| 摘要 |
<p>PURPOSE:To obtain a freshness-keeping agent having excellent freshness-keeping effect, free from the dissolution of manganese and useful for the preservation and transportation of fruits, flowers, vegetables, etc., by mixing an adsorbent carrying potassium permanganate with activated carbon and thermoplastic resin powder and forming the mixture under heating. CONSTITUTION:The objective freshness-keeping agent is produced by mixing an adsorbent (preferably zeolife, silica gel, alumina or activated carbon) supporting potassium permanganate with activated carbon and powder of a thermoplastic resin (preferably PE, PP, ethylene-vinyl acetate copolymer resin, polyethylene terephthalate or nylon), forming the mixture under heating and preferably covering the surface of the formed article with a sheet which may contain activated carbon.</p> |
