The methods, uses, and advantages of adding nisin to fruit juice beverages are as follows:
1. Methods of Use
·Dissolution Preparation: Nisin dissolves more effectively in low pH conditions. It is recommended to use 0.02 mol hydrochloric acid, dilute acetic acid, dilute citric acid, or distilled water (boiled and cooled) to prepare a 5% nisin solution with a pH of approximately 3-4.
·Addition to Food: The prepared nisin solution should be added to the fruit juice beverage in the appropriate quantity and thoroughly mixed. It can also be added using a stepwise enlargement method or dissolved in a small amount of juice or broth before mixing into the beverage.
·Compound Use: Nisin can be used in combination with other preservatives to enhance its preservative effect.
2. Uses
·Preservation: Nisin, as a natural food preservative, effectively inhibits and kills thermophilic Bacillus, Bacillus cereus, Staphylococcus aureus, Listeria, Clostridium botulinum, and other Gram-positive bacteria, including their vegetative cells and spores, thereby extending the shelf life of fruit juice beverages.
·Quality Maintenance: Adding nisin can reduce the sterilization temperature and shorten the sterilization time of fruit juice beverages, helping to preserve the original nutritional content, flavor, and color of the juice.
3. Advantages
·Efficient and Safe: Nisin is a highly efficient, safe natural bio-preservative. It can be degraded by digestive enzymes into amino acids, leaving no residue. It does not affect probiotics in the human body, does not induce resistance, and does not cause cross-resistance with other antibiotics.
·Non-toxic and No Side Effects: Nisin has undergone rigorous safety evaluations and is considered a food additive with no toxic side effects, making it safe for use in fruit juice beverages and other foods.
·Eco-friendly and Energy-saving: Since nisin reduces the sterilization temperature and time for fruit juice beverages, it helps lower energy consumption and minimize environmental pollution.
·Wide Application: Nisin is not only suitable for fruit juice beverages but also has broad applications in meat products, dairy products, canned foods, seafood, condiments, brewing processes, baked goods, convenience foods, and more.
Adding nisin to fruit juice beverages is an efficient, safe, and eco-friendly method of preservation with significant advantages and potential applications.