Black bean (black turtle bean; Phaseolus vulgaris L., family Fabaceae)
Description
Legume with black seed coat, creamy flesh, and a thin skin; flavor is earthy–nutty.
Sold dry, canned (retorted), or ready-cooked chilled; staple in Latin American, Caribbean, and Mediterranean dishes.
Caloric value (per 100 g)
Dry: ~330–350 kcal; carbs ~58–63 g, protein ~21–24 g, fat ~1–2 g, fiber ~15–16 g.
Boiled, unsalted: ~120–150 kcal; carbs ~20–27 g, protein ~8–10 g, fat ~0.3–0.8 g, fiber ~6–9g.
Sodium naturally low; higher in brined/canned products (rinsing helps).
Common name: Black bean
Source plant: Phaseolus vulgaris L.
Kingdom: Plantae
Clade: Angiosperms
Clade: Eudicots
Order: Fabales
Family: Fabaceae
Genus: Phaseolus
Species: Phaseolus vulgaris L.
Note: Black bean is one of the best-known cultivars of Phaseolus vulgaris, characterized by small, shiny, intensely black seeds. It is widely used in Latin American, Caribbean and U.S. cuisine (e.g. feijoada, burritos, black bean soup).
Cultivation and growing conditions of black beans
Climate:
Prefers warm, temperate climates.
Sensitive to cold: late frosts and low temperatures at germination can severely affect development.
Typically grown as a spring–summer crop.
Exposure:
Requires full sun to ensure vigorous growth, uniform flowering and good pod set.
Soil:
Thrives in medium-textured, deep, well-drained soils.
Prefers slightly acidic to neutral pH (around 6–7).
Sensitive to waterlogging, which promotes root rot and fungal diseases.
Watering:
Needs a regular water supply at critical stages: emergence, flowering and seed filling.
Avoid strong alternation between drought and heavy irrigation, which can cause pod splitting and increase disease incidence.
Temperature:
Optimal germination when soil temperature is about 15–20 °C.
Optimal growth between about 18 and 28 °C.
Very high temperatures combined with drought can reduce pod set.
Fertilization:
As a legume, it fixes atmospheric nitrogen through root rhizobia, so it does not require heavy mineral nitrogen inputs.
Phosphorus, potassium and micronutrients are more important to support flowering and seed development.
Incorporation of compost or well-rotted manure before sowing is useful, especially in poor soils.
Crop management:
Early weed control is important while seedlings are still small and not very competitive.
Mulching can help maintain soil moisture and reduce weed growth.
Climbing varieties need supports; dwarf types do not.
Crop rotation:
Fits very well into rotations with cereals and other non-legume crops.
Helps improve soil fertility through nitrogen fixation and crop residues.
Propagation:
By seed, with direct sowing once frost risk has passed and the soil is sufficiently warm.
Key constituents
Proteins of good legume quality (rich in lysine, limited in methionine/cysteine).
Starch (varietal amylose/amylopectin), dietary fiber (insoluble/soluble), and resistant starch (RS), which increases upon cooling.
Polyphenols in the black seed coat: anthocyanins (e.g., cyanidin-3-glucoside), proanthocyanidins/flavonols.
Minerals (Fe, Mg, K), folate, and B vitamins.
Anti-nutritional factors reduced by processing: phytates, trypsin inhibitors, lectins (PHA), α-galactosides (raffinose/stachyose).
Technical markers: hydration capacity (mL/g), cooking time, color L*a*b*, uniformity/defects.
Production process
Dry commodity: cleaning, optical sorting, grading, destoning/metal removal, barrier packaging.
Ready-cooked/canned: soaking (sometimes light brine), blanching, fill with cover liquid, retort sterilization, cooling, inspections (drained weight, vacuum, seam integrity).
Variants: sprouting or pressure cooking to improve digestibility and reduce anti-nutrients.
Sensory and technological properties
Soaking 6–12 h or hot-soak shortens cook time; acids and hard water (Ca²⁺/Mg²⁺) slow softening.
Small amounts of baking soda or brining may cut time, but excess can fragilize skins and affect flavor.
Hard-to-cook phenomenon in old/warm-stored lots is mitigated by pressure cooking.
Food uses
Soups/stews (feijoada, black bean soup), chili, burritos/tacos, rice & beans, salads, plant-based burgers, purees/spreads.
Typical inclusions: as main protein 20–40% of finished dish; in mixes/sides 10–30%.
Aquafaba (cook liquor) can serve as emulsifier/foaming agent.
Nutrition and health
Source of plant protein, fiber, and folate; GI generally low–medium, further reduced by cooling (↑ RS) and by adding fat/protein to the meal.
Other components: Salicylic acid (1), iron and zinc (2), The flavonol glycosides phenolic compounds found in common beans possess antimicrobial, anti-inflammatory and ultraviolet radiation (UVR) protective properties (3),
Rinsing canned beans can lower sodium.
Lectins/inhibitors: thorough cooking (boil/retort) inactivates them—avoid undercooking.
Phytates may reduce Fe/Zn/Ca bioavailability; soaking, sprouting, and fermentation lower them.
α-galactosides can cause gas; soak & refresh water, use α-galactosidase enzymes, or pressure cook.
Lipid profile
Very low total fat; typical pattern PUFA (linoleic) ≥ MUFA (oleic) > SFA.
Health note: favoring MUFA (monounsaturated fatty acids) and PUFA (polyunsaturated fatty acids) over SFA (saturated fatty acids) is generally favorable/neutral for blood lipids; impact here is limited due to low fat.
TFA industrial absent; MCT not characteristic.
Quality and specifications (typical topics)
Moisture (dry beans) ≤14–16%; size grade and uniformity; defects (breaks, spots, damaged seeds) within limits.
Water absorption (mL/g), standardized cooking time, texture (shear/rupture force), color and color loss during cooking.
Freedom from pests (bruchids), foreign matter, stones/metals; pesticides/metals within limits; mycotoxins typically not critical but monitored.
For canned: drained weight, declared salt, pH, commercial sterility, vacuum and container integrity.
Storage and shelf-life
Dry: store cool/dry/dark; avoid high temperatures to reduce hard-to-cook. Typical shelf-life 12–24 months; apply FIFO.
Canned/ready-cooked: 24–36 months unopened; once opened, refrigerate and consume within 3–4 days.
Allergens and safety
Legumes are not major EU allergens, but allergies/cross-reactivity exist (e.g., peanut/soy).
Ensure adequate cooking to inactivate lectins; avoid raw or undercooked consumption.
Manage CCP for foreign bodies, commercial sterility (for canned), and hygiene.
INCI functions in cosmetics
Listings: Phaseolus Vulgaris Extract / Seed Extract (limited use).
Potential roles: mild skin conditioning/antioxidant; verify safety and formula stability.
Troubleshooting
Excessive cook time/hard cores: longer soak, use soft water, light brine or pressure cook; avoid acids early.
Burst skins: excess agitation or too little sodium during soak; try gentle brining.
Flat flavor: finish with acid (lime/vinegar) and umami (onion, bay, kombu); salt toward the end.
Gas/bloating: soak + change water, rinse canned beans, use α-galactosidase, cool after cooking to raise RS.
Sustainability and supply chain
Nitrogen-fixing crop reduces need for N fertilizers; lower carbon footprint than animal proteins.
Processing: reuse aquafaba; treat effluents to BOD/COD targets; recyclable packaging; full traceability under GMP/HACCP.
Conclusion
Black beans combine protein, fiber, and polyphenols with broad culinary versatility. Fresh raw material, proper soak/cook, and tight quality control deliver tender, safe, and flavorful products.
Mini-glossary
RS — Resistant starch: starch fraction not digested; increases after cooling, may temper glycemic response.
GI — Glycemic index: post-meal glucose response; low–medium for black beans, influenced by recipe and cooling.
SFA — Saturated fatty acids: excess may raise LDL; low in beans.
MUFA — Monounsaturated fatty acids (e.g., oleic): generally favorable/neutral for blood lipids; low in beans.
PUFA — Polyunsaturated fatty acids (n-6/n-3): beneficial when balanced; low in beans.
TFA — Trans fatty acids: avoid industrial TFA; absent in non-hydrogenated legumes.
ALA — Alpha-linolenic acid (n-3): present only in traces in legumes; limited overall impact.
EPA/DHA — Long-chain n-3 fatty acids typical of fish; absent in legumes.
MCT — Medium-chain triglycerides: not characteristic of legumes.
GMP/HACCP — Good Manufacturing Practice / Hazard Analysis and Critical Control Points: hygiene and preventive-safety systems with defined CCP.
CCP — Critical control point: step where a control prevents/reduces a hazard.
BOD/COD — Biochemical/Chemical oxygen demand: indicators of wastewater impact.
FIFO — First in, first out: inventory rotation using older lots first.
