The Recommended Daily Allowance is 1.4 milligrams and good food sources are brown rice, wholegrains, wholewheat flour, yeast extract, nuts, beans, peas, cereals, potatoes and pork.

• 建议的每日津贴是1.；4毫克和良好的食物来源是糙米， wholegrains ， wholewheat面粉，酵母提取物，果仁，豆类，豌豆，谷物，马铃薯和猪肉。