One of the key reasons sulphur dioxide is popular as a food preservative is its potent antioxidant properties. In the presence of oxygen, foods can undergo oxidation, leading to spoilage, color change, and the loss of nutritional value. Sulphur dioxide effectively inhibits these oxidative processes, thus preserving the flavors, colors, and textures of various food items. This is particularly beneficial for dried fruits like apricots and raisins, which can maintain their vibrant colors and sweet flavors due to the presence of SO₂.
The cost of producing phosphoric acid is another critical determinant of its market price. Key production costs include raw materials, energy, labor, and transportation. For instance, fluctuations in the price of sulfuric acid—a primary feedstock used in the production of phosphoric acid—can lead to increased production expenses, impacting the overall price of phosphoric acid. Moreover, rising energy costs, driven by global oil prices or shifts in energy policies, can further exacerbate production costs.
Understanding Oxidation in Food
The Role of Soy Lecithin Emulsifier in Food and Beyond