內容目錄
Experts in this article: Dou Pan, Deputy Chief Nutritionist, Department of Clinical Nutrition, Peking University First Hospital
You must be familiar with the tender and smooth duck blood.
Nanjing duck blood vermicelli soup, Hunan Yongzhou blood duck, Guangxi Quanzhou vinegar blood duck, hot pot, Mala Tang, and even fried duck blood with chives and spinach that every household will make.
It can be said that duck blood is widely liked by the common people!
So, what is the nutritional value of duck blood? What is the difference between boxed duck blood tofu and raw duck blood? Do you understand all this?
What is the nutritional value of duck blood?
In general, duck blood is high in protein, high in iron, low in purine, low in calories, and low in fat, rich in iron, zinc, potassium and other minerals and vitamins.
High Quality Protein
Duck blood is an excellent source of protein. In addition to water, duck blood has the highest content of protein (mainly hemoglobin), and its content is comparable to that of meat. Every 100 g contains 13g~14g of protein. The protein of duck meat It is 15g/100g, therefore, duck blood is also called “liquid meat”.
In addition to its high protein content, duck blood is also of good protein quality.
Accurate data show that: Duck blood has balanced amino acid types and is easily absorbed by the human body; and the essential amino acid content accounts for 42.3%, especially rich in staple food Lysine, threonine and valine, which are easily deficient in .
High Speed Rail
Usually, the iron content of duck blood is above 30mg/100g, even higher than that of pig liver. It is a proper high-iron food.
The iron in duck blood is mainly heme iron, which is absorbed by the human body at a very high rate. You only need about 1 tael of duck blood each time to make up for one day’s needs. iron content.
More importantly, duck blood is not high in calories and fat, it is low in fat and high in proteinprotein, whether it is a fitness party or a Hot pot party can rest assured to eat.
Low Purine, Low Fat
Of course, there are many people who are worried, is duck blood high in purines? Can people with hyperuricemia and gout eat it?
At present, there is no authoritative data on the purine content of duck blood, but we can refer to the purine content of pig blood: every 100g of pig blood contains 40mg of purine, It is speculated that the purine content in blood products The purine content is roughly that of lean meat~ , the content of animal offal (chicken heart, duck liver, pig liver, duck intestine, pig intestine)1 /6~1/7 strong>.
In other words, blood products contain very low levels of purines. Eating about 1-2 taels a day will not significantly increase blood uric acid levels.
Boxed duck blood tofu is better than raw duck blood?
Boxed duck blood tofu is a kind of cooked duck blood. It is a dark red tofu-like lump food formed from fresh duck blood after coagulation, cooking, sterilization, and adding edible glue.
Due to the sterilization process, harmful microorganisms are inactivated, boxed duck blood tofu can be stored at 2~5℃ for 90 days, So,< strong>Not only has a longer shelf life, but also safer and more hygienic.
Will there be “fake duck blood” on the market?
Some unscrupulous merchants mix duck blood with pig blood, cow blood, etc. to make “fake duck blood”. Why is there such a phenomenon?
This is due to the fact that ducks have less blood than cows and pigs, resulting in a relatively high price for duck blood. The larger the amount, the lower the cost of making blood products.
How to pick out blood products made from real duck blood?
Look at labels, look at ingredients
Choose products from regular manufacturers, must look at the ingredient list on the label when purchasing, whether there is only duck blood, without adding ” “Cow blood”, “pig blood”, “chicken blood”.
Look, look, look
Real duck bloodThe surface no pores, the cut surface has pores of different sizes, and the color is dark red. The fake duck blood will show obvious toughness, chopsticks are not easy to be broken, and the size of the pores on the cut surface is uniform.
Of course, some duck blood tofu will add edible gums such as “guar gum” and “arabic gum” to improve the toughness of duck blood. It is easy to be broken by chopsticks, but this does not mean that it is fake duck blood.
Smell, Taste
Real duck blood is tender and smooth, with a bloody smell but no other odors. Fake duck blood will lack elasticity when eaten, like eating a gelatinous substance, without a tender feeling.
Choose regular channels to buy
Many people mistakenly believe that fresh duck blood just slaughtered at the farmers market is fresher and more delicious, but in fact, if the slaughtering and processing process is not standardized, raw duck blood is easy< strong>Contaminated by Salmonella, it may cause fever, abdominal pain, diarrhea, nausea, and vomiting after consumption, and children, the elderly and those with weakened immunity will have more serious illnesses.
Therefore, when buying fresh duck blood, be sure to choose a regular store with better environmental sanitation. If you are really worried, recommended to buy boxed duck blood tofu from a regular brand.
I said that there are so many benefits of duck blood. Tonight, fried duck blood with chives, hairy blood, duck blood hot pot, and duck blood vermicelli soup can all be arranged with confidence!
Finally, here are some cooking tips for duck blood~
(1) Boil the boxed duck blood for two minutes before cooking to remove its fishy smell and taste better after frying.
(2) Boxed duck blood is generally half-cooked, heat frying for about 5 minutes; if it is fresh duck blood, it needs to be heated and fry for more than 10 minutes to be mature.
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