低GI玉米杂粮代餐粉产品研发

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随着人们生活方式和饮食习惯的快速变化，代谢或多重危险因素综合征（如肥胖、高血压、高血糖等）已成为现代社会日益关注的问题。医学上通常以血糖指数（GlycemicIndex，GI）作为衡量一个人血糖水平的重要参数[]。传统主食因其高GI特性，难以满足人们健康饮食的需求。临床研究表明，饮食疗法能有效减少患糖尿病及其并发症的机率，日常饮食中保持摄入低GI食物对

Antibacterial Effect of a New Strain of Acinetobacter calcoaceticus Ac O190 on Maize Leaf Spot Disease

ZHANG Xin1 ，WU Yimeng]，PEI Tianyi1，ZHANG Hanwen1，ZHANG Chunsheng]，ZOU Chengyu1 ， SONG Fuping²，LI Jiel

（1.Fungal Genetic Enginering Laboratory / College of Life Sciences，Northeast Agricultural University， Harbin l5003O，China；2.State Key Laboratory for Biology of Plant Diseases and Insect Pests/Institute of Plant Protection，Chinese Academy of Agricultural Sciences，Beijing 1oo193，China）

Abstract：In order to promote the development of non-traditional biocontrol bacterial resources for maize leaf spot disease，the plate confrontation method was used to test its antibacterial effect. The strain species were identified through 16S rDNA sequence analysis，and the antibacterial activity was tested using fermentation culture filtrate. Different temperatures and pH were designed to explore the environmental adaptability of the strain，and to clarify a bacterial species with biocontrol effect and its antibacterial effect on corn leaf spot disease.The results demonstrated that the tested strain was Acinetobacter calcoaceticus （designated as AcO19o），which exhibited approximately 50% inhibition against B . maydis. The strain thrived at 28-37°C （204号 and maintained robust growth at pH5.0 ，though its growth was slightly inhibited at pH9.0 .In conclusion， （A.calcoaceticus） Ac O190 displays promising antifungal eficacy and strong environmental adaptability， suggesting its potential as a biocontrol agent for further development.

Keywords：Acinetobacter calcoaceticus ； Bipolaris maydis ； antifungal activity; biocontrol bacteria于预防胰岛素抵抗和代谢综合征具有一定的积极作用[2]，因此开发兼具低GI、营养均衡且便捷化的替代食品具有重要现实意义。（剩余14018字）