Ming Dynasty: Teaching The Prince Dragon-Slaying Skills At The Beginning

Chapter 584: Sea Salt Deficient In Iodine, An Alternative Method Of Supplementing Iodine [Please Sub

Although the work of fishing for salt is called "fishing for silver from clear water", there is also a saying that "there are three hardships in the world, forging iron, drying salt and grinding tofu".

Sun salt is one of the three sufferings!!!

Although the princes Zhu Biao, Zhu Xi, Zhu Fan, Zhu Di and other princes are not considered pampered, it is indeed difficult to persist in such hard work as fishing for salt for a long time.

Therefore, after more than half an hour passed, the enthusiasm of the princes Zhu Biao, Zhu Xi, Zhu Fan, Zhu Di and other princes cooled down, and they sat or lay on the edge of the salt pond to rest with the two little guys Zhu Xiongying and Zhu Jixi.

Then I watched the salt pond workers who were busy coming and going, shoveling piles of small salt mountains onto multi-person bicycles.

It's just that the styles of these multi-person bicycles used to transport sea salt are different from the multi-person bicycles they were standing on before.

These multi-person bicycles used to transport sea salt are not linked to an open carriage at the back, but are three feet wide, three feet high and six feet long. They are wrapped in large wooden boxes for protection and have large glazed boxes embedded inside. car.

The multi-person cargo bicycles filled with sea salt are covered with glass lids, and then workers ride multi-person bicycles to transport the loaded sea salt to another place.

“Where will these packed sea salt be transported to?!!”

Prince Zhu Biao, who was watching this scene, looked sideways at Yan Changqing and asked curiously.

"They will be transported to the sea salt processing plant for final processing."

“We can go check it out!!!”

After saying that, Yan Changqing immediately stood up and sat on his bicycle.

Then in 413, Prince Zhu Biao, Zhu Di, Zhu Fan, Zhu Di and other princes and the two little guys Zhu Xiongying and Zhu Jixi also walked to their original open-top bicycle carriage again, but this time they put a few bicycles on it. A bench allows them to continue sitting and resting.

Prince Zhu Biao, Zhu Di, Zhu Fan, Zhu Di and other princes were not polite about this. They took off their socks and sat on the long bench with bare feet.

In addition, the personal bicycles of Zhu Xiongying and Zhu Jixi were also put up together. Anyway, the bicycles are small and do not take up much space.

The distance between the sea salt processing plant and the multi-story salt pond is not far. If you ride a bicycle, you can reach it in just a few minutes.

After all, considering that in order to facilitate the transportation of sea salt, the sea salt processing plant will not be built too far away from the multi-layered salt ponds.

In the sea salt processing factory, workers poured the previously transferred carts of sea salt into large pools filled with clean water.

Looking at the puzzled looks in the eyes of Prince Zhu Biao, Zhu Di, Zhu Fan, Zhu Di and other princes, Yan Changqing opened his mouth to explain:

"The sea salt you picked up from the multi-layered salt ponds before was coarse salt. It contained a lot of impurities and was not edible yet. It needs to be further processed to become refined salt, which is the kind of snow salt you often eat. , Only then can it be sold for consumption.”

"For example, the step in front of me is filtering!!!"

"Dissolve coarse salt in clean water, and then filter out the (bhbd) first batch of insoluble impurities such as sand, grass and wood chips!!!"

"After filtering out insoluble impurities such as sand, grass and wood chips, continue to filter out the second batch of soluble impurities, such as potassium chloride, magnesium chloride, sodium chloride and other soluble impurity ions."

"As for what soluble impurity ions such as potassium chloride, magnesium chloride, and sodium chloride are, you don't need to delve into it for the time being. It won't be clear for a while. You just need to know that they are impurities that are invisible to the naked eye."

"If you are interested in this, you can come and listen to the relevant chemistry courses after my academy of sciences opens in the future. Then you will have a general understanding."

Prince Zhu Biao, Zhu Fang, Zhu Fan, Zhu Di and other princes who originally wanted to ask what the so-called "potassium chloride", "magnesium chloride" and "sodium chloride" are, heard what Yan Changqing said. Swallowed back his doubts.

Yan Changqing led the princes Zhu Biao, Zhu Xi, Zhu Fan, Zhu Di and other princes, and continued to walk through the filter tanks one after another, introducing as they walked:

"Although impurity ions such as potassium chloride, magnesium chloride, and sodium chloride are invisible to the naked eye, we can separate them based on their different solubility!!!"

"For example, at room temperature (20°C), the solubility of magnesium chloride (54.3 grams) is greater than the solubility of potassium chloride and sodium chloride."

"Therefore, by adding an appropriate amount of water to the mixture at room temperature, most of the magnesium chloride can be dissolved in the water, so that the magnesium chloride can be separated and removed."

"Then according to the characteristic that the solubility of potassium chloride is less than that of sodium chloride below 27°C, an appropriate amount of water is added to the remaining mixture for the second time.

"In this way, sodium chloride can be dissolved in water to obtain crude potassium chloride."

"Finally, the crude potassium chloride is further crystallized and recrystallized to obtain refined potassium chloride."

"Ultimately through this series of filtration, separation, cooking, and purification, we can obtain the so-called best snow salt on the market today!!!"

Yan Changqing stopped at the exit of the final purified snow salt. Countless snow-white and fine sea salts were continuously transported out through human-powered conveyor belts stepped on by feet.

Written in a personal glass Chichen.

At the same time, workers poured bags of sun-dried and ground kelp and seaweed into pieces into the large glass pool, and mixed them with the snow-white and fine sea salt to dye them. A trace of variegated color.

“Sir, why are you pouring those green bits in there?!”

King Qin Zhu Xi looked at the bags of kelp and seaweed powder poured into the sea salt pond and asked with a puzzled look on his face.

Obviously there is no green powder in the snowflake salt they eat.

"Normally refined salt does not contain iodine, or it contains very little iodine and cannot meet the normal needs of the human body."

"The so-called 'iodine' can be understood as the same type of substance invisible to the naked eye as the 'potassium chloride', 'magnesium chloride', and 'sodium chloride' just mentioned.

"If the human body does not absorb enough iodine, it will be prone to iodine deficiency diseases such as hypothyroidism and delayed brain development."

"This method of preparing 'iodine' is not easy. Under current conditions, it is difficult to produce it on a large scale."

"So in order to supplement the missing iodine, the best way is to supplement it by eating other foods that are rich in iodine."

"And what you just saw and poured in is dried kelp and seaweed powder."

"For example, marine plants such as kelp and seaweed, as well as marine organisms such as hairtail, lobster, mussels, oysters, marine fish, jellyfish, and sea cucumbers, as well as vegetables growing in high-iodine soil, are all animals and plants rich in iodine. ”

"This is also the reason why people along the coast of the Ming Dynasty did not suffer from iodine deficiency diseases even though the salt they used to eat did not contain iodine."

"Because the iodine they lack is supplemented by other marine animals and plants they usually eat."

"But other people in the interior of the Ming Dynasty do not have this condition."

"So it is necessary to add kelp and seaweed powder to the sea salt that will be sold inland in the Ming Dynasty. This can supplement the iodine lacking in the refined sea salt from the side.

Yan Changqing pointed to the bags of kelp and seaweed powder and explained.

"Sir, the salt we used to eat didn't contain the kelp and seaweed powder, and we didn't eat much of these marine animals and plants. Are we lacking iodine?!!"

"Will I have the iodine deficiency disease you mentioned?!!"

Jin Wang Zhu Fan looked at Yan Changqing with a worried look and asked.

Yan Changqing shook his head and said:

"Don't worry, at least you won't get iodine deficiency disease."

"In addition to the marine animals and plants mentioned just now that are rich in iodine, the nuts you usually eat include walnuts, pine nuts and other nuts."

“As well as eggs such as eggs, duck eggs, goose eggs, milk products such as milk and goat milk, as well as dairy products such as milk powder, yogurt, cheese, and meat such as beef, mutton, chicken, freshwater fish, and cabbage, Green peppers, spinach, celery and other vegetables, etc.”

"These also contain a lot of iodine substances, so based on your living conditions, you will not be deficient in iodine. After all, your three meals a day do not lack the foods mentioned above."

After hearing Yan Changqing's answer, the princes including Yin Baobiao, Zhu Xi, Zhu Gang, Zhu Di and others breathed a sigh of relief.

PS1: The serial is hot, and we urgently need all the handsome guys, beauties, and big guys to order and customize! I wish all the big guys who make full orders and customizations to get rich overnight, good health, and all the best.

Good luck! Thank you all! I kneel down to all the bosses!