Can blanching remove purines?

Blanching is a common culinary pretreatment method that involves briefly immersing ingredients in boiling water, followed by rapid cooling, to remove certain undesirable components or improve texture. Purines are water-soluble substances, so during the cooking process—especially during blanching—they can be partially removed from ingredients through the combined effects of heat and water dissolution. This is particularly important for patients with hyperuricemia and gout, as controlling purine intake helps reduce the risk of gout attacks.

However, the effectiveness of blanching depends on various factors, including the type of ingredient, blanching duration, and the amount of water used. For example, when meat is blanched, purines dissolve into the water, but this process can also cause the meat to become drier, so time and temperature must be carefully controlled. Vegetables naturally contain lower levels of purines, and blanching is less effective at reducing purine content than it is with meat, although it can help remove certain antinutritional factors such as oxalic acid.

Blanching can remove some purines, but its effectiveness is limited. For patients with gout or hyperuricemia, it is also necessary to combine dietary control and medical guidance to comprehensively manage purine intake and maintain good health.