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中国生物防治学报 ›› 2023, Vol. 39 ›› Issue (6): 1373-1383.DOI: 10.16409/j.cnki.2095-039x.2023.02.065

• 研究论文 • 上一篇    下一篇

淡紫拟青霉M-1羽碳双基双层微胶囊制备及工艺优化

谢小林1, 周莲1, 陈猛3, 李成江1, 王勇2, 刘玉敏1, 李燕旋1, 姚青3, 朱红惠1   

  1. 1. 广东省科学院微生物研究所/广东省菌种保藏与应用重点实验室/华南应用微生物国家重点实验室/广东省微生物菌种保藏中心, 广州 510070;
    2. 广东博沃特生物技术有限公司, 韶关 512000;
    3. 华南农业大学园艺学院, 广州 510642
  • 收稿日期:2023-06-09 出版日期:2023-12-08 发布日期:2023-12-20
  • 通讯作者: 朱红惠,博士,研究员,E-mail:zhuhh@gdim.cn。
  • 作者简介:谢小林,博士,高级工程师,E-mail:xiexiaolin198606@sina.com;周莲,硕士,高级工程师,E-mail:1074923873@qq.com。
  • 基金资助:
    广州市科技计划项目(202201011832);“十四五”广东省农业科技创新十大主攻方向“揭榜挂帅”项目(2022SDZG09); “十四五”广东省农业科技创新九大主攻方向“揭榜挂帅”项目(2023SDZG09); 2022 年省级乡村振兴战略专项资金种业振兴项目(2022-440000-43010104-9463);韶关市科技计划项目(210806164532037)

Preparation and Process Optimization of Feather Carbon-based Bilayer Microcapsules of Paecilomyces lilacinus M-1

XIE Xiaolin1, ZHOU Lian1, CHEN Meng3, LI Chengjiang1, WANG Yong2, LIU Yumin1, LI Yanxuan1, YAO Qing3, ZHU Honghui1   

  1. 1. Guangdong Institute of Microbiology/Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application/Guangzhou Provincial Open Laboratory of Microbial New Application Technique/State Key Laboratory of Applied Microbiology, South China (The Ministry-Province Joint Development), Guangzhou 510070, China;
    Guangdong Bowote Biotechnology Co., LTD, Shaoguan 512000, China;
    3. South China Agricultural University, College of Agriculture, Guangzhou 510642, China
  • Received:2023-06-09 Online:2023-12-08 Published:2023-12-20

摘要: 淡紫拟青霉在线虫生物防治上表现出巨大的潜力,但现今产品货架期短、土壤定殖率低及生防效果不稳定限制其大规模市场应用。为解决上述问题,建立淡紫拟青霉M-1微胶囊最佳包埋工艺,本研究发展了喷雾法结合钙离子固化法,通过单因素及响应面试验优化确定淡紫拟青霉M-1微胶囊制备的最佳工艺条件,得到最佳工艺参数为:海藻酸钠添加量3.183%、菌粉与海藻酸钠溶液的质量比1.71:100、膨化鸡羽毛粉添加量4%、活性碳添加量4%、进料流量为3.7 L/h、Cacl2浓度为3%、壳聚糖浓度为0.858%,在此优化条件下制备的微胶囊于不同环境下存储,微胶囊剂型菌株稳定性均优于粉剂剂型菌株,室温下存储12个月,仍保存20%以上活菌数。土壤定殖试验表明,不同淡紫拟青霉M-1剂型土壤定殖效果为:羽碳双基双层微胶囊>碳基双层微胶囊>粉剂。由此可见,该工艺解决淡紫拟青霉大规模市场应用的瓶颈问题,具有较高的应用价值。

关键词: 淡紫拟青霉, 微胶囊, 根结线虫, 定殖率, 响应面试验

Abstract: Paecilomyces lilacinus has shown great potential in biological control of nematodes. However, its large-scale market application is limited by short product shelf life, low soil colonization rate, and unstable biocontrol effect. To solve these problems, this study developed a spray method combined with calcium ion solidification method to establish the best embedding process for P. lilacinus M-1 microcapsules. The optimal process conditions for preparing P. lilacinus M-1 microcapsules were determined by single-factor and response surface experiments through optimization. The best process parameters were: sodium alginate addition 3.183%, mass ratio of spores to sodium alginate solution 1.71:100, expanded feather powder addition 4%, activated carbon addition 4%, feed flow rate 3.7 L/h, CaCl2 concentration 3%, chitosan concentration 0.858%. Under this optimized condition, the stability of microcapsule strains in different environments was better than that of powder strains. Microcapsules are stored at room temperature for 12 months and still retain more than 20% of the total viable count. Soil colonization experiments showed that the soil colonization effects of different P. lilacinus M-1 formulations were as follows: feather carbon-based bilayer microcapsules > carbon-based bilayer microcapsules > powder. Therefore, this process solves the bottleneck problem of large-scale market application of P. lilacinus and has high application value.

Key words: P. lilacinus, microcapsule, root-knot nematode, colonization rate, response surface experiments

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