Plant morphology: vine, about 10m long, covered with yellow-brown bristles. Tri-reversion leaves alternate, stipules peltate and elliptic; The central leaflet is rhombic-ovoid or broadly ovoid, and the lateral leaflets are oblique ovoid, with rough sides and dense back; Stipules peltate, small stipules acicular. Racemes axillary, with dense flowers; Bracteoles ovate or lanceolate; Calyx bell-shaped, calyx teeth 5, upper 2 teeth combined, lower L teeth longer, both inside and outside yellow fur; Corolla butterfly, blue-purple, about 1.5cm long. Pods are linear, 5 ~ 10 cm long, flat and densely covered with long yellow-brown bristles. The flowering period is May-September, and the fruiting period is 8-65438+1October.
Born in shady and humid places on hillside grasslands, roadsides and sparse forests. Compendium of Materia Medica states: Pueraria lobata is cool, flat and sweet, and has the functions of clearing away heat, reducing fire and expelling toxin. Modern medical research shows that puerarin, an isoflavone compound in pueraria lobata, has certain curative effect on hypertension, hyperlipidemia, hyperglycemia and cardiovascular and cerebrovascular diseases. Yam can replenish qi and yin, spleen, lung and kidney. Can be used for treating spleen and stomach weakness, anorexia, lung deficiency, chronic cough, loose stool, frequent urination, nocturnal emission, mental fatigue, etc. Yam contains amylase and polyphenol oxidase, which can obviously promote digestion and stimulate appetite. Patients with radiotherapy and chemotherapy should eat more yam. Yam contains mucus and saponin, which has lubricating and nourishing effects. Patients with chest radiotherapy often suffer from "heat toxin damaging yin", which leads to dry cough with little phlegm and lung lesions.
Yin qi is damaged, and eating more yam can nourish lung yin. The nourishing effect of yam can improve the cellular immune function and is beneficial to the rehabilitation of tumor patients.
Yam can be matched with many foods, such as soft-shelled turtle and yam, which has comprehensive nutrition and enhances the function of tonifying lung and strengthening spleen. The compatibility of Radix Astragali and Rhizoma Dioscoreae can enhance the function of invigorating qi and spleen, and is suitable for patients with spleen deficiency, fatigue and loose stool. The combination of duck meat and yam increases the efficacy of tonifying kidney, strengthening spleen and eliminating dampness.
Yam tonic is not stagnant, neither hot nor dry, but it is rarely used for those who are wet. Yam has a high sugar content, so diabetics should not eat more. Do not add alkali when cooking, so as not to destroy nutrients. Glucocorticoid should not be used with yam. Yam has therapeutic effect on diarrhea caused by spleen deficiency, but the consumption should not be too large. Eating too much yam will promote the deformation of stool.
The dietotherapy formula containing yam is introduced as follows:
Jianpi Zhixie Recipe: It is suitable for chronic diarrhea, dyspepsia, abdominal distension and emaciation caused by spleen and stomach weakness. Millet 100g, raw coix seed 50g, stew porridge until cooked, peel and cut fresh yam 100g, simmer with slow fire and add a little sugar.
Bushen Zhuangyao Recipe: This prescription can be used for symptoms such as soreness of waist and knees, weakness of lower limbs, nocturnal emission, premature ejaculation, dizziness and forgetfulness caused by kidney deficiency, coldness or congenital endowment deficiency. 500 grams of mutton soup until the meat is rotten, add 500 grams of yam into pieces, and simmer with low fire for half an hour, adding seasoning as appropriate.
Yiqi Runfei Prescription: It is suitable for lung cancer patients with deficiency of both lung and kidney, kidney deficiency and senile physical weakness, or shortness of breath, fatigue, dry cough, scanty phlegm, anorexia and emaciation caused by lung radiotherapy. Wash pig lung or sheep lung, cut into pieces repeatedly, and stew in casserole. Add 300 grams of yam, 50 grams of lily, 50 grams of white radish, and cook with the right amount of seasoning.