**Steam sterilizers use the moist heat from high-pressure saturated steam, which can penetrate rice grains and kill bacteria, mold, and spores on the rice. So rice (especially packaged rice) can be sterilized using this method.**
Breaking it down into three points:
1. **Sterilization ability of saturated steam (moist heat sterilization principle)**
When saturated steam hits cold rice grains, it condenses into water and releases a lot of latent heat, heating the rice very quickly. In a moist heat environment, the proteins and enzymes in microorganisms are more likely to coagulate and denature. Even tough spores (like Bacillus cereus and Bacillus subtilis, which are the main culprits for rice going bad) can be killed. This is much more effective than dry heat sterilization. The common industrial condition is 121°C high-pressure steam.
2. **Steam has penetration, reaching inside the rice grains**
Rice grains have tiny pores and gaps, so steam can penetrate the rice pile or packaging, not just heating the surface, ensuring the center of each grain reaches sterilization temperature. This achieves overall commercial sterility and is the standard process for preserving convenient rice products (like soft canned rice).
3. **Rice itself is heat-resistant, suitable for moist heat sterilization**
Rice is mainly starch, which will only gelatinize at the right time and temperature, rather than rapidly breaking down. Industrial convenient rice is first cooked, sealed, and then sterilized in a steam sterilizer, allowing it to be stored at room temperature for a long time.
This is Sunny. If you need to sterilize food with a sterilizer, feel free to contact me.WeChat/WhatsApp+8615169670012
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