In conclusion, E621, or monosodium glutamate, serves primarily as a flavor enhancer rather than a traditional preservative. While it enhances the taste of many processed foods, contributing to their palatability and potentially reducing food waste, it does not inhibit spoilage or extend shelf life in the same way traditional preservatives do. The safety of MSG has been affirmed by numerous health authorities, but ongoing discussions about food additives highlight the importance of consumer choice and transparency in labeling.
In the realm of fruit preservation, sodium metabisulfite acts effectively to inhibit the growth of bacteria, yeast, and molds that can cause spoilage. For instance, dried fruits like apricots and raisins are often treated with sodium metabisulfite to maintain their color and prevent unwanted fermentation. Without this treatment, dried fruits may become discolored and lose their appeal, ultimately leading to a decrease in marketability. The antioxidant properties of SMBS also help to prevent enzymatic browning, which is especially important in fresh-cut fruits and vegetables. By minimizing discoloration, sodium metabisulfite helps maintain the visual and taste qualities of these products.