Characterization of Pseudomonas protegens SN15-2 microcapsule encapsulated with oxidized alginate and starch

Abstract

In order to meet the requirements of soil inoculants for release rate and biodegradability, oxidized sodium alginate (OSA) and starch to form a composite material used to encapsulate Pseudomonas protegens SN15-2. The results indicated that OSA microcapsules show higher degradation and release rate than alginate microcapsules because of the lower molecular weight of OSA. Meanwhile, increasing the proportion of starch within the maximum concentration range of 4% can further improve the release rate and degradability of the microcapsules. This encapsulation strategy has broad application prospects to meet the needs of soil inoculant production.

Graphical Abstract

Keywords:

• Biopolymers
• microcapsule
• oxidation
• Pseudomonas protegens
• sodium alginate
• starch

Compliance with ethical standards

The authors declare that there is no conflict of interest.

Additional information

Funding

This work was supported by the National Key Research and Development Program of China under Grant number [2017YFD020040]; the Project of Prospering Agriculture through Science and Technology of Shanghai, China under Grant Hu NongKeChuangZi (2018) No. 2-5.