Damage preservatives.. delay the growth of microorganisms or inhibit their growth. Sulfur dioxide, a preservative and anti-oxidants

These materials are either delaying the growth of microorganisms or prevent their growth, and thus be able to prolong the storage of foods becomes foods that spoil quickly available to the consumer, and the price is high and can thus by these preservatives food preservation and consumption in the off-season, and some of these preservatives in more than one function, for example: sulfur dioxide is a preservative, and the material anti-oxidants, and bleaching agent that is both.