PROBLEM TO BE SOLVED: To provide an antibacterial agent for food having no effect on human body and excellent antibacterial and antiseptic effects by using calcium hydroxide powder containing natural materials such as shell or egg shell as raw materials, and a food container using the antibacterial agent for food.SOLUTION: An antibacterial agent for food having content of calcium hydroxide powder of 0.1 mass% or 7.0 mass% based on total mass of the antibacterial agent and mixture mass ratio of calcium hydroxide containing shell as a raw material and calcium hydroxide containing egg shell as a raw material of 9:1 or 5:5 is manufactured by mixing a calcium hydroxide powder manufactured by high temperature burning shell of bivalve such as scallop and egg shell and pulverizing the same with a chemical synthesis food additive such as silicon or polyvinyl alcohol, and applied or adhered to a surface of food containers or food trays.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2018,JPO&INPIT【課題】貝殻や卵殻などの天然素材を原料とした水酸化カルシウム粉末を用いて、人体に影響がなく、かつ優れた抗菌・防腐効果を有する食品用抗菌剤、および当該食品用抗菌剤を用いた食品容器を提供する。【解決手段】ホタテなどの二枚貝の貝殻、および卵殻を高温焼成し、これを微粉砕して成る水酸化カルシウム粉末を、シリコンやポリビニルアルコールなどの化学合成食品添加物と混合し、水酸化カルシウム粉末の含有量が抗菌剤の総質量に対し、0.1質量%ないし7.0質量%であり、貝殻を原料とする水酸化カルシウムと卵殻を原料とする水酸化カルシウムとの混合質量比率が、9:1ないし5:5であることを特徴とした食品用抗菌剤を生成し、これを食品容器や食品トレイの表面に塗布・粘着する。【選択図】図1
