Nephelium rambutan-ake – Nutritional Value, Health Benefits

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Article Summary

Nephelium rambutan-ake, the pulasan, is a tropical fruit in the soapberry family Sapindaceae. It is closely related to the rambutan and sometimes confused with it. Other related soapberry family fruits include lychee and longan. Usually eaten fresh, it is sweeter than the rambutan and lychee, but very rare outside Southeast Asia. Pulasan Quick Facts Name: Pulasan Scientific Name: Nephelium mutabile Origin Peninsular Malaysia Colors Dark red Shapes Ovoid, ellipsoid to subglobular schizocarp,...

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Definition

Nephelium rambutan-ake, the pulasan, is a tropical fruit in the soapberry family Sapindaceae. It is closely related to the rambutan and sometimes confused with it. Other related soapberry family fruits include lychee and longan. Usually eaten fresh, it is sweeter than the rambutan and lychee, but very rare outside Southeast Asia.

Pulasan Quick Facts
Name: Pulasan
Scientific Name: Nephelium mutabile
Origin Peninsular Malaysia
Colors Dark red
Shapes Ovoid, ellipsoid to subglobular schizocarp, up to 7 x 5 cm
Flesh colors White or creamy-white
Taste Sweet

Pulasan is ultra-tropical and thrives in very humid regions between 360 and 1150 feet of altitude. The name pulasan is derived from the Malay word “pulas” which means pillars. Fruit is opened through the act of twisting the fruit with both hands so the name pulasan occurred. The tree is ornamental which attains a height of 10 to 15 m with a short trunk 30 to 40 cm thick. Young branchlets are hairy and brown. Leaves are alternate, pinnate, or odd-pinnate. Leaves are 17 to 45 cm long with 2-5 pairs of opposite or nearly opposite leaflets which are oblong or elliptic-lanceolate, 6.25-17.5 cm long, and up to 5 cm wide. Flowers are small, petalless, greenish with 4 to 5 hairy sepals that are borne singly or in clusters on the branches of erect, axillary, or terminal. Fruit is ovoid, 5 to 7.5 cm long, dark red and rind is leathery with conical, blunt-tipped tubercles or thick and straight spines that are 1 cm long. The fruit consists of a single seed that resembles the shape and size of an almond. Seed is ovoid, light brown, oblong or ellipsoid and flattened on one side and about 2 to 3.5 cm long. Seeds are separated easily from the pulp.

Name Pulasan
Scientific Name Nephelium mutabile
Native Peninsular Malaysia
Name in Other Languages Indonesia: kapulasan;
Thailand: ngoh-khonsan;
Brunei: maritam;
Philippines: panungayan;
English: ramboostan, rambutan;
Filipino: usan, rambutan;
French: litchichevelu;
German: Rambutan;
Indonesian: chorogol, gente, rambutan, kakapas;
Khmer: saaw maaw, ser mon;
Malay: rambutan, buah abong, rangalau;
Mandarin: hooun mo daon shau tsz;
Swahili: mshokishoki;
Thai: phruan ngoh, ngoh paa, ngoh;
Vietnamese: vai thieu, saaw maaw, chom chom
Plant Size 10 – 15 m in height, up to 80 cm in bole diameter
Leaf Alternate, pinnate, elliptic-oblong, oblong and dark green
Flowering Season February/March
Fruit shape & size Ovoid, ellipsoid to subglobular schizocarp, up to 7 x 5 cm
Fruit weight 20-95 g
Fruit color Dark red
Pulp White or creamy-white and translucent
Seed Ovoid, oblong or ellipsoidal and light brown
Fruit Taste Sweet
Flavor
Fruiting season Late April to May

 

Pulasan Scientific Classification

Scientific Name: Nephelium mutabile

Rank Scientific Name & (Common Name)
Kingdom Plantae (Plants)
Subkingdom Viridiplantae  (Green plants)
Infrakingdom Streptophyta  (Land plants)
Superdivision Embryophyta
Division Tracheophyta  (Vascular plants, tracheophytes)
Class Magnoliopsida
Order Sapindales
Family Sapindaceae (Soapberries)
Genus Nephelium L.
Species Nephelium ramboutan-ake (Labill.) Leenh.

Health Benefits of Pulasan

  1. Lose weight

This fruit is helpful for those who want to shed extra pounds from the body. It is due to the high content of dietary fiber that makes one feel heavier in the stomach. It also helps to suppress hunger effectively.

  1. Control blood sugar levels

This fruit is helpful for diabetic patients as well. It manages sugar levels by regulating the amount of sugar that is released into the bloodstream.

  1. Bowel movement

Dietary fiber is essential for digestion and crucial for promoting regular bowel movement. It also prevents .

  1. Anti-aging

The fruit has Vitamin C that is crucial for making one look younger than actual age. It also eliminates free radicals by protecting skin cells.

  1. Acts as antioxidant

This fruit has hydroquinone, ascorbic acid, and pyrogallol in fruit that acts as potent antioxidants which eliminate free radicals from the body.

Traditional uses

  • Roots are used for treating fevers.
  • Use the root decoction for treating fevers.

Culinary uses

  • Consume the fruit raw or make jams and compotes.
  • Use the seeds to extract oil.
  • Dry or freeze it and use it to flavor puddings and ice cream.
  • Made it into jellies, jams, preserves, and sauces.
  • Seeds are boiled or roasted and used for preparing cocoa-like beverages.

References

Doctor visit helper

Prepare before seeing a doctor

A simple rural-patient checklist to help you explain symptoms clearly, ask better questions, and avoid unsafe self-treatment.

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: Medicine doctor / pediatrician for children / qualified clinician
Tests to discuss with doctor
  • Temperature chart and hydration assessment
  • CBC with platelet count if fever persists or dengue/other infection is possible
  • Urine test, malaria/dengue tests, chest evaluation, or blood culture only when clinically indicated
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?
  • Do I need antibiotics, or is this more likely viral?

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: Nephelium rambutan-ake – Nutritional Value, Health Benefits

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.