Green Chilli (Hari Mirch)
The most Vitamin C-rich vegetable by a wide margin. 242mg per 100g — nearly three times a bell pepper. Capsaicin is an FDA-approved pain relief compound used in prescription medicine.
TLDR — What You Need to Know
- Green chilli contains 242mg Vitamin C per 100g — approximately 270% of daily adult needs in one 100g serving, making it the highest Vitamin C vegetable by weight
- Capsaicin binds the TRPV1 pain receptor in sensory nerve endings — the heat sensation is not damage, it is a receptor activation mimicking heat
- Topical capsaicin creams are FDA-approved for treating osteoarthritis, postherpetic neuralgia (shingles pain), and diabetic neuropathy
- Capsaicin temporarily increases metabolic rate by 4–5% and reduces appetite in some subjects — the effect is real but modest
- Green chilli is significantly higher in Vitamin C than red chilli; red dried chilli is significantly higher in beta-carotene than green
- Important distinction: bajji chilli (large, mild, used for bajji/pakoda) is the same species as hot chilli but a different variety with very low capsaicin content
What Is Green Chilli?
Green chilli (Capsicum annuum and related species) is the unripe fruit of the chilli plant, a member of the nightshade family (Solanaceae). Chilli originated in Mesoamerica — archaeological evidence places chilli cultivation in Mexico at over 6,000 years ago. It was introduced to India by the Portuguese in the 16th century, arriving via Goa around 1498. Before chilli arrived, Indian cuisine used black pepper, long pepper, and ginger for heat. The adoption of chilli into Indian cooking was remarkably rapid — within a century it had become inseparable from virtually every regional cuisine across the subcontinent.
India is the world’s largest producer of chillies, accounting for approximately 36% of global production. Major growing states are Andhra Pradesh, Telangana, Karnataka, Maharashtra, and Madhya Pradesh. Andhra Pradesh alone is responsible for a significant proportion — the region around Guntur is famous for producing some of the pungent chilli varieties including Guntur Sannam.
Chilli varieties in India range from extremely hot (Naga/Bhut Jolokia — one of the world’s hottest, from Northeast India), to mildly hot (Kashmiri, Byadgi — used primarily for deep red colour rather than heat), to the large mild bajji chilli (Bhavnagari or Anaheim types used for fritters and stuffing). The product linked in this article is the large bajji chilli variety — mild, fleshy, and ideal for batters.
Nutritional Profile
Green Chilli — Nutrition Facts per 100g Raw
Per 100g raw green chilli
| Nutrient | Amount | % Daily Value |
|---|---|---|
| Energy | 40 kcal | — |
| Protein | 2.0 g | — |
| Total Fat | 0.4 g | — |
| Carbohydrates | 8.8 g | — |
| Dietary Fibre | 1.5 g | — |
| Vitamin C | 242 mg | 269% |
| Capsaicin (active) | variable mg/g | — |
| Vitamin A (RAE) | 59 µg | — |
| Vitamin K | 14.3 µg | — |
| Vitamin B6 | 0.51 mg | 30% |
| Potassium | 340 mg | — |
The Capsaicin Science
What is capsaicin? Capsaicin (8-methyl-N-vanillyl-6-nonenamide) is the primary capsaicinoid in chilli, responsible for the sensation of heat. It is produced in the placenta (the white inner membrane) and concentrated in the seeds, not the outer flesh. The pith (white inner rib) has the highest capsaicin concentration per gram.
How it works: Capsaicin binds to the TRPV1 receptor (Transient Receptor Potential Vanilloid 1), a pain receptor in sensory nerve endings that normally responds to temperatures above 43°C and to acidic conditions. When capsaicin binds TRPV1, the receptor fires as if exposed to actual heat — this is why chilli causes a burning sensation. There is no actual tissue damage. The brain receives a heat signal and responds with vasodilation (flushing), sweating, and endorphin release.
Heat scale — Scoville Units: Capsaicin concentration is measured in Scoville Heat Units (SHU). For context:
- Bajji/Bhavnagari (mild): 100–500 SHU
- Kashmiri/Byadgi: 1,000–2,000 SHU
- Common green chilli (Jwala type): 20,000–30,000 SHU
- Guntur Sannam: 35,000–40,000 SHU
- Naga/Bhut Jolokia: 1,000,000+ SHU
Health Benefits
1. Vitamin C — 242mg per 100g
Green chilli contains 242mg Vitamin C per 100g — approximately 2.5 times more than red bell pepper (128mg), 10 times more than tomato (23mg), and nearly 5 times more than orange (53mg). This is the highest Vitamin C content of any commonly consumed vegetable. The biological functions of Vitamin C include immune cell function (neutrophil chemotaxis, lymphocyte activation), collagen synthesis, antioxidant protection, and critically — iron absorption enhancement. Even small amounts of green chilli added to a meal provide meaningful Vitamin C that significantly improves non-haem iron absorption from lentils, dals, and green vegetables.
2. Capsaicin — FDA-approved medical use
Topical capsaicin is a prescription-grade medication in the United States and European Union for chronic pain management. Specifically:
- Qutenza (8% capsaicin patch): FDA-approved for postherpetic neuralgia (nerve pain after shingles) and painful HIV-associated neuropathy
- OTC capsaicin creams (0.025–0.1%): Used for osteoarthritis and muscle pain relief
The mechanism of topical capsaicin pain relief involves initially activating and then desensitising TRPV1 receptors in peripheral sensory nerves. After repeated exposure, the nerve terminals become depleted of substance P (a pain neurotransmitter), resulting in reduced pain signal transmission. Dietary capsaicin from food consumption does not achieve the tissue concentrations required for this desensitisation effect, but topical application does.
3. Metabolic rate and thermogenesis
Capsaicin is a thermogenic compound — it temporarily raises body temperature and increases metabolic rate. Studies show acute capsaicin consumption increases energy expenditure by 4–5% and can suppress appetite in some individuals for several hours post-consumption. A systematic review (Chemical Senses, 2012) found regular capsaicin exposure modestly but measurably increased 24-hour energy expenditure. The effect is real but the magnitude is modest — approximately 50–100 extra calories burned per day at high chilli intake. It contributes to weight management as part of a broader strategy rather than being a standalone intervention.
4. Cardiovascular benefits — capsaicin and platelets
Capsaicin has antithrombotic (anti-clotting) properties. Populations with high habitual chilli consumption (Sichuan, Andhra, Mexico) show lower rates of cardiovascular disease in several observational studies. A large Chinese study of 0.5 million people (BMJ, 2015) found those who ate spicy food 6–7 days per week had a 14% lower relative risk of death from cardiovascular disease compared to those eating spicy food less than once per week. The association remained after controlling for confounders. Mechanism: capsaicin inhibits thromboxane A2-mediated platelet aggregation and promotes fibrinolysis.
5. Antimicrobial and gut properties
Capsaicin has documented antimicrobial activity in vitro against H. pylori and some gut pathogens. The burning sensation from chilli stimulates gastric mucus secretion, which is protective against gastric mucosal damage. This may seem paradoxical given GERD concerns — the nuance is that low-level capsaicin stimulation protects mucosa in the stomach, but capsaicin reaching the oesophagus causes irritation.
Green Chilli vs Red Chilli — Nutritional Differences
This is a commonly misunderstood comparison:
Green chilli (unripe):
- Higher Vitamin C (242mg vs ~140mg in fresh red chilli)
- Lower beta-carotene
- More water content, milder flavour in some varieties
Red chilli (ripe, fresh):
- Beta-carotene increases dramatically as chilli ripens and turns red (~2100µg vs ~590µg in green)
- Vitamin C lower but still significant (~140mg)
- Lycopene present in small amounts
Dried red chilli:
- Water removed — all nutrients concentrated per 100g
- Beta-carotene: ~8900µg per 100g (extremely high)
- Capsaicin concentrated, hence typically hotter
Practical use: For Vitamin C, use green chilli. For beta-carotene and colour, use red chilli. For heat and flavour concentration in cooking, dried red chilli is the preferred form.
Side Effects and Who Should Be Cautious
GERD and acid reflux: Capsaicin can relax the lower oesophageal sphincter and stimulate gastric acid secretion in susceptible individuals. Those with diagnosed GERD or oesophagitis should limit chilli intake, particularly on an empty stomach.
Gastric ulcer aggravation: Despite the common belief that chilli causes ulcers (which are actually caused by H. pylori), active ulcer patients may experience pain worsening with chilli consumption as capsaicin irritates the inflamed mucosa.
Capsaicin allergy: Rare but documented. Symptoms include skin hives, swelling, and respiratory symptoms. More common as contact dermatitis from handling chillies — wash hands thoroughly after cutting.
Eye and skin irritation: Do not touch eyes after handling chillies. Capsaicin in the eyes causes severe, temporary pain. Wash with soap and water if skin irritation occurs; milk or dairy (casein protein binds capsaicin) can neutralise mouth burning more effectively than water.
IBS: Capsaicin directly stimulates TRPV1 receptors in the gut lining, increasing gut motility. Those with IBS, particularly diarrhoea-predominant IBS, should limit chilli during symptomatic periods.
Organic vs Conventional
Chillies carry a moderate-to-high pesticide concern in Indian farming. Andhra Pradesh chilli farming uses significant quantities of insecticides. However, as a food typically consumed in small quantities (5–20g per serving), the per-serving pesticide exposure from conventional chillies is lower than from produce consumed in 100–200g quantities. Choose organic where available; if using conventional, wash thoroughly.
How to Select and Store
Selecting fresh green chillies: Choose firm, bright green chillies with no shrivelling, yellowing, or soft spots. The skin should be tight and glossy. For bajji chilli specifically, look for large, fleshy pods with thick walls and minimal internal seed cavity.
Storing fresh chillies: Refrigerate in a perforated bag or paper bag in the vegetable crisper. Lasts 1–2 weeks. Do not wash before storing — moisture accelerates mould.
Storing dried red chillies: Keep in an airtight container away from light and moisture. Lasts 6–12 months. Store whole chillies rather than ground powder for maximum shelf life and flavour retention.
Green Chilli vs Red Chilli vs Black Pepper — Capsaicin and Antioxidants
| Parameter (per 100g) | Green Chilli | Dried Red Chilli | Black Pepper |
|---|---|---|---|
| Calories | 40 kcal | 282 kcal | 251 kcal |
| Vitamin C | 242mg | ~76mg | 0mg |
| Beta-carotene | 590µg | 8900µg | 156µg |
| Capsaicin (pungency) | Present (variety-dependent) | High (concentrated) | None |
| Piperine | None | None | ~50mg/g |
| Active compound | Capsaicin (TRPV1) | Capsaicin (TRPV1) | Piperine (bioavailability enhancer) |
| Anti-inflammatory | Moderate | High | Moderate (piperine) |
| Best use | Fresh, Vitamin C source | Colour, flavour, heat | Bioavailability enhancement |
Each of these three pungent spices has a distinct bioactive compound and role. Piperine in black pepper is famous for increasing curcumin absorption 20-fold. Green chilli leads comprehensively on Vitamin C. Dried red chilli is the top beta-carotene source among common spices.
A North Indian green chilli pickle made with whole mild chillies in mustard oil and spices. Uses the bajji-style mild chilli — pungent from spices, not from capsaicin. Vitamin C largely retained as no high-heat cooking is involved.
Key Ingredients
300g large mild green chillies (bajji or Bhavnagari type), slit lengthwise · 3 tbsp yellow mustard seeds, coarsely ground · 1 tbsp fennel seeds (saunf) · 1 tsp fenugreek seeds, coarsely crushed · 1/2 tsp turmeric powder · 1 tsp red chilli powder · 2 tsp salt · 2 tbsp lemon juice or white vinegar · 4 tbsp cold-pressed mustard oil
Home Test: Artificial Colour Test for Dried Red Chilli Powder
Steps
- 1 Place 1 teaspoon of red chilli powder in a glass of water
- 2 Stir gently and allow to settle for 5 minutes
- 3 Natural red chilli powder: releases a muted orange-red colour gradually that disperses without streaking
- 4 Artificially coloured powder (Sudan Red, Rhodamine B): releases a bright, intensely red streak immediately that does not settle naturally
- 5 For whole dried chillies: rub the surface with a white damp cloth
- 6 Natural chilli: no significant colour transfer; artificially coloured chilli: bright red stain on cloth
Pure / Pass
Muted orange-red colour release in water that disperses naturally. No streaking. No significant colour transfer to white cloth. Chilli powder is genuinely coloured — safe for consumption.
Adulterated / Fail
Bright, streaky red colour release in water that does not disperse naturally. Significant red stain on white cloth test. Chilli is artificially coloured — likely with industrial dyes such as Sudan Red (a known carcinogen). Discard immediately.
Available at Organic Mandya
Organic Bajji Chilli
Large, mild, fleshy variety. No artificial colour. Grown without synthetic pesticides.
Frequently Asked Questions
Q Why does milk help with chilli burn in the mouth but water does not?
Why does milk help with chilli burn in the mouth but water does not?
Capsaicin is a fat-soluble compound — it dissolves in fat, not in water. Water spreads capsaicin across more of the mouth surface, worsening the burn. Milk contains casein protein and fat, both of which bind and dissolve capsaicin, effectively washing it away. Full-fat milk, yogurt (curd), or even ice cream work best. For hand irritation after cutting chillies, wash with soap and oil rather than plain water.
Q Does eating chilli cause stomach ulcers?
Does eating chilli cause stomach ulcers?
No — this is a medical myth. Stomach ulcers are caused by Helicobacter pylori bacterial infection (in 80–90% of cases) or long-term NSAID use. Capsaicin does not cause ulcers. In fact, capsaicin at low concentrations stimulates protective gastric mucus secretion. H. pylori is inhibited by capsaicin in laboratory studies. However, capsaicin can worsen pain in people who already have active ulcers by irritating the inflamed mucosa — this is different from causing ulcers.
Q Is green chilli healthier than red chilli?
Is green chilli healthier than red chilli?
It depends on the specific nutrient. Green chilli (unripe) has significantly more Vitamin C — 242mg vs approximately 140mg in fresh red chilli. Red chilli (ripe) is significantly higher in beta-carotene, which converts to Vitamin A. Dried red chilli is much more concentrated in both capsaicin and beta-carotene per 100g due to water removal. Both colours are nutritious — the ideal diet includes both in their respective culinary forms.
Q Can capsaicin help with weight loss?
Can capsaicin help with weight loss?
Capsaicin has a real but modest thermogenic effect — studies show it increases metabolic rate by 4–5% and may reduce appetite temporarily. The practical caloric impact is approximately 50–100 extra calories burned per day at high habitual intake. This is meaningful over months but not dramatic. Capsaicin is not a fat-burning supplement in any clinically significant sense, but including chilli in meals may contribute modestly to energy balance in a broader weight management strategy.
Last updated: March 2026
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.