通过封装改善生物控制子的热耐受性,Akanthomyces lecanii,通过封装
Paul W Baker1, Ephraim Nuwamanya2, Adam Charlton1
1Biocomposites Centre, Bangor University, Deiniol Road, Bangor, Gwynedd LL57 2UW, Wales, United Kingdom.
FEMS microbiology letters
|June 16, 2025
概括
在专门的珠子中封装Akanthomyces lecanii子显著提高了它们的耐热性. 这一突破可以在用于生物控制的高温加工过程中保护虫病原菌子.
科学领域:
- 农业科学 农业科学
- 生物技术是生物技术.
- 菌类学 菌类学是指菌类学.
背景情况:
- Akanthomyces lecanii是一种具有生物控制潜力的虫害病原菌.
- 在造薄膜挤出中进行高温处理 (150°C),可以破坏真菌子.
- 自由的A. lecanii子具有60°C的耐热极限.
研究的目的:
- 开发一种方法来保护A. lecanii子在薄膜挤出过程中免受高温的影响.
- 通过封装来提高A. lecanii子的耐热性.
主要方法:
- 子被封装成珠子使用凝,纤维素和Cel-fine.
- 珠子经过冷干燥,然后在热甘油 (50°C-100°C) 中进行热处理.
- 使用热处理后的板计数来评估子活力.
主要成果:
- 某些封装组合保护了子,允许在100°C热处理后生存.
- 封装可以提高子的耐热度,高达40°C.
- 一种特定的配方 (2%凝,0.4%纤维素,0.4%Cel-fine) 是最优的.
结论:
- 封装在冷珠中是一种有效的策略,可以提高A. lecanii子的耐热性.
- 这种方法可以将可行的虫病菌纳入生物控制膜中.
- 需要进一步的研究来评估长期储存的稳定性和有效性.
更多相关视频
10:10Mass Production of Entomopathogenic Fungi, Metarhizium robertsii and Metarhizium pinghaense, for Commercial Application Against Insect Pests
Published on: March 31, 2022
7.3K
05:45Author Spotlight: Process Development for the Spray-Drying of Probiotic Bacteria and Evaluation of the Product Quality
Published on: April 7, 2023
3.7K
相关概念视频
Endospores and Sporulation
429
Endospores are specialized, dormant cells primarily formed by Gram-positive bacteria, including Bacillus and Clostridium, enabling survival under extreme environmental conditions. Due to their unique composition and formation process, these structures are highly resistant to physical and chemical insults, such as extreme heat, ultraviolet and ionizing radiation, desiccation, and toxic chemicals. Rare instances of endospore-like structures have also been observed in some Gram-negative bacteria,...
429
Physical Methods for Controlling Microbial Growth: Temperature
243
Heat is a widely used method to control microbial growth by targeting and denaturing cellular proteins, thereby killing or inactivating microbes. This method's effectiveness is quantified using parameters such as the thermal death point (TDP), thermal death time (TDT), and decimal reduction time (D value). TDP represents the lowest temperature at which all microorganisms in a liquid suspension are eliminated within 10 minutes, whereas TDT is the time necessary to achieve sterilization at a...
243
Gene Regulation During Sporulation
77
Sporulation is a complex developmental process that allows certain Gram-positive bacteria, such as Bacillus subtilis and Clostridium species, to survive extreme environmental conditions. This process is tightly regulated by a series of signaling cascades and transcriptional controls, ensuring the formation of a highly resistant endospore.Sporulation is triggered by unfavorable conditions, such as nutrient depletion, and is governed by a phosphorelay system. One of the sensor kinases, such as...
77
