1. Nutritional value of dragon fruit

In August 2000, we measured part of the nutritional quality of dragon fruit. The test material pitaya is a red-skinned and white-fleshed variety, purchased from the fruit and vegetable market in Chaozhou City and cultivated locally. Determination method: The soluble solids (TSS) content was measured using an Abbe refractometer; vitamin C (VitC) was measured using the 2,6-dichlorophenol-indophenol titration method [1]; the protein content was measured using the Coomassie brilliant blue staining method, bovine serum The protein is a blank control [2]; the moisture content is measured with a rapid moisture analyzer. The measurement was carried out in the laboratory at room temperature, repeated three times, and the average value was calculated. The measurement results are shown in Table 1.

The measurement results are consistent with those reported by Chen Zhendong et al. In addition, according to Chen Zhendong et al.’s article, every 100g of fresh dragon fruit also contains 0.21~0.61g of fat, 0.7~0.9 mg of fiber, and 0.005~0.012 carotene. mg, Ca 6.3~8.8mg, P 20.2~26.1mg, Fe 0.55~0.65mg, VitB1 0.028~0.430 mg, and the caloric content is only 56.65 calories [3]. It can be seen that dragon fruit is very nutritious and is a low-calorie, high-fiber fruit. In addition, during the cultivation process, the fruit of dragon fruit has not been affected by diseases and insect pests. Therefore, it is worthy of being a harmless fruit. Toxic, pollution-free green food.

2. The health effects of dragon fruit

Because dragon fruit has the above ingredients, it determines the dietary and medicinal effects of dragon fruit. According to the literature [4], the measuring ruler ( The flowers of Hylocereus undatus are medicinal, sweet, light, cool, and fragrant. Clear away heat, moisten the lungs and relieve cough. Treat hot cough, hemoptysis, and cervical lymph node tuberculosis. The stems cure mumps, hernia, carbuncle and swollen poison. Pitaya is a cultivated variety of the Sky Ruler, so its flowers and stems should have the same medicinal effect as the Sky Ruler. We know that dietary fiber is called the seventh nutritional element of the human body. It has the effects of lowering plasma cholesterol, improving blood sugar production response, preventing constipation and colon cancer, controlling weight, reducing estrogen levels, and detoxifying [5]. As a low-calorie, high-fiber fruit, dragon fruit’s therapeutic effects are self-evident. Regular consumption of dragon fruit can lower blood pressure, lower blood lipids, moisturize the lungs, detoxify, nourish the skin, improve eyesight, and is beneficial to constipation and diabetes. With the role of auxiliary treatment, low-calorie, high-fiber dragon fruit is also the most ideal food for those who want to lose weight and maintain their appearance, and can prevent the spread of "urban affluence".