Drumstick Tree (Moringa oleifera)

Macronutrients (per 100g fresh leaves): Protein: 6.7–9.4g (contains all essential amino acids, notably high in methionine and cysteine compared to other plant sources); Carbohydrates: 8.3–14.3g; Dietary fiber: 2.0–3.2g; Fat: 1.4–2.7g (rich in alpha-linolenic acid, an omega-3 fatty acid). Dried leaf powder is significantly more concentrated: Protein 24–28g/100g, Fiber 16–19g/100g. Key Micronutrients (per 100g fresh leaves): Calcium: 185–440mg (bioavailability ~8.8%, comparable to spinach due to oxalate content); Iron: 4.0–7.0mg (non-heme; enhanced absorption when consumed with vitamin C-rich foods); Potassium: 259–337mg; Magnesium: 42–147mg; Phosphorus: 70–112mg; Zinc: 0.6–1.3mg. Vitamins: Vitamin A (as beta-carotene): 6.78–18.9mg/100g dried leaf (retinol activity equivalent varies; bioconversion ratio ~12:1); Vitamin C: 51–220mg/100g fresh leaves (highly variable, degrades significantly upon drying to ~17mg/100g); Vitamin E (alpha-tocopherol): 10.0–16.2mg/100g dried leaf; Vitamin B1 (thiamine): 0.06–0.26mg; Vitamin B2 (riboflavin): 0.05–0.66mg; Folate: 40–51µg; Vitamin K: ~108µg/100g fresh leaves. Primary Bioactive Compounds: Isothiocyanates — moringa-specific glucosinolate 4-(α-L-rhamnopyranosyloxy)benzyl glucosinolate (glucomoringin) at 20–100mg/g dried leaf, which is enzymatically converted by myrosinase to moringin (4-RBITC), the principal bioactive isothiocyanate responsible for anti-inflammatory and NF-κB inhibitory activity; bioavailability is significantly enhanced when leaves are crushed or chewed before ingestion to activate myrosinase. Flavonoids: Quercetin 3-O-glucoside (100–580mg/100g dried leaf), kaempferol 3-O-glucoside (50–350mg/100g dried leaf), myricetin, and rutin — quercetin glycosides show ~20–30% oral bioavailability with peak plasma levels at 1–2 hours. Phenolic acids: Chlorogenic acid (50–200mg/100g dried leaf), gallic acid, ellagic acid, caffeic acid — chlorogenic acid bioavailability ~33% with significant first-pass metabolism. Other notable compounds: Niazirin and niazimicin (bioactive nitrile glycosides with reported anti-tumor properties); saponins; tannins (1.4–3.2%); phytosterols including beta-sitosterol (50–90mg/100g dried leaf) and stigmasterol; zeatin (a cytokinin, ~5–200µg/g dried leaf, reported to contribute to antioxidant and anti-aging effects). Antinutritional factors: Oxalates (430–1,600mg/100g dried leaf — may reduce calcium and iron bioavailability); phytates (2.5–3.1g/100g dried leaf — chelates minerals; reduced by cooking or fermentation); tannins (reduce protein digestibility by 2–10%); saponins (may irritate GI mucosa in high doses). ORAC antioxidant capacity: ~46,000–157,000 µmol TE/100g dried leaf powder, among the highest recorded for plant foods. Bioavailability notes: Heat processing (cooking, blanching) reduces vitamin C by 30–50% and partially inactivates myrosinase (reducing isothiocyanate yield by 50–60%), but improves mineral bioavailability by degrading oxalates and phytates by 20–40%. Consuming with a fat source enhances absorption of fat-soluble vitamins (A, E, K) and beta-carotene by 3–5 fold. Dried leaf powder retains most mineral and flavonoid content but loses significant vitamin C; shelf-stable for 6–12 months if stored away from light and moisture.