Carbon paste biosensor based on crude soybean seed hull extracts for phenol detection

Area of Science:

• Biotechnology
• Biosensor Technology
• Enzyme Engineering

Background:

• Biosensors are crucial for detecting various analytes.
• Developing cost-effective and efficient biosensors is an ongoing research area.
• Soybean seed hulls represent an underutilized source of enzymes.

Purpose of the Study:

• To develop a novel biosensor utilizing enzyme extracts from soybean seed hulls.
• To evaluate the biosensor's performance in detecting hydrogen peroxide and phenol.
• To investigate the optimal conditions and influencing factors for biosensor activity.

Main Methods:

• Extraction of enzymes from soybean seed hulls.
• Immobilization of enzyme extracts onto a suitable substrate.
• Electrochemical or optical detection of hydrogen peroxide and phenol.
• Optimization of pH, temperature, enzyme loading, and mediator type.

Main Results:

• The developed biosensor demonstrated effective detection of hydrogen peroxide and phenol.
• Biosensor preparation was straightforward and cost-effective.
• The response time for detection was 50 seconds.
• Optimal performance was observed at pH 7.4 and 20°C, with narrow optimum ranges.
• A linear response was observed for phenol detection up to 500 microM.

Conclusions:

• Soybean seed hull enzyme extracts can be successfully utilized to create a functional biosensor.
• The biosensor offers a promising, inexpensive, and rapid method for detecting hydrogen peroxide and phenol.
• Further research may explore expanding the detection range and stability of the biosensor.