First of all, apples have many colors according to their varieties. There are pink greens, that is, apple greens, reds, crimson reds and yellows. Wait a minute. That depends on what color apple you make.
First, please refer to the method of green orange.
Making material
Four fresh oranges (green), copper sulfate powder,
Glacial acetic acid, 5% formalin solution (or 70% alcohol), glass
Glass rod, electric stove, enamel basin, thermometer
manufacturing process
1. Preparation of green solution: Add 50% copper sulfate powder.
Aqueous glacial acetic acid solution (add 5 mouthfuls of glacial acetic acid into 5 mouthfuls of water),
Stir with a glass rod until the solution is saturated to obtain the stock solution.
use
2. Color protection treatment of oranges: take one part of the above stock solution and add it.
Add four parts of water and heat it in an enamel basin, because the oranges are tender and tender.
Soft, so the temperature should be controlled between 6 o and 80℃ and heated.
In this process, you should turn the orange upside down, add a _ to react, and constantly observe the orange peel.
Small change. When the orange peel changes from green to yellow, and then from yellow
The color turns brown, and finally from brown to green, yes
Pick up the orange from the color protection solution, and wash the color protection solution with clear water (note: it takes a long time to change the orange peel, so don't worry):
3. Bottle storage: fix the orange after color protection in glass.
Put the tablet into a specimen bottle and add 50% formalin to dissolve it.
Immerse in liquid, and seal the bottle with wax for preservation.
Second, please refer to the color preservation method of red plants.
2. How to keep the specimen red?
Preparation of fl 1 stationary solution: 40% Fu 4ml.
Ermalin solution, 3g boric acid, 400ml water.
(2) Preparation of preservation solution: 20ml 40% 40%.
Sulfuric acid, log boric acid. 580ml water.
(3) Preservation method: soak red fruits.
Soak in fixed solution for 1-3 days until the fruit changes.
Take it out when it gets dark. Aim the syringe at the fruit.
Inject a small amount of preservation solution into the solid and fix it.
In the preservation solution, the fruit gradually returns to its original color.
This method can also prevent the specimen from rotting.
For red and green fruits, such as cut fruits.
Red watermelon, red pepper. Or plant red.
Color the roots and stems, such as carrot B and red-skinned sugarcane.
Can be soaked in a mass concentration of 0.05g/n-a ~
Copper sulfate solution is about 10 days, when the specimen.
Change it from red to brown. Rinse and transfer to a container.
The mass concentration of sulfite is 0.0 1 ~ 0.02g/ml.
The acidic solution is kept in the sample bottle.
Third, please refer to the color preservation method of yellow plant fruit (persimmon).
F 1 1 preservation solution preparation: 30ml 6%% sulfite.
Acid. 30 ml of glycerol, 40 ml of 95% alcohol and
Water.
F2 1 preservation method: soak the specimen in 5% solution.
Soak in copper sulfate solution for 65438 0-2 days, and clean the sample.
After cleaning, put it into preservation solution for preservation. if
To make fruit specimens, before soaking, the fruit should be
Inject a small amount of preservation solution. If the sample is yellow
Persimmon color. You can put the specimen in 5% first.
Soak in copper sulfate solution for 1-2 days and rinse.
Cleaning, then soaking in 0.2% sulfurous acid aqueous solution,
And can be stored for a long time by adding a small amount of glycerol.
The color protection of soaked fruit specimens, especially those with many colors, such as an apple with several colors, such as green, yellow, red and so on, is a big topic. I also hope that other experts can provide some good methods.
Although I personally want to do some experimental research in this field and have the conditions to do it, this kind of research is not my current work direction. Even if I try, it won't do any good. I can neither publish papers to get professional promotion help, nor get any economic rewards. Even in 2009, how long I can work in this Bird Company is unknown. Haha, so I can only give you such help.