PURPOSE: A food preservative is provided to facilitate a use as a food preservative by effectively hindering the growth of meat processing food rancid microorganism. CONSTITUTION: A food preservative comprises an agrimony extract as an active ingredient. The agrimony extract uses agrimony as a pumping material, and the agrimony extract is extracted using water having an alkaline acidity and an ethanol aqueous solution as an extraction solvent. The alkaline acidity has a pH of 10-12. Food is a meat processed food. A composition for suppressing the growth of Weissella viridescens includes an agrimony extract as an active ingredient. A composition for suppressing the growth of Leuconostoc carnosum includes an agrimony extract as an active ingredient. [Reference numerals] (AA) Control group； (BB) Water； (CC) 50% ethanol； (DD) Water + ultrasound wave； (EE) 50% ethanol + ultrasound wave본 발명은 용아초 추출물을 포함하는 식품 보존제에 관한 것으로, 알카리성 산도의 추출용매를 사용하여 추출한 본 발명의 용아초 추출물은 육가공 식품 변패 미생물의 생육을 효과적으로 저해한다.
