What effect does lotus leaf have on human body?

[Prescription name]: Lotus leaf, lotus leaf, fresh lotus leaf, dried lotus leaf, lotus leaf charcoal, etc.
[English name]: Lotus Leaf
[Medicinal material scientific name]: Folium Nelumbinis.
[Origin] This product is the dried leaves of Nelumbo nuciferaGaertn., a plant of the Nymphaeaceae family.
[Resource distribution]: The medicinal material is produced in most parts of the country.
[Collection and storage]: Harvested in summer and autumn from June to September, dried to 70% or 80%, removed petioles, folded into a semicircle or fan shape, dried, placed in a ventilated and dry place to prevent moth. In summer, leaves or newly born young leaves (lotus money) are also used. Lotus leaf food incompatibility: Lotus leaf is afraid of tung oil, Poria cocos, and silver. Lotus leaves are mostly folded into a semicircle or fan shape, and are quasi-circular when unfolded, with a diameter of 20 to 50 cm, and the entire edge or slightly wavy. The upper surface is dark green or yellow-green and rough; the lower surface is light gray-brown and smooth, with 21 to 22 thick veins radiating from the center to the surroundings, and a protruding leaf base in the center. It is brittle and easy to break. It has a slight fragrance and tastes slightly bitter.
Large, neat and green leaves are preferred.

【Functions and indications】 Clears away heat and relieves summer heat, promotes the clear yang, cools blood and stops bleeding. Used for summer heat and thirst, summer dampness diarrhea, spleen deficiency diarrhea, blood heat and vomiting and bleeding, and bloody stool and metrorrhagia. Lotus leaf charcoal astringes, removes blood stasis and stops bleeding. Used for various bleeding diseases and postpartum blood fainting.

【Lotus leaf preparation method】
Lotus leaf: spray water, moisten slightly, cut into strips, and dry.
Lotus leaf charcoal: Take clean lotus leaves and calcine them into charcoal according to the calcination charcoal method.
"National Compilation of Chinese Herbal Medicines" Lotus leaf charcoal: Take clean lotus leaves, fill them in a calcining pot, cover them with a pot, seal the joint of the two pots with yellow mud, stick white paper on the bottom of the pot, calcine them with fire until the white paper turns brown, and take them out when they are cool.
【Properties】 This product is semicircular or fan-shaped, and is circular when unfolded, with an entire or slightly wavy edge, and a diameter of 20 to 50 cm. The upper surface is dark green or yellow-green and rough; the lower surface is light gray-brown and smooth, with 21 to 22 thick veins radiating from the center to the surroundings; there is a protruding petiole residue in the center. It is brittle and easy to break. It has a slight fragrance and tastes slightly bitter.
[Identification] The powder of this product is gray-green. The upper epidermal cells are polygonal, with papillary or short villi-like protrusions on the outer wall; the stomata are indefinite, and there are 5 to 8 accessory cells. The anticlimax wall of the lower epidermal cells is slightly wavy, and sometimes bead-like thickening can be seen. Calcium oxalate clusters are common, with a diameter of about 40μm.
[Nature and flavor] Bitter, flat.
① "Southern Yunnan Materia Medica": "slightly warm and mild, pungent in taste."
② "Chongyuan Materia Medica": "bitter, mild, non-toxic."
③ "Yilin Zongyao": "bitter, mild, slightly salty." Enters the heart, liver, and spleen meridians.
① "Bencao Qiuzhen": "enters the gallbladder."
② "Bencao Zaixin": "enters the heart, liver, and lung meridians."
③ "Bencao Cuoyao": "enters the foot taiyin and yangming meridians."

【Notes】
(1) Used for symptoms such as summer heat, headache, chest tightness, thirst, and short and red urine. This herb is bitter and mild in nature, with a fresh and fragrant aroma. Fresh herbs are good at clearing summer heat evil. Clinically, they are often used in combination with fresh Patchouli, fresh Perilla frutescens, and watermelon rind.
(2) Used for summer heat diarrhea. Lotus leaves can clear away heat and relieve summer heat, and can also promote spleen yang. For summer heat diarrhea, they are often used in combination with Atractylodes macrocephala and Phaseolus odoratus. In addition, it can be added to spleen and stomach tonifying medicines for patients with spleen deficiency, qi deficiency, and diarrhea.
(3) This product can also be used for various bleeding diseases.

What is the process flow of lotus leaf extract?

Selected raw materials: Select high-quality lotus leaves, remove impurities, and wash deeply for more than three times.

Extract lotus leaf juice: Add raw materials to the extraction tank, and then add 6-8 times the amount of water of the raw materials into the extraction tank, cover the lid and heat it up. Start recording the time when the temperature reaches 95 degrees Celsius, keep warm and extract for 2 hours, filter, add 6-8 times the amount of water to the residue and continue to extract for 2 hours. After filtering, the secondary extract is combined into the extract storage tank for standby use, and reciprocate for 3 times.

Concentrated extract: Pump the filtrate in the storage tank into a single-effect concentrator for concentration, control the vacuum at 0.06-0.08MPa, and the concentration temperature at 60 degrees Celsius-80 degrees Celsius. The filtrate is concentrated to a relative density until it meets the requirements for powder spraying.

Spray drying: control the air inlet temperature at 150-165 degrees Celsius, the air outlet temperature at 65-85 degrees Celsius, adjust the air supply and exhaust volume, control the temperature in the tower at 75-90 degrees Celsius, and the negative pressure at 10-18Pa. Pay attention to adjusting the feed pump pressure and aperture size during powder spraying to reduce the material sticking to the tower.

Crushing and screening: the dried powder is refined and screened to remove block connections to ensure that the powder mesh is qualified.

Product mixing: lotus leaf extract powder and auxiliary material maltodextrin are placed in a mixing tank according to the proportion and fully mixed.

Qualified testing: the product is tested for color, taste, smell, tissue state, impurities, dissolution, net content, moisture, flora, etc.

Finished product packaging: the mixed proportion powder is transferred to the packaging room by pipeline for packaging of specified specifications.

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