Bacterial SCP from methanol in Kuwait: Product revovery and composition

Area of Science:

• Biotechnology
• Microbiology
• Biochemical Engineering

Background:

• Single-cell protein (SCP) production utilizes microbial biomass as a protein source.
• Methanol-utilizing bacteria, particularly aerobic thermophilic strains, are promising candidates for SCP.
• Optimizing biomass recovery is crucial for SCP yield and quality.

Purpose of the Study:

• To explain Kuwait Institute for Scientific Research's (KISR) involvement in SCP research.
• To evaluate different pilot plant harvesting methods for biomass recovery.
• To correlate harvesting procedures with the nutritional quality of the recovered biomass.

Main Methods:

• Utilized aerobic thermophilic/thermotolerant methanol-utilizing bacterial cultures.
• Investigated various pilot plant biomass harvesting procedures.
• Assessed product quality based on crude and true protein, moisture, ash content, ash mineral composition, and amino acid profiles.

Main Results:

• Mild heat-acid and acid-heat treatments emerged as the most suitable harvesting procedures.
• These methods demonstrated high recovery efficiencies for bacterial biomass.
• The recovered biomass exhibited suitable nutritional profiles, including protein content and amino acid composition.

Conclusions:

• Heat-acid and acid-heat treatments are effective for recovering high-quality SCP from methanol-utilizing bacteria.
• These optimized harvesting techniques contribute to efficient and nutritious biomass production.
• KISR's focus on these bacterial cultures and recovery methods supports advancements in SCP technology.