AOAC Official Method 939.07 Beta-Ionone in Raspberry Concentrates Crystallographic Method II
First Action 1939
Final Action
A. Apparatus
(a) Steam generator filled with water.—Oil can holding 1 gallon (3.8 L) is convenient.
(b) Distillation flask.—Round-bottom boiling flask with standard taper 24/40 joint, capacity ca twice volume of sample to be used.
(c) Still head.—Adapter, 75° angle, with male connections standard taper 24/40 at bottom and side, and female connection 14/35 at top, with side arm lengthened and bent to fit vertical condenser.
(d) Spray tube.—Adapter, for use with Woulff bottles with standard taper joints; aeration tube with standard taper 14/35, holes in bulb ca 2mmdiameter, length of tubing such that when apparatus is set up, bulb is £20 mm above bottom of distilling flask.
(e) Condenser.—Coil type with female connection standard taper 24/40 at top with 250–300 mm jacket and outlet tube lengthened to ca 200mmto reach bottom of 500 mL Erlenmeyer receiving flask.
