Fire dragon juice with baking soda will change color. Adding alkaline substance baking soda to dragon juice will turn blue, and the stronger the acidity, the deeper the red color; The stronger the alkalinity, the darker the blue color.

nutritive value

Pitaya is nutritious, sweet and juicy, and has unique functions. It contains plant albumin and anthocyanins, which are rare in general plants. It also has the effects of detoxifying, relaxing bowels and promoting digestion.

There is a substance called anthocyanin in dragon juice. Anthocyanins will change with different pH values, and will show different colors when encountering substances with different pH values. Anthocyanin is heat-labile, easily oxidized and decomposed, and it is a heat-sensitive active substance.

The pulp of pitaya contains almost no fructose and sucrose, and the sugar is mainly glucose, which is easy to absorb and suitable for eating after exercise. When eating pitaya, you can scrape off the purple peel with a knife and eat it raw, cold or in soup.