In This Article
Groundnut (Peanut)
The most protein-dense legume in the Indian kitchen. 26g protein per 100g, heart-healthy MUFA fats, and resveratrol — plus the aflatoxin concern you need to know.
TLDR — Groundnut at a Glance
- 26g protein per 100g — higher than most legumes and comparable to some meats
- Oleic acid (MUFA) at 24g/100g — the same heart-healthy monounsaturated fat found in olive oil
- Aflatoxin risk: groundnuts stored improperly develop aflatoxin mold — a serious carcinogen; always buy from tested sources
- Resveratrol is present in the papery skin — the same antioxidant found in red wine
- Peanut allergy is one of the most common and severe food allergies — can cause anaphylaxis
- Dry roasting at 160°C for 20 minutes reduces aflatoxin by ~30% but does not eliminate it
What Is Groundnut?
Groundnut (Arachis hypogaea), also called peanut, is technically a legume — not a nut. The plant flowers above ground, then the pods develop underground (hence ‘ground’ nut). Despite being a legume, groundnut has a nutritional profile closer to tree nuts: high fat, high protein, and relatively low carbohydrate.
India is the second-largest groundnut producer in the world. Groundnuts are integral to South Indian cooking — the foundation of groundnut chutney, chikki, groundnut oil, and numerous Karnataka and Tamil Nadu dishes.
Nutritional Profile
Groundnut — Nutrition Facts (per 100g, dry roasted)
Per 100g (typical serving: 30g)
| Nutrient | Amount | % Daily Value |
|---|---|---|
| Energy | 585 kcal | — |
| Protein | 23.7 g | — |
| Total Fat | 49.7 g | — |
| MUFA (Oleic acid) | 24.4 g | — |
| PUFA (Linoleic acid) | 15.6 g | — |
| Saturated Fat | 6.9 g | — |
| Carbohydrates | 21.5 g | — |
| Dietary Fibre | 8.0 g | — |
| Vitamin E | 8.0 mg | 53% |
| Niacin (B3) | 13.8 mg | 86% |
| Magnesium | 168 mg | — |
| Iron | 4.6 mg | — |
The Aflatoxin Warning
This is the most important thing to know about groundnuts.
Aflatoxins are toxins produced by Aspergillus flavus and Aspergillus parasiticus moulds that grow on groundnuts when stored in warm, humid conditions. Aflatoxin B1 is classified by the WHO as a Group 1 carcinogen — a definitive human carcinogen associated with liver cancer.
How to recognise risky groundnuts:
- Shrivelled, discoloured, or mouldy appearance
- Musty, stale, or unusual smell
- Visible mould on any kernels
How to reduce risk:
- Buy only from sources that test for aflatoxin (ask for lab reports)
- Store in a cool, dry, airtight container
- Use within 3-4 months of purchase
- Discard any batch with unusual smell or appearance
- Never consume groundnuts that have been stored in damp conditions
Dry roasting at 160°C for 20 minutes reduces aflatoxin content by approximately 30% — not enough to make contaminated groundnuts safe, but a meaningful reduction with properly stored nuts.
Health Benefits
Protein: At 26g/100g, groundnut provides more protein per rupee than almost any other food in India. A 30g serving provides approximately 7g protein.
Heart health: The MUFA (oleic acid) profile is similar to olive oil. Clinical studies show regular groundnut consumption is associated with reduced LDL cholesterol and improved cardiovascular markers — similar to tree nuts.
Vitamin E: 8mg per 100g (53% of daily requirement). Vitamin E is an antioxidant important for immune function and skin health.
Niacin (Vitamin B3): 86% of daily requirement per 100g. Critical for energy metabolism and DNA repair.
Resveratrol: Found in the papery red skin (testa) of groundnuts — the same antioxidant compound studied for cardiovascular and anti-inflammatory properties in red wine.
Side Effects and Precautions
Peanut allergy — serious: Peanut allergy affects approximately 1-2% of the population and is one of the most common causes of anaphylaxis (life-threatening allergic reaction). Symptoms range from hives and swelling to breathing difficulty. If you have never eaten peanuts, introduce cautiously. Do not feed to children under 6 months. Consult an allergist if you suspect sensitivity.
Calorie density: At 585 kcal per 100g, groundnuts are calorically dense. A typical snack serving of 30g provides 175 kcal. Portion control is important for weight management.
Oxalates: Groundnuts contain moderate oxalates. People with calcium oxalate kidney stones should limit intake.
How to Use
- Snack: Dry roasted with minimal salt — 30g serving
- South Indian chutney: Dry roasted, blended with green chilli, ginger, and fresh coconut
- Chikki: Traditional peanut-jaggery brittle — natural energy bar
- Cold-pressed groundnut oil: High MUFA, moderate smoke point (~160°C) — excellent for South Indian cooking
- Peanut butter: Grind dry roasted groundnuts (no oil, sugar, or palm oil needed)
- Boiled groundnuts: Add raw groundnuts to boiling water with salt — traditional street snack, lower calorie than roasted
Organic Mandya products are
Frequently Asked Questions
Q Does eating groundnuts raise cholesterol?
Does eating groundnuts raise cholesterol?
No — the evidence shows the opposite. Regular groundnut consumption is associated with reduced LDL (bad) cholesterol in multiple clinical studies. This is attributed to the high MUFA (oleic acid) content — the same fat in olive oil — which replaces saturated fat in the diet. Groundnuts also contain plant sterols that further reduce cholesterol absorption.
Q How serious is the aflatoxin risk in groundnuts?
How serious is the aflatoxin risk in groundnuts?
It is real and should not be ignored. Aflatoxin B1 is a definitive human carcinogen linked to liver cancer. The risk is highest with groundnuts stored in humid conditions for extended periods. Buying from sources that conduct aflatoxin testing, storing properly in airtight containers, and using within a few months of purchase significantly reduces risk. Organic Mandya tests groundnuts for aflatoxin — reports available at trust.organicmandya.com.
Q How much groundnut should I eat per day?
How much groundnut should I eat per day?
30g (a small handful) is a reasonable daily snack serving — approximately 175 kcal and 7g protein. This amount provides meaningful nutritional benefit without excessive calories. People with peanut allergy should avoid entirely. People with kidney stones should limit due to oxalate content.
Q Is peanut butter as healthy as whole groundnuts?
Is peanut butter as healthy as whole groundnuts?
Natural peanut butter (just groundnuts, no added oil, sugar, or palm oil) retains the same nutritional profile as whole groundnuts. Commercial peanut butters often add hydrogenated oils, sugar, and salt — check the ingredient list. The best peanut butter has one ingredient: groundnuts.
Available at Organic Mandya
Groundnut (Peanut)
26g protein, heart-healthy MUFA. Aflatoxin tested. Raw whole peanuts from verified farms.
Disclaimer: This article is for educational and informational purposes only. It is not a substitute for professional medical advice, diagnosis, or treatment. Always consult your doctor or a qualified healthcare provider before making dietary changes, especially if you have a medical condition.