Fermentation Strategies to Improve Soil Bio-Inoculant Production and Quality

Microorganisms

Maria Vassileva¹  Elena Flor-Peregrin¹  Antonia Galvez¹  Nikolay Vassilev¹  Stefan Shilev²  Loredana Canfora³  Stefano Mocali³  Pawel Trzcinski⁴  Eligio Malusà⁴  Lidia Sas-Paszt⁴ 

[1] Department of Chemical Engineering, University of Granada, C/Fuentenueva s/n, 18071 Granada, Spain;Department of Microbiology and Environmental Biotechnology, University of Agriculture-Plovdiv, 4000 Plovdiv, Bulgaria;Research Centre for Agriculture and Environment, Council for Agricultural Research and Economics, 00184 Roma, Italy;The National Institute of Horticultural Research, 96-100 Skierniewice, Poland;

关键词: biofertilizers;    biocontrol;    submerged and solid-state fermentations;    immobilized cells;    mycorrhiza;    optimization strategies;   

DOI  :  10.3390/microorganisms9061254

来源: DOAJ

【 摘 要 】

The application of plant beneficial microorganisms has been widely accepted as an efficient alternative to chemical fertilizers and pesticides. Isolation and selection of efficient microorganisms, their characterization and testing in soil-plant systems are well studied. However, the production stage and formulation of the final products are not in the focus of the research, which affects the achievement of stable and consistent results in the field. Recent analysis of the field of plant beneficial microorganisms suggests a more integrated view on soil inoculants with a special emphasis on the inoculant production process, including fermentation, formulation, processes, and additives. This mini-review describes the different groups of fermentation processes and their characteristics, bearing in mind different factors, both nutritional and operational, which affect the biomass/spores yield and microbial metabolite activity. The characteristics of the final products of fermentation process optimization strategies determine further steps of development of the microbial inoculants. Submerged liquid and solid-state fermentation processes, fed-batch operations, immobilized cell systems, and production of arbuscular mycorrhiza are presented and their advantages and disadvantages are discussed. Recommendations for further development of the fermentation strategies for biofertilizer production are also considered.

【 授权许可】

Unknown