National Beer

Diacetyl, also known as diacetyl ketone, also known as 2, 3-butanedione, when its content in beer exceeds a certain concentration, the beer will have an unpleasant smell, which will seriously affect the flavor and taste of beer .

The determination of diacetyl in beer usually uses the internationally accepted EBC method, and the determination tonight is no exception.

Electronic balances, UV-visible spectrophotometers, and semi-micro Kjeldahl nitrogen distillation devices were placed on the operating table one by one, and the experimental tests were carried out intensively. The teachers from the Shanhai Provincial Institute of Light Industry and the technicians from Rongpi jointly conducted the tests.

"Put 2.5 ml of water into the 2.5 ml colorimetric tube with stopper,...measure 100 ml of undegassed beer, add 2-4 drops of defoamer..."

...

The experiment was going on nervously, but there were talks and laughs in the meeting room. Everyone was very refreshed drinking beer. The most refreshing was Chen Shifa. Of course he hoped that Qin Dong had the last laugh, but no matter who won, Rong Beer is the biggest winner. The country's first beer to remove the smell of horse urine was born at Rong Beer tonight!

In the laughter, when Su Yubo, wearing a white coat, walked out of the experiment, the atmosphere in the originally harmonious meeting room suddenly became serious.

Qin Dong stood up, Dong Qingkun also stood up, the two looked at each other, and both looked at the test results in Su Yubo's hands.

"Don't show me, you just read the final result." Mei Yuxiu said.

"We took the diacetyl EBC test for Teacher Dong and Qin Dong's beer separately." Su Yubo seemed expressionless, but her eyes swept across Qin Dong, and she paused for a while, "Mr. Dong..."

Oh.

There was a moment of sorrow in the conference room.

There was a trace of regret on Liang Yongsheng's face. Chen Shifa couldn't help but took out the cigarette. Wu Geng helped his glasses and rubbed the iron stubble on his chin with his palm...

Lao Ran walked behind Qin Dong and patted him on the shoulder. Qin Dong took his hand along the way, squeezing both hands together silently.

"It's okay, even though we are defeated, he is your senior brother. You will not be worse than him if you study for a few years..." Chen Xiaochun whispered in Qin Dong's ear.

Su Yubo looked at Qin Dong and a group of classmates again, "Mr. Dong’s beer contains 0.06 ppm of diacetyl," she glanced at Qin Dong again, "Qin Dong’s beer contains diacetyl of 1 million ppm. The beer color has an EBC value of 0.7 and a beer bitterness value of 16..."

Su Yubo spoke professionally, but everyone present was a professional beer maker. Everyone immediately understood that Qin Dong... won!

He actually defeated Dong Qingkun by a value of 0.11 parts per million, and the younger brother defeated the younger brother!

"Win?" In the silent conference room, Wu Geng's surprised and pleasant voice immediately blurted out.

Oh.

Mei Yuxiu was very surprised, zero and one millionth, what an accidental number, but this is the gap!

Dong Qingkun's heart was pounding, he couldn't help looking at Mei Yuxiu, who was also looking at him, his eyes seemed full of love and expectation.

The tenth of a millionth, a very small number, happened right under his nose!

For a while, Dong Qingkun had mixed tastes. He knew that he used German yeast, but Qin Dong only selected yeast from the several existing breweries in Qinwan.

"Old Mei..." Liang Yongsheng swept away the regret on his face and asked with a smile, "This final result..."

"We have to believe in the accuracy of the test results..." Mei Yuxiu slowly stood up and said slowly.

"That is to say, Qin Dong-won." Lu Xuguang shook his fist vigorously and shouted excitedly.

"Xiao Qin, congratulations," Lao Ran embraced Qin Dong excitedly and slapped Qin Dong on the back. "It's incredible, it's incredible, it has solved a national problem."

"This is Goldbach's guess in the beer world, Qin Dong, that's great!" Chen Xiaochun smiled and pushed Lao Ran away, hugging Qin Dong.

"Qin Dong, let him carry the sacks too..." Reheman stepped forward, smiling and joking.

...

Qin Dong was caught in the embrace of his classmates, he simply took the initiative and hugged these college students one by one.

Su Yubo walked forward with a smile, but Qin Dong also gave her a big hug. Her face immediately turned red, but no one felt wrong, and the warm applause echoed in the meeting room again...

"You kid, there's a kind," Wu Geng came forward with his beer mug, still punching in the chest, but Qin Dong was very comfortable with this punch.

"Xiao Qin, congratulations." After all, Dong Qingkun took a long breath, squeezed a smile towards Qin Dong, and stretched out his hand very gracefully.

"Brother, congratulations too!" Qin Dong said loudly. He smiled very sincerely, but it was true. Although the two beer had different flavors, they both removed the horse urine smell of the beer. The diacetyl content has dropped.

"You won." For a while, Dong Qingkun had mixed feelings, "I use foreign yeast, and you use domestic yeast..."

This is the crux of the problem. Mei Yuxiu looked at his disciples and was very satisfied with their attitudes. Now, many manufacturers use foreign yeast, and even the yeast used in production is still outsourced. I don’t believe it. your own power.

Some factories tried to spend tens of thousands of hundreds of thousands to introduce yeast. Now it seems that this is unnecessary!

"Okay, now you have to take care of my meal, can't keep me hungry."

Liang Yongsheng, Wang Congjun, Chen Shifa and others gathered around Qin Dong and Mei Yuxiu, discussing excitedly, and when his stomach groaned, Liang Yongsheng realized that he had not eaten yet.

Zhou Fenghe and Wu Geng made arrangements quickly, but Xiao Li from the office opened the door again, "Phone, phone, Mayor Guo's phone!"

Chen Shifa came out in a hurry, but returned in a hurry. Everyone looked at the head of the Rong Beer Factory, who was overwhelmed with joy and anger.

"Mayor Liang said," Chen Shifa breathed a little, and then said loudly, "Congratulations to Rong Beer, congratulations to Qin Dong! Qin Wan, starting today, there is a new beer!"

Qinwan is not without beer. Qin Beer, Rong Beer, Haicheng, and Baisha are all locally produced beer in Qinwan. Guo Peng's words have a clear meaning, that is, beer that can represent this city!

After Chen Shifa finished speaking, Liang Yongsheng picked up the beer, Mei Yuxiu also picked up the beer, "Bang Dang", countless cups met together!

The golden beer came in again, and everyone was tasting Qin Dong's beer, but Dong Qingkun's beer was no one.

"Director Chen, I think I should go back." Fang Lingxian once again submitted his resignation to Chen Shifa during the talks and laughter. "This deputy technical director is Qin Dong!"

Chen Shifa's face was stagnant. The call just now was from Mayor Guo's secretary. In fact, he only conveyed half a sentence, followed by a half sentence. Mayor Guo said, "Qin Dong can work at Qin Beer."

Work at Qin Beer?

Mayor Guo said before that whoever develops a new beer and removes the smell of horse urine can serve as the deputy chief engineer of Qin Beer!