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§170.18 相关食品添加剂的容许量(Tolerances for related food additives)

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放大字体  缩小字体 2011-09-25 08:53:34  来源:GPO  浏览次数:2759
核心提示:凡起相似或相关机理作用的食品添加剂,将被视为同一个类别,在没有相反证据如添加剂的毒理作用的情况下,将被视为相关的食品添加剂。每一类相关的食品添加剂的容许量,可按其中存在的一个普通成分来限量,或按所具有的生理活性来限量,或按所具有的相关食品添加剂的总量来限量。某种食品存在两种以上同一类食品添加剂的情况下,添加剂的总容许量按这一类食品添加剂中具有最低容许量的那个品种来定量。
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备注 凡起相似或相关机理作用的食品添加剂,将被视为同一个类别,在没有相反证据如添加剂的毒理作用的情况下,将被视为相关的食品添加剂。每一类相关的食品添加剂的容许量,可按其中存在的一个普通成分来限量,或按所具有的生理活性来限量,或按所具有的相关食品添加剂的总量来限量。某种食品存在两种以上同一类食品添加剂的情况下,添加剂的总容许量按这一类食品添加剂中具有最低容许量的那个品种来定量。

    §170.18 Tolerances for related food additives

      (a) Food additives that cause similar or related pharmacological effects will be regarded as a class, and in the absence of evidence to the contrary, as having additive toxic effects and will be considered as related food additives.

  (b) Tolerances established for such related food additives may limit the amount of a common component that may be present, or may limit the amount of biological activity (such as cholinesterase inhibition) that may be present or may limit the total amount of related food additives that may be present.

  (c) Where food additives from two or more chemicals in the same class are present in or on a food, the tolerance for the total of such additives shall be the same as that for the additive having the lowest numerical tolerance in this class, unless there are available methods that permit quantitative determination of the amount of each food additive present or unless it is shown that a higher tolerance is reasonably required for the combined additives to accomplish the physical or technical effect for which such combined additives are intended and that the higher tolerance will be safe.

  (d) Where residues from two or more additives in the same class are present in or on a food and there are available methods that permit quantitative determination of each residue, the quantity of combined residues that are within the tolerance may be determined as follows:

  (1) Determine the quantity of each residue present.

  (2) Divide the quantity of each residue by the tolerance that would apply if it occurred alone, and multiply by 100 to determine the percentage of the permitted amount of residue present.

  (3) Add the percentages so obtained for all residues present.

  (4) The sum of the percentage shall not exceed 100 percent.

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