Nan Zhiqiao didn't answer, but asked, "Do the guests order more braised vegetables?"

Chef Liang: "Not much, the guests who come to our Liang Kee Restaurant are all for the roast duck, most of them are roast duck, duck soup, and a few fresh vegetarian dishes. Pen | fun | pavilion www. ｂｉｑｕｇｅ。 ｉｎｆｏ”

Nan Zhiqiao looked around the kitchen and asked, "Where do you put the spices you usually use for cooking?"

Chef Liang pointed to the corner of the huge stove behind him, which was filled with small jars, and said, "That's the seasoning area." ”

Nan Zhiqiao walked to the front of the seasoning area and took a closer look, there were salt, monosodium glutamate, soy sauce, and vinegar that are commonly used......

Nan Zhiqiao's eyes fell on the salt shaker and asked, "This is the salt shaker that you usually use?"

"Yes, I added a packet of new salt to it this morning. It was Chef Liang who was standing on the side.

Nan Zhiqiao turned his head to Ye Zhenzhen behind him and ordered, "Zhenzhen, you go to the hall to pick two morning glories." ”

Ye Zhenzhen was a little confused, thinking to herself, when she was so nervous and critical, Nan Zhiqiao was still in the mood to let herself pick flowers, but since Nan Zhiqiao commanded, what use might this morning glory be?

Ye Zhenzhen answered and turned to leave.

Taking advantage of the time when Zhen Zhen left, Nan Zhiqiao found two clean glasses, dug out a spoonful of salt from the salt jar just now and put them in the glasses, and asked Chef Liang to find an unopened package of table salt, opened it on the spot, dug out a spoonful as well, and poured it into another glass, and finally, the two glasses that poured salt were filled with water.

Ye Zhenzhen came back with two morning glories, put them in Nan Zhiqiao's hand, and asked, "Two peach, is it okay?"

Nan Zhiqiao smiled slightly, "Very good." ”

Nan Zhiqiao put two pink morning glories, one in each glass, and the morning glory invaded the water.

Everyone in the kitchen looked inexplicably wonderful, what was this young and handsome man in front of him doing?

Liang Chen asked, "Zhiqiao, what are you doing?" does this morning glory have anything to do with food poisoning?"

Nan Zhiqiao looked calm and said, "Don't worry, you will know the result soon." ”

Sure enough, in less than half a minute, the morning glory in one glass changed color, from the original peach to blue, while the morning glory in the other glass did not change color and still maintained the original pink color.

The corners of Nan Zhiqiao's mouth curled slightly, "The cause has been found, it is nitrite poisoning." ”

Liang Chen asked loudly in disbelief: "Nitrite poisoning? How is it possible, we have never used nitrite in Liang Kee Restaurant." ”

Nan Zhiqiao explained: "The salt we usually eat is sodium chloride, the aqueous solution of sodium chloride is neutral, and nitrite, mainly sodium nitrite, has the same appearance as table salt, but the aqueous solution of sodium nitrite is alkaline and can react with the anthocyanins in morning glory to make morning glory blue." ”

Ye Zhenzhen understood what Nan Zhiqiao meant, and said: "I know, the anthocyanins in morning glory are like litmus indicators, turning red when acid, turning blue when encountering alkali, morning glory when it encounters an alkaline aqueous solution of nitrite, and a neutral aqueous solution of sodium chloride does not change color when encountering salt sodium chloride, and now the results of this experiment show that the solution in this glass of discoloration is alkaline, that is to say, it is not the salt sodium chloride that we usually eat, the most likely is nitrite, this knowledge was learned in junior high school biology class, I forgot it just now." ”

When Nan Zhiqiao and Ye Zhenzhen said this, Liang Chen seemed to remember it and asked, "Since it can be determined that it is nitrite, is this nitrite poisoning serious?"

"It depends on the amount of intake, nitrite is widely found in the human environment, is the most prevalent nitrogenous compound in nature, nitrite poisoning is generally caused by eating nitrate or nitrite content of pickled meat products, kimchi and spoiled vegetables, or industrial sodium nitrite as salt consumption caused by poisoning," Nan explained. Nitrite is a highly toxic substance, which can cause poisoning in adults if ingested 0.3-0.5 grams, and can be fatal if 3 grams. ”

Liang Chen was covered in a cold sweat by Nan Zhiqiao's words, and asked in a trembling voice: "It can't be so serious, right?" I see that those customers just now are just a little blue, and those two who fell to the ground, after being sent to the hospital, should be fine after gastric lavage and detoxification, right?"

Nan Zhiqiao continued: "Nitrite food poisoning, also known as enterogenic cyanosis, cyanosis, black mouth disease, etc., is due to the fact that after nitrite enters the blood, it can oxidize the normal oxygen-carrying low hemohemoglobin into methemoglobin, thus losing the oxygen-carrying capacity and causing tissue hypoxia, resulting in cyanosis, such as bruising of the lips, nose tip, fingertips, and severe eye conjunctiva, face and whole body skin bruising, as well as dizziness, headache, fatigue, rapid heartbeat, drowsiness or irritability, dyspnea, nausea, vomiting, abdominal pain, Diarrhea and other symptoms, severe cases will also be coma, convulsions, irregular heartbeat, etc., and finally death due to respiratory failure. ”

Hearing the word "death", cold sweat broke out on Liang Chen's forehead, and he said to himself: "Will there still be death? How can it be so serious? How can nitrite appear in the back kitchen of Liang Kee Restaurant? How can it be ......?"

Liang Chen was a little distracted, Nan Zhiqiao reminded: "Now in addition to the medical care to appease customers with food poisoning, the most important thing is to find out the source of nitrite. ”

"Yes, Zhiqiao, you are right, the most important thing now is to find out the source of these nitrites, how can something that I have never used in Liang Ji Restaurant appear in my own salt jar, someone must have framed it. ”

Liang Chen remembered the surveillance video installed in the back kitchen, and immediately said to a sturdy man in his forties beside him: "Old Xiao, go and call up the surveillance video in the back kitchen." ”

Lao Xiao reflexively walked out of the kitchen, and after two seconds, there was a commotion outside the kitchen, and it was not Lao Xiao who came in again, but a group of policemen in police uniforms.

The police officer at the head showed a search warrant and said: "The police have received a report that toxic substances have been found in the meals of Liang Kee Restaurant, which has caused one person to die of poisoning and many people to be hospitalized.

"Me. Liang Chen walked out of the crowd, stood opposite the police, and asked, "Comrade policeman, is it really dead?"

"Well, an eight-year-old girl died on the way to the hospital, and the child's parents called the police, since you are the person in charge of Liang Kee Restaurant, come with us to the police station. ”

The policeman in charge said politely, but with an expression that could not be refused.

Liang Chen's cold sweat disappeared just now, but he calmed down, turned back to Nan Zhiqiao and said, "Zhiqiao, you help me deal with the matter here, I'll go to the police station with the police comrades first, and explain it clearly, and it'll be fine." ”

Liang Chen said calmly, but the panic in his eyes was clearly seen by Nan Zhiqiao, and Nan Zhiqiao comforted: "Don't worry, I will take care of it." ”