PROBLEM TO BE SOLVED: To provide a humidity-dependent antibacterial powdery composition of excellent applicability wherein a volatile oily antibacterial substance can be contained in a high ratio, a process for producing the same, a humidity-dependent antibacterial food storing article, and a method of storing food.SOLUTION: The humidity-dependent antibacterial powdery composition as means of attaining the object is characterized in that it comprises a volatile oily antibacterial substance and a water-soluble film forming agent and the behavior of release of the antibacterial substance is changed depending on humidity. The process for producing the same is characterized in that a water-soluble film forming agent optionally together with a powder vehicle is dissolved and/or dispersed in water, subsequently a volatile oily antibacterial substance optionally together with an emulsifying agent is added to the solution and emulsified, and thereafter the obtained emulsion is spray dried into powder. The humidity-dependent antibacterial food storing article is characterized by carrying the humidity-dependent antibacterial powdery composition. The method of storing food is characterized in that the volatile oily antibacterial substance is released from the humidity-dependent antibacterial food storing article toward food lying in an atmosphere of 70% or higher humidity.COPYRIGHT: (C)2011,JPO&INPIT【課題】揮発性油状抗菌物質を高い割合で含ませることができ、使いやすさに優れた湿度依存型抗菌性粉末組成物、その製造方法、湿度依存型抗菌性食品保存用物品および食品の保存方法を提供する。【解決手段】湿度依存型抗菌性粉末組成物は、揮発性油状抗菌物質と水溶性フィルム形成剤を含んでなり、湿度に依存して前記抗菌物質の放出挙動が変化する。その製造方法は、水溶性フィルム形成剤と必要に応じて粉末賦形剤を水中に溶解および/または分散させた後、ここに揮発性油状抗菌物質と必要に応じて乳化剤を添加し、乳化処理することで得られた乳化液を噴霧乾燥して粉末化する。湿度依存型抗菌性食品保存用物品は、湿度依存型抗菌性粉末組成物を担持させてなる。食品の保存方法は、湿度が70%以上の雰囲気下にある食品に対し、湿度依存型抗菌性食品保存用物品から揮発性油状抗菌物質を放出させてなる。【選択図】なし
