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Zhu Zi

Factory directly wholesale Zhu Zi, Zhuzi, Cranberry & Cranberries fruit for sale

What is Zhu Zi?

Zhu Zi, which is also called Cranberry or Cranberries fruit, the name of traditional Chinese medicine. It is the seed kernel of Castanopsis sclerophylla (Lindl.) Schott., Cyclobalanopsis myrsinifolia (Blume) Oersted or Cyclobalanopsis glauca (Thunb.) Oerst. of Fagaceae. Castanopsis bittern is distributed in the south of the Yangtze River; Qinggang small-leaved is distributed in south-central, southwest and southern Shaanxi, Jiangsu, Anhui, Zhejiang, Jiangxi, Fujian, Taiwan and other places; Qinggang is distributed in Shaanxi, Gansu, Qinghai, Jiangsu, Zhejiang, Jiangxi, Fujian, Taiwan, Henan, Guangdong, Hainan, Guangxi, Yunnan and other places.


Cranberry, also known as sweet Castanopsis, Iron Castanopsis, Bitter Castanopsis, Castanopsis Chestnut, Green Castanopsis, Green Castanopsis, Fine Leaf Green Oak, Blood Castanopsis, Face Castanopsis. Fructus Chinensis has the effects of astringent intestines, antidiarrheal, promoting body fluid and quenching thirst. It is used for diarrhea, dysentery, thirst for fluid wounds, and injury to wine.

Types of Zhu Zi

Castanopsis bittern

Also known as: blood tree, bitter tree cone, Chinese chestnut, bitter tree. Trees, 5-10m high, rare up to 15m, DBH 30-50cm, bark shallow longitudinally fissured, exfoliated, branchlets gray, scattered lenticels, current year branches reddish brown, slightly ribbed, branches and leaves absent hair. Leaves in two rows, leathery, oblong, ovate-elliptic or obovate-elliptic, 7-15 cm long, 3-6 cm wide, apex acuminate or sharply narrow, shortly caudate, The base is nearly round or broadly wedge-shaped, usually slightly shorter and oblique on one side, and the leaf margin has serrated sharp teeth above the middle, rarely with entire leaves, the midrib is slightly raised on at least the lower half of the leaf surface, and the upper half The segment is slightly sunken, the branches are obvious or very slender, and the back of the growing leaves is light silver gray; the petiole is 1.5-2.5 cm long. Inflorescence rachis glabrous, male spikes usually solitary axillary, with 12-10 stamens; female inflorescences up to 15 cm long. Infructescence 8-15 cm long, with 1 nut in the cupule, occasionally 2-3, spherical or semi-spherical, whole or covering most of the nut, diameter 12-15 mm, shell wall thickness within 1 mm, Irregular petal-shaped burst, bracteoles scale-like, most degenerated and connected transversely to form a rib-shaped ring, or only the base is connected, showing ring-shaped protrusions, and the outer wall is covered with yellow-brown puberulent hairs; the nut is nearly spherical, 10-14 mm in diameter, short pointed at the top, covered with short hairs, the navel is located at the bottom of the nut, 7-9 mm wide, the cotyledons are flat and convex, with astringent taste. The flowering period is April-May, and the fruit matures in October-November of the year.

Leaflet Qing Gang

Also known as: Castanopsis chinensis, Castanopsis chinensis, Castanopsis chinensis, Quercus chinensis, Castanopsis lobata, Green hook. Evergreen tree, 20 meters high, 1 meter in DBH. Branchlets glabrous, covered with raised light brown oblong lenticels. Leaves are ovate-lanceolate or elliptic-lanceolate, 6-11cm long, 1.8-4cm wide, apex long acuminate or short-caudate, base wedge-shaped or nearly round, with fine serrations above the middle of leaf margin, lateral Veins 9-14 on each side, often not reaching leaf margin, leaf dorsal branch veins inconspicuous, leaf surface green, leaf back powdery white, dark gray when dry, glabrous; petiole 1-2.5 cm long, glabrous. Male inflorescences 4-6 cm long; female inflorescences 1.5-3 cm long. The cup is cup-shaped, enclosing 1/3-1/2 of the nut, 1-1.8 cm in diameter, 5-8 mm in height, thin and brittle, glabrous on the inner wall, and gray-white pubescent on the outer wall; bracteoles unite to form 6 -9 concentric bands with full edges. Nuts ovate or elliptic, 1-1.5 cm in diameter, 1.4-2.5 cm in height, glabrous, with a round apex, distinct pedestal, with 5-6 rings; the navel is flat, about 6 mm in diameter. Flowering in June, fruiting in October.

Qing Gang

Also known as: Iron Oak, Qinggang Oak, Iron Oak, Fancy Tree, Iron Chestnut. Evergreen tree, up to 20 meters, diameter up to 1 meter. Branchlets glabrous. Leaf blades are leathery, obovate-elliptic or long-elliptic, 6-13cm long, 2-5.5cm wide, apex acuminate or shortly caudate, base rounded or broadly cuneate, leaf margins are sparsely serrated above the middle, sides There are 9-13 veins on each side, and the branch veins are obvious on the back of the leaves. The leaves are glabrous, and the back of the leaves has neatly flattened white single hairs, which gradually fall off when they are old, and often have white scales; the petiole is 1-3 cm long. The male inflorescence is 5-6 cm long, and the rachis of the inflorescence is pale tomentose. The infructescence is 1.5-3 cm long, bearing 2-3 fruits. The cupule is bowl-shaped, enclosing 1/3-1/2 of the nut, 0.9-1.4 cm in diameter, 0.6-0.8 cm in height, covered with thin hairs; bracteoles unite to form 5-6 concentric rings, the rings are entire or have Fine notches, closely arranged. Nuts ovate, long ovate or ellipse, 0.9-1.4 cm in diameter, 1-1.6 cm in height, glabrous or thinly hairy, flat or slightly raised navel. The flowering period is April-May, and the fruiting period is October.

Growth environment of Zhu Zi

1. Castanopsis bittern grows in low mountain miscellaneous forests below 1000m above sea level, mixed with masson pine, Quercus qinggangensis, Castanopsis chinensis and Schima superba. Except for Taiwan, Guangdong, Hainan, and Yunnan, it is mainly distributed in the south of the Yangtze River.

2. Leaflet Qing Gang grows in mountainous dense forests or sparse forests at an altitude of 200-2500m. Distributed in South Central, Southwest and Southern Shaanxi, Jiangsu, Anhui, Zhejiang, Jiangxi, Fujian, Taiwan and other places.

3. Qing Gang grows in hillsides or ravine forests below an altitude of 2600m. Distributed in Shaanxi, Gansu, Qinghai, Jiangsu, Zhejiang, Jiangxi, Fujian, Taiwan, Henan, Guangdong, Hainan, Guangxi, Yunnan and other places. month ripe.

Processing methods of Zhu Zi

Collection and processing

When the fruit is ripe in autumn, it is harvested, and the kernels are stripped after drying.

Zhu Zi TCM


Medicine part

The seed kernel of Castanopsis clerophylla (Lindl.) Schott., Cyclobalanopsis myrsinifolia (Blume) Oersted or Cyclobalanopsis glauca (Thunb.) Oerst. of Fagaceae.


Sweet, bitter, astringent, neutral in nature.


Return stomach, large intestine channel.


Astringent intestines stop diarrhea, promote body fluid to quench thirst.


Zhu Zi is used for diarrhea, dysentery, thirst for fluid wounds, and injury to wine.

Related compatibility

Treatment of suffering from alcoholism: boiled bitter oak, chewed and eaten frequently. ("Suixiju Diet Spectrum")


Oral administration: decoction, 10-15g.


Contraindicated for those with intestinal dryness and constipation.

Related discussion

"Supplements to Materia Medica": "Stops diarrhea, breaks blood, eats without hunger, makes walking, can eliminate bad blood, and quenches thirst."


From "Compendium of Materia Medica Supplements".
① "Supplementary to Materia Medica": "Cranchos, smaller than acorns, trees like chestnuts, not carved in winter and moon. Born in the south of the Yangtze River."
②Wang Ying's "Food Materia Medica": "Chrysanthemum seedlings, there are two kinds of bitter and sweet, and they are used as powder and cakes. Brown, very good."
③ "Compendium": "Fringes can be found everywhere in valleys. The trees are as big as several, and the height is two or three. Moon-blooming white flowers into spikes, like chestnut flowers; fruit as large as squat, with small buds on the outside, after frost, the buds crack and drop, the seeds are round brown and pointed, as big as bodhi seeds; the inner kernels are like almonds, bitter when eaten raw, boiled and fried It is sweet, and can also be ground into powder. Sweet mangosteen, small grains, fine white wood text, commonly known as mian quan. Bitter mangosteen, large grains, thick red wood text, common name blood mangosteen, and its black color is called iron mangosteen. "Shan Hai Jing" says: "There is a tree in front of the mountain, and its name is Castanopsis. Guo Pu's note said: "Shan Hai Jing is like oak seeds, edible, and picked in winter."

Zhu Zi benefits

Zhu Zi usually has the effect of astringent intestines and diarrhea, and has the effect of promoting body fluid and quenching thirst. It is generally suitable for treating diarrhea and dysentery, and can also be used to treat thirst and alcohol injury in fluid wounds.

Zhu Zi side effects 

People with intestinal dryness and constipation should not take Zhu Zi. At the same time, you should also pay attention to adjusting your diet during the medication period, try to focus on light and digestible food, but avoid spicy food.

Zhu Zi uses



Zhu Zi can usually be taken orally in decoction.

Make powder

Bitter Zhu Zi powder

We collect bitter Zhu Zi in the deep mountains, and obtain pure bitter mango powder through traditional methods such as sun drying, shelling, water milling, bleaching, and drying. At the same time, high-quality bitter mangosteen powder can directly replace baby talcum powder without any side effects.


Bitter Zhu Zi tofu

The bitter Zhu Zi powder is processed into the present mangosteen tofu. Cinnamon tofu is a kind of pure natural forest green food. It does not need to use any additives from production to processing, and it completely maintains the unique flavor of C. chinensis. Bitter mango tofu tastes fine, soft, waxy, slippery, fragrant and refreshing, and has the characteristics of helping digestion, strengthening the stomach, and removing greasy.

Bitter Zhu Zi soup

The food of bitter Zhu Zi also has the functions of clearing away heat and detoxifying, lowering fat and blood pressure, detoxifying blood stasis, beautifying and keeping fit, and delaying aging. It can enhance immunity and effectively prevent chronic diseases such as diabetes, cataracts, Keshan disease, Kashin-Beck disease, and arthritis. Especially it has a unique curative effect on diarrhea. As long as you drink a bowl of bitter mango soup, diarrhea can basically be stopped.

How to choose Zhu Zi?

The seeds of the sweet Zhu Zi are small, the wood is fine and white, and it is commonly known as the Chinese mangosteen.

The seeds of the bitter Zhu Zi are large, the wood is thick and red, and the common name is the blood oak. Those whose color is black are called Tiezhu.

How to buy Zhu Zi?

Native Chinese supply factory sale Zhu Zi, if you are interested in Zhuzi, Cranberry & Cranberries fruit, please fill below form, we will contact you within 24 hours.
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