The ingredients are only egg yolk and salt, 1 yuan per grain, generally true; The package is marked with "salted egg yolk products", and one or twenty capsules are sold for a few yuan, which may be artificial products
Mid-Autumn Festival is approaching, and lotus egg yolk mooncakes can be described as indispensable seasonal delicacies. However, recently a video blogger on the Internet said that there are "artificial salted egg yolks" on the market, which contain various additives, "The machine can produce 100,000 egg yolks in 1 hour!" Do you still dare to eat? ”
Is what is said in the video true? Will some of the salted egg yolks on sale be artificial? The reporter carried out a visit and investigation, and purchased 6 salted egg yolk products for inspection. The test results showed that the 5 products labeled as "salted egg yolk" had no additives, which could be judged to be real salted egg yolk; The 1 product marked with the words "salted egg yolk products" has a starch content of nearly 40% - this is "artificial salted egg yolk". Relevant invention patents show that salted egg yolk products can be made by mixing a certain proportion of fresh eggs, egg yolk powder, starch and additives.
So, how to tell "real from fake" salted egg yolk? According to experts, the structure of real salted egg yolk is uneven, the outside is soft and the inside is tight, and the texture is hard; The salted egg yolk products have a uniform structure and elasticity, and there will be no delamination and hard core after biting. In addition, consumers can determine whether it is a real salted egg yolk by checking the content of the label, boiling and stirring, etc.
Samples purchased and sent by the reporter
【Investigation】The blogger suspected that he bought artificial salted egg yolk There is no production date, but the basic judgment is real egg yolk
Recently, one type of video has been widely circulated on the Internet. In the video, the yellow, long solid product is cut by the machine and finally becomes "salted egg yolk". Some netizens couldn't help but worry about the quality of salted egg yolk, and commented: "I won't eat salted egg yolk mooncakes this year." ”
On social platforms, some bloggers complained that she bought salted egg yolk to make mooncakes, but the salted egg yolk was too unpalatable, and even suspected that it was artificial and planned to throw it away. Up to now, the post has more than 4000 likes and comments.
The blogger said that the merchant who bought the salted egg yolk was Jiangmen Xinhui "egg" egg store, is the suspicion of "artificial salted egg yolk" true? The reporter went to the egg shop as the owner of the bakery to select, and the owner said that the salted egg yolk he sold was real. When the reporter further inquired about the production date, the owner only said that "they were all produced in the last 5 days, very fresh", but could not provide conclusive evidence to prove it. The salted egg yolk product label shows that the product ingredients are salted egg yolk and edible salt, the shelf life is 12 months, the production unit is Jiangmen Tonghui Food Co., Ltd., and the factory address is also indicated, but there is no production date.
Qin Yingchang, testing supervisor of Guangdong Zhongjian Dayuan Testing Technology Co., Ltd., introduced that according to the Food Safety Law, food business operators selling bulk food shall indicate the name of the food, the date of production or the production batch number, the shelf life, and the name, address, contact information and other contents of the bulk food container and outer packaging. The above salted egg yolk products do not indicate the date of manufacture and do not meet the legal requirements.
Zheng Jianxian, a professor of food science at South China University of Technology, also said that bulk frozen foods without a production date and complete label content, or food safety hazards, are best not to eat.
In order to find out, the reporter entered the site of Jiangmen Tonghui Food Co., Ltd. as a job seeker to investigate. On the factory floor, there are a large number of plastic buckets filled with marinated eggs, and several employees are marinating duck eggs in a mash. The staff introduced that after the duck egg is pickled, crack open the salted duck egg, leave only the yolk, pick the eggshell clean and then bag, which is the complete salted egg yolk production process. However, no one in the factory carried out this work step that day, "according to the pickling of salted eggs, the eggs should be beaten in different time periods, and this link is not always available." "Basically, you can tell that this factory sells real egg yolks.
【Visit】I want to see how the online hot-selling merchants are offline and accidentally found that the business address is not found in this store
How exactly is salted egg yolk produced? Is it really possible to use additive artificial salted egg yolk? The reporter went to Zhongshan Huangpu Town, the country's first "China Food Industry Demonstration Base", and salted egg yolk is a major prefabricated item in the flavor of Huangpu.
"Huangpu Town Lamei Trading Company" sells salted egg yolk products on multiple e-commerce platforms, of which the monthly sales volume of "real salted duck eggs" products is 300+. The reporter went to the factory address according to the instructions of the navigation software to understand the situation. Unexpectedly, when the navigation showed that the destination was reached, it was found that the address was in a residential building, and there were no signs of shops or factories at all.
Subsequently, the reporter searched for another egg yolk product factory on the navigation software - Hongfeng Egg Processing Factory in Dongsheng Town, Zhongshan City. However, after arriving at the destination, the reporter found that the factory building had been abandoned, the gate was rusty, and the words "factory for rent" were pasted at the door.
Workers at work, fresh eggs on the table (abnormal shooting)
【Detection】5 models without additives are real egg yolks, and the starch content of artificial products with additives is nearly 40%
Since it was impossible to see the production of salted egg yolk in person, the reporter randomly purchased 6 kinds of "salted egg yolk" from different origins and manufacturers on the e-commerce platform and the vegetable markets in Liwan District of Guangzhou and Nanhai District of Foshan, and sent them to professional inspection institutions for testing.
Search for "salted egg yolk" on an e-commerce platform, and the first-selling product is called "authentic red heart salted egg yolk", with sales of 50,000+. Click on the product detail page to display the product as "salted egg yolk products", 25 capsules cost about 8 yuan, ingredients include egg yolk, starch, food flavor, food additives. The reporter purchased this product and marked it as sample No. 2.
The packaging of the remaining 5 samples all claimed to be salted egg yolks, and the ingredients were all water, edible salt and salted egg yolks, and the price ranged from 20 to 25 yuan for 20 pieces.
For 6 samples, the laboratory tested preservatives, food colorings, Sudan red and starch. The results showed that sample No. 2 was detected with potassium sorbate content of 0.0724 grams and starch content of 39.8 grams per 100 grams. The remaining five samples were not detected with additives, with starch content ranging from 0.08 g to 0.46 g per 100 g of sample.
The laboratory used fresh salted duck eggs to take egg yolk for testing control, and found that the starch content per 100 grams of sample in raw salted egg yolk was 0.2 grams. Qin Yingchang introduced that no additives were detected in the other 5 samples except No. 2, "After comparative experiments, it should be real egg yolk." "And sample No. 2 is not a real yolk, it is an egg product that has changed physical properties.
Huang Weijuan, associate professor of the College of Food Science of South China Agricultural University, introduced that the potassium sorbate added in sample No. 2 is a preservative, and its function is mainly to prevent the spoilage of salted egg yolk and extend the shelf life. According to relevant regulations, the maximum amount of sorbic acid and its potassium salt in mooncake and baked goods filling is 1.0g/kg (in terms of sorbic acid), and 0.724g/kg potassium sorbate was detected in sample No. 2, which is within the standard.
The real egg yolk is light yellow after boiling and stirring, and the salted egg yolk product is uniform and viscous
【Distinguish】Real salted egg yolk color yellow, loose outside and tight inside, artificial salted egg yellow rosy and uniform structure
So, how can consumers identify real salted egg yolks and synthetic egg yolks? Qin Yingchang introduced, first of all, through the label to identify the content, generally really salted egg yolk, ingredients in the ingredient list will only label egg yolk, edible salt. Secondly, the label of artificial salted egg yolk will generally indicate the real attribute "salted egg yolk products" near the product name. Thirdly, it can also be distinguished by boiling and stirring, the water is clearer after the real egg yolk is boiled and stirred, the egg yolk is light yellow lumps, and there will be a layer of grease floating on the surface; Salted egg yolk products are added with a large amount of starch, and they will be uniformly viscous after boiling and stirring.
Huang Weijuan introduced that the color of real salted duck eggs is yellow, the structure is uneven, the outside is loose and the inside is tight, there will be a small hard heart in the middle, and the taste is soft and delicate; The salted egg yolk products are rosy in color, uniform in structure, and there will be no delamination after biting, no hard core, and the taste is hard and elastic.
In addition, the price of real salted egg yolk is generally 1 yuan per grain, while the price of synthetic salted egg yolk is lower, even 20 pieces for 9.9 yuan. Huang Weijuan also reminded consumers that when purchasing food, they should look for the QS logo, which is the mark that the enterprise has obtained the food production license.
(Text/Photo: Yangcheng Evening News All-media reporter Luo Qingyu Chen Liang)
Source: Yangcheng Evening News