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Related Experiment Video

Updated: Jun 26, 2026

Multi-analyte Biochip (MAB) Based on All-solid-state Ion-selective Electrodes (ASSISE) for Physiological Research

Multi-analyte Biochip (MAB) Based on All-solid-state Ion-selective Electrodes (ASSISE) for Physiological Research

Published on: April 18, 2013

Algal biosensor array on a single electrode.

Tetsu Tatsuma¹, Yutaka Yoshida, Isao Shitanda

¹Institute of Industrial Science, University of Tokyo, Komaba, Meguro-ku, Tokyo 153-8505, Japan. tatsuma@iis.u-tokyo.ac.jp

|January 29, 2009

Summary

Researchers developed an algal array biosensor to monitor photosynthetic activity and toxin inhibition. This novel approach uses a single potentiostat and LED array for efficient, real-time analysis of algal responses.

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Published on: September 19, 2017

Area of Science:

Environmental Science
Biotechnology
Sensor Technology

Background:

Photosynthetic activity in algae is a key indicator of environmental health and can be inhibited by various toxins.
Developing sensitive and efficient methods for monitoring algal photosynthetic activity is crucial for environmental toxin detection.
Existing methods may lack the specificity or real-time capabilities required for rapid toxin assessment.

Purpose of the Study:

To develop and validate a novel algal array biosensor for monitoring photosynthetic activity.
To assess the capability of the biosensor in detecting toxin-induced inhibition of algal photosynthesis.
To demonstrate the utility of a single-channel potentiostat coupled with an LED array for high-throughput algal analysis.

Main Methods:

An algal array was constructed on a single transparent electrode.
Photosynthetic activity of individual algal channels was measured using a single-channel potentiostat.
Successive light irradiation was applied using a light-emitting diode (LED) array to stimulate and measure photosynthetic responses.
The inhibitory effects of a specific toxin on algal photosynthetic activity were quantified.

Main Results:

The algal array successfully monitored the photosynthetic activity of each algal channel.
The biosensor demonstrated sensitivity in detecting toxin-induced inhibition of photosynthetic processes.
The system allowed for real-time, quantitative assessment of algal responses to light and toxin exposure.

Conclusions:

The developed algal array biosensor is a viable tool for monitoring algal photosynthetic activity.
This technology offers a sensitive and efficient method for detecting and quantifying toxin inhibition in aquatic environments.
The use of a single potentiostat and LED array provides a cost-effective and high-throughput platform for environmental monitoring.