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Updated: Jun 28, 2026

Bioprospecting of Extremophilic Microorganisms to Address Environmental Pollution

Bioprospecting of Extremophilic Microorganisms to Address Environmental Pollution

Published on: December 30, 2021

Thermo-tolerant phosphate-solubilizing microbes for multi-functional biofertilizer preparation.

Cheng-Hsiung Chang¹, Shang-Shyng Yang

¹Institute of Microbiology and Biochemistry, National Taiwan University, Taipei 10617, Taiwan.

Bioresource Technology

|October 28, 2008

Summary

Thermo-tolerant microbes enhance biofertilizer production by increasing nutrient content and germination rates. Inoculating agricultural waste with these microbes offers a practical strategy for creating multi-functional biofertilizers.

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Area of Science:

Microbiology
Soil Science
Biotechnology

Background:

Biofertilizers improve soil health and plant growth.
Phosphate-solubilizing microbes are crucial for nutrient availability.
Thermo-tolerant microbes are advantageous for composting processes.

Purpose of the Study:

To isolate and characterize thermo-tolerant, phosphate-solubilizing microbes.
To evaluate the efficacy of these microbes in enhancing biofertilizer production.
To assess the impact of microbial inoculation on composting parameters and biofertilizer quality.

Main Methods:

Isolation and screening of bacteria, actinomycetes, and fungi from compost and biofertilizers.
Enzyme activity assays (amylase, CMCase, chitinase, pectinase, protease, lipase, nitrogenase).
Phosphate solubilization tests using various phosphate sources.
Monitoring composting parameters (temperature, pH, nutrient content, germination rate) in inoculated vs. non-inoculated biofertilizers.

Main Results:

Most isolates exhibited broad enzymatic activities and solubilized various phosphate forms.
Inoculated biofertilizers showed significantly higher temperature, ash content, pH, total nitrogen, soluble phosphorus, and germination rates.
Total organic carbon and C:N ratio decreased in inoculated biofertilizers.
Populations of phosphate-solubilizing and proteolytic microbes increased with inoculation.

Conclusions:

Thermo-tolerant phosphate-solubilizing microbes possess valuable enzymatic and P-solubilizing capabilities.
Inoculation with these microbes accelerates composting, improves biofertilizer quality, and enhances nutrient content.
Utilizing these microbes in agricultural and animal waste is a viable strategy for producing multi-functional biofertilizers.