In food processing, the optimal operating temperature for Bacillus Coagulans Powder can be divided into two scenarios: "fermentation/proliferation" and "high-temperature processing survival," with clearly defined practical ranges within the industry.
I. Fermentation/Proliferation: Enabling rapid sporulation and maximizing activity of the powder
This is the optimal temperature for production or fermentation applications, aiming to promote rapid growth of Bacillus and the formation of highly active spores.
- Optimal temperature range: 40–50℃ (most strains are optimally suited to around 45℃)
- At this temperature, Bacillus Coagulans Powder exhibits the fastest proliferation rate and the highest sporulation rate, consistently achieving a spore purity of over 85%, which is fundamental for subsequent high-temperature resistance.
- Growth slows below 35℃, and proliferation is inhibited above 55℃, making it unsuitable for fermentation and propagation.
II. High-Temperature Processing: Ensuring Spore Survival and Meeting Product Live Bacterial Count Standards
This is the optimal tolerable temperature for food production (baking, sterilization, boiling, etc.), aiming to minimize spore inactivation and preserve live bacteria.
- ≤80℃ (Short Time): Optimal Safe Temperature
• After 5 hours of treatment at 80℃, the survival rate can still reach 50%; pasteurization (72℃/15–30 seconds) results in almost 100% survival, making it ideal for hot filling and pasteurized beverages.
- 80–100℃: Acceptable Temperature (Controlled Time)
• Spores can still survive after 2 hours in a boiling water bath at 100℃, but the survival rate will drop to around 30%; recommended time ≤10 minutes, suitable for steaming and short-term boiling.
- 100–120℃: Extreme Tolerable Temperature (Must be Short Time)
• Dry heat at 120℃ for 30 minutes results in approximately 80% survival, but inactivation will occur rapidly after 1 hour; suitable for extrusion puffing and short-term high-temperature baking (e.g., 200℃/3–5 minutes).
- >120℃: Not recommended.
• Treatment at 150℃ for 30 minutes results in a survival rate of only 64%. Prolonged high temperatures will cause a large number of spores to become inactive, making it difficult to meet the required live bacteria count in the finished product.
III. Practical Temperature Recommendations for Different Food Processing Techniques
| Food Process | Recommended Temperature | Survival Performance |
|---|---|---|
| Pasteurization / Hot Filling | 70–75°C | 98%+ survival |
| Gummies / Jam Cooking | 70–80°C | 80%+ survival |
| Extrusion Processing | 120–140°C (short time) | 60%+ survival |
| Baking (cookies / biscuits) | 180–220°C (≤5 min) | 70%+ survival |
| Fermented Foods (yogurt / beverages) | 40–45°C | Optimal growth & sporulation |
IV. Key Practical Points
- Prioritize Spore Purity: Select Bacillus Coagulans Powder with a **spore production rate ≥ 85%**, as this is a prerequisite for heat resistance.
- More Stable Later Addition: Adding later in high-temperature processing (such as after baking or cooling after boiling) can increase the viable bacteria retention rate to over 80%.
- Matrix Protection: High-sugar, high-oil, and high-protein matrices can form a protective layer, resulting in a 15%–20% higher survival rate compared to low-fat, high-moisture products.
To put it simply: use 45℃ for fermentation, and process at ≤80℃ as much as possible. High temperatures must be controlled for a specific time to ensure that Bacillus Coagulans Powder functions stably in food.