"The supervision of government departments is one thing, and we consumers must also learn how to distinguish them, so that those black-hearted profiteers will not be able to start. Pen "Fun" Pavilion www.biquge.info"

"Speaking of this identification method, Zhen Zhen, didn't you just rotate in the nutrition and food safety institute these days, do you know how to tell if poppy husks are added to this food?"

"If it's like the situation we encountered in Liang Kee Restaurant today, the duck soup is a whole poppy shell, so it's easy to distinguish from the appearance, but ......" Ye Zhenzhen paused slightly, and then said: "Nowadays, many black-hearted profiteers process poppy shells into powder, and then add them to food as condiments, so that it is difficult to identify them by the naked eye." ”

"There should be another way to identify it other than visual observation, right?"

"Well, yes, it is through laboratory testing to check the food for poppy husk residues such as papaverine, morphine, codeine and nacoine, and if these substances are detected, it can prove that poppy husks are added to the food. ”

"Is the test reliable?"

"Reliable, in fact, the detection principle is very simple, most of the various alkaloids of poppy shells exist in the form of vinegar, after acidification and hydrolysis, the formation of alkaloid salts with different strengths is dissolved in water, dissolved in organic solvents under alkaline conditions, and the poppy shells and their water immersions in the food are heated and acidified and hydrolyzed, considering the removal of impurities, extracting and removing fat-soluble substances with organic solvents, and then alkalizing, extracting and concentrating with organic solvents, after that, you can use different methods to detect. ”

"It sounds simple, but the detection method should be cumbersome. ”

"There are simple methods, there are troublesome methods, and the detection effect of each method, that is, the detection limit, is different. ”

"What do you say?"

"At present, there are eight commonly used detection methods, spectrophotometry, thin layer chromatography, oscillopolarography, gas chromatography, high performance liquid chromatography, gas chromatography with mass spectrometry, and liquid chromatography with mass spectrometry. The first three methods are simple to operate, but the minimum detection limits are not as good as those of the latter methods. For example, spectrophotometry is used to determine the total alkaloids in poppy husks, while gas chromatography-mass spectrometry (GC-MS) can quantitatively detect various alkaloids in poppy husks up to nanogram ......."

Listening to Zhen Zhen's series of professional descriptions, Ke Xin frowned, interrupted Zhen Zhen's words with a smile, and said: "Zhen Zhen, you are speaking more and more like Nanda God now, you are talking too professionally, do you have any experience suitable for our ordinary consumers?"

For ordinary consumers, if they suspect that they have eaten food with poppy husks, they can think about whether it is a hot pot restaurant or a restaurant's dishes. If this is the case, it is more likely to eat food with poppy husks, you can reduce the number of times you go to eat, and drink more water, eat more vegetables and fruits, and at the same time, call 12331 to report, and professional institutions will make professional tests. ”

"Zhen Zhen, can the nutrition and food safety institute where you are rotating now do the detection of poppy husk content?"

"Yes. ”

You Kexin smiled and asked, "Can we test everything we usually eat?"

"Ahh

You Kexin waved his hand and corrected: "It doesn't include what we eat at home, I mean, check what we often eat outside, for example, the breakfast we had at the Five Grain Porridge Shop this morning, the roast duck we ate at Liang Kee Restaurant at noon, and so on." ”

"I understand what you mean, but this is also a big project, Kexin, think about it, the place where we usually go to eat, in addition to the commercial street, which is the big market, and the snack bar downstairs of our Xincheng apartment, there are so many kinds of snacks in each snack bar, check them all the way, hehe, I have no problem working, but the leaders of the Nutrition and Food Safety Institute will not agree. ”

"I'm just casually saying, I know that public units like yours have very strict rules and regulations, and some samples may not be accepted. ”

"Well, that's the case. ”

You Kexin sighed and said, "It's better to wait for the test results after sampling from the Food and Drug Administration today, and I don't know how long it will take to get the results." ”

Ye Zhenzhen shook her head, "I don't know how long it will take to get the results, even if the results do, they will not announce it until they investigate the truth of the whole matter." ”

"The truth of the matter? Are you saying that Liang Kee Restaurant may have been framed?"

"Well, we also heard Nan Zhiqiao say at the time, what the truth of the matter is, we don't know now. ”

You Kexin suddenly changed the topic and said, "Zhen Zhen, why don't you buy another copy of the duck soup made by Liang Kee Restaurant today, and bring it to your office to test it and see if there is any problem.

"Kexin, why are you so anxious to know the result?"

Ke Xin smiled and said, "Actually, I think that the roast duck in the oven of Liang Kee Restaurant tastes very good, if they are framed, and the roast duck they usually make is no problem, we can eat it again next time." ”

As soon as she heard Kexin's words, Zhen Zhen thought to herself, this Kexin, she was worried about the poppy shell just now, but for a few minutes, she was thinking about when she would go to eat roast duck next time, and it seemed that there should be no problem in her heart.

Ye Zhenzhen smiled and said, "Okay, I'll go to Liang Ji Restaurant again in the afternoon, buy a roast duck and a duck rack soup to bring back to the institute, and let the senior sister inside do the experiment, add a sample by the way, and the results will be available tomorrow." ”

"Great, Zhen Zhen, Nan Dashen invited to eat today, I didn't have a lot of fun, if the test result is okay this time, we will eat by ourselves next time." You Kexin paused slightly, and then said: "Liang Kee Restaurant has won this year's 'Cooking Excellence' plaque, if there is a problem with their roast duck, will this plaque be owned by the second place Yang Kee Restaurant?"

"I don't know, but if there is a problem with Liang Kee Restaurant, it will definitely benefit from the hotels that usually compete with him. ”

The two talked for a while, and Kexin's mother came to urge Kexin to rest, and Kexin ran back to her room.

Ye Zhenzhen thought about what happened today, and was an audience judge in the King of Chef competition, but she found out that Nanda God's mysterious secret guard, and made a fuss, Nanda God invited her to dinner, and it turned out that she had a good lunch, and she broke up unhappily, and she also made a hearty complaint, and she didn't know how things would develop in the future......

Thinking of this, Zhen Zhen was also very curious about the poppy shells found in Liang Kee Restaurant, and as soon as the lunch break was over, Zhen Zhen set off alone and went to the commercial street where Liang Kee Restaurant was located again.