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Correction: Kang et al. Fluid Flow to Electricity: Capturing Flow-Induced Vibrations with Micro-Electromechanical-System-Based Piezoelectric Energy Harvester. <i>Micromachines</i> 2024, <i>15</i>, 581.

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  1. Home
  3. Portable And Point-of-care Testing Approach For Determining Soil Extracellular Enzyme Activities.
  1. Home
  3. Portable And Point-of-care Testing Approach For Determining Soil Extracellular Enzyme Activities.

Related Experiment Video

High-throughput Fluorometric Measurement of Potential Soil Extracellular Enzyme Activities
12:33

High-throughput Fluorometric Measurement of Potential Soil Extracellular Enzyme Activities

Published on: November 15, 2013

Portable and Point-of-Care Testing Approach for Determining Soil Extracellular Enzyme Activities.

Xu Han1,2,3, Fangzhou Zhang2, Ruirui Chen1,4

  • 1State Key Laboratory for Development and Utilization of Forest Food Resources, Nanjing Forestry University, Nanjing 210037, China.

Micromachines
|May 27, 2026

View abstract on PubMed

Summary
This summary is machine-generated.

A new microfluidic chip rapidly measures soil enzyme activities, crucial for soil health indicators. This portable device enhances accuracy and efficiency over traditional methods for ecological monitoring.

Keywords:
centrifugal microfluidicsenzyme activity quantificationfluorescence detectionsoil extracellular enzymessoil health assessment

More Related Videos

Determination of Microbial Extracellular Enzyme Activity in Waters, Soils, and Sediments using High Throughput Microplate Assays
15:23

Determination of Microbial Extracellular Enzyme Activity in Waters, Soils, and Sediments using High Throughput Microplate Assays

Published on: October 1, 2013

On-Site Molecular Detection of Soil-Borne Phytopathogens Using a Portable Real-Time PCR System
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On-Site Molecular Detection of Soil-Borne Phytopathogens Using a Portable Real-Time PCR System

Published on: February 23, 2018

Related Experiment Videos

High-throughput Fluorometric Measurement of Potential Soil Extracellular Enzyme Activities
12:33

High-throughput Fluorometric Measurement of Potential Soil Extracellular Enzyme Activities

Published on: November 15, 2013

Determination of Microbial Extracellular Enzyme Activity in Waters, Soils, and Sediments using High Throughput Microplate Assays
15:23

Determination of Microbial Extracellular Enzyme Activity in Waters, Soils, and Sediments using High Throughput Microplate Assays

Published on: October 1, 2013

On-Site Molecular Detection of Soil-Borne Phytopathogens Using a Portable Real-Time PCR System
14:15

On-Site Molecular Detection of Soil-Borne Phytopathogens Using a Portable Real-Time PCR System

Published on: February 23, 2018

Area of Science:

  • Environmental Science
  • Analytical Chemistry
  • Biochemistry

Background:

  • Soil eco-enzymes (microbial extracellular enzymes) are vital for nutrient cycling and ecosystem services, acting as key indicators of soil health.
  • Conventional enzyme assays face limitations including long reaction times, high reagent use, and poor performance with complex soil samples.

Purpose of the Study:

  • To develop a portable, microfluidic platform for rapid and sensitive measurement of multiple soil extracellular enzyme activities.
  • To automate sample processing, reagent handling, and parallel enzyme analysis for improved efficiency.

Main Methods:

  • A centrifugally driven microfluidic chip was engineered to automate sample aliquoting, reagent metering, mixing, and sedimentation.
  • Capillary valves ensured precise liquid control, and high optical uniformity (<5% fluorescence variation) was achieved.
  • 4-methylumbelliferone (MUF)-based calibration demonstrated strong linearity (R² > 0.99) across various soil types.

    • Main Results:

    • The microfluidic system enabled parallel measurement of eight soil enzymes with improved reproducibility (CV < 15%) compared to microplate assays.
    • The platform enhanced detection of weak fluorescence signals and increased throughput.
    • Reagent consumption was significantly reduced.

    Conclusions:

    • The field-ready microfluidic platform offers a robust solution for standardized soil enzyme assessment.
    • This technology streamlines analysis, reduces costs, and improves data reliability for soil health monitoring.
    • Future integration with AI and ecological monitoring frameworks is promising.