Does the nutritional content of donkey milk change much after freezing?

Last time we talked about buffalo milk. Recently, the new coronavirus epidemic has caused some people to think of various foods that claim to boost immunity. Among the rare milks, donkey milk has this legend, so today we will first talk about donkey milk.

First of all, let's take a look at the ** of donkey milk.

On a certain treasure, a certain brand of liquid fresh donkey milk** is 600 yuan for 8 bottles (a bottle of 240ml), compared with milk (5 yuan 250ml), this ** is not low. Most people who are willing to spend a lot of money on these products do so for health or other health reasons.

So, does ** high, does it mean that the nutritional value is also high? Those who have gone to middle school know that the quality of commodities is affected by factors such as market supply and demand, the degree of shortage of commodities, and the human labor required for commodities.

Let's start with the production of donkey milk. For example, a Jiangyue donkey with the strongest milk-producing capacity has an annual milk production of 100 kg [1], which is more than an order of magnitude worse than the common dairy cows, Jersey cows (3,500 kg per year) and Chinese Holstein cows (6,000 kg per year). Therefore, donkey milk is indeed rare and expensive.

At present, there is more donkey milk powder on the market, and less fresh donkey milk. In order to maintain the active ingredient in it, fresh donkey milk is transported by freezing it. It is understandable that the transportation cost of transporting raw milk from Xinjiang to the mainland under frozen conditions is considerable.

Then let's take a look at the nutrient content of donkey milk.

After all, they are all milk, which must contain fat, protein, and carbohydrates. However, the three major nutrients of donkey milk do have a bit of a unique composition [2], and it is quite different from cow's milk.

It has a high lactose content (6 7g 100g). Whereas milk only has lactose content.

It is relatively low in protein (. Whereas commercially available milk is the protein content.

It has a lower fat content (. Whereas commercially available whole milk is the protein content. Donkey milk is only equivalent to the fat content of semi-skimmed milk (low-fat milk). About half of its fatty acids come from saturated fatty acids.

However, some foreign studies have shown that donkey milk has more omega-3 fatty acids than cow's milk, accounting for 7% of its total fat content, mainly alpha-linolenic acid. The ratio of omega-3 to omega-6 is 1:4 higher than that of most meat and dairy products[3].

Due to its low protein and fat content, donkey milk looks thinner than cow's milk and does not taste as mellow as whole milk. However, the characteristics of low protein and high lactose are somewhat similar to human breast milk.

Perhaps because there are fewer dry goods, most of the vitamin and mineral content in donkey milk, including calcium, is lower than that of cow's milk. Foreign data show that the calcium content of donkey milk is 63 mg per 100 grams, which is about 60% 70% of cow's milk, but higher than that of people.

After the donkey milk is frozen, his loss will be great, because some of our commonly used milk and other things, if he is frozen, its protein 60 will be very serious, and he will generally be refrigerated for a preservation and refrigeration and low-temperature sterilization.

Before drinking donkey milk, it needs to be heated to 62 65 in a special pasteurizer and kept for 30 minutes for sterilization, and the cooled donkey milk also needs to be heated in 70 warm water to drink better. It is best to keep fresh donkey milk in an environment of 2 5 to prolong the shelf life of donkey milk.

1. Correct sterilization.

It is best not to drink donkey milk directly, although its composition is relatively close to human milk, but after all, it is animal milk, which may contain substances that are not conducive to human digestion, and it is best to put it in a special pasteurizer to heat it to 62 65 and keep it for 30 minutes for sterilization. The temperature of donkey milk should not exceed 70, otherwise it will destroy its composition.

2. Drink correctly.

It is best to drink donkey milk in advance, and follow the principle that the temperature should not exceed 70. You can put fresh donkey milk in 70 warm water to heat it, although the water temperature reaches 70, but the water temperature will gradually drop, and the donkey milk temperature is relatively slow, the temperature after heating will not exceed 70, and there will be no sudden increase in temperature leading to the destruction of donkey milk nutrients.

3. Store it properly.

Fresh milk is best stored in an environment of 2 5 years, and the storage time of donkey milk will be relatively prolonged. But it is best to drink fresh donkey milk, whether it is opened or unopened, because fresh donkey milk is different from processed yogurt, it has no added preservatives in it, and the shelf life is very short.

1. After the breast milk is thawed, there is milky white dregs, which is a normal condition. After the breast milk is thawed, milky white residue appears, the level of the condition is the level of human fat, the top layer is milk fat, the next layer is whey, if before giving it to the child, shake the glass bottle gently.

2.There is precipitation after donkey milk is frozen, mainly because there are a lot of particles in donkey milk, in fact, these particles are also its nutrients, so there will be precipitation after charging.

60% of the protein in donkey milk is whey protein, which will cause a large amount of whey protein to agglutinate and precipitate, become difficult to digest and absorb, and may also lead to indigestion or diarrhea in serious cases, so it is not advisable to add acidic drinks such as fruit juice to donkey milk, and it is recommended to drink acidic after 1 hour after drinking donkey milk.

Summary. Donkey milk is generally the most effective to drink after boiling in a milk pot, because after boiling, it can eliminate the bacteria in donkey milk, and donkey milk can usually play a role in lowering blood lipids and can also enhance the body's immunity.

Donkey milk is generally the most effective to drink after boiling in a milk pot, because after boiling, it can eliminate the bacteria in donkey milk, and donkey milk can usually play a role in lowering blood lipids and can also enhance the body's immunity.

Donkey milk is generally the most effective to drink after boiling in a milk pot, because after boiling, it can eliminate the bacteria in donkey milk, and donkey milk can usually play a role in lowering blood lipids and can also enhance the body's immunity.

Precautions: 1. Prepare about 70 warm boiled water first, and then pour donkey milk powder.

2. The water temperature should not be too high, which will destroy the original nutrients and taste of donkey milk.