Because oxalic acid is very soluble in water, just blanch spinach in boiling water for 1 minute and fish out, you can remove more than 80% of the oxalic acid. Stir-fry the tofu first, then put in the blanched spinach, and mix it in without a problem.
The saying that spinach and tofu should not be eaten together has become a well-known, household rule through the decades. However, based on the results of research over the years, it can be determined that spinach and tofu is not only an excellent blend, and is a perfect match for calcium and bone health.
Spinach and tofu with meals, green and white embedded, colorful and delicious, but since the study found that spinach contains a large amount of oxalic acid, which affects the body's absorption of calcium, the evaluation of spinach will be a drop in the bucket. Tofu contains more calcium, and spinach cooked with spinach, spinach in the oxalic acid will also be combined with calcium in the tofu into calcium oxalate, can not be absorbed by the body, so spinach boiled tofu this dish is also a big loss of color.
People know that calcium is closely related to acid-base balance. In the protein food intake excess, acid-base balance imbalance, the body's calcium excretion will increase. At this time, if you can eat more green leafy vegetables, such as spinach, you can fully intake of potassium and magnesium, to help maintain the acid-base balance, reduce the number of calcium excretion, on the bone health is very beneficial. 100 grams of spinach containing potassium 311 mg, containing 58 mg of magnesium, in the vegetables in the forefront, is the Fuji apple potassium content of 2.7 times, magnesium content of 11.6 times. With the abundance of potassium and magnesium in spinach, the calcium in tofu can stay in the body better.
What's more, the vitamin K in spinach has the powerful effect of promoting bone calcium formation. Vitamin K is one of the hotspots of nutritional research in recent years, and it is an essential component in the formation of osteocalcin. Vitamin K is mainly found in green leafy vegetables and vegetable oils, and spinach is one of the vegetables with the highest content, second only to kale, with a content of 415 micrograms/100 grams. Survey data suggests that a daily intake of 109 micrograms or more of vitamin K in middle-aged and older women can reduce the risk of fracture by 30%. It has also been demonstrated that a daily supplement of 200 micrograms of vitamin K has the effect of maintaining and improving bone density. That means you can achieve this effect by eating just under 100 grams of spinach a day.
Studies have shown that if you add vitamin K to your calcium supplementation, it can greatly increase the effectiveness of the supplementation and promote the deposition of calcium into the bones. Tofu, which is rich in calcium and protein, and spinach, which is rich in potassium, magnesium, and vitamin K, are a perfect match for calcium and bone health.