1. Detoxification and protection of stomach wall; 2. Anti-aging, prevent brain cells from degenerating, and inhibit the occurrence of dementia; 3. Whitening and skin care; 4. Lose weight, lower blood sugar, moisten intestines to relieve constipation, prevent large intestine, prevent colorectal cancer, etc. Pitaya juice is sweet and delicious. Besides fresh food, it can also be used for brewing wine, canning and making jam. Flowers can be dried and made into vegetables, and their colors can be extracted from food pigments.
Pitaya, also known as immortal fruit and auspicious fruit, has high economic value and integrates fruit, flowers, vegetables and medicine. It is not only edible for fruits, but also has high nutritional value and delicious taste, and has become a new and excellent green health food.
Pitaya has unique requirements for environmental conditions. It can be planted in shallow hills and mountains with no pollution and convenient irrigation and drainage.
Pitaya is divided into three categories: red skin and white meat, red skin and red meat and yellow skin and white meat. Due to the variety and geographical differences, there are many names. In Taiwan Province Province, red meat pitaya includes Lotus Red Dragon, John Lone, Rose Red Dragon, Xianglong, Xianglong, Zhu Long and Tianlong. White meat varieties are often called white honey, fairy honey fruit and white meat dragon fruit. In other Asian regions, it is usually called red pitaya and green pitaya. In English-speaking countries in Central America or Spanish and Portuguese-speaking countries, all cactus fruits are called pitaya or pitaya, and pitaya is pitaya.
Pitaya has an excellent effect on human health, because it contains plant albumin and anthocyanin, rich vitamins and water-soluble dietary fiber, which are rare in general plants. Albumin is a viscous colloidal substance, which has detoxification effect on heavy metal poisoning. Due to the neglect of environmental protection, various water resources are polluted by heavy metals, and the content of heavy metals in drinking water and food exceeds the standard. However, when albumin meets heavy metal ions in the human body, it will combine with them and then be excreted, which plays a role in detoxification. So eating pitaya rich in albumin can avoid the absorption and poisoning of heavy metal ions. Albumin also has a protective effect on the stomach wall. Moreover, the albumin in the flowers, fruits and stems of pitaya is excellent and stable, and the polymerization of these albumin constitutes the main component of cactus mucus.
Pitaya also contains a more special ingredient-anthocyanin. Grape skins, red beets and other fruits and vegetables all contain anthocyanins, but the content of anthocyanins in pitaya is the highest, especially in red meat fruits. It has antioxidant, anti-free radical and anti-aging effects, and can also improve the prevention of brain cell degeneration and inhibit the occurrence of dementia. At the same time, pitaya also contains vitamin C for whitening skin and rich water-soluble dietary fiber with the functions of losing weight, lowering blood sugar, moistening intestine and preventing colorectal cancer.
Cut it open and peel it off. You can eat it. Eating is a bit like bananas. Pitaya is a low-sugar fruit with beauty beauty effect, which is very suitable for women to eat.
1. Nutritional value of pitaya
In August 2000, some nutritional qualities of pitaya were determined. The test material pitaya is a red-skinned and white-fleshed variety, which was purchased from Chaozhou fruit and vegetable market and cultivated locally. Determination method: The content of soluble solids (TSS) was determined by Abbe refractometer. Vitamin C(VitC) was titrated with 2,6-dichlorophenol indophenol [1]; The content of protein was determined by Coomassie brilliant blue staining, and bovine serum protein was the blank control [2]. The moisture content is determined by a rapid moisture analyzer. The determination was carried out at room temperature in the laboratory, repeated three times and averaged. See table 1 for the determination results.
The results are consistent with those reported by Chen Zhendong and others. In addition, according to Chen Zhendong and others, every 100g of pitaya fruit also contains 0.2 1~0.6 1g of fat, 0.7~0.9 mg of fiber, 0.005 ~ 0.0/kloc-0.2 mg of carotene and 6.3 ~ 8.8mg of calcium.
2. The health function of pitaya
Because pitaya has the above components, it determines the dietotherapy and medicinal functions of pitaya. Literature [4] records that the flowers of pitaya have medicinal value and are sweet, light, cool and fragrant. Clearing heat, moistening lung and relieving cough. It can be used for treating cough, hemoptysis and cervical lymph node tuberculosis. Stem cures parotitis, hernia and carbuncle. Pitaya is a fruit cultivation variety with a measuring ruler, so its flowers and stems should have the same curative effect as the medical measuring ruler. As we know, dietary fiber is called the seventh nutrient element in human body, which has the functions of lowering plasma cholesterol, improving blood sugar production reaction, preventing constipation and colon cancer, controlling weight, reducing estrogen level, detoxification and so on [5]. As a fruit with low calorie and high fiber, the dietotherapy effect of pitaya is self-evident. Regular consumption of pitaya can lower blood pressure, reduce blood fat, moisten lung and detoxify, beautify and improve eyesight, and has an auxiliary treatment effect on constipation and diabetes. The pitaya with low calorie and high fiber is also the most ideal food for people who want to lose weight and beautify, which can prevent the spread of "urban rich disease".