First, the basic introduction of purple sweet potato
Purple potato is also called black potato, and its meat is purple to deep purple. Besides the nutrients of common sweet potato, it is also rich in selenium and anthocyanins. In recent years, purple potato is very popular in international and domestic markets, and its development prospect is very broad.
Purple sweet potato is rich in selenium and anthocyanin besides the nutrients of ordinary sweet potato. Anthocyanin can prevent and treat 100 diseases, and is known as the seventh essential nutrient after water, protein, fat, carbohydrates, vitamins and minerals. Anthocyanin is the most direct, effective and safest free radical scavenger for preventing and treating diseases and maintaining human health. Its ability to scavenge free radicals is 20 times that of vitamin C and 50 times that of vitamin E. Purple sweet potato will become one of the main raw materials of anthocyanin.
Second, the efficacy and function of purple sweet potato
1. Anticancer
Purple sweet potato is rich in selenium and iron, which is an essential element for anti-fatigue, anti-aging and blood-enriching. In particular, selenium is known as the "king of cancer", which is easily absorbed by human body and can remain in serum, repair myocardium, enhance immunity, eliminate free radicals in the body, inhibit DNA synthesis and the division and growth of cancer cells, and prevent the occurrence of cancer diseases such as gastric cancer and liver cancer.
2. Promote gastrointestinal peristalsis
? Purple sweet potato is rich in cellulose, which can increase the volume of feces, promote gastrointestinal peristalsis, clean up mucus, gas accumulation and corruption in intestinal cavity, discharge toxic substances and carcinogens in feces, keep defecation unobstructed, improve digestive tract environment and prevent gastrointestinal diseases.
3. It is beneficial to lose weight.
Eating purple potato will not only make you fat, but also help you lose weight, keep fit, prevent sub-health, relieve constipation and detoxify. Every 100g of fresh purple sweet potato contains only 0.2g of fat, which generates 99 kilocalories of heat energy, which is about 1/3 of that of rice. It is a good food with low fat and low heat energy, and it can effectively prevent sugar from transforming into fat, which is conducive to weight loss and bodybuilding.
4. Enhance immunity
Purple sweet potato contains a lot of mucin, which can prevent the atrophy of liver and kidney connective tissue, improve immunity and prevent collagen disease. The minerals contained in purple sweet potato play a very important role in maintaining and regulating human functions. Calcium and magnesium contained in it can prevent osteoporosis.
Third, the nutritional value of purple sweet potato
Besides the nutrients of common sweet potato, it is also rich in selenium and anthocyanins. Purple sweet potato is rich in nutrition and has special health care function. It contains about 20% of protein, and contains 18 kinds of amino acids easily digested and absorbed by human body, including 8 kinds of vitamins such as vitamin C, B and A, and 10 kinds of mineral elements such as phosphorus and iron. It contains a lot of anthocyanins and has high medicinal value. Dr. Masquerel, a French scientist, discovered that anthocyanins are powerful natural free radical scavengers. Anthocyanin can prevent and treat 100 diseases, and is known as the seventh essential nutrient after water, protein, fat, carbohydrates, vitamins and minerals.
Anthocyanin is the most direct, effective and safest free radical scavenger for preventing and treating diseases and maintaining human health. Its ability to scavenge free radicals is 20 times that of vitamin C and 50 times that of vitamin E. Anthocyanin has a small molecular structure and is the only substance that can scavenge free radicals through the blood-brain barrier to protect brain cells, and at the same time, it can reduce some harm of antibiotics to human body. Purple sweet potato will become one of the main raw materials of anthocyanin.
Purple sweet potato has high cellulose content, which can increase the volume of feces, promote gastrointestinal peristalsis, clean up mucus, gas accumulation and corruption in intestinal cavity, discharge toxic substances and carcinogens in feces, keep defecation unobstructed, improve digestive tract environment and prevent gastrointestinal diseases. Zinc, iron, copper, manganese, calcium and selenium in purple potato are all natural, and the content of iron and calcium is extremely high. Selenium and iron are essential elements for anti-fatigue, anti-aging and blood-enriching, and have good health care functions. Selenium is also the "king of cancer", which is easily absorbed by human body, effectively stays in serum, repairs myocardium, enhances immunity, eliminates free radicals that produce cancer in the body, inhibits the synthesis of cancer DNA and the division and growth of cancer cells, and prevents the occurrence of diseases such as gastric cancer and liver cancer.
Purple sweet potato stem tip leaves are rich in vitamins, protein, trace elements, edible fiber and soluble non-oxidizing substances. Regular consumption has the functions of losing weight, bodybuilding, fitness and cancer prevention. Therefore, black potato has good health care function from the tender leaves at the tip of the stem to the potato pieces, and it is the first health care food among pollution-free, green and organic foods at present.
Fourth, matters needing attention
Purple potato and banana can be eaten together, but not in large quantities, which is easy to cause diarrhea.
Purple sweet potato contains anthocyanins for many years, so the boiled water will appear color. If there is no color, there is something wrong with this purple potato and it is not recommended to eat it.
Purple sweet potato will produce toxins after germination or mildew, which is not suitable for eating.
Bananas have a strong intestinal smoothing effect, and sweet potatoes have a strong flatulence effect. It is best to eat these two kinds of food separately, and strictly control the amount when eating together. Eating a small purple potato and a banana will not cause gastrointestinal problems, and eating a lot will easily cause diarrhea. Purple potato can be eaten as a staple food, and bananas are best eaten as fruit after meals.
Taboo crowd: people with damp-heat in spleen and stomach and stagnation of qi and food should eat carefully.
Suitable for people: the general population can eat it.
Pilgrims: Purple Potato+Persimmon: Gastrorrhagia or Gastric Ulcer?
Five, the basic introduction of bananas
Banana (scientific name: Musa Nana? Lour。 ) a plant belonging to the genus Musa, also refers to its fruit. Widely cultivated and eaten in tropical areas. Bananas are delicious and nutritious, which can be harvested all year round, and are also highly valued in temperate regions. The plant is a large herb, which emanates from the rhizome and forms a pseudostem with a height of 3 ~ 6 meters (10 ~ 20 feet) from the lower part of the leaf sheath. The leaves are oblong to oval, and some of them are 3 ~ 3.5 meters long (10 ~1.5 feet) and 65 centimeters wide (26 inches), 10 ~ 20 cluster tops. Ear drooping, extracted from the top of pseudostem, with many flowers and light yellow; The fruiting sequence is out of order, and the result is 10 ~ 20 strings, about 50 ~ 150. Plants die after fruiting, and the sucking roots growing on the rhizomes continue to reproduce, and each plant can survive for many years. Native to Southeast Asia: it is cultivated in Taiwan Province, Hainan, Guangdong and Guangxi.
Six, the main value
1. Dietary value
Banana is a kind of beneficial fruit rich in starch. Sweet and cold, it can clear away heat and moisten intestines and promote gastrointestinal peristalsis, but it is not suitable for diarrhea due to spleen deficiency. According to the principle of "heat is cool", it is most suitable for people who are hot and dry. People with hemorrhoid bleeding and people with hot and restless fetus can eat raw banana meat.
The folk prescription is more effective to treat chronic cough with banana stewed rock sugar; Cook wine with bananas as a diet. Modern medicine believes that banana can cure hypertension, because it is rich in potassium, which can balance the adverse effects of sodium and promote the growth of cells and tissues. Banana can be used to treat constipation because it can promote gastrointestinal peristalsis.
Eating a banana at breakfast, lunch and dinner can provide rich potassium for human body, thus reducing the risk of cerebral thrombosis by about 2 1%.
German researchers say that using bananas can cure depression and emotional anxiety because it can promote the brain to secrete endorphins. It can relieve tension, improve work efficiency and reduce fatigue.
2. Nutritional value
? Banana is a high-calorie fruit. According to the analysis, the calorific value of pulp per100g reaches 9 1 calorie. Bananas are also the main food in some tropical areas. The nutritional value of banana pulp is quite high. Every 100g pulp contains 20g of carbohydrate, 0.2g of protein/kloc-0 and 0.6g of fat. In addition, it also contains a variety of trace elements and vitamins. Among them, vitamin A can promote growth and enhance resistance to diseases, which is necessary to maintain normal fertility and vision. Thiamine can resist beriberi, stimulate appetite, help digestion and protect nervous system; Riboflavin can promote the normal growth and development of human body. Bananas not only stabilize serotonin and melatonin, but also contain magnesium, which can relax muscles, so friends who are often stressed at work can eat more.
? Banana pulp is sweet and soft, and it is one of the favorite fruits. Europeans call it "happy fruit" because it can relieve depression. On the basis of bananas, creative and cultural fruits have emerged to help people create happiness. And bananas are also the favorite fruit for women to lose weight. Bananas are also called "fruits of wisdom". Legend has it that Buddha Sakyamuni got his wisdom by eating bananas. Bananas contain phosphorus, which is called "the salt of wisdom", and are rich in protein, sugar, potassium, vitamins A and C, and also rich in fiber, so they are very good nutritious foods. Every100g of banana pulp contains more than 15% of sugar, 0.2-0.3% of acid and 1.5% of protein, and is rich in 53 mg of phosphorus, 19 mg of calcium, 400 mg of potassium and 24 mg of vitamin C. Banana also contains.
Bananas are rich in potassium and magnesium. Potassium can prevent blood pressure from rising and muscle spasms, while magnesium can eliminate fatigue. Therefore, bananas are the first choice for patients with hypertension. Pantothenic acid and other ingredients contained in bananas are the "happy hormones" of the human body, which can relieve psychological stress and depression, and the happy creative and cultural fruits are inspired by this. Eating bananas before going to bed also has a calming effect. Dutch scientists believe that the most nutritious fruit that can add a smile to people's faces is bananas. Be happy if you can!
Vitamin A contained in bananas can enhance the resistance to diseases and maintain normal fertility and vision. Thiamine can resist beriberi, stimulate appetite, help digestion and protect nervous system; Riboflavin can promote the normal growth and development of human body. Bananas also have the functions of promoting gastrointestinal peristalsis, relaxing bowels, moistening lung and relieving cough, clearing away heat and toxic materials, helping digestion and nourishing. Bananas are easy to digest and absorb, and can be eaten with peace of mind from children to the elderly, and supplemented with balanced nutrition. Bananas are low-calorie foods that can be enjoyed even by people who are losing weight.
3. Medicinal value
? Chemical composition: the fruit contains starch 0.5%, protein 1.3%, fat 0.6%, sugar 1 1%, ash 1%, vitamins a, b, c, e, etc. It also contains a small amount of 5- hydroxytryptamine, norepinephrine and dihydroxyphenylethylamine. Leaves contain a small amount of tannin and cellulose 1 1.55%.
Indications: clearing away heat and toxic materials, promoting diuresis to reduce swelling, and preventing miscarriage.
Whole grass: used for epidemic encephalitis B, leucorrhea, and fetal restlessness; External use for treating carbuncle and furuncle, erysipelas and otitis media.
Banana peel or fruit stalk: hypertension.
? Usage and dosage: 50 ~ 200 grams of fresh products. Appropriate external use, fresh products mashed or mashed in the affected area. To treat otitis media, take the stem juice and drop it into the ear.
Excerpt: National Compilation of Chinese Herbal Medicine
4. Pharmacological effects:
The pulp contains a lot of norepinephrine, 5- hydroxytryptamine and dihydroxyphenylethylamine.
The content of 5- hydroxytryptamine in bananas produced in Japan is 10 ~ 15 μ g/g According to the determination, the content of norepinephrine in bananas produced in Uganda is 2 μ g/g, and the content of 5- hydroxytryptamine is16.2 μ g/g. ..
Eating 10 mg of serotonin every day has no obstacle to gastrointestinal function, but eating too much may lead to gastrointestinal dysfunction. Bananas should not be eaten when determining indole or catecholamine in urine.
Immature banana meat can prevent (take it at the same time) or treat (take banana meat after taking butazone 15 days) the gastric ulcer induced by butazone in guinea pigs. It also has protective effect on gastric ulcer induced by forced immobility in rats, but it is ineffective for patients induced by prednisone. This protective effect may be due to the reduction of gastric acid by 5- hydroxytryptamine and the relaxation stimulation of banana meat. It has no anticholinergic effect and no central inhibitory effect.
The juice of banana leaves and stems (containing 5- hydroxytryptamine, but not dopa or norepinephrine) can contract the isolated ileum of guinea pigs and duodenum of rats, and increase the blood pressure of dogs and rats. These effects can be antagonized by atropine and tolazolin.
? The methanol extract of dried leaves and stems has antibacterial effect; The water-soluble part of methanol extract from ripe banana pulp has the effect of inhibiting fungi and bacteria. The antifungal substance may be Musarin.
Seven. Suitability and taboo
1. The right crowd
Bananas prolong life, suitable for all ages, and are the first choice for dieters. It is suitable for patients with fever, dry mouth and polydipsia, laryngeal cancer, dry stool, hemorrhoids, anal fissure, hematochezia, cancer and after radiotherapy and chemotherapy. Suitable for patients with upper digestive tract ulcer, tuberculosis and intractable dry cough; Suitable for people who drink too much and still have alcohol; Suitable for people with hypertension, coronary heart disease and arteriosclerosis; At the same time, it has a good effect on constipation, indigestion and other symptoms; Suitable for people with fatty dysentery and toxic dyspepsia.
2. People who are uncomfortable
(1) people with deficiency-cold constitution.
Bananas are cold. People with weak constitution had better avoid it, such as stomach cold, deficiency cold and nephritis. Do not eat bananas. If these patients eat bananas, it is not good for their health. There are also patients with swollen feet during pregnancy, and it is best not to eat bananas.
(2) People on an empty stomach
Bananas can promote gastrointestinal peristalsis. If you eat on an empty stomach, your stomach will work ahead of schedule. Eating bananas on an empty stomach for a long time is bad for your health. Because there is almost no digestible food in the stomach on an empty stomach, eating bananas on an empty stomach will speed up the movement of the stomach, promote blood circulation, enhance the load on the heart, and easily lead to myocardial infarction.
(3) Arthritis patients and diabetic patients
Bananas with high sugar content will slow down blood circulation and accumulate metabolites. Arthritis and diabetes patients should not eat bananas, otherwise it will aggravate the condition.
(4) Patients with nephritis
Patients with nephritis are also not allowed to eat bananas, because bananas contain a lot of potassium and magnesium, and the filtration function of patients with nephritis is relatively poor. Bananas can make the proportion of calcium, potassium and magnesium in blood unbalanced, thus promoting the aggravation of kidney diseases, so patients with kidney diseases had better not eat bananas.
Eight, with bananas.
1. Banana+watermelon: can cause diarrhea.
2. Banana+yogurt: It will produce carcinogens.
3. Banana+taro: It will cause bloating.
4. Banana+sweet potato: It will cause physical discomfort.
5. Banana+yogurt: Eating together is easy to produce carcinogens.
6. Banana+potato: Eating together will cause long spots on the face.
7. Banana+sweet potato: Eating together will cause physical discomfort.
8. Banana+taro: Eating together will cause gastrointestinal discomfort and pain.