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September 14, 1940

The Vitamin B1 Content of Foods in Terms of Crystalline Thiamin

JAMA. 1940;115(11):958. doi:10.1001/jama.1940.02810370066032

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This valuable bulletin gives the vitamin B1 content of some 100 foods commonly included in the American dietary in terms of international units and micrograms per hundred grams of food (edible portion). This compilation of data is especially useful since the vitamin B1 content of foods reported in the earlier literature was often expressed in units not always convertible to international units. The daily requirement of a normal adult for vatimin B1 is considered to be about 400 international units. From this bulletin one can learn which foods are excellent, good, fair or poor sources of vitamin B1 and select a diet accordingly. Foods listed in the class "excellent" providing no less than 150 international units of vitamin B1 per hundred grams are dried lima beans, cow peas, rolled oats, peanuts, pork chop (lean portion), smoked ham and soybeans. Foods listed in the class "good,"

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