抄録
The quality of vitamin oil for export has so far been evaluated only by personal senses. A simple and rapid method for evaluation of vitamin oil applying color test wish p-quinone was devised. The principle of the method is as follows : 0.1% p-quinone solution in alcohol is added to acid-extract of vitamin oil. The color appearing after 5 minutes is compared with that of standard solution. The results obtained by this method with many samples of vitamin oils were in good agreement with those by the sensual method.
