle DNA.

Tongrentang will also edible gelatin, sent to the China inspection and quarantine institution adopts the gelatin ingredients of animal origin products testing laboratory internal real-time fluorescent PCR method, test, detection and DNA. China inspection and quarantine institution (SN/T 3730 series standard drafting project led units) in response to this matter, said: "about SN/T 3730.4 2013 and SN/T 3730.5 2013, the main writer consulting shenzhen entry-exit inspection and quarantine bureau, the answer is both standard does not apply to gelatin sample DNA extraction, so it is not recommended as the gelatin ingredients of animal origin detection standards."

The drafting of the SN/T 2051-2051 standard units, the liaoning entry-exit inspection and quarantine inspection and quarantine technology center also reply, donkey-hide gelatin is the product after deep hot working, DNA has been destroyed by the depth, the standard does not apply to DNA extraction, donkey-hide gelatin products so it is not recommended as the gelatin ingredients of animal origin testing standards.

Shandong academy of agricultural sciences, a research on extracting DNA from the donkey-hide gelatin, according to the results of donkey-hide gelatin products, its processing technology also each are not identical, so the DNA degradation degree is not the same, while traditional gelatin piece of rework for the extraction of the DNA of the nucleic acid increased the difficulty. Away from gelatin processed products in the DNA samples were isolated from the stand or fall of quality, directly relates to the success or failure of using nucleic acid authenticity identification experiment.

"At present the country and industry in food inspection standard is applicable to gelatin animal source identification standard of legal inspection, in terms of the applicable inspection method is blank." Rui-hua tian called for, in the hope that relevant departments as soon as possible, to perfect the relevant national standards, at the same time Suggestions on edible gelatin temporarily China pharmacopoeia method and the national food of animal origin food supplement inspection method of its ingredients.

A small piece of donkey-hide gelatin production after a few months

In tongren temple gelatin production base, production workshop, the bundles of donkey skin from 0 to 6 degrees Celsius after out of the cold storage, the first to open the wooden frame, dried, then through cutting machine cut into uniform of a square leather piece.

"We require suppliers to provide donkey skin must take the lead, ears, tail, so that we to inspect donkey skin." Tongrentang gelatin production base, production workshop director li-chun liu, tongrentang all gelatin ingredients donkey realized the traceability, every one in leather cutting machine equipped with cameras, for feeding donkey skin keep file, ensure the donkey skin pure quality.

After cutting the donkey skin, and was sent to the next bubble leather process. Workshop of dozens of pool filled with donkey skin, li-chun liu, bubble skin for about 72 hours, on the one hand, make the skin soft, on the one hand, to remove the fur of impurities, even during regular change water, ensure that donkey skin is not bad.

Bubble good donkey skin pass wash skin, blanch, further for impurities and grease, then through two a total of more than 20 hours of full decoction, gel extraction liquid. Next, the glue liquid filtration, precipitation, enrichment again to accept glue, then packed in wooden box in preliminary cooling, cut into gelatin piece and a preliminary inspection. After nearly three months after fully dry glue, then sterilization, packaging.

From the whole piece of donkey skin to packing factory gelatin piece, after months of time before and after dozens of working procedure.

Gelatin production process, many processes need manual operation, the production workshop has a strict hygiene standards and requirements, so the staff need to put on the professional protective coat before work, disinfection and competitors, etc.

From material to production quality cengcengbaguan

In order to control the product quality from the source, tongrentang on raw materials procurement, from the supplier's business license, production license, business license, quality standard, inspection reports, to the supplier's personnel agency, factory set up, material management, quality management, transportation management, etc., all want to check one by one, qualified rear can supply.

YanChangWen is introduced, the production base of vice President 3 kg dry donkey skin can produce 1 kg of donkey-hide gelatin, only 1 litters donkey breed, breeding for 3 years to market, donkey skin also soared in recent years, the price of 1 kg of donkey skin from 150 yuan rose to about 400 yuan. "In addition to the raw material cost, human resources, water and electricity resource, material delivery, equipment loss, propagandizing also added a lot of cost for gelatin production. Therefore, 1 kg of qualified gelatin price should not be less than 1200 yuan."

Chief engineer rui-hua tian tong ren tang, said tongrentang gelatin production base in strict accordance with the new version of GMP requirements, of raw materials, packaging materials, intermediates and finished product sampling, according to the latest version of national standard and the 2015 edition of "standard of" pharmacopoeia of the People's Republic of China for examination and review, to ensure that all materials and products meet quality standards. At the same time, in the production, tongrentang gelatin production base from man, machine, material, method, ring "" five aspects comprehensively strengthen product quality management, strengthen supervision and inspection, completes the key control points monitoring donkey-hide gelatin, strengthen enterprise audits, risk assessment, process validation and product quality review, etc, in order to ensure product quality.