Lin Gao Qiming

Chapter 342 Sweet Potato Kvass

Whether the people of Ming Dynasty in Guangzhou will buy this Liancheng dried sweet potato that came out in advance is unknown, but Wu Nanhai always feels that it is too low-end to make money selling such a relatively basic product as dried sweet potato.

Wu Nanhai said: "Dried sweet potatoes can be regarded as one direction. The depth of development is not enough, and the added value is too low."

Mo Xiaoan said: "The problem is that the people of Ming Dynasty don't need starch, so who will produce starch and sell it to?"

"The people of Ming Dynasty don't need it, we need it ourselves." Huang Dashan smiled inscrutably, "Not to mention the industrial demand, it can also be used to improve our food. Starch can be used to make many products."

Everyone subconsciously moved away from this mysterious figure.It seemed that he was emitting horrible microorganisms such as bacilli and viruses all over his body.In fact, 99% of the biochemical laboratory in Huang Dashan is a variety of useful strains. In addition to a variety of mushrooms, there are many fermentation strains in the culture medium.

"There is one thing that satisfies your export habit and is also useful for improving everyone's food—monosodium glutamate." Huang Dashan said, "I have special strains available, and the quality is not bad."

"Doesn't it mean to use rice to make MSG?"

"Of course rice can also be made. In fact, it is starch that works. So it is not surprising that starch-rich sweet potatoes and potatoes are fine." Huang Dashan said, "Cooking wine, vinegar, soy sauce, sauce, these condiments are originally our It can be made with rice. The reason why food factories did little in the past is mainly to save food. Now that there is a large and cheap source of starch, sweet potatoes, we can directly expand the scale of production.”

When Shi Yuren talked about his glucose injection plan, Wu Nanhai expressed his strong support.Do as much as you say.But Shi Yanren said that there is no need for too much for the time being, a few kilograms is fine.

"It doesn't cost much to make glucose injection."

Dextrose injections, while helpful, are not a much-needed drug.It doesn't matter if you do it or not.Shi Yanren's eagerness to figure it out was also to prove the value of the existence of the pharmaceutical factory - the executive committee has such a large investment, and it can't fool people with oral saline all day long.

"The oral saline solution and herbal tea you prepared are very good. I will prepare more in the future." Wu Nanhai said, "The weather is hot recently, so I need it."

"Actually, I want to make salt soda." Shi Yanren said, "Carbonated drinks can quench your thirst. But now there is no baking soda."

"Soda is good, the new favorite of fashion—" It seems that Mo Xiaoan is ready to sell soda to the people of Ming Dynasty.

"Baking soda with soda?" Wu Nanhai said, "When I was a child, I used it according to the book - it was terrible! It was very unsuccessful. You should spare us. I heard that Ma Dugong designed a soda machine? No need Baking soda can directly dissolve carbon dioxide into liquid."

"That's right, it is indeed possible—he is copying off-the-shelf designs from history anyway. But where can we find high-purity carbon dioxide? I heard that there are less than [-] large and small pressure-resistant steel cylinders in total. It is definitely not an urgent need to make soda things."

Huang Dashan laughed: "You are really modern enough, you only know chemical preparation and physical processing. You have forgotten about microbes—where does the champagne gas come from? Where is the beer? This is not adding baking soda or directly adding carbon dioxide. Made it."

"You mean to make beer and use sweet potatoes?" Wu Nanhai responded quickly.

Huang Dashan nodded: "Malt is needed to make beer, and wheat and barley are in short supply now. Otherwise, the bananas of the special investigation team would have been dry. I haven't heard of sweet potatoes making beer." He blinked, "But I Can be kvass."

"Gvass?!" Several people shouted together.This thing is rare.

They have all heard the name of this drink that is popular in Russia and Eastern Europe.This beverage is fermented and brewed with dry bread. Its color is similar to that of beer and is slightly red.

Traditional kvass is fermented with bread, but Huang Dashan knows that some modern kvass made by factories omit the bread process in order to save cost and manufacturing time, and are directly made of starch-rich raw materials, plus several kinds of kvass Made with natural or synthetic fragrances.In the past, he helped a Northeast boss in the fermentation process of sweet potato kvass.

Mo Xiaoan said: "Kvass is much more advanced than soft drinks! There are many rich people in Ming Dynasty, so Kvass can target the rich women's market!"

"I think it's good enough for us to drink by ourselves." Wu Nanhai said, "Is it okay?"

"Kvass made from sweet potatoes is a new technology developed in the 90s." Huang Dashan said, "The process is simple, but the disadvantage is that it does not have the aroma of bread kvass, and there is no synthetic flavor available here, so we have to add something artificially."

"How to solve the sealing of kvass? There is no soda bottle capping machine, and there is no tinplate for bottle caps. It is a carbonated drink."

"How to seal champagne, Kvass can also seal it." Huang Dashan said, "The cork is tightened with wire and sealed with wax. The pressure of the bottle of champagne is much higher than this. I have never seen a bottle capping machine. , It’s not a high-tech thing to think about, and it can always be made in the future. Tinplate, as long as there is iron and tin, it can be made.”

"What equipment do you want?"

"A few large tanks are enough." Huang Dashan is confident, "However, the various culture materials I need must be allocated in full - now the demand for bacteria and enzymes is increasing, and equipment and culture media are available. gap."

Different from traditional kvass production, Huang Dashan's process is very simple.First peel the sweet potatoes, grind them into a slurry, and mix it with a slurry with a moisture content of 75%. Then he watched the thermometer and added a small piece of culture medium.

After an hour, he added another piece of similar thing, and in this way, every 30 minutes to 60 minutes on average, he would add something that looked very suspicious. temperature.

"What is this?" Wu Nanhai couldn't help asking.

"Several kinds of enzymes." Huang Dashan replied, "Cytolytic enzymes, pectin-decomposing enzymes, several amylases..."

Enzymes added in turn decompose all the dextrin in the sweet potato slurry into sugar.

Then came the fermentation process, and he continued to add suspicious substances, this time proteolytic enzymes.

Wu Nanhai watched him inoculate, heat, and add water back and forth, having a great time, and he was very suspicious of what he was doing--Huang Dashan didn't seem to be making fermented drinks, but it seemed to be making medicinal water.

Finally, after boiling, cooling, and filtering, Huang Dashan carefully poured the culture liquid in the two culture tubes into the filtered juice.

"This is a culture solution of brewer's yeast and Bacillus daimeri."

"It's easy to talk about yeast. You won't have a problem with Bacillus daimeri." Wu Nanhai was deeply worried about things like bacillus.

"It's okay." Huang Dashan didn't explain much.Take care of the fire workers to control the temperature, and always keep the temperature of the liquid at 26°C, allowing it to ferment slowly. "After 16 hours the fermentation is over, then it's filtered and bottled, pasteurized, and then left to sit for a few days until it foams and kvass becomes."

"Is this all right?!" Wu Nanhai was very confused—it was completely different from what he had imagined.

"This is the power of bioengineering." Huang Dashan proudly said, "This is just a trial product. If conditions permit, add some natural essential oils, fruit juice, honey, citric acid, etc., to taste better."

"Citric acid is really a good thing. It is needed for canning and soda. It would be great if the Ministry of Chemical Industry can produce it." Wu Nanhai thinks that citric acid has a certain effect of purifying water, disinfecting and sterilizing bacteria, and can improve the digestibility of protein in livestock feed. , improve feed utilization.

As for the food processing plant itself, this food additive is also very much needed - it is used as an acidic flavoring agent in the manufacture of beverages, soft drinks, candies, snacks, biscuits, canned food, dairy products and other foods.Last but not least, citric acid is also an antioxidant in edible oils - just what the coconut oil extraction project that is about to start is needed.

Huang Dashan didn't take it seriously: "What's the matter with the Ministry of Chemical Industry?"

"Isn't citric acid from a chemical factory?"

"Citric acid is made by fermentation," Huang Dashan said. "Submerged fermentation of citric acid in dried potato powder—this is a unique technology in our country. I also have this strain."

"We also have sweet potatoes!" Wu Nanhai said.

"Customize a fermentation tank." Huang Dashan nodded, "I remember that the Planning Commission did not bring a special fermentation tank. The technical content of the fermentation tank is not high, and it can be made with carbon steel."

So the production of kvass and monosodium glutamate was included in the plan.Wu Nanhai and Mo Xiao'an discussed it, and went to the Second University Library to search for information. They found several sets of architectural design drawings and equipment drawings of indigenous sweet potato processing enterprises, and sent them to the Planning Committee for approval.Soon the approval form came down.

Mo Xiaoan went to Jiang Ye—showed him the equipment requirements and drawings.Jiang Ye took a few glances: Is this simply an all-wood structure?Except for the shaft and milling knife, which are made of iron, they are all made of wood.Even the transmission rods and gears are.

"Where did this come from?"

"In the big library, the blueprint of the commune's sweet potato processing factory in ***." Mo Xiao'an said, "Almost no steel is used, almost all of them are made of wood, which saves materials and is easy to process."

Jiang Ye shook his head: "This kind of thing, if it sounds good, it should be replaced urgently. If it doesn't sound good, it looks like a product for the leaders to see." He pointed to the structural drawing of the potato washing machine, "The roller of the all-wood mechanism, the hardwood lever, and the wooden gear … Tsk tsk, did the designer consider the strength of the material? It is shaken by hand. A few hundred catties of sweet potatoes, plus a pool full of water, may not be shaken even by the governor.” He continued to look, “This set of things If it is made, it will be finished in a few days. It is the same even if it is made entirely of rosewood."

"That's okay?"

"It's okay to draw the structure, but the material needs to be changed." Jiang Ye took a pen and scribbled on it, "I have to redesign it."

"It will take a few days to complete." Although Mo Xiaoan is not a member of the Agricultural Committee, he also knows that sweet potatoes cannot be stored for a long time.

"At least a week." Jiang Ye studied the drawings for a long time. "Wang Gong gave us a meeting on the standardization of machinery manufacturing, requiring all kinds of professional processing equipment to be manufactured in a standardized manner, with unified materials and process flow. The complete set of sweet potato processing equipment is definitely no exception. So it has to be redesigned. Materials, performance, and other aspects You have to think comprehensively, and you can’t just start from saving materials blindly. In addition, you need a prime mover. Otherwise, you won’t be able to carry the machine. Don’t believe this hype pamphlet—a lot of it is to fool the leaders.”

"I'll apply for a steam engine, just bring a boiler."

"No need, just apply for a single-cylinder diesel engine. This set of equipment can be driven with 10 horsepower. Don't think about steam engines and boilers now-there is a shortage of riveters, and Billy Zhou and his apprentices are building ships. When will there be Empty boilers are still a question mark.”

"Diesel, don't apply for diesel—" Mo Xiao'an was hesitant, diesel is a very precious thing, and when he thought about it with his toes, he knew that it was impossible to get the diesel quota for the project of sweet potato processing.

"It's better to use gas." Jiang Ye began to promote the latest gas generator developed by the Industrial and Energy Commission.

This brand-new gas generator was developed under the leadership of Wang Luobin. The purpose is naturally to use a large number of single-cylinder diesel engines at hand. In addition, the diesel engine factory project he personally presided over is also entering the project implementation stage.

The technical content of single-cylinder diesel engines is very low. With the completion of the supporting workshops of the machinery factory, especially the foundry workshops, the apprentices of Xinshikong are becoming more and more skilled. Manufacturing single-cylinder diesel engines is no longer a fantasy.Compared with the steam engine, the single-cylinder diesel engine has great advantages in terms of size and fuel efficiency, but the disadvantages are also obvious-there is no fuel, whether it is diesel or vegetable oil that can be used as a substitute, the Transit Group is in serious shortage.

In the obvious years to come, neither vegetable oil nor diesel will be abundant, so the gas generator, an artifact of the oil shortage era, has been remembered.

They will never lack coal, and even if there is no coal, straw, wood, charcoal and the like can still be found.Basically, there is no worry about the future, and the gas can be directly used by diesel engines and gasoline engines, as long as the engine is slightly adjusted.In this way, modern vehicles such as agricultural vehicles brought by them can continue to serve them after installing a gas generator until the Transit Group can develop oil.

The gas generator will affect the power output of the engine, but at the end of World War II, Germany also installed it on its half-track armored vehicles. It is said that even the Panther tank, which weighs almost 50 tons, has been installed with a gas generator experimentally. The impact of power isn't too far off.

Wang Luobin designed several different styles of gas generators, one of which is a small one specially prepared for vehicles, and the other is a complete set of medium-sized gas generators specially used for enterprises, which adopts the principle of flat suction.The structure of this kind of stove is more complicated, but it can adapt to low-grade fuel.

(End of this chapter)