What is the method used to detect whether there is oil in peanuts?

with toilet paper. Put the peanuts together with two pieces of paper and squash them, and if the moment you flatten the peanuts, there will be fat on the peanuts.

Peanuts can't be without oil.

Because peanuts themselves are oil crops, peanuts have no oil, just like sugarcane has no sucrose, do you think it's possible?

If you want to choose peanuts that are low in fat, go and buy some fresh, frozen products that are relatively low in fat.

Identification of fats in peanuts.

1. Fat identification steps:

Material: Peanut seeds (soaked for 3-4h), cut the cotyledons into thin slices to obtain the ideal flakes.

Drop 2-3 drops of Sudan staining solution on thin slices.

De-float to make a temporary film.

Observation: Locate the fat droplets of the material under a low magnification microscope, and then switch to high magnification for observation.

Conclusion: The small particles of round fat in the cells have been stained orange.

2. Key points for the success of the experiment:

Fat identification experiment: choose fat-rich seeds, peanut seeds are the best (soak for 3h and 4h before the experiment).

The key to the success of this assay is to obtain an ideal lamella containing only a single layer of cells.

Stain the staining solution for 2-3 minutes, and the time should not be too long, in case other parts of the cells are stained.

This is the ...... method used for biological testing

You can also take a small portion of peanuts and press the ...... with your fingernails on white paper

The best way to detect oil peanut varieties is Haihua No. 1 and Fenghua No. 1.

What is the oil yield of peanut belt clearing?

The oil yield of peanuts depends on the humidity of peanuts, pinming and oil extraction methods, generally 36%-46%, the oil yield of the traditional pressing method is low, the oil yield of the cold pressing method is relatively high, and some businesses use the chemical soaking method, the oil yield will be higher. At present, 50% of peanuts in China are used for oil extraction, and peanuts for oil are mainly indexed with fatty acid content and high oil content. At present, the varieties planted in a large area in China generally have an oil content of about 50%.

As an oil variety, the oil content is about 55%, and the yield is slightly higher than that of similar promoted varieties, such as Haihua No. 1 crude fat Fenghua No. 1 Huayu No. 22, Luhua No. 11 and Luhua No. 9 Huayu.

What are the peanut varieties with high oil yield?

1. Ocean Flower No. 1.

Gaoxiang Township, Haiyang County, Shandong Province, used Linhua No. 1 Baisha 171, which was cross-bred. After testing and large-scale planting in various places, it has the characteristics of drought resistance, lodging resistance, high yield, wide adaptability, and stress resistance.

2. Fenghua No. 1.

Peanut is a strong growth of a number of new peanut varieties introduced into the experimental base in recent years, with a large yield, stable yield, high oil yield, new varieties of large kernel peanuts, 50 fruit results per plant, as many as 80, double bean fruit accounts for 95%, the yield per mu can reach about 500 kg, and the growth period is about 135 days (10 days later than the ordinary one).

3. Huayu No. 22.

The advantages of peanuts: drought tolerance, cold resistance, suitable for red soil, sandy, tidal soil cultivation, and high seed setting rate, full grains, thin shell, heavy weight, the average fruit yield of 200-300 grams, the oil yield is 20% higher than that of ordinary peanuts.

4. Luhua No. 11.

Large yield, stable yield, wide adaptability, medium fertility yield of about 400 kg per mu, high yield cultivation of 500 kg mu, kernel yield rate of 73%, crude fat content of 52%, crude protein content of 28%, oleic acid and linoleic acid ratio.

There are two more convenient inspection methods at home: one is to smell the smell, use a chopstick or a small spoon, point one or two drops and place them in the palm, rub them until the palm is hot, and smell them before you get them to your nose, you can smell the strong peanut fragrance and mix it with flavor.

At first, there is a slight peanut fragrance, but as you rub it again, the peanut flavor will become weaker and weaker. Doped and.

It can be identified by the second freezing method, adjust the refrigerator freezer to about 10, and put the oil in for 10 minutes, pure.

Half of it will begin to solidify, mixed with a large amount.

The peanut oil almost only has a slight coagulation at the bottom.

In addition, when buying peanut oil, you should first check the product label. Real peanut oil should only have "peanuts" in the ingredient list, and attention should be paid to the production process used. Peanut oil is a food, and fresh is the best.

If the peanut oil is left for a long time, the fragrance will gradually fade until it disappears, and the acid value will also rise

Increase, taste deteriorates, nutrients are destroyed. In addition, if several kinds of "peanut oil" are put into the pot and heated, the peanut oil that smokes first must be of the worst quality. The color of high-quality peanut oil basically does not change with the increase of temperature, and the taste is still smooth and mellow after high temperature.

I just squeeze oil, but it's not peanut oil, it's rapeseed oil, it should be the same, the pressed pure vegetable oil is dark in color and has a strong fragrance.

The density of peanut oil is large, and you can use a strip of rag that you don't use, drop a drop, and immediately wash down the impurity.

Summary. Hello, glad to answer for you. Smell it.

You can use a chopstick or a small spoon, point one to two drops of peanut oil in the palm of your hand, rub until the palm is hot and then take it to the nose to smell, pure peanut oil can smell the rich fragrance of peanut oil, but although the peanut oil mixed with flavor begins to have a slight peanut fragrance, but with rubbing again, the fragrance will become weaker and weaker.

Hello, glad to answer for you. Smell it. You can use a chopstick or a small spoon, point one or two drops of peanut simple fiber oil in the palm of your hand, rub it until the palm is hot and then take it to the nose to smell, sell the pure peanut oil can smell the rich peanut oil fragrance, but although the peanut stool oil mixed with the flavor begins to have a slight peanut fragrance, but with the rubbing again, the fragrance will become weaker and weaker.

Freeze it. After leaving the oil in the freezer of the refrigerator for about 10 minutes, half of the pure peanut oil has begun to solidify, the peanut oil mixed with a large amount of soybean oil only slightly solidifies at the bottom, and the oil mixed with palm oil has been carefully solidified.

Do you have any other questions? I'm glad to continue to answer for you I hope the above is helpful to you If you are satisfied with me, please give a thumbs up

How to judge the stool to rot and break the peanuts with oil in them:

According to the method of identifying fat, the thick peanut pants are placed on white paper and rubbed or squeezed to leave oil stains, indicating that peanuts contain fat.

Therefore, the answer is: put peanuts on white paper and leave oil stains after rubbing or squeezing, indicating that peanuts contain fat.

The best way to identify peanut oil is to look at its species, its color, smell its fragrance, taste its taste, and test its properties.

1. Look at the species

First of all, we can use the ingredient description on the packaging of pure peanut oil products to observe whether it contains the adulteration of other oils. At the same time, it is necessary to check the process identification from the outer packaging to see whether it is a pure physical pressing process. In addition, you should try to buy regular brands in regular stores, which can better ensure the quality of pure peanut oil.

2. Look at its color

Because the oil production process of high-quality peanut oil is a physical pressing process, that is, the production process does not undergo chemical leaching, but completely relies on physical pressure to separate the oil, so it is golden red in color, close to the natural primary color of peanuts.

3. Smell its fragrance

Due to the use of physical pressing process, the natural original fragrance of peanuts can be better retained in peanut oil. Therefore, high-quality pure peanut oil has a mellow and rich peanut original fragrance.

4. Taste the taste

High-quality pure peanut oil has a relatively pure taste, with the original fragrance of peanuts, and there are no other miscellaneous flavors.

5. Check its properties

Pure peanut oil will show a coagulated or semi-coagulated state below 12 degrees Celsius, and we can use this method to simply check the purchased products.

How to eat peanut oil best

1. French fries

Peanut oil can be used to fry French fries, usually when you need to prepare an appropriate amount of peanut oil, in the preparation of 3 to 4 pieces of potatoes, after washing them, peel off the skin, and then cut into uniform strips and soak in milk for 20 minutes, after taking out, add an appropriate amount of edible salt, mix and marinate for half an hour, and then put them in the refrigerator for two hours.

Put the prepared peanut oil in the oil pan and heat it, wait until the oil temperature rises to 80% hot, and then put the frozen fries directly into the oil pan and fry them until the surface is golden brown, and drain the oil to eat.

2. Stir-fry

Peanut oil can also be used to stir-fry vegetables in daily life, and then when you use it to stir-fry, you should first put the peanut oil in the wok and heat it for a while, then put in a small amount of edible salt, and continue to heat for 30 seconds, so that you can remove the aflatoxin in the peanut oil, and then put in the chopped green onions, fry with your favorite vegetables after staring at the fragrance, stir-fry quickly, add your favorite seasonings during the frying process, and wait for the dishes to be cooked directly out of the pot.

3. Baking

Peanut oil can also be used to make a variety of baked goods, especially when making egg yolk crisp and bread and peach crisp, you can add an appropriate amount of peanut oil, which can not only make the baked food crispy and delicious, but also make its aroma particularly strong, and the taste and taste will be particularly good.