As for pancreas, it is another kind of composite detergent invented in ancient China containing pig pancreas and plant ash, which is an improved and deep-processed product based on bath beans!

The invention of pancreas: there is a detergent called "bath bean" in the Wei and Jin dynasties, and it has been recorded in Sun Simiao's "Qianjin Yao Fang" and "Qianjin Yifang" in the Tang Dynasty that the dirty blood of the pig's pancreas is washed, the fat is torn off and ground into a paste, and then soybean flour, spices, etc., are evenly mixed, and after natural drying, they become bath beans that can be used for washing purposes.

As for who first thought of using pig pancreas to remove dirt, no one knows until now, but this man must be an extremely intelligent person. In the process of making bath beans, the pig pancreas is ground to enhance the exudation of digestive enzymes contained in the pancreas, and the mixed soybean powder contains saponins and lecithin, the latter has the effect of enhancing foaming power and emulsifying power, which not only strengthens the washing ability, but also moisturizes the skin, so it is also a relatively high-quality detergent at that time.

However, because it was necessary to use a large number of pig pancreas, and it was difficult to obtain this raw material on a large scale in ancient times, bath beans were not widely popularized and could only be used by a few upper-class nobles.

Later, people improved the production process of bath beans, they added sugar when grinding pig pancreas, and replaced soybean flour with sodium carbonate (soda ash) or plant ash (the main ingredient is potassium carbonate), and added molten pig fat, mixed evenly, pressed into a ball or block, this is "pancreas".

The lard melts at 40 °C, and the pig pancreas plays a role in the decomposition of lipase at this time, decomposing the lard into high-grade fatty acids, which are saponified with the subsequent addition of plant ash alkali to produce fatty acid soap, which is the main chemical component of modern soap!

The washing function of pancreas: The pancreas is very similar in chemical composition to today's soaps. Moreover, the types of products with various floral fragrances are even more diverse, such as osmanthus pancreas and rose pancreas...... It is quite similar to today's various soaps with different scents. In addition, due to the presence of lipase and protease in the pancreas, it also has the effect of compound decomposition of dirt, which is very similar to the effect of modern enzyme laundry detergent, which can be called the ancient enzyme low-foam multi-functional detergent.

In addition, put the "pancreas" of fresh pigs, cows, and sheep on the cutting board, add "back to the pot water alkali" to chop and chop evenly, form a round cake of appropriate size, and dry it, which is the "pancreas". But this pancreas has a strange smell, which is very unpleasant, and the washing effect is not ideal.

The "goose pancreas" mentioned in "Dream of Red Mansions" is a pancreas made of "goose oil" and water alkali, which is a very precious treasure. When this kind of pancreas is made, add a little salt, and some water will be precipitated, and the quality will be relatively better.

As for the electrolysis of table salt, sodium hydroxide is obtained, which is commonly known as caustic soda or caustic soda, and then it reacts with grease and water, which can be used to make soap on a large scale, which is the main process of making soap in modern times.

This method will be talked about later, the difficulty is indeed a bit too great, first of all, how to generate electricity for electrolysis is a big difficulty, and there are other technical problems that I don't know can not be solved at one time!

So many methods of producing soap also make the guy confused, think about the head is about to get bigger, just these raw materials are very headaches, or start with simple and easy to use first, and then talk about it, and then earn enough money in the future, and then recruit enough people, first popularize the basic chemical knowledge, and then let them do it themselves!

At present, the situation can only be like this, and the guy decided to make some simple bath beans and low-grade soap first. As for how to upgrade and improve the formula, this topic is a bit too big for the guy, so it will be handed over to a special person to study later.

As long as someone researches it and has a certain applicable value, the guy doesn't mind giving a heavy reward, because science and technology are the primary productive forces, especially in ancient times, they can be profoundly reflected!

Research and research, the guy still decided to prepare a pig pancreas, this thing is still easy to find, the guy went to the street to a butcher surnamed Zhang to buy one, and agreed to keep it for himself as much as possible if there is goods in the future, you can cooperate with him for a long time!

After buying it home, in order to be able to smell fragrant, the guy also added some spices, pounded it into a cake shape with ash and then dried it in a cool place, and prepared to use it himself first to see what the specific effect is!

When it is time to use, cut the corresponding part according to the amount of clothing at the time of use, cut more clothes, and cut less clothes when there are fewer clothes.

The guy first scrubbed on the soaked clothes, especially his underwear was also washed hard, the effect of the trial was very good, and there was a fragrant smell after drying, Mo said that this "pig pancreas" is still very easy to use, and it smells good! This oil-based soap can also be widely used for bathing, washing the face, and can even play a role in moisturizing and nourishing the skin, which is simply the best pioneer product currently introduced to the late Han market!