Capsicum (Bell Pepper)
Red capsicum has 190mg of Vitamin C per 100g — more than three times an orange. Green capsicum is just unripe red, and nutritionally a different vegetable.
TLDR — What You Need to Know
- Red capsicum is nutritionally far superior to green — more Vitamin C (190mg vs 80mg), more beta-carotene, more lycopene, and sweeter because it is fully ripe
- Green capsicum is simply unripe red or yellow capsicum harvested early — lower in virtually all antioxidants and vitamins
- 190mg Vitamin C per 100g makes red capsicum the richest common dietary source of Vitamin C — 3.5x more than orange juice
- No capsaicin in capsicum — unlike chillies, capsicum contains no heat compounds; it is sweet by nature
- On the EWG Dirty Dozen consistently — thin skin, frequently consumed raw; buy organic
- Beta-carotene is fat-soluble — eating capsicum with ghee or olive oil significantly increases carotenoid absorption
What Is Capsicum?
Capsicum (Capsicum annuum) — called bell pepper in North America and shimla mirch in North India — is a sweet pepper belonging to the nightshade family (Solanaceae). Like tomato and potato, it originates from Central and South America, where it was cultivated for over 6,000 years before Spanish colonisers brought it to Europe and Asia in the 16th century.
The critical fact most people do not know: red, yellow, and orange capsicum are the same fruit at different stages of ripeness. Green capsicum is harvested unripe — before the mature pigments (carotenoids, lycopene) and sugars have fully developed. The fruit is left on the plant to ripen to yellow, then orange, then red, developing progressively higher antioxidant, Vitamin C, and sugar content at each stage.
This is why red capsicum is approximately three times more expensive than green — it requires significantly more growing time and energy per fruit. It is also why red capsicum tastes sweeter and milder, and has a nutritional profile that is essentially a different food from green.
In India, capsicum is widely cultivated in Karnataka (particularly around Ooty and the Nilgiris), Himachal Pradesh, Uttar Pradesh, and Maharashtra. It is used both raw (in salads, sandwiches) and cooked (in stir-fries, rice dishes, and curries).
Nutritional Profile
Red Capsicum — Nutrition Facts per 100g Raw
Per 100g raw (red capsicum)
| Nutrient | Amount | % Daily Value |
|---|---|---|
| Energy | 31 kcal | — |
| Protein | 1.0 g | — |
| Total Fat | 0.3 g | — |
| Carbohydrates | 6.0 g | — |
| Dietary Fiber | 2.1 g | — |
| Vitamin C | 190 mg | 211% |
| Beta-carotene | 2379 µg | — |
| Lycopene | 484 µg | — |
| Vitamin B6 | 0.29 mg | 17% |
| Folate | 46 µg | — |
| Potassium | 211 mg | — |
Health Benefits
1. Vitamin C — the benchmark
Red capsicum contains 190mg of Vitamin C per 100g, making it the richest common Vitamin C food source available to most Indian consumers. For comparison: orange contains 53mg/100g; lemon juice contains 53mg/100ml; and green capsicum contains approximately 80mg/100g. A single medium red capsicum (~120g) provides more than double the adult daily recommended Vitamin C intake.
Vitamin C functions as the primary water-soluble antioxidant in human plasma. It regenerates Vitamin E (the fat-soluble antioxidant), is essential for collagen synthesis (skin, cartilage, wound healing), enhances iron absorption from plant foods by converting ferric iron to the more absorbable ferrous form, and supports multiple steps in immune function including neutrophil activity and T-cell proliferation.
2. Beta-carotene and Vitamin A
Red, yellow, and orange capsicum contain significant beta-carotene: 2379µg per 100g in red capsicum versus near zero in green. Beta-carotene is a provitamin A carotenoid — the body converts it to retinol (Vitamin A) on demand. Vitamin A is essential for vision (particularly night vision), immune function, skin barrier integrity, and reproductive health.
Beta-carotene absorption is fat-soluble — consuming capsicum with ghee, olive oil, or any dietary fat significantly increases carotenoid absorption. A raw capsicum eaten plain has substantially lower carotenoid bioavailability than the same capsicum stir-fried with a small amount of oil.
3. Lycopene
Red capsicum contains a modest 484µg of lycopene per 100g — less than tomato (2573µg) but present in meaningful quantities. Lycopene contributes to cardiovascular protection through LDL oxidation inhibition. In the context of a diverse diet including both tomato and red capsicum, the cumulative lycopene intake is significant.
4. Vitamin B6 and brain function
At 0.29mg Vitamin B6 per 100g, a medium capsicum provides approximately 17% of daily needs. Vitamin B6 is essential for serotonin, dopamine, and GABA synthesis — neurotransmitters affecting mood, sleep, and stress regulation.
5. Low calorie, high antioxidant density
At 31 kcal per 100g, capsicum is one of the most nutrient-dense low-calorie foods available. The combination of Vitamin C, beta-carotene, lycopene, Vitamin B6, and folate with under 35 calories makes it excellent for calorie-managed diets where micronutrient density matters.
Red vs Green vs Yellow: What Actually Differs
Green capsicum is harvested unripe. At this stage: Vitamin C is ~80mg (vs 190mg in red), beta-carotene is negligible (vs 2379µg in red), lycopene is negligible, and the taste is bitter-grassy due to dominant chlorophyll.
Yellow capsicum is an intermediate stage (or a distinct variety). It has Vitamin C comparable to red (~183mg), lower beta-carotene (~200µg), but the highest zeaxanthin content of the three — important for eye health. Taste is mild and sweet.
The practical recommendation: For raw consumption or maximum nutrition, choose red. Green is acceptable for cooked dishes where its firmer texture and lower cost are advantages, but its nutritional inferiority to red is significant.
Side Effects and Who Should Avoid
Nightshade sensitivity: Like tomato and potato, capsicum is a nightshade (Solanaceae family). Those with nightshade sensitivity, inflammatory arthritis, or conditions where nightshade restriction is recommended should include capsicum in their elimination protocol.
GERD: Capsicum, particularly raw, can worsen acid reflux in susceptible individuals. Despite containing no capsaicin, the acid content and certain compounds can relax the lower oesophageal sphincter.
High FODMAP: Capsicum is classified as high FODMAP in moderate-to-large portions. Those with IBS and fructose malabsorption may find that more than 35g of capsicum triggers symptoms.
Organic vs Conventional
Capsicum appears on the EWG Dirty Dozen consistently. The thin edible skin, frequent raw consumption without peeling, and the fact that the entire fruit is eaten make pesticide residue a significant concern. Over 50 different pesticide residues have been detected on conventionally grown capsicum in USDA testing. Organic capsicum is strongly recommended, particularly for raw consumption.
How to Select and Store
Selecting: Choose capsicum that is firm, glossy, and heavy for its size. The skin should be free of wrinkles, soft spots, or discolouration. For red capsicum specifically, look for a deep, even red colour — partial colour change indicates incomplete ripening. The stem should be firm and green.
Storing: Whole capsicum keeps in the refrigerator for up to 2 weeks. Cut capsicum should be stored in an airtight container and used within 3-4 days. Capsicum does not freeze well raw but can be roasted or blanched before freezing for cooked applications.
Red vs Yellow vs Green Capsicum per 100g
| Parameter | Red Capsicum | Yellow Capsicum | Green Capsicum |
|---|---|---|---|
| Energy | 31 kcal | 27 kcal | 20 kcal |
| Vitamin C | 190mg | 183mg | 80mg |
| Beta-carotene | 2379µg | 200µg | 208µg |
| Lycopene | 484µg | 0µg | 0µg |
| Zeaxanthin | low | high | low |
| Sugar | 4.2g | 2.4g | 2.4g |
| Taste | Sweet, mild | Sweet, mild | Grassy, slightly bitter |
| Ripeness | Fully ripe | Partially ripe | Unripe |
Red capsicum is nutritionally the most valuable across virtually all measures. Yellow capsicum offers unique zeaxanthin for eye health. Green capsicum has the lowest nutritional density.
A fragrant spiced rice with bell peppers from Karnataka. The capsicum retains most of its Vitamin C when briefly stir-fried. A complete one-dish meal.
Key Ingredients
2 cups cooked rice (cooled) · 2 medium capsicums (red and green), diced into 1cm pieces · 1 medium onion, thinly sliced · 1 tsp mustard seeds · 1 tsp urad dal · 8 curry leaves · 1 tsp sambar powder · 1/2 tsp turmeric · 2 tbsp grated fresh coconut · 2 tbsp coconut oil or ghee · Salt to taste · Lemon juice to finish
Home Test: Wax Coating and Artificial Colour Test for Capsicum
Steps
- 1 Hold a capsicum under bright light and observe the skin surface
- 2 Natural capsicum has a gentle, even sheen from its own natural wax coating
- 3 Rub the surface firmly with a dry white cloth
- 4 For red capsicum: cut in half and rub the inner flesh on white blotting paper
- 5 Soak the skin in warm water for 2 minutes and observe whether the water develops unusual colour
Pure / Pass
Cloth picks up only minimal residue. No thick waxy deposit. Inner flesh does not bleed colour onto blotting paper. Water remains clear. Capsicum has only its natural protective coating and is genuine in colour.
Adulterated / Fail
Thick waxy or oily residue on cloth, or the inner flesh bleeds vivid red colour onto dry paper, or water turns strongly red — indicates artificial dye has been applied to enhance colour of lower-quality capsicum. Wash vigorously or peel before eating.
Available at Organic Mandya
Organic Capsicum
No pesticide residues. No post-harvest wax coating. Maximum Vitamin C — 190mg per 100g.
Frequently Asked Questions
Q Is green capsicum as nutritious as red capsicum?
Is green capsicum as nutritious as red capsicum?
No — green capsicum is unripe red capsicum harvested early. It has less than half the Vitamin C of red (80mg vs 190mg), virtually no beta-carotene, no lycopene, and significantly less sugar and flavour. Red and yellow capsicum are the fully mature, nutritionally complete fruit. Green capsicum has its uses in cooking for texture and flavour, but it is not comparable to red as a nutrition source.
Q Does capsicum contain any spiciness or capsaicin?
Does capsicum contain any spiciness or capsaicin?
No. Capsicum (bell pepper) is a distinct variety of Capsicum annuum that contains no measurable capsaicin — the compound responsible for heat in chillies. This is due to a recessive gene mutation that prevents capsaicin synthesis. The word capsicum covers a broad genus including both sweet peppers and hot chillies, but in Indian vegetable markets the term specifically refers to the sweet bell pepper with no heat.
Q Should I eat capsicum raw or cooked for maximum Vitamin C?
Should I eat capsicum raw or cooked for maximum Vitamin C?
Raw for maximum Vitamin C. Vitamin C is heat-sensitive — boiling reduces it by 50-65%. Light stir-frying for 3-4 minutes reduces Vitamin C by about 20-30%. If you want the full 190mg per 100g, eat red capsicum raw in salads or sliced as a snack. If you prefer it cooked, stir-fry quickly at high heat and serve immediately — do not overcook or boil.
Q Can people with diabetes eat capsicum freely?
Can people with diabetes eat capsicum freely?
Yes. Red capsicum has only 31 kcal per 100g, 6g of carbohydrates, and a glycaemic index of approximately 15. The glycaemic load is very low. The high Vitamin C content may also support insulin sensitivity indirectly through antioxidant activity. There is no dietary restriction on capsicum for diabetics — it is an excellent low-calorie, nutrient-dense choice.
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.