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BioVegetin Products, Inc., Chicago.
Finely powdered mixture of dehydrated spinach, tomatoes, carrots and irradiated yeast.
Fresh spinach freed of roots and stems is mechanically washed and placed on cloths on wire trays, which are run through tunnels of warm filtered air not exceeding 71 C. The dry spinach is pulverized and stored in drums. Fresh carrots are mechanically washed, peeled, again washed and subsequently treated as the spinach. Tomatoes, trimmed by hand and washed, are processed as described above. Irradiated yeast (not less than 2,500 U. S. P. vitamin units per gram) is autoclaved for twenty minutes at 17 pounds pressure to kill the yeast. The powdered ingredients are mixed in definite proportions, sifted, and packed in jars.
Analysis (submitted by manufacturer).—
3.3 per gram; 94 per ounce.
Assay shows 400 U. S. P. vitamin D units per gram.
Committee on Foods. JAMA. 1935;105(18):1431. doi:10.1001/jama.1935.02760440041012