Chapter 491

But it's winter now. There are no other flowers except chrysanthemum and a few cold resistant roses. Although these two kinds of flowers have fragrance, their taste is too common. I'm afraid it's impossible to use fresh flowers as raw materials.

In particular, Shi Xiaorui has been brainwashed by other meanings of chrysanthemum, there is no way to look at chrysanthemum with pure eyes. If you think about someone who exudes the smell of chrysanthemum, you feel that something is not right.

Although Shanxia had no prejudice against chrysanthemum and didn't like the taste of chrysanthemum, she didn't give chrysanthemum a try at all.

Shi Xiaorui's eyes fell on the drawers of herbs in the lobby, and suddenly his eyes brightened.

She grabbed Shanxia's hand: "Shanxia, what do you think of the taste of orange peel?"

"Orange peel?" Shanxia thought, "it's OK. Aren't you going to use orange peel to extract perfume, madam? "

What's wrong with orange peel? Other people have made it into "poor sihexiang", so its taste is recognized.

Besides, orange peel is easier to obtain than litchi peel. Among other things, tangerine peel is a kind of traditional Chinese medicine. There is a big drawer in Shi Xiaorui's Hospital, which is also very cheap.

In fact, if there is one, the taste of orange peel is also good, but oranges sell less and more expensive than oranges, and the cost performance is not so high. It's not too late to replace them when your own technology matures.

Shi Xiaorui also thought of all kinds of spices she had seen in Lu Xun before. Many spices can also be used as medicinal materials, such as cloves, borneol, Angelica dahurica and so on. These are common in her own hospital.

However, tangerine peel is the cheapest. The first test product is tangerine peel!

Determined, Shi Xiaorui began to act.

After spending so long idle time with Lu Xun, Shi Xiaorui found something to do. Without hesitation, she took half of the tangerine peel out of the drawer and took it to the kitchen.

The best way to extract perfume and essence is to extract it, but the problem is that it should choose a suitable solvent to soak the spices directly through the full contact of the solution and spices, so that the aromatic components in the raw materials can be dissolved into the solvent.

Another advantage of this method is that it can extract the flavor of spices to the greatest extent.

Of course, Shi Xiaorui couldn't find this kind of solvent on hand, so she had to take the next step and use distillation.

Because the boiling points of essential oil and water are different, when the raw materials are heated, the essential oil and water begin to evaporate and produce mixed vapor. After condensation, the liquid mixture of water and essential oil can be obtained, and then the essential oil can be obtained by separating water and oil.

All the utensils are ready-made. Just use the one used to extract alcohol. But it's better to use each one. Shi Xiaorui plans to go to the place where she bought this set of tools and order another one.

Dried tangerine peel after drying, in fact, the original flavor has lost some, and certainly no fresh rich flavor, but Shi Xiaorui is not immediately to make a perfect finished product, just use tangerine peel to do a simple experiment, the requirements are not so high.

However, to use distillation method, but also first the tangerine peel bubble hair.

Shi Xiaorui washed the tangerine peel and soaked it in water. In fact, it's very slow to boil it in cold water. Shi Xiaorui can't wait any longer, so she just fished out the tangerine peel and put it on a small stove to heat it. The speed of foaming is really fast.

After the temperature rises, the taste of tangerine peel also exudes. Let alone, although there is no lively fragrance of fresh tangerine peel, the taste of tangerine peel precipitates, which also has its own uniqueness.

Shi Xiaorui kept the tangerine peel in this pot and cooked it for most of the afternoon. Only then did she extract a little bit of essential oil very hard, even the bottom of the small porcelain bottle that was originally intended to contain essential oil was not covered.

And the essential oil just steamed out, but it didn't smell as strong as the smell of the whole kitchen now. Shanxia couldn't help feeling a little disappointed.

Shi Xiaorui is also very strange. It should be said that essential oils should be the essence of all kinds of spices. They taste very heavy. How can they hardly smell them?

Shi Xiaorui thought carefully, and finally from the memory of Bala out of a noun, called mature.

The essential oil extracted as simple as yourself needs a process of precipitation and fermentation, which is called ripening.

Generally speaking, the ripening time is closely related to the temperature. If the temperature is not high now, the ripening time may be longer. However, if the temperature is low, the growth rate of bacteria will slow down. It will be a few days before we know whether we can succeed or not.

So it's better to say that we don't take advantage of the current tools, otherwise we don't need so much trouble.

Shi Xiaorui put away this little hard to get essential oil and planned to find a place with stable temperature for a few days.

She said to Shanxia, "it's OK. I'll see if the fragrance comes out in a few days."

Shanxi's confidence in Shi Xiao Lu is very strong. Shi Xiaorui said he would wait for a few days for a few days. Besides, it takes a long time to make a good wine.

In order to extract the essential oil, it took too long for Shi Xiaorui and Shanxia to come out of the room with the smell of orange. Lu Xilan came to her and asked if she was secretly making something delicious.

Shi Xiaorui can't laugh or cry, but it's normal for children to be greedy. As long as they don't eat snacks, it's nothing to be greedy.

Shi Xiaorui had no choice but to explain to her that she and Shanxia did not secretly eat delicious food without telling her. They also promised to make snacks for her these two days. Only in this way can Lu Xiran be coaxed.

Shi Xiaorui has eaten a lot of delicious desserts in Lu Xun these days. It's not difficult for her to do several kinds of desserts. It's just right that she can make them to satisfy the hunger of several children at home.

At this time, Lu Ming also came back.

Because when Shi Xiaorui came home in the morning, he had already gone to school, so he didn't know that Shi Xiaorui had come back. At this time, he just ran into Shi Xiaorui at the kitchen door, and the little adult's sad face suddenly showed a big smile.

"Mother, you are back!" Lu Ming embraces Shi Xiaorui's waist.

Because there is Lu Xilan at home, Lu Ming has been trying to set an example for his sister. He always tries to keep a mature and steady appearance. Although he is far away from the real mature and steady, he is much more introverted than Lu Xilan, because he feels that he is a big child, and he is very embarrassed that he always rubs in Shi Xiaorui's arms like Lu Xilan.

It's very rare to rush into Shi Xiaorui's arms like this today. Shi Xiaorui immediately hugged him for a long time, rubbing his neat hair a little bit.