How to obtain high purity 3,4-dihydroxybenzoic acid?

3,4-dihydroxybenzoic acid is a water-soluble phenolic acid found in many fruits, vegetables and Chinese herbal medicine. It is also an organic acid and appears as white to brown crystalline powder. 3,4-dihydroxybenzoic acid is widely used in the medical industry, especially in the prevention of arteriosclerosis, which can play an effective role. Middle-aged and elderly people are the main patients with atherosclerosis. As for infants, young and middle-aged people, they have a higher probability of atherosclerosis. It is recommended to eat some foods that are allowed by doctors and contain 3,4-dihydroxybenzoic acid.

3,4-dihydroxybenzoic acid can also play a beneficial role in our cardiovascular system. Intravenous injection of 3,4-dihydroxybenzoic acid can reduce coronary artery resistance, which lasts for half an hour and will return to the original level after an hour or so. During this process, There will be a slight rise in blood pressure.

When we use 3,4-dihydroxybenzoic acid in animal experiments, the mixture of 3, 4-Dihydroxybenzoic acid and protocatechuic aldehyde can gradually increase the pressure and dilate the blood vessels of lower limbs of animals. However, 3,4-dihydroxybenzoic acid alone could not cause dilation.

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