Blackbead, Dog Fruit, Djengkol Tree, Luk Nieng Tree, Jing, Kanieng, Chanieng

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Archidendron jiringa or Archidendron pauciflorum, commonly known as Ngapi Nut, Djenkol, Jenkol or Jering is a species of flowering tree in the pea family, Fabaceae. The plant is native to Southeast Asian countries and occurs wild and cultivated in Malaysia, Indonesia (Java, Sumatra, and Kalimantan),...

For severe symptoms, danger signs, pregnancy, child illness, or sudden worsening, seek urgent medical care.

বাংলা রোগী নোট এখনো যোগ করা হয়নি। পোস্ট এডিটরে “RX Bangla Patient Mode” বক্স থেকে সহজ বাংলা সারাংশ যোগ করুন।

এই তথ্য শিক্ষা ও সচেতনতার জন্য। এটি ডাক্তারি পরীক্ষা, রোগ নির্ণয় বা প্রেসক্রিপশনের বিকল্প নয়।

Article Summary

Archidendron jiringa or Archidendron pauciflorum, commonly known as Ngapi Nut, Djenkol, Jenkol or Jering is a species of flowering tree in the pea family, Fabaceae. The plant is native to Southeast Asian countries and occurs wild and cultivated in Malaysia, Indonesia (Java, Sumatra, and Kalimantan), Brunei, Thailand, Burma, and Bangladesh. Popular common names of Ngapi Nut are Blackbead, Dog Fruit, Djengkol Tree, Luk Nieng Tree,...

Key Takeaways

  • This article explains Ngapi Nut Scientific Classification in simple medical language.
  • This article explains Health benefits of Ngapi Nut in simple medical language.
Educational health guideWritten for patient understanding and clinical awareness.
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  • Severe symptoms, breathing difficulty, fainting, confusion, or rapidly worsening illness.
  • New weakness, severe pain, high fever, or symptoms after a serious injury.
  • Any symptom that feels urgent, unusual, or unsafe for the patient.
1

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2

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Definition

Archidendron jiringa or Archidendron pauciflorum, commonly known as Ngapi Nut, Djenkol, Jenkol or Jering is a species of flowering tree in the pea family, Fabaceae. The plant is native to Southeast Asian countries and occurs wild and cultivated in Malaysia, Indonesia (Java, Sumatra, and Kalimantan), Brunei, Thailand, Burma, and Bangladesh. Popular common names of Ngapi Nut are Blackbead, Dog Fruit, Djengkol Tree, Luk Nieng Tree, Jing, Nieng, Niang, Kanieng, Chanieng, Yawng, Ngapi nut, Dhinyindi, Jering, Cha niang, Jaring and Tutung. They are mainly consumed in Thailand, Malaysia, Burma, and Indonesia and prepared by frying, boiling, or roasting and are also eaten raw. The beans are mildly toxic due to the presence of djenkolic acid, an amino acid that causes djenkolism (djenkol bean poisoning). It can cause damaging gastrointestinal issues if over-consumed. Traditionally, the beans are boiled in water three separate times before consumption. The beans and leaves of the Ngapi Nut tree are traditionally used for medicinal purposes such as purifying the blood. To date, Ngapi Nut is traded on local markets only. In addition to its culinary purposes, the bean pods and the bark of the Ngapi Nut tree are also used to make purple and black dyes in local Malaysian villages.

Ngapi nuts facts

Name Ngapi Nut
Scientific Name Archidendron jiringa OR
Archidendron pauciflorum
Native Southeast Asian countries and occurs wild and cultivated in Malaysia, Indonesia (Java, Sumatra, Kalimantan), Brunei, Thailand, Burma and Bangladesh
Common Names Blackbead, Dog Fruit, Djengkol Tree, Luk Nieng Tree, Ngapi Nut, Jing, Nieng, Niang, Kanieng, Chanieng, Yawng, Ngapi nut, Dhinyindi, Jering, Cha niang, Jaring, Tutung
Name in Other Languages Burmese: Danyin-wek, tangyin, tanyeng-pen, Danyin, Dog Fruit,
Taujin
Cambodia: Krakos
China: Bin lang
English: Ngapi nut, Djengkol bean, djengkol tree, dog fruit
French: Jengkol
Indonesia: Jringkol, Jengkol, Jingkol, Jering, Jarring,
Jaring-Jaring, Jengkol Hutan, Jering Altut, Tutung, Lubi, Jarung, jingkol, lubi,  djengkol tree
Malaysia: Jering, jiring
Myanmar: Tangyin, tanyeng-pen, danyin, danyin-wek, dog fruit, tangyin, taujin, tanyeng-pen
Nepali: Dhinyindi
Malay: Jengkol, Jering, Jiring
Swedish: Jengkol
Thailand: Niang, niang-nok; chaniang; cha niang, khang deng, luk nieng, niang, pha niang, niang-yai
Plant Growth Habit Medium-sized tree
Growing Climates Forests of humid and mountainous areas, along river banks, Primary and secondary rain forest, evergreen forest, high rainfall and mountainous areas, undulating hills, lowland flats and along river banks
Soil Prefers a well-drained soil. It is found growing on sandy soils, lateritic soils and reddish sandy clay on flat land and low undulating hills
Plant Size Up to 21 m tall and 60 cm of trunk diameter
Bark Grey or grey-white, usually smooth, rarely c. flaky, inner bark pink or reddish brown
Sapwood White or pinkish white, heartwood white, with a strong smell of garlic
Leaf Bipinnate and measures up to 25 cm long. The petiole is measures 2-6 cm long. The leaflets are 2-3 pairs per pinna, ovate-elliptical to oblong, measuring 8-15 cm x 4-5 cm, opposite, chartaceous, hairless and dark violet-red when young
Flowering season Between September and January
Inflorescence Inflorescence axillary, paniculate, 20 cm long with 4–7 sessile flowers in a pseudo-umbel
Flower Pentamerous, bisexual, white with a cup shaped calyx and tubular corolla and numerous yellowish-white stamens
Fruit Shape & Size Compressed, falcate, twisted, glabrous, woody legume, deep purple, deeply lobed along the lower suture, 20–25 cm by 4–5 cm wide and easily broken by hand. There are 3–6 seeds per pod. The seed is 3–5 cm across with yellow testa when young, which turns brown at maturity
Fruit Color Yellow-green color when young and turns into dark brown during ripening
Seed Compressed orbicular 2.5–3 cm across and 1.5 cm thick, with yellowish white testa
Propagation By seed
Health Benefits
  • Prevent Anemia
  • Prevents Bone Loss / Strengthens bones and teeth
  • Eliminate Free Radicals
  • Managing coronary heart disease
  • Troubleshooting constriction of blood vessels
  • Stabilize the vital organs in the body
  • Maintain heart health
  • Streamline the stomach

 

Ngapi Nut Scientific Classification

Scientific Name: Archidendron jiringa

Rank Scientific Name & (Common Name)
Kingdom Plantae (Plants)
Subkingdom Tracheobionta (Vascular plants)
Infrakingdom Streptophyta  (land plants)
Super Division Embryophyta
Division Tracheophyta  (vascular plants, tracheophytes)
Sub Division Spermatophytina  (spermatophytes, seed plants, phanérogames)
Class Magnoliopsida
Super Order Rosanae
Order Fabales
Family Fabaceae (peas, legumes)
Genus Archidendron F. Muell.
Species Archidendron jiringa (Jack) I.C. Nielsen
Synonyms
  • Albizia jiringa (Jack) Kurz
  • Albizia lucida (“ensu auct., non (Roxb.”) Benth
  • Feuilleea jiringa (Jack) Kuntze
  • Inga bigemina (“ensu auct., non (L.”) Willd
  • Inga jiringa (Jack) DC
  • Inga kaeringa (Roxb.) Voigt
  • Mimosa jiringa Jack
  • Mimosa kaeringa Roxb
  • Pithecellobium jiringa (Jack) Prain
  • Pithecellobium lobatum Benth
  • Zygia jiringa (Jack) Kosterm

Plant Description

Ngapi Nut is a medium-sized legume tree that grows up to 21 m tall and 60 cm of trunk diameter with grey smooth bark, white wood, terete and with smooth branchlets. The plant is found growing in forests of humid and mountainous areas, along river banks, primary and secondary rain forests, evergreen forests, high rainfall, mountainous areas, undulating hills, lowland flats, and along river banks. The plant prefers well-drained soil. It is found growing on sandy soils, lateritic soils and reddish sandy clay on flat land and low undulating hills. The bark is grey or grey-white, usually smooth, rarely flaky, the inner bark is pink or reddish brown. Sapwood is white or pinkish white, heartwood white, with a strong smell of garlic.

Leaves

The leaves are 2-pinnate and measure up to 25 cm long. The petiole is measured 2-6 cm long. The leaflets are 2-3 pairs per pinna, ovate-elliptical to oblong, measuring about 8-15 cm long and 4-5 cm wide, opposite, chartaceous, hairless. The young leaves have a wine-red color and are edible.

Flowers

The inflorescence is an axillary, paniculate and measures up to 20 cm long. The flowers are sessile, 4-7 together in a pseudo-umbel on a short peduncle, 5-merous and bisexual. The sepal is a cup-shaped. The petal is tubular, measuring 4-5 mm long, with 5-lobed and white. The stamens are numerous where at the base they are united into a tube and with free filament parts that are about 5 mm long. Flowering time of the tree is between September and January.

Fruit

The fruit (legume) of the tree is a woody, glabrous and deep purple pod. Each Pod contains around three to nine round-shaped seeds. The pods are formed semicircular or twisted in a wide spiral. The seed coat of a young seed shows a yellow-green color and turns into dark brown during ripening. Then the ripe fruit dehisces along the ventral suture. The seeds are orbicular compressed, measuring about 35 mm long and 10 mm wide, yellow-green testa when young and turn dark brown as they mature. The germination is hypogeal and the first five leaves are scale-shaped.

Health benefits of Ngapi Nut

Listed below are some of the popular health benefits of Ngapi nuts

1. Prevent Anemia

Ngapi Nut is rich in iron in which is very contributory to prevent and overcoming the lack of production of red blood cells in the body. You certainly know that when the body lacks iron, the production of red blood cells will decrease. As a result, the supply of oxygen and nutrients needed by all cells in the body will also be reduced.

The effects of a lack of oxygen supply and nutrients in the cells will decrease cell function/performance. No wonder if a person has iron deficiency, he will look weak, tired, and not excited. Consuming Ngapi Nut during menstruation is strongly recommended since your body lack iron due to a large amount of menstrual blood that comes out of the body.

2. Prevents Bone Loss / Strengthens bones and teeth

Apart from iron and protein, Ngapi Nut consists of good amount of calcium and phosphorus. These two substances are quite essential for your bones. Calcium and phosphorus can prevent bone loss (fracture risk. সহজ বাংলা: হাড় দুর্বল হয়ে ভাঙার ঝুঁকি বেশি।" data-rx-term="osteoporosis" data-rx-definition="Osteoporosis means weak, fragile bones with higher fracture risk. সহজ বাংলা: হাড় দুর্বল হয়ে ভাঙার ঝুঁকি বেশি।">osteoporosis). So, often consume Ngapi Nut with a portion sufficient to make the bones become stronger.

3. Eliminate Free Radicals

Ngapi Nut consists of some vitamins such as vitamin A, vitamin B1, vitamin B2, and vitamin C. Vitamin A is beneficial for maintaining eye health and can improve the sharpness of the sense of sight. Vitamin A and Vitamin C also acts as an antioxidant. The benefits of antioxidants are known potent substances that counteract free radicals cause cancer.

4. Managing coronary heart disease

Bigfoot is a food that is a diuretic (urine disposal to be smooth). Smooth disposal of urine is very good for people with heart disease.

5. Troubleshooting constriction of blood vessels

Patients with heart disease experienced a narrowing of blood vessels so that blood flowing toward the heart becomes smooth. The mineral content in Ngapi Nut can dilate narrowed blood vessels and prevent blood vessel narrowing back. Well, for optimal efficacy, you should not cook Ngapi Nut too much (overcooked).

6. Stabilize the vital organs in the body

Essential organs in the body will function properly and stable if the body fulfilled the needs of folic acid and vitamin B6. Pregnant women are also advised to consume foods rich in folic acid for the development of the fetus.

Ngapi Nut is one of the best examples of foods rich in folic acid. But once it should be remembered that consume Ngapi Nut sufficiently. Do not consume excessively because excessive Ngapi Nut will be less good effect for kidney organs.

7. Maintain heart health

As mentioned above, Ngapi Nut consists of antioxidant substances that are very good for the health of the body especially heart health. Toxins or toxins in the body will be difficult to enter the body, especially the heart, thanks to the protection provided by these antioxidants. Anything that blocks the flow of blood in the blood vessels will also be lost by the substances contained in Ngapi Nut. Blood flow will become smoother and the heart will function properly and optimally.

8. Streamline the stomach

Ngapi Nut can help streamline a swollen stomach. High fiber content can launch defecate so indirectly makes the stomach slim. One of the causes of distended stomach in a person is due to defecation that is not smooth and irregular.

Traditional uses and benefits of Ngapi Nut

  • Seeds are believed to relieve insulin is low or not working well. সহজ বাংলা: রক্তে চিনি বেশি থাকার রোগ।" data-rx-term="diabetes" data-rx-definition="Diabetes is a condition where blood sugar stays too high because insulin is low or not working well. সহজ বাংলা: রক্তে চিনি বেশি থাকার রোগ।">diabetes symptoms.
  • Burnt old leaves can be used against itching while burnt young leaves can be used as wound powder for cuts.
  • They are also applied traditionally as a diuretic, but are poisonous when eaten in large amounts.
  • Raw seeds are thought to purify the blood or cure dysentery.
  • Compresses with young leaves are used for skin problems.
  • The bark is used to treat toothache and pectoralgia.
  • Leaves are applied externally to cuts and scabies.
  • It is used to treat toothache, gum pains, chest pains and skin ailments in the old Malaysian folk.
  • Leaves are used to help reduce symptoms of chest pain, toothaches, and skin problems.
  • Leaves can also be ground into a powder and used to help heal cuts and wounds.
  • In Malaysia, Ngapi Nut leaves have been used as a poultice for skin complaints and for pains in the chest in traditional medicine.
  • Bark has been used for chest pains and to make a gargle for tooth-ache.

Culinary Uses

  • Young leaves are cooked and the very young shoots and flowers are eaten as vegetables.
  • Seeds are consumed raw or cooked.
  • Young seeds are believed to have a better flavor than older ones, though some people prefer to eat germinating mature seeds.
  • Seeds are boiled thoroughly till the offensive smell has disappeared, then consumed with salt and grated coconut.
  • Very young wine-red shoots are consumed raw as a vegetable.
  • Flowers are eaten as a vegetable.
  • Seeds are used to flavor food and are enjoyed in Thailand, Indonesia and Malaysia.
  • Immature seeds are eaten raw as ulam.
  • Germinated seeds are eaten after removal of the sprouts.
  • Wine-red, tender leaves and shoots are also consumed raw as ulam or vegetable.
  • Seeds are also pounded with ginger and boiled before consumption.
  • Seeds are also eaten with sambel kimiri (a paste made of pounded roasted candlenut, green chilies and dried shrimps) in Java.
  • In southern Thailand, luk-nieng is always eaten with curry or with any hot food.
  • Maturing seeds are boiled and the extracts are discarded several times.
  • Mixture of fresh coconut endosperm and sugar is added to the cooked luk-nieng for consumption.
  • Cooked luk-nieng in a solution of coconut milk and sugar is also popular in southern Thailand.

Other facts

  • Ngapi Nut is a great source of purple dye for silk, black dye, and reddish dye.
  • Pods are used as a shampoo.
  • Bark, leaves, and seeds have insecticidal properties.
  • Wood is soft and used for cabinet work and for fuel.
  • Pods have been used as a source of purple dye for silk.
  • Bark and leaves are used for dyeing matting black.
  • Reddish dye is obtained from the seeds.
  • Pulverized seeds are used, they are rich in saponins.
  • Wood has a strong smell of garlic when fresh; it is soft, easy to saw and to work with.
  • It is considered to be only suitable for cabinet work, interior joinery.
  • The wood is used for fuel.
  • The pods of the seeds dye silk purple and the bark of the tree dyes black.
  • Shell is also being used for hair washing, timber as firewood and for building (e.g. coffins).
  • Due to the content of djenkolic acids in the seeds, the raw seed is also being applied to the production of organic pesticides in combination with other plants to kill and prevent the growth of pests.
  • Seed weight is approximately 15 g per seed.
  • Wood is used for light construction, furniture, cabinet work, canoes.
  • Ngapi Nut provides a purple dye on silk and has been used by dyers in Pekan, Pahang, Malaysia.
  • In Borneo, the bark is used for dyeing matting black.
  • The leaves can also be similarly used.
  • Soft wood of the timber have been used for building coffins and as firewood.

Precautions

  • Ingestion of the seed can cause the formation of sharp needle-like crystals of djenkolic acid in the kidney or urinary tract.
  • In severe cases, crystals of djenkolic acid have been found in urine.
  • Excessive consumption of Ngapi Nut can cause toxic effects to the heart, kidneys, liver, and pancreas.
  • Seed poisoning symptoms include muscle spasms, gout, urinary retention, and acute renal failure. The condition is mainly experienced by men.
  • Eating Ngapi Nut in small amounts creates appearance problems because it produces bad breath, sweat, feces, and urine. Actually, this odor can be overcome by cleaning yourself with hygiene equipment containing fragrances, such as toothpaste, mouthwash, soap, and deodorant. Odor at the time of urination can be reduced if rinsing is done before and after urine with a sufficient amount of water or if necessary rinse with cleaning fluid.

 


References


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Prepare before seeing a doctor

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Safety note: This is not a prescription or diagnosis. For severe symptoms, pregnancy danger signs, children with serious illness, chest pain, breathing difficulty, stroke-like weakness, or major injury, seek urgent care.

Which doctor may help?

Start with a registered doctor or the nearest qualified health center.

What to tell the doctor

  • Write when the problem started and how it changed.
  • Bring old prescriptions, investigation reports, and current medicines.
  • Write allergies, pregnancy status, diabetes, kidney/liver disease, and major past illnesses.
  • Bring one family member if the patient is weak, elderly, confused, or a child.

Questions to ask

  • What is the most likely cause of my symptoms?
  • Which danger signs mean I should go to hospital quickly?
  • Which tests are necessary now, and which can wait?
  • How should I take medicines safely and what side effects should I watch for?
  • When should I come for follow-up?

Tests to discuss

  • Vital signs: temperature, pulse, blood pressure, oxygen saturation
  • Basic physical examination by a clinician
  • CBC, urine test, blood sugar, or imaging only when clinically needed

Avoid these mistakes

  • Do not use antibiotics, steroid tablets/injections, or strong painkillers without proper medical advice.
  • Do not hide pregnancy, kidney disease, ulcer, allergy, or blood thinner use.
  • Do not delay emergency care when danger signs are present.

Medicine safety and first-aid guide

This section is for patient education only. It does not replace a doctor, pharmacist, or emergency care.

Safe first steps

  • Avoid heavy lifting, sudden bending, and prolonged bed rest.
  • Use comfortable posture and gentle movement as tolerated.
  • Discuss physiotherapy, X-ray, or MRI only when clinically needed.

OTC medicine safety

  • For mild back pain, pain-relief medicine may be discussed with a doctor or pharmacist.
  • Avoid repeated painkiller use if you have kidney disease, stomach ulcer, uncontrolled blood pressure, or are taking blood thinners.

Avoid these mistakes

  • Do not start antibiotics without a proper medical decision.
  • Do not use steroid tablets or injections casually for quick relief.
  • Do not delay emergency care because of home remedies.

Get urgent help if

  • Back pain with leg weakness, numbness around private area, loss of urine/stool control, fever, cancer history, or major injury needs urgent care.
Medicine names, dose, and timing must be decided by a qualified clinician or pharmacist after checking age, pregnancy, allergy, other diseases, and current medicines.

For rural patients and family caregivers

Patient health record and symptom diary

Write your symptoms, medicines already taken, test results, and questions before visiting a doctor. This note stays on your device unless you print or copy it.

Doctor to discuss: Emergency care / cardiology / medicine doctor
Tests to discuss with doctor
  • ECG as early as possible when chest pain suggests heart risk
  • Troponin or cardiac blood tests if doctor suspects heart attack
  • Blood pressure, oxygen level, chest examination, and other tests as advised urgently
Questions to ask
  • What is the most likely cause of my symptoms?
  • Which warning signs mean I should go to emergency care?
  • Which tests are really needed now?
  • Which medicines are safe for my age, pregnancy status, allergy, kidney/liver/stomach condition, and current medicines?
  • Is this heart-related, and do I need emergency observation?

Emergency warning signs such as chest pain, severe breathing difficulty, sudden weakness, confusion, severe dehydration, major injury, or loss of bladder/bowel control need urgent medical care. Do not wait for online information.

Safe pathway to proper treatment

Care roadmap for: Blackbead, Dog Fruit, Djengkol Tree, Luk Nieng Tree, Jing, Kanieng, Chanieng

Use this simple roadmap to understand the next safe steps. It is educational and does not replace examination by a doctor.

Go to emergency care if you notice:
  • Severe or rapidly worsening symptoms
  • Breathing difficulty, chest pain, fainting, confusion, severe weakness, major injury, or severe dehydration
Doctor / service to discuss: Qualified healthcare provider; specialist depends on symptoms and examination.
  1. Step 1

    Check danger signs first

    If danger signs are present, seek emergency care and do not wait for online information.

  2. Step 2

    Record the symptom story

    Write when symptoms started, severity, medicines already taken, allergies, pregnancy status, and test results.

  3. Step 3

    Visit a qualified clinician

    A doctor, nurse, or qualified healthcare provider can examine you and decide which tests or treatment are needed.

  4. Step 4

    Do only useful tests

    Do tests after clinical assessment. Avoid unnecessary tests, random antibiotics, or repeated medicines without diagnosis.

  5. Step 5

    Follow up and return early if worse

    If symptoms worsen, new warning signs appear, or treatment is not helping, return for review quickly.

Rural patient practical tips
  • Take a written symptom diary and all previous prescriptions/test reports.
  • Do not hide medicines already taken, even herbal or over-the-counter medicines.
  • Ask which warning signs mean urgent referral to hospital.

This roadmap is for education. A real diagnosis and treatment plan requires history, examination, and clinical judgment.

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Write your symptom story. A health professional or site editor can review it before any answer is prepared. This box is not for emergency care.

Emergency first: Severe chest pain, breathing trouble, unconsciousness, stroke signs, severe injury, heavy bleeding, or rapidly worsening symptoms need urgent local medical care now.

Frequently Asked Questions

Is this article a replacement for a doctor?

No. It is educational content only. Patients should consult a qualified clinician for diagnosis and treatment.

When should I seek urgent care?

Seek urgent care for severe symptoms, rapidly worsening condition, breathing difficulty, severe pain, neurological changes, or any emergency warning sign.