Displaying 1 results of Jacobine Impurities Jacobine impurities are a type of impurity found in tobacco products that can have harmful effects on human health. These impurities are formed during the curing process of tobacco leaves and can include compounds such as jacoline and jacolidine. Exposure to these impurities has been linked to various health issues, including lung cancer and respiratory disease. Efforts to reduce the levels of Jacobine impurities in tobacco products are ongoing in order to improve public health.