Bruhn John C, Franke Antoine A
Cooperative Extension and Department of Food Science and Technology, University of California, Davis, California 95616.
J Food Prot. 1985 May;48(5):397-399. doi: 10.4315/0362-028X-48.5.397.
In 378 samples of milk collected from farms and silos outside California, iodine varied from 30 to 3484 μg/kg and averaged 499 μg/kg. In a previously reported study, iodine in 1021 samples of milk collected from farms in California varied from 22 to 4048 μg/kg and averaged 328 μg/kg. Of samples collected outside California, 68.0% were below 500 μg/kg; of samples collected in California 83.4% were below. Volume weighted averages were calculated for both sets of samples. The volume weighted average outside California was 438 μg/kg and inside California was 316 μg/kg. While some farms do produce milk containing high (more than 500 μg/kg) concentrations of iodine, dilution of that milk with milk lower in iodine results in finished fluid and manufactured products low in iodine; thus it is unlikely that any population group purchasing processed dairy foods at the retail level in the USA will be exposed to excessive concentrations of iodine in the dairy products they consume. However, it is possible that some farm families using only the milk produced on their farms might be at risk.
在从加利福尼亚州以外的农场和筒仓采集的378份牛奶样本中，碘含量在30至3484微克/千克之间，平均为499微克/千克。在之前报道的一项研究中，从加利福尼亚州农场采集的1021份牛奶样本中，碘含量在22至4048微克/千克之间，平均为328微克/千克。在加利福尼亚州以外采集的样本中，68.0%低于500微克/千克；在加利福尼亚州采集的样本中，83.4%低于该值。对两组样本都计算了体积加权平均值。加利福尼亚州以外的体积加权平均值为438微克/千克，加利福尼亚州以内的为316微克/千克。虽然一些农场确实生产含碘量高（超过500微克/千克）的牛奶，但用含碘量低的牛奶稀释这种牛奶会导致成品液体和制成品的碘含量低；因此，在美国零售层面购买加工乳制品的任何人群不太可能接触到其消费的乳制品中过量的碘浓度。然而，一些仅使用自家农场生产的牛奶的农户家庭可能面临风险。
