Bacillus circulans: Benefits, Uses, and Where to Buy in the USA
- Stanislav M.
- Sep 26
- 3 min read
Introduction
Bacillus circulans is a naturally occurring soil bacterium known for its ability to produce plant-growth–promoting hormones, solubilize phosphorus, secrete industrial enzymes, and degrade organic waste. As a safe, eco-friendly microbe, it supports healthy crops, enhances nutrient cycling, and finds applications across agriculture, pharmaceuticals, food processing, and bioremediation. IndoGulf BioAG is a leading international producer and supplier of Bacillus circulans formulations, offering high-quality strains (1 × 10⁸ CFU/g and 1 × 10⁹ CFU/g) for global agricultural and industrial applications.
What Is Bacillus circulans?
Bacillus circulans is a Gram-positive, rod-shaped, spore-forming bacterium in the family Bacillaceae. It thrives in diverse environments—from agricultural soils to compost heaps—by producing enzymes (e.g., cellulases, proteases) and phytohormones (indoleacetic acid) that benefit plant and industrial processes.
Top Benefits
Soil Health Enhancement By secreting organic acids and phosphatases, B. circulans solubilizes insoluble phosphorus compounds, making phosphorus available to plant roots and improving overall soil fertility.
Plant Growth Promotion It produces indoleacetic acid (IAA), a natural auxin that stimulates root elongation, increases root hair formation, and enhances nutrient uptake, leading to stronger, more vigorous plants.
Enzyme Production B. circulans synthesizes a suite of industrially valuable enzymes—amylases, cellulases, proteases, xylanases—used in detergents, textile processing, and biofuel production for their high catalytic efficiency and stability.
Waste Treatment and Bioremediation With its robust enzymatic arsenal, B. circulans breaks down agricultural residues, pulp and paper effluents, and organic pollutants in wastewater, accelerating composting and reducing environmental load.
Applications Across Industries
Agriculture
Biofertilizer: Seed coating, soil drench, and foliar spray formulations deliver IAA and solubilized phosphorus for vegetable, fruit, and cereal crops.
Biocontrol: Competes with pathogens in the rhizosphere, reducing disease incidence.
Pharmaceuticals
Metabolite Exploration: Investigated for novel antibiotics, immunosuppressants, and bioactive peptides.
Drug Formulations: Enzymes from B. circulans aid in drug synthesis and modification.
Food Processing
Starch Hydrolysis: Amylases convert starch into fermentable sugars for brewing and baking.
Protein Processing: Proteases tenderize meat, clarify beverages, and improve dough properties.
Waste Management / Bioremediation
Organic Waste Degradation: Cellulases and xylanases facilitate composting of crop residues.
Effluent Treatment: Enzymatic breakdown of lignocellulosic waste in pulp, paper, and agricultural runoff.
Bacillus circulans vs. Other Bacillus Strains
Feature | B. circulans | B. subtilis | B. thuringiensis |
Phytohormone Production | High IAA secretion for root development | Moderate auxin production | Low auxin; insecticidal toxins |
Phosphorus Solubilization | Effective via organic acids and enzymes | Some solubilization capacity | Minimal phosphorus solubilization |
Enzyme Spectrum | Broad (cellulases, proteases, amylases) | Moderate (amylases, proteases) | Primarily chitinases |
Biocontrol Activity | Rhizosphere competitive exclusion | Biofilm formation; pathogen suppression | Insecticidal crystal proteins |
Industrial Applications | Textile, biofuel, detergent enzymes | Probiotic and feed additive | Biopesticide |
Where to Buy in the USA
Several agricultural and biotechnology suppliers offer Bacillus circulans formulations in powder or liquid form. Look for products labeled “1 × 10⁸ CFU/g” or “1 × 10⁹ CFU/g” with detailed application guidelines. Reputable vendors include IndoGulf BioAG—an international producer and supplier known for high-quality strains—and specialty biofertilizer companies. Always verify strain authenticity, CFU counts, and storage requirements (cool, dry conditions) before purchase.
Conclusion
Bacillus circulans stands out for its multifaceted benefits—boosting soil health, promoting plant growth, producing industrial enzymes, and treating organic waste. Whether you’re a farmer seeking eco-friendly biofertilizers or an industrial processor requiring robust enzymes, B. circulans offers a reliable, sustainable solution. With IndoGulf BioAG’s global supply network, accessing premium B. circulans products in the USA has never been easier.
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