Nacre or Mother of Pearl is a mixture of organic and inorganic materials produced by mollusks as the inner layer of the animal's shell; it is also the material that makes up the surface of a pearl's luster, which is very strong but flexible and has a wide range of vibrant colors. Mother-of-pearl material is generally found in the outer layer of pearls and in the inner layer of the shells of pearl oysters or freshwater pearl mollusks; the inner layer of the shells of many other mollusks also contain mother-of-pearl, for example, the sea gastropods of the genus Haliotidae, the bell snails of the genus Trochidae and the salamander snails of the genus Turbinidae.

Brief introduction

Mother-of-pearl. Mother-of-pearl

Also known as pearl oyster, mother-of-pearl, true mother-of-pearl, mother-of-pearl.

Effects calming the liver and submerging yang, tranquilizing the mind, calming fright and improving eyesight.

English Name Nacre, Mother-of-pearl Effects.

Hanyu Pinyin zhen zhu mu.

Concoction: Remove impurities, crack into pieces and sieve to remove ash.

The properties and flavors are salty and cold. Attributed to the liver and heart meridians.

Medicinal part of the shells of pearl shellfish.

Medicinal effect calms the liver and submerges the yang; tranquilizes the mind and calms fright; clears the liver and brightens the eyes koan.

Functions and IndicationsPeace the liver, submerge the yang, calm the mind, stop bleeding. It is used in treating dizziness, tinnitus, palpitation, insomnia, epilepsy, seizures, epilepsy, vomiting of blood, epistaxis, and hematochezia in women.

Use and Dosage For internal use: decoction, 0.3-1 tael: or into pills, bulk.

It should be avoided if the stomach is cold.

Originally from "Drinking Tablets of New Ginseng" Family Classification: Mussel Family Indications: headache and dizziness; palpitation and insomnia; epilepsy; liver-heat and eye-redness; cataracts obscuring the eyes Harvesting and Storage: can be harvested throughout the year. After fishing the shells, remove the flesh, soil, wash, put into alkaline water to boil, then into fresh water to soak and wash, take out, scrape off the outer layer of black skin, sun-dry or dry.

Pharmacological effects

Mother-of-pearl to the pearl layer of the pearl shell of the Marschalli powder given to rabbits, the calcium ion concentration in the blood, mother-of-pearl and give calcium carbonate after a few differences. Its 30% sulfuric acid hydrolysis product contains: leucine, methionine, alanine, glycine, glutamic acid, aspartic acid and other amino acids, the rabbit's ear shell blood vessels and blood pressure has no effect, but can increase the amplitude of heartbeat of the isolated toad, reduce the isolated rabbit intestinal tension, the rabbit has a transient diuretic effect. The 4N hydrochloric acid extract of pearl layer can inhibit the contraction effect of histamine on the small intestine of isolated guinea pigs. Its ether extract can inhibit the contraction of histamine on the intestinal tube, preventing histamine-induced shock and death of guinea pigs; sensitized guinea pigs to horse serum anaphylactic shock can not be prevented, but allergic to organs, such as the contraction of guinea pigs isolated intestinal tubes, the uterus, there is a tendency to inhibit. Pearl shell powder has an inhibitory effect on mouse sarcoma-180. Pearl layer 30% sulfuric acid hydrolysis product, can make the toad isolated heart beat amplitude increased, so that the rabbit isolated intestinal tube tension is reduced, on the rabbit and has a transient diuretic effect. Acid hydrolysis of ether extract (remove calcium), there is against histamine-induced intestinal tube contraction, and can protect guinea pigs due to histamine-induced shock, in addition to the role of elevated blood pressure. Taurine in the pearl layer of pearl shell, pearl hydrolysate, whole organs (including meat), sperm and egg liquid extract of pearl shell of Mars, 0.5ml/only intraperitoneal injection, bleeding measured by tail clipping method, can shorten the bleeding time of mice, and shorten 51.4% compared with oxytocin; 0.75ml/kg of static injection, significantly enhance the contraction of the rabbit uterus in vivo, the duration of more than 30 minutes, than the duration of the posterior pituitary lobe hormone longer ; 94.1ml/kg intraperitoneal injection, significantly inhibited the spontaneous activity of mice.

Composition of traditional Chinese medicine

Shells mainly contain more than 92% calcium carbonate, 5% organic matter, which is dominated by angiosperm protein, and also contain aluminum, copper, iron, magnesium, sodium, zinc, phosphorus, barium, sulfur, chlorine, potassium, silicon and many other inorganic elements. Shell pearl layer powder contains amino nitrogen 0.35%, its shell hard protein (conchiolin) by threonine (threonine), glycine (glycine), proline (proline) aspartic acid (as mother-of-pearl partic acid), glutamic acid (glutamic acid), alanine (alanine). serine, arginine, leucine, valine, tyrosine, phenylalanine, isoleucine, lysine, histidine. Methionine (methionine), cystine (cystine) and other 17 kinds of amino acids, but also contains three kinds of non-protein hydrolysis products amino acids: taurine (taurine), ornithine (ornithine), serine phosphate (serine phosphate). The inorganic elements in pearl layer powder are calcium, sodium, potassium, magnesium, silicon species. Shell prism (prismjatic layer) layer containing amino acids to glycine, leucine, serine, histidine-based. Mother-of-pearl layer contains amino acids, mainly arginine, glycine, valine, aspartic acid. Also contains phosphorylethanolamine (phosphorylethanolamine), and contains galactosyl ceramide

.2 2. mother-of-pearl shell

Mother-of-pearl layer is mainly composed of shell hard protein and calcium carbonate content of about 92%, organic matter accounted for about 5%, containing aluminum, copper, iron, magnesium, manganese, sodium, zinc, silicon, titanium and other metal elements, containing histidine, arginine, threonine, serine, glutamic acid, glycine, alanine, valine, leucine, cystine, cooline, aspartic acid, phenylalanine, methionine and other 14 kinds of amino acids; prismatic layer (prismatic-calaite layer) hydrolyzed liquid contains serine and glycine, etc.; the pearl layer contains shell hard protein and other proteins, and also contains porphyrin (porphyrin). The pearl layer contains shell hard protein and other proteins, and porphyrin.)

4 Low toxicity drugs

Mother-of-pearl rats gavaged with pearl layer powder LD50 >21.5g/kg, percutaneous administration of mother-of-pearl LD50 >31.6g/kg. pearl layer powder was evenly mixed in the feed, and fed to the newly weaned rats for 2 months, 478ppm dose group and 1,434ppm group were given for 2 months, no effect on body weight gain was seen (P&G). The 478ppm dose group and 1,434ppm group had no effect on body weight gain (P>0.05), but in the 4,300ppm group, there was an effect on body weight gain, and the mean body weights of male rats were significantly lower than those of the control group on the 7th day and 8th week of dosing (P<0.01), except that the mean body weights of males in the 6-week and females in the 8-week periods decreased to varying extents, but the statistical treatments did not show any significant difference. In the 4,300 ppm group, hemoglobin was decreased, serum urea nitrogen was increased, and no abnormality was found in the pathological examination, but it had an effect on body weight gain. According to the Chinese general acute toxicity grading standard, the oral LD50 of rats >5,000mg/kg is practically non-toxic, for this reason, mother-of-pearl should be a low-toxicity drug.

5 Ecological environment

1. Habitat of mother of pearl in the wind and waves of the calmer bays, sediment, rocky reefs or gravel on the bottom of the sea, to the foot of the filaments of the fixed life on the reefs or rocks, to the tidal currents of the smooth, fertilization of the water quality of the sea area growth is better. From the low tide line to the water depth of about 10m are growing, usually in the depth of 5m more. To diatoms as the main food, suitable and growth temperature between 15-30 ℃, spawning period of May-October, the growth rate is faster, generally 2 years shell height can be up to 70mm or so.

2. Inhabiting in the intertidal zone near the low tide line, with the foot silk fixed in the reef seam interstices or coral reefs, and more fixed in the back of the wind and waves at the base of the rock.

3. Mostly inhabits the sea area at a depth of about 20m, and can also be found at a depth of 60m.

4. Habitat and distribution of the same Hepu mother-of-pearl shell.

5. It lives in rivers and lakes with slightly sandy freshwater mud bottom.

6. It lives in the muddy bottom of rivers and lakes, and moves slowly.

7. Lives in the muddy bottom of rivers and lakes.

6 Discussions

Mother-of-pearl

1. Chinese Medical Dictionary: nourishing liver yin, clearing liver fire. Treatment of epilepsy, mother-of-pearl epilepsy, dizziness, tinnitus, heartbeat, chest and abdominal membrane distension, women's blood fever, blood avalanches, pediatric convulsions and spasms.

2. "Drinking Tablets New Senator": calm the liver and submerge the yang, to calm the spirit and soul, to determine the epilepsy, to eliminate the heat plaque, eye cataracts.

3. "Jilin Chinese Herbal Medicine": stop bleeding. Treating hematemesis, epistaxis, and leakage.

4. Chinese Medical Dictionary: This substance (mother of pearl) enters both the heart and liver meridians, different from that of stonecrop but enters the liver meridian, so it is necessary for those who are involved in psychosomatic diseases. Mother-of-pearl-resource distribution

Mother-of-pearl 1. Distributed in Guangdong, Guangxi coast, especially in the Beibu Gulf is more common, Guangxi Hepu highest production.

2. Distributed in guangdong, hainan, guangxi and the xisha islands and other coastal for the breeding of one of the good species of pearl.

3. Distributed in Hainan and Xisha Islands for the tropical subtropical species.

4. Habitat and distribution with the Hepu mother-of-pearl.

5. Distributed in Hebei, Jiangsu, Anhui, Zhejiang and other places.

6. The mother-of-pearl is found throughout the country.

7. Distributed throughout the country. Mother-of-pearl - prescription

①Treatment of rising liver yang, dizziness and headache, blurred eyes, tinnitus, cheeks hot and dry: mother-of-pearl five money to one or two, the system of chaste tree, dry lotus grass three money each. Decocted with water. ("Atlas of Commonly Used Chinese Herbs")

② treatment of palpitations and insomnia: mother-of-pearl five money to one or two, Yuanzhi one money, jujube nut three money, hot licorice one and a half minutes. Water decoction. ("Atlas of Commonly Used Chinese Herbs")

③ Treatment of internal eye diseases (cloudy crystals, optic nerve atrophy): mother of pearl two two, atractylodes macrocephala eight money, ginseng one money. Water decoction, take two times a day. ("Jilin Chinese herbal medicine") Contraindication: caution for those with cold spleen and stomach.

7 Modern Research

7.1 Main components:

Mother-of-pearl contains calcium carbonate, the content of which reaches 80% to more than 90%; it also contains magnesium carbonate, calcium phosphate, keratin and a variety of elements. Keratin of pearl oyster contains glycine, alanine, phenylalanine, leucine, serine, valine, cystine, methionine, arginine, histidine, tyrosine and more than 20 kinds of amino acids. Pearl shell contains trace elements and pearls are basically the same.　

Pearl layer and pearls are mother of pearl shell of the outer coat membrane and the epidermal cells of the pearl capsule secreted by the formation of nacreous, the two luster, color and composition are basically the same.

7.2 Pharmacological effects:

1. Effects on the liver The pearl layer injection of the pearl mussel and folded crown mussel of the Ma's pearl mussel has a protective effect on carbon tetrachloride liver injury, which can reduce hepatocellular damage and accelerate the recovery of ghrelin transaminase.

2. Anti-allergic effect The hydrochloric acid or sulfuric acid hydrolysis products of the pearl layer of Ma's pearl can inhibit histamine-induced contraction of isolated intestinal tubes in guinea pigs. Its ether extract can inhibit the contraction of intestinal tubes by histamine, preventing histamine-induced shock and death of guinea pigs; it has a tendency to inhibit the allergic contraction of isolated intestinal tubes and uterus of guinea pigs.

3. Other effects 30% sulfuric acid hydrolysis product of pearl oyster contains a variety of amino acids (such as methionine, alanine, etc.), which has no effect on the rabbit's ears and shells blood vessels and blood pressure, but it can increase the amplitude of heartbeat of the isolated toad, reduce the isolated rabbit intestinal tension, and have a transient diuretic effect on rabbits. Pearl shell powder has an inhibitory effect on mouse sarcoma 180. Pearl layer injection of galactose saline injection caused by the guinea pig eyes after the injection of crystal produced by the ring turbidity has a certain antagonistic effect. This product contains a large amount of calcium carbonate, oral powder has neutralized gastric acid and astringent effect. Pearl layer powder is often used in hyperacidity and ulcer disease.

With mother-of-pearl powder to mice gavage, can significantly reduce its voluntary activity, and sodium pentobarbital central inhibition has obvious synergistic effect; mother-of-pearl sulfate hydrolysis products, can increase the heartbeat amplitude of the isolated heart; mother-of-pearl injection of carbon tetrachloride-induced liver injury has a protective effect; with the powdered pearl layer of the gastric gavage, the rat stress gastric ulcers have a significant inhibitory effect.

7.3 Clinical studies

It is reported that the treatment of mouth sores caused by different reasons with pearl layer film, 0.5 to 1 minute after applying the film can appear obvious analgesic, anti-inflammatory and promote the healing effect of ulcers (Marine Drugs, 1984, 4:43); the treatment of hemorrhoidal nuclei with mother-of-pearl liquid compression ligation of 313 cases, with a recent effective rate of 100% (Hubei Journal of Traditional Chinese Medicine, 1983, 5:26); the treatment of hemorrhoidal nuclei with mother-of-pearl liquid compression ligation, the recent effective rate was 100% (Hubei Journal of Traditional Chinese Medicine, 1983, 5:26). 1983, 5:26). There are also mother-of-pearl and other treatments for plateau vascular headache, senile cataract, ulcer disease and so on.

8 Morphological introduction

8.1 1.Haplacanthus mother-of-pearl shell

Haplacanthus mother-of-pearl shell, the shell is rhomboid quadrangular, brittle shell, shell length of 50-90mm, width of 18-32mm, the height of the length of the similar height, the larger individual height of up to 100mm or more. The top of the shell is located in front, with ears on both sides, the front ear is slightly smaller than the back ear. The two shells of mother-of-pearl are unequal, the right shell is flatter, the left shell is slightly convex, and the right shell has a conspicuous peduncle depression below the anterior ear. Dorsal margin straight; ventral margin rounded, shell surface light yellowish brown, concentric growth whorl veins very fine and dense, flaky, thin and brittle easy to fall off, the middle of the shell is often worn near the ventral margin of the arrangement of close, extended into a small tongue end slightly cocked, foot filament holes are large, foot filaments in the form of hairs. The pearl layer in the middle of the inner surface of the shell is thick and developed, with very strong pearl luster. Some of the outer coat membrane is stimulated, epithelial tissue fissure dramatically, the formation of pearl capsule, and the continuous secretion of nacreous, before gradually forming pearls. The edge of the inner surface of the shell is yellowish, without nacreous layer. The hinge line is straight, with a protruding main tooth and a long tooth piece along the lower part of the hinge line. The ligament is purplish brown, the anterior superior button muscle scar is obvious and located below the top of the shell, and the closed-shell muscle scar is large, oblong, slightly pointed at the anterior end, and located in the center of the shell slightly near the back.

8.2 2. Mother-of-pearl shell

Shell is irregularly rounded, thick shell, generally shell length 110-150mm, large up to 200mm or so, high and long nearly equal, the left shell is slightly convex slightly larger than the right shell, the top of the shell is located in the anterior dorsal margin and curved forward, the top of the right shell in front of a depression, for the foot filaments out of the pore, the two shell ears are inconspicuous, the surface of the shell is brownish-brown or greenish-brown, the top of the shell is smooth, dark green, the rest of the shell is covered with concentric rings, and the shell is smooth, dark green. Dark green, the rest of the shell is covered with concentric scales, the scales extend to the edge of the shell in a spiny or serrated, the middle scales are often detached, most of them are left with a pale white radial. Inner surface of shell with thick pearl layer, iridescent luster, hinge line straight, toothless, ligaments strong, purple-brown, anterior upper button muscle scar smaller, closed shell muscle scar broad, oblong, slightly gourd-shaped, outer shell margin black, anal membrane with black pigmentation, hypertrophied and broad, with a small protuberance at the tip.

8.3 3. Large mother-of-pearl shell

Shell nearly pentagonal, slightly rounded, solid and heavy shell, adult shell length of more than 200mm, large up to 300mm or more, 4-5kg, is the largest of the pearl shell, shell is slightly flat, the top of the shell is located in the dorsal margin of the anterior end of the front ear is small, no posterior ear. Shell surface scales are irregularly arranged, grayish yellowish brown, radial ribs light brown, old shell scales often fall off, revealing the pearl layer, radial ribs are not obvious. The inner shell is covered with a thick silvery-white nacreous layer, and the marginal part is yellowish brown. The posterior end of the hinge is slightly prominent. Ligament broad and thick, with a notch after shedding. Closed-shell muscle scar broad, of reniform shape, scar surface not smooth, with many transverse lines. Anal membrane tongue-shaped, with a broadly rounded end.

8.4 4. Long-eared mother-of-pearl shell

Shell mother-of-pearl shell nearly square, shell length of 100mm or so, the individual is slightly larger than the Hepu mother-of-pearl, the top of the shell is located in the front, no anterior ear, the posterior ear is longer, into the wing-like protrusion, the right shell is flat, the left shell is slightly convex. The right shell is flat, and the left shell is slightly convex. The scale layer at the edge of the shell surface is thin, and is raised in pieces. Inside of shell with silvery-white pearl layer, closed-shell muscle scar elongated.

8.5 5. Triangle sail mussel

The shell is large and flat, hard, slightly triangular in shape. The left and right shell tops are close together, the dorsal margin is long and protrudes upwards to form a large triangular sail-like hind wing, the anterior dorsal margin is short and sharp-angled. The ventral margin is nearly straight and slightly curved. The shell surface is not smooth, with thick ribbed veins carved on the top of the shell. Growth lines arranged in concentric rings, widely spaced. The inner surface of the shell is smooth and the nacreous layer is creamy white.

8.6 6. Pleated crown mussel

Shell is large, slightly unequal triangular. The anterior dorsal margin of the crown is inconspicuous, the posterior length is high, and the posterior dorsal margin extends upward obliquely into a large shaped crown. The posterior dorsum of the shell has a series of progressively thicker longitudinal ribs from the apex of the fault backwards. Ventral level long and nearly straight. The shell surface is dark yellowish green to blackish brown, with the top of the shell often eroded and losing its surface color. The pearl layer is glossy.

8.7 7. Dorsal horned toothless mussels

The shells are oval in shape with horns, slightly rounded at the anterior end, obliquely cut at the posterior end, and with a curved ventral margin. There are three thick ribbed veins shooting out from the top of the shell on the back. The shell surface is greenish brown. Closed-shell muscle scar long oval. The inner surface of the shell pearly layer is creamy white.

9 Concocting method

1. Mother-of-pearl, take the original medicinal material, remove impurities and gray debris, broken.

2. Calcined mother-of-pearl, take the net mother-of-pearl in a suitable container, heated with fire, calcined until crisp, remove and cool, broken.

3. Pearl layer powder, take the net mother-of-pearl grinding wheel to remove the outer and middle layers, retain the inner layer (pearl layer), immersed in 50 × potassium permanganate sterilization for 30min, and then washed with water, crushed, 130 mesh sieve, water flight, drying, and then crushed, 200 mesh rows of sieve drying can be.

10 identification method

1. triangular sail mussels, complete shell, slightly unequal quadrangular. Shell surface growth of mother-of-pearl whorls arranged in concentric rings. The dorsal edge protrudes upward, forming a large triangular sail-like hind wing. The inner surface of the shell has obvious coat marks: the anterior closed-shell muscle mark is ovoid, the posterior closed-shell muscle mark is slightly triangular. Left and right shells both with 2 anamorphic primary teeth, left shell with 2 elongate lateral teeth, right shell with 1 elongate lateral tooth; glossy. Firm, slightly fishy, tasteless.

Triangle sail mussel and folded crown mussel main difference is: the former is "triangular sail" shape, concentric rings on the shell surface, shell shape is flat, and the two shells are equal, the pearl layer in the shell milky white; and the latter is an unequal triangle, stretching the large "crown", the shell is milky white to pale. The latter is distinguished by an unequal triangular shape, with a large "crown" and a creamy to light blue nacreous layer within the shell. [1]

And the Mastodon pearl has a rhomboidal shell, with a fine concentric growth on the shell surface in the form of flakes; the nacreous layer in the shell has a very strong pearlescent luster, and there is no nacreous layer around the edges for the heterocysts.

2. brown crown mussels, complete shells are unequal triangular, the back of the dorsal edge upward into a large-shaped crown. The inner surface of the shell coat scar slightly obvious; front closed shell muscle scar large, cuneate, after the closed shell muscle scar irregular oval, in the back of the lateral teeth below the longitudinal ribs and concave grooves corresponding to the surface of the shell. Both left and right shells with one short and slightly thick posterior lateral tooth and one weak anterior lateral tooth, neither with a primary tooth.

3. The Hepu mother-of-pearl shell, complete shell is rhomboidal, with a large posterior auricle and a small anterior auricle, the dorsal margin is straight and the ventral margin is rounded, and the growth lines are very fine and lamellar. The closed-shell muscle scar is large, oblong, with a raised, elongated primary tooth.

10.1 Points of identification

The main difference between the triangular sail mussel and the pleated crown mussel is that the former is in the shape of a "triangular sail", with a concentric ring pattern on the shell surface, the shell shape is flattened, and the two shells are equal, and the pearl layer inside the shell is milky white; while the latter is in the shape of an unequal triangle, stretching out in a large " crown", and the pearl layer inside the shell is milky white. crown", with cream to light blue pearl layer, can be distinguished.

And Ma's pearls are oblique quadrangular shell, the shell surface concentric lines of fine growth, flaky; shell pearl layer with a very strong pearl luster, the edge of the pearl layer is no isole.

10.2 Quick Identification

1. Triangle sail mussel: shell large and flat, hard and thick shell, two shells are equal, the shell surface has a concentric ring texture, the back of the dorsal edge of the upward exhibition of a very large triangular sail-like wing; the left shell has two different sizes of the proposed main teeth and two lateral teeth, the right shell also has two proposed main teeth and a large lateral teeth. Inside of shell smooth, nacreous layer creamy white.

2. Folded crown mussel: the shell is slightly like an unequal triangle, the front is short and low, the anterior dorsal edge of the crown is not visible, the back is long and high, the posterior dorsal edge of the back upward slanting out, stretching into a large crown. Shell surface dark yellowish-green to blackish-brown; articulation strong, with a tall posterior lateral tooth on each side of the shell, and weak anterior lateral teeth. Shell inner pearl layer shiny, creamy white to light blue.

3. Pearl mussel: the shell is rhomboidal, shell height and shell length are roughly equal. Shell slightly thin and brittle, the two shells are not equal, the right shell is flatter, the left shell is more convex; shell surface concentric lines grow densely, flaky, thin and brittle, very easy to fall off; shell surface is light yellowish brown, often several black-brown radial lines; the inner surface of the shell pearl layer is well developed, with a very strong pearl luster. Margin yellowish, without pearl layer.

4. ray ray mussel: the shell of the mussel Schistodesmus lampreyanus, family Musselidae.

5. Dorsal horn toothless mussel: the shell of the mussel Anodonta woodiana (Lea.). [1]

11 Nutritional knowledge

Mother of pearl knowledge:

Mother of pearl for the mussel family animal triangular sail mussel, folded crown mussel or pearl mussel family animal Hepu mother of pearl shells, etc., can be harvested throughout the year, fishing shells, remove the flesh, soil, wash, put into the alkaline water boiled, and then put into freshwater immersion wash, take out, scrape off the outer layer of black skin, sun-drying or drying. Mainly produced in Jiangsu, Zhejiang, Hubei, Anhui and other places.

Triangle sail mussel slightly into an unequal quadrangle, shell surface growth whorls arranged in concentric rings. The posterior edge protrudes upward, forming a large triangular sail-like hind wing. The inner surface of the shell is clearly marked by the outer coat, the anterior closed-shell muscle scar is ovoid, the posterior closed-shell muscle scar is triangular, and both the left and right shells are equipped with two primary teeth. Glossy, hard. Gas slightly fishy, taste faint.

Folded crown mussels are unequal and triangular, with the dorsal edge stretching upward into a large crown. The inner surface of the shell is slightly obvious coat scar, anterior closed-shell muscle scar is large into a wedge, posterior closed-shell muscle is irregularly ovoid, there are longitudinal ribs and concave grooves below the posterior lateral teeth, the left and right shells are without the proposed main teeth.

The Hepu mother-of-pearl shell is Yu quadrangular, with a large posterior auricle, a small anterior auricle, a straight dorsal margin, a rounded ventral margin, and a very strong line of growth into a lamellar shape. The closed-shell muscle is large, oblong, with a long raised primary tooth.

The one with large slices, white color, crispy and not broken is preferred.

Mother-of-pearl additional information:

Mother-of-pearl according to the different methods of concocting is divided into pearl drugs away from the private case, calcined mother-of-pearl, after concocting the storage of dry containers, placed in a ventilated and dry place, dustproof.

Mother of pearl suitable for the crowd:

Spleen and stomach cold people should be cautious.

Mother of pearl therapeutic effect:

Mother of pearl taste sweet, salty, cold; to the liver, heart meridian; quality of heavy town subdued;

With the heart of the needle to tranquilize the mind, calm the liver submerged yang, clearing the liver and brightening the eyes.

It is mainly used in treating palpitation and insomnia, epilepsy and seizure, dizziness and headache, liver-heat and redness of the eyes, cataracts covering the eyes, epistaxis and leakage.

Mother of Pearl Usage Guidelines:

1. For those with yin and blood insufficiency, restlessness of the heart and mind, sleeplessness at night, and sometimes palpitations, it can be combined with sour jujube kernel, cypress seed kernel, and ripened dihuang to nourish yin and nourish blood, and to calm and tranquilize the heart and mind.

2. If the heart is overflowing with fire, the heart and mind are restless, and there is insomnia, it can be used together with Huang Lian, Magnetite, and Cinnabar to clear the heart, calm the mind, and tranquilize the spirit.

3. The headache and dizziness of hyperactivity of liver yang can be combined with Crocus sativus, chrysanthemum, tianmu, and shiqing to increase the effect of calming the liver and submerging the yang.

4. If the symptoms of yin deficiency and hyperactivity of yang, can be used with the raw land, white peony and so on.

5. If the eyes are swollen and painful due to the inflammation of liver fire, it can be combined with chrysanthemum, wood sorrel and Xia Gu Cao to increase the effect of clearing the liver, diarrhea and fire to brighten the eyes.

6. If used with atractylodes macrocephala and ginseng, it can be used to treat liver deficiency, blurred vision and night blindness.

The above estimation is useful for those who use the cell phone to access the Internet, with the computer to access the Internet can be found, but still hope to adopt