What is Rou Gui?
(scientific name: Cinnamomum cassia Presl
), which is also called Cinnamon
, is a medium-sized tree of the family Lauraceae, with gray-brown bark. Inflorescences axillary or subterminal. Flowers white, perianth lobes, filaments pilose, flat, anthers ovoid-oblong, ovary ovoid. Fruit elliptic, dark purple when mature, glabrous, shallow cup-shaped receptacle. The flowering period is June-August, and the fruiting period is October-December.
Cinnamon, the name of traditional Chinese medicine. Cinnamon is pungent, sweet and hot, warming and nourishing, dissipating, thick and pure yang. Go into the kidney meridian, slowly invigorate kidney yang and tonify fire to support yang or induce fire to return to the original. Go into liver, heart, spleen meridian, subdue cold chronic cold and expelling cold to relieve pain, warming meridians and promoting blood circulation to dissipate blood stasis. It is not as good as aconite to help yang, and it is generally not used to restore yang to save adversity. It is good at nourishing yang and eliminating yin, slowly tonifying kidney yang, and bringing fire back to the source.
Types of Cinnamon
White Bud Cinnamon
White Bud Cinnamon, also known as black oil osmanthus, the new buds and twigs are light green; the leaves are small and drooping, the petioles extend horizontally, and the leaves on both sides of the main vein of the old leaves are upturned; the total stalk of the inflorescence is shorter and more fruity; The oil layer in the phloem is black, with a clear boundary with the non-oil layer, and the quality of cassia bark is better. Except for the seedling stage, this variety needs more light and is more drought-tolerant.
The improved Cinnamon variety was introduced from Vietnam in the mid-1960s in my country's Guangxi, Guangdong and Yunnan provinces. It grows well and bears normal fruit. The shape of Qinghua cinnamon is similar to that of domestic varieties, except that the leaves are larger and the color of the young leaves is redder. It has strong adaptability to temperature and is a cinnamon variety with strong cold resistance.
Hainan introduced trial planting from Sri Lanka in the early 1960s, and then Fujian, Yunnan, Guangxi and other places successively introduced successfully. Ceylon Cinnamon leaves are gray and hairless on the back, and the inflorescences have silky short hairs. The bark is thick and thick, and the inner bark is thinner, brownish red. my country's tropical and subtropical regions are suitable environments for the introduction of Ceylon cinnamon.
Red Bud Cinnamon
Red Bud Cinnamon, also known as butter cinnamon, has red buds and young leaves; the leaves are large and the petioles are curved upwards. The total stalk of the inflorescence is longer and the florets are sparser. The amount of fruiting is less, and the fruit is also small. The oil layer of the phloem is yellow, and the quality of cassia bark and cassia oil is poor. This variety grows fast and is not drought tolerant.
Growth environment of Rou Gui
Rougui is native to China, and now it is widely cultivated in tropical and subtropical regions of Guangdong, Guangxi, Fujian, Taiwan, Yunnan and other provinces, especially in Guangxi. There are also places from India, Laos, Vietnam to Indonesia, but most of them are artificially cultivated.
Rougui likes warm climate and is suitable for frost-free environment in subtropical regions. The most suitable temperature for growth is 26-30°C. Plants start to grow when the monthly average temperature is above 20°C, and grow slowly below 20°C. See frost damage. Cinnamon likes humidity and avoids stagnant water. It requires abundant rainfall and a relative humidity of more than 70%. However, too much rain will cause root rot and leaf rot; in areas that are too dry, the growth potential of the plants is poor. Cinnamon is a semi-negative tree species, and the requirements for light vary with the age of the tree. Cinnamon likes acidic or slightly acidic soil, and grows well on yellow and red loam with a pH value of 4.5-6.5.
Processing methods of Rou Gui
Collection and processing
Rou Gui is mostly stripped in autumn and dried in the shade.
Remove impurities, scrape off rough skin, and pound into small pieces.
Rou Gui TCM
The dry bark of the plant.
Spicy, sweet, hot in nature.
Return kidney, spleen, heart, liver channel.
Rou Gui has the effects of tonifying fire and supporting yang, igniting fire and returning to its origin, dispelling cold and relieving pain, and warming the meridians.
For impotence and cold uterus, cold pain in the waist and knees, dyspnea due to kidney deficiency, rising from deficiency yang, dizziness and red eyes, cold pain in trusted subordinates, vomiting and diarrhea due to deficiency cold, abdominal pain due to cold colic, and dysmenorrhea.
1. "Taiping Huimin Heji Bureau Prescription" Shiquan Dabu Decoction: nourishing qi and blood, nourishing the heart and calming the nerves. Indications for overuse and wasting, lack of breath, wheezing when moving, guilty heart and palpitations, dry throat and lips.
2. "Taiping Huimin Heji Jufang" Ginseng Nutrient Soup: Warming and tonifying qi and blood, mainly treating deficiency of qi and blood, cough due to fatigue, lack of food and nocturnal emission, weakness of ankles and knees, persistent sores and ulcers, metrorrhagia in women, etc.
Oral administration: decoction, 1.5-3g; or make tea.
External application: decocted in water to wash eyes or soaked in vegetable oil for ear drops.
People with bleeding tendency and pregnant women should use it with caution. It should not be used together with red stone fat.
Rou Gui is in the shape of a trough or a roll, with a length of 30-1000px, a width or diameter of 3-10px, and a thickness of 0.2-20px. The outer surface is gray-brown, slightly rough, with irregular fine wrinkles and laterally protruding lenticels, and some gray-white markings can be seen; the inner surface is reddish-brown, slightly flat, with fine longitudinal lines, and oil marks when scratched. Hard and brittle, easy to break, uneven cross section, brown and rough outer layer, reddish brown and oily inner layer, with a yellow-brown line between the two layers. The aroma is strong, sweet and spicy.
1. "Shen Nong's Materia Medica": It is mainly used to control upper Qi and cough, block Qi and throat numbness, spit and inhale, sharpen joints, and nourish the middle and Qi.
2. "Bie Lu": main heartache, hypochondriac, hypochondriac pain, warming tendons, dredging pulse, relieving restlessness, sweating. Main temperature, benefit liver and lung qi, cold and heat in trusted subordinates, cold disease, cholera tendons, headache, lumbago, stop saliva, cough, nasal congestion; can abort abortion, strengthen joints, unblock blood vessels, and relieve deficiency; promote hundreds of medicines, no dreaded.
Rou Gui benefits
Sedation and analgesia
Rou Gui contains cinnamon aldehyde, which has anti-excitement and analgesic effects. Because cinnamon aldehyde acts on the central nervous system, it inhibits the activity of neurons to achieve sedation and analgesia.
Replenishing fire and strengthening yang
Rou Gui tastes pungent and sweet, and is very hot in nature. It has the effect of tonifying fire, strengthening yang, and igniting fire to return to the original. It can be used for cold palace, cold pain in waist and knees, and asthma due to kidney deficiency.
Promote blood circulation and stimulate menstruation
Rou Gui contains a lot of cinnamon oil. This kind of oil has a certain volatilization effect and also has the effect of stimulating menstruation, which can cause uterine congestion and promote menstruation.
Rou Gui side effects
1. Since Rou Gui contains safrole, which has certain carcinogenic effects, long-term use of cinnamon may increase the risk of cancer.
2. Rou Gui is not suitable for patients with burning symptoms such as sore throat or toothache, otherwise the symptoms will be aggravated.
3. Rou Gui also has a certain effect of promoting blood circulation, so it is not suitable for pregnant women.
Rou Gui uses
The bark, leaves and "Osmanthus fragrans" (early fruit) of Rou Gui all have a strong cinnamon flavor, among which osmanthus is the strongest, followed by pedicel, bark and leaves. Branches, leaves, fruits, and pedicels can be used to extract cinnamon oil. Cinnamon oil is the raw material for the synthesis of important spices such as lauric acid. It is used as a raw material for cosmetics, as well as ingredients for chocolate and cigarettes. Aromatics, etc., and have antiseptic effect. Cinnamon powder is usually used in western countries to bake bread, snacks, and marinated meat products.
Because of the different parts of the medicine, the names of the medicinal materials are different. The bark is called Rou Gui, the branches are called cinnamon branches after cross-cutting, the twigs are called osmanthus, the petiole is called osmanthus, the fruit holder is called osmanthus cup, the fruit is called osmanthus, and the first fruit is called osmanthus or osmanthus. Gui buds. Cinnamon has the functions of warming the middle and invigorating the kidney, expelling cold and relieving pain, and can treat cold pain in the waist and knees, stomach pain due to deficiency and cold, chronic indigestion, abdominal pain, vomiting and diarrhea, and amenorrhea due to cold. Guizhi has the functions of sweating and relieving muscles, warming the meridians, and treating exogenous diseases, wind-cold, shoulder, arm, and limb pain. Guizhi decoction has significant antibacterial effects on Staphylococcus aureus, Salmonella typhi and Mycobacterium tuberculosis. Guizi can cure stomach pain due to deficiency and cold.
How to take Rou Gui?
When Rou Gui decoction is taken orally, the usual dosage is 2-5g, and it should not be decocted for a long time.
Soak in water
Put the Rou Gui into the container, add an appropriate amount of boiling water and brew it for drinking. It has the effect of promoting blood circulation, dispelling cold and relieving pain.
Cinnamon Brown Sugar Tea
3-6 grams of cinnamon, 12 grams of brown sugar, boiled and drunk, can cure women's postpartum abdominal pain. Before menstruation, use 3 grams of cinnamon, 9 grams of hawthorn meat, 30 grams of brown sugar, and drink it in decoction, which can cure abdominal distension and pain during menstrual cramps. Note that the right amount of water can be boiled for three to five minutes.
Lamb Cinnamon Soup
Add cinnamon when stewing mutton, and then eat meat and drink soup, which can warm the middle and invigorate the stomach, warm the waist and knees, and treat abdominal cold and flatulence.
When Rou Gui is used externally, grind it into powder and apply it or soak it in wine and rub it on the affected area.
How to choose Rou Gui?
1. Looking at the appearance, it is better to have a complete shape and no mildew. The thicker the skin, the better.
2. Look at the color, the color of high-quality Rou Gui is reddish brown
3. Look at the brand, the cinnamon made by regular manufacturers will be more beautiful, the size is basically the same, and the two ends are slightly rolled up.
The newly produced Rou Gui has a strong aroma without scraping. The longer the cinnamon tree grows, the more precious the peeled cinnamon bark is, and it will not deteriorate for a long time, so it has a high collection value. Aged cinnamon is stored for a long time, and the surface is easily oxidized, so some surfaces will be off-white. This is not moldy and deteriorated. Just scrape the inner skin lightly, and dark brown oil will come out and the aroma will be strong. It is good cinnamon.
1. As for the place of origin, Guangxi has the largest Rou Gui production in China. According to historical records, the earliest cinnamon was planted in Guangxi.
2. Ask about the year. The cinnamon produced by regular manufacturers has a uniform harvesting standard. It will not be peeled if it does not reach the harvest year. The cinnamon is harvested at least 10 years old, and the product that is peeled from the tree that has not reached the age The effect difference is several times to several times.
The traditional Chinese medicine Rou Gui is the bark peeled off from the cinnamon tree. Its main component is cinnamon oil. The higher the oil content, the better the quality. It cannot be seen directly with the naked eye, so we need to scrape the inner skin surface with nails or other hard objects. The quality of cinnamon with purple oil color is good, and the quality of cinnamon without oil is relatively poor.
Rou Gui is something to eat, and the taste is very important. High-quality cinnamon has a spicy taste and a sweet taste, the sweeter, the better. Less impurities, smooth taste, no dross feeling, the best quality.
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