A method for lipase co-precipitation in a biodegradable protein matrix.

Area of Science:

• Biotechnology
• Materials Science
• Food Science

Background:

• Immobilization of active ingredients is crucial for various industries.
• Conventional methods often involve organic solvents or harsh conditions.
• Developing eco-friendly and efficient immobilization techniques is a key challenge.

Purpose of the Study:

• To present a novel CO(2)-aided co-precipitation method for immobilizing active ingredients.
• To utilize glycinin, a biodegradable protein from soybean, as a matrix for immobilization.
• To demonstrate the efficacy of this method using lipase from Candida rugosa.

Main Methods:

• Active ingredients were co-precipitated with glycinin using CO(2) under isoelectric conditions.
• The enzyme lipase from Candida rugosa was used as a model active ingredient.
• Enzymatic activity of immobilized lipase was assessed under various pH conditions.

Main Results:

• Successful co-precipitation of active lipase into the glycinin protein matrix.
• Immobilized lipase retained significant lipase and esterase activity across different pH levels.
• In some cases, immobilized lipase exhibited higher activity than the crude enzyme, suggesting a protective effect of the glycinin matrix.
• The process avoided organic solvents and precipitants, simplifying downstream processing.

Conclusions:

• The CO(2)-aided co-precipitation with glycinin is an effective and novel method for immobilizing active ingredients.
• The resulting binary precipitate, containing active lipase, is food-grade and suitable for food or pharmaceutical applications.
• This method offers a potentially simplified downstream process and avoids hazardous chemicals.