Horacek Micha
AIT-Austrian Institute of Technology GmbH, Konrad-Lorenz-Straße 24, 3430 Tulln, Austria.
Department of Lithospheric Research, Vienna University, Josef Holaubek-Platz 2, 1090 Vienna, Austria.
Foods. 2023 Apr 7;12(8):1572. doi: 10.3390/foods12081572.
The geographic origin of salt is usually regarded as unimportant, as it is a one-quality product produced in vast quantities. However, certain salt brands, especially sea salt (fleur de sel), are sold at significantly higher prices. Thus, it is necessary to control the declared geographic origin of salt. Such controls are already frequently carried out for foodstuffs, but salt is an inorganic commodity. Thus, δS analysis combined with element concentration analysis was carried out. The results show very similar δS values for all sea salt samples, which is to be expected due to the homogenous marine δS value. Still, slightly higher values have been found in Mediterranean salt samples. Rock salt samples show differing δS values depending on the time they were formed, and if the salt samples are of marine or terrestrial origin. Terrestrial/continental salt samples are characterized by elemental patterns significantly differing from marine ones. However, within marine samples (sea salt and rock salt) there also exist differences enabling the differentiation of samples.
盐的产地通常被认为并不重要，因为它是一种大量生产的单一品质产品。然而，某些盐品牌，特别是海盐（花盐），售价要高得多。因此，有必要对盐所宣称的产地进行管控。此类管控在食品领域已频繁实施，但盐是一种无机商品。因此，进行了δS分析并结合元素浓度分析。结果显示，所有海盐样品的δS值非常相似，鉴于海洋δS值的均一性，这是意料之中的。不过，在地中海盐样品中发现了略高的值。岩盐样品的δS值因其形成时间以及盐样品是海洋来源还是陆地来源而有所不同。陆地/大陆盐样品的元素模式与海洋盐样品显著不同。然而，在海洋样品（海盐和岩盐）中也存在差异，能够区分不同的样品。
