Canned vegetables and fruits
Canned vegetables and fruits are named differently depending on their ingredients. Generally, fruit canned goods are made from a variety of fruits, including yellow peaches, apples, lychees, strawberries, hawthorns, and others. The main products include canned yellow peaches, canned strawberries, canned jackfruit, and canned mandarins, among others.
Sterilization Characteristics of Vegetable and Fruit Canned Products
1. Microbial inactivation:
This process effectively eliminates harmful microorganisms, including bacteria, yeasts, and molds. Moderate disinfection measures can also effectively inhibit the growth of Clostridium botulinum, a bacterium capable of producing highly toxic substances.
2. Sensory changes:
Although sterilization effectively eliminates microorganisms, it may affect the sensory characteristics of food—such as aroma, taste, color, and texture. We are always committed to helping food manufacturers strike a balance between ensuring product safety and preserving desirable sensory attributes.
3. Acidic and Alkaline Foods:
Acidic foods, such as tomatoes and citrus fruits, naturally resist botulism due to their low pH. Alkaline foods, like certain vegetables, require more rigorous sterilization. These foods have higher pH levels and are therefore more susceptible to contamination by botulism.
Precautions for Sterilization of Canned Vegetables and Fruits
Suitable sterilization technology:
Thermal sterilization is the most commonly used method for canned foods. Sterilization is typically carried out at temperatures ranging from 105°C to 121°C. This process is also referred to as high-pressure sterilization because it is conducted under elevated pressure.
Sterilization time:
The specific temperature and duration depend on the type of food, the size of the jar, the canning method used, and its acidity level (pH).
Cooling process:
After sterilization treatment, to ensure stable product quality, the canned goods will enter the cooling stage. This stage can be carried out either by spray-water cooling or by direct cooling with chilled water, both of which effectively enable rapid cooling of the canned goods.
Quality Control:
Check canned products for any signs of contamination or spoilage. Properly sealed cans can prevent recontamination during storage.
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