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    Food Preservatives

    无水亚硫酸钠

    无水亚硫酸钠 – Food Preservatives product from Bio Green Foods

    关于此产品

    亚硫酸钠,分子式 Na2SO3,CAS 号为 7757-83-7,欧洲添加剂编号为 E221。无水级为白色、流动性良好的粉末,可溶于水,其水溶液呈弱碱性。与其他亚硫酸盐处理剂一样,它通过在溶液中提供亚硫酸根和二氧化硫发挥作用。

    它是常用亚硫酸盐处理剂中酸性最弱的一种,这正是选用它的依据。焦亚硫酸钠易于释放 SO2 并使 pH 值下降,适用于葡萄酒和果汁等酸性产品,但在中性或碱性体系中可能造成干扰。亚硫酸钠可提供相当的抗氧化和抗褐变保护,同时基本不改变 pH 值,因此用于酸化会损害产品的场合。其作用方式相同:还原氧气,抑制导致切分果蔬酶促褐变的多酚氧化酶,通过结合羰基阻断美拉德褐变,并抑制野生酵母和霉菌。过敏原要求与所有亚硫酸盐相同,以 SO2 计超过 10 mg/kg 时必须标示;此外,不得用于被视为维生素 B1 重要来源的食品,因为它会破坏维生素 B1。

    它用于马铃薯和蔬菜加工、干果、制糖精炼、酿造,以及用作加工助剂和抗氧化剂。

    Bio Green Foods 按含量、SO2 含量、铁、硒、砷和重金属等指标的规格供应食品级亚硫酸钠。

    规格

    CAS No.7757-83-7
    GradeConfirmed on enquiry

    应用

    Shelf-life formulationMould and yeast controlBakery, beverage and condiment processing

    Frequently Asked Questions

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    参考价格: $1.00–8.50/kg

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