How much calcium is there in bone soup? Nutritionist Dr. Du Peng said: When vinegar with the most acceptable acidity is added to bone soup, the calcium content in bone soup is only 5 ~ 10 mg/100 g, which is only the calcium content in fresh milk (80 ~1100g). According to the weight of a bowl of 300g bone soup, the highest calcium content is about 30mg, which is only 1/40 of the daily requirement of pregnant women (1000 ~ 1200mg). In addition, the absorption of calcium needs the participation of vitamin D, and the content of vitamin D in bone soup is very small, which can not effectively convert bone calcium into calcium absorbed by human body.
Although there is a lot of calcium in bones, it mainly exists in the form of hydroxyapatite crystals and is insoluble in water. Although the bone still contains a small amount of amorphous bone salt, the main calcium phosphate, calcium citrate and calcium carbonate are also insoluble in water, so it is difficult to dissolve the calcium salt in the soup.
The concentration of vinegar soup is high, and the detection is feasible.
Calcium acetate can be produced by the reaction between calcium salt and acetic acid. The solubility of calcium acetate at 100℃ is 29.7%, which is feasible in theory. Professor Jiang Zhuoqin's research also confirmed that the calcium concentration in bone soup can even be higher than that of milk and pure vinegar without water. But the practical value of this method is not high. First of all, the soup made in this way tastes terrible; Secondly, a large amount of acetic acid will pollute the air, corrode furniture, and even cause respiratory diseases with volatilization; The most fundamental point is that you have to buy tens of dollars of vinegar to cook a catty of trotters in this way.
Therefore, according to the daily calcium intake of 800 mg recommended by China Nutrition Society, you have to drink dozens of liters when you convert it into bone soup. If you really need calcium, you should eat three meals and drink more milk. Especially for expectant mothers during pregnancy, it is a very good choice to supplement calcium scientifically and effectively, bask in the sun and take calcium agents. It is particularly important to note that some expectant mothers eat a lot of calcium but fail to supplement calcium effectively. In fact, it is not because of calcium deficiency, but because of vitamin D, which is a very important element to promote calcium absorption, especially for pregnant women. To supplement calcium for pregnant women, it is best to choose calcium preparations containing vitamin D3.
Drink soup carefully and supplement calcium scientifically.
As the saying goes, "the chef's soup is the cavity of singing" and "if you want to taste good, you must cook it with soup". The delicacy of soup has existed since ancient times, among which bone soup can be divided into clear bone soup and rich Cooper soup according to its color. The most common bone soup in traditional Chinese food belongs to pig bone soup.
Pig bone soup is white because bone marrow contains a lot of fat. With the boiling of the soup, the scattered tiny fat droplets are wrapped by protein and appear white under the scattered light. Usually, the thicker the white, the more fat (unless there is already a layer of oil floating in the soup).
Fat is the strongest productive substance among the three productive substances, and it can also give people a mellow taste. Coupled with the salt that can excite sodium receptors and the nitrogen-containing extract with fresh fragrance, it is difficult to taste the taste of bone soup. However, for pregnant mothers, it is still necessary to eat less high-fat food. After all, we should strictly control our weight during pregnancy, otherwise it will lead to overweight and obesity during pregnancy, lead to various pregnancy syndromes, increase the incidence of macrosomia and dystocia, and endanger expectant mothers and parturients.
Tips: Bone soup with vinegar can not achieve the effect of calcium supplementation, and the soup also contains a lot of fat, which is not a good method for pregnant mothers and the elderly with hyperlipidemia.