Survey of residue levels of organic solvents in "existing food additives" and health food materials by head-space GC.

Organic solvent residue levels in "Existing Food Additives" (n = 145), health food materials (n=23), and commercial health food products (n=19) were surveyed. Ethanol was the dominant solvent found in the samples, suggesting its use in the manufacturing process. Methanol, acetone, 2-propanol and ethyl acetate was also found. No residual solvent exceeded the limits set by the Food Sanitation Law.