最近出版的《过敏、气喘与免疫学年鉴》期刊发表的一份研究报告称,很多无灰粉笔含有“酪蛋白”成分,对牛奶过敏的孩子一旦接触这种产品就可能会诱发过敏反应。酪蛋白是一种牛奶蛋白不少标榜无灰、粉笔灰较少的粉笔都带有酪蛋白。当过敏儿童吸入这些含酪蛋白的粉笔灰颗粒时,就可能会诱发严重气喘或其他呼吸道过敏症。研究人员表示,尽管使用的是无灰、少灰的粉笔,但还 A recent study published in the Allergy, Asthma and Immunology Almanac found that many ash-free chalks contain “casein” ingredients, and allergies to milk may trigger an allergic reaction once they come into contact with the product . Casein is a milk protein Many advertised ash-free, chalk less chalk with casein. When allergic children inhale these casein-containing chalk dust particles, they may cause severe asthma or other respiratory allergies. The researchers said that despite the use of ashless, less gray chalk, but also