A heat treatment apparatus and a heat treatment method using the same are disclosed. The multiple-antenna transmission system can be controlled, adjusted, configured, or reconfigured to produce desirable radiation beam patterns suitable for different types of applications. The wire-guide system is fastened to the nozzle. The powder may be used as a dietary supplement or combined with foodstuffs to form a food product suitable for consumption by animals or humans. An aromatic compound having at least two aromatic rings is incorporated in the film as a retardation increasing agent to obtain \u03bb4 in the wide wavelength region defined above. Also provided is a deodorizer comprising a polymer of phenol compounds having a styrene structure.