Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Microbial Bioremediation of Pesticides01:28

Microbial Bioremediation of Pesticides

Pesticides often feature structurally complex chemical architectures, incorporating halogen groups and multiple aromatic rings. These characteristics confer high chemical stability, rendering many pesticides resistant to natural degradation processes. This resistance poses significant environmental concerns, as persistent pesticide residues can accumulate in ecosystems and affect non-target organisms.Despite the inherent stability of many pesticides, certain microorganisms possess the metabolic...
Complexometric Titration: Ligands00:43

Complexometric Titration: Ligands

Different monodentate and polydentate ligands are used as complexing agents in complexometric titration reactions. The formation of complexes by mono- and bidentate ligands involves two or more intermediate steps, limiting their use as complexing agents. In comparison, polydentate ligands can form complexes with metal ions in a single-step process, facilitating sharper end points. This means polydentate ligands, such as amino carboxylic acid derivatives, are most commonly employed in...
Extraction: Advanced Methods00:56

Extraction: Advanced Methods

Metal ions can be separated from one another by complexation with organic ligands–the chelating agent– to form uncharged chelates. Here, the chelating agent must contain hydrophobic groups and behave as a weak acid, losing a proton to bind with the metal. Since most organic ligands used in this process are insoluble or undergo oxidation in the aqueous phase, the chelating agent is initially added to the organic phase and extracted into the aqueous phase. The metal-ligand complex is formed in...
Microbes and Other Elemental Cycles01:24

Microbes and Other Elemental Cycles

Microbial activity plays a pivotal role in the biogeochemical cycling of iron and manganese, especially at the redox gradients characteristic of stratified aquatic environments. These cycles are driven by microbial transformations between oxidized and reduced forms of the metals, allowing organisms to exploit them for metabolic energy and structural purposes.Iron Cycling Across Redox GradientsIn neutral, oxygen-rich surface waters, iron is predominantly found in its oxidized, insoluble ferric...

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

From aging to Alzheimer's disease: concordant brain DNA methylation changes in late life.

Genome medicine·2026
Same author

Precision Medicine in Astronauts: Principles and Targets in Molecular Assessment.

Methods in molecular biology (Clifton, N.J.)·2026
Same author

Trends of glyphosate residue in US Midwest nested watersheds.

Journal of environmental quality·2026
Same author

The aging epigenome: integrative analyses reveal intersection with Alzheimer's disease.

GeroScience·2026
Same author

Ligand Design Enables Cu-Catalyzed Etherification of Aryl Bromides Using Mild Bases.

Organic letters·2026
Same author

DNA methylation signatures of Life's Essential 8 and their implications for dementia.

Alzheimer's research & therapy·2025

Related Experiment Video

Updated: May 16, 2026

Elucidating the Metabolism of 2,4-Dibromophenol in Plants
06:54

Elucidating the Metabolism of 2,4-Dibromophenol in Plants

Published on: February 10, 2023

Metal mobilization in soil by two structurally defined polyphenols.

Michael A Schmidt1, Javier M Gonzalez, Jonathan J Halvorson

  • 1Department of Chemistry & Biochemistry, Miami University, Oxford, OH 45056, USA.

Chemosphere
|November 15, 2012
PubMed
Summary

Plant polyphenols, like tannins, significantly influence soil metal mobility. Higher molecular weight polyphenols bind more metals, impacting soil processes and offering potential for phytochelation agents in metal detoxification.

More Related Videos

Combined Size and Density Fractionation of Soils for Investigations of Organo-Mineral Interactions
08:38

Combined Size and Density Fractionation of Soils for Investigations of Organo-Mineral Interactions

Published on: February 15, 2019

Two-Dimensional Visualization and Quantification of Labile, Inorganic Plant Nutrients and Contaminants in Soil
12:03

Two-Dimensional Visualization and Quantification of Labile, Inorganic Plant Nutrients and Contaminants in Soil

Published on: September 1, 2020

Related Experiment Videos

Last Updated: May 16, 2026

Elucidating the Metabolism of 2,4-Dibromophenol in Plants
06:54

Elucidating the Metabolism of 2,4-Dibromophenol in Plants

Published on: February 10, 2023

Combined Size and Density Fractionation of Soils for Investigations of Organo-Mineral Interactions
08:38

Combined Size and Density Fractionation of Soils for Investigations of Organo-Mineral Interactions

Published on: February 15, 2019

Two-Dimensional Visualization and Quantification of Labile, Inorganic Plant Nutrients and Contaminants in Soil
12:03

Two-Dimensional Visualization and Quantification of Labile, Inorganic Plant Nutrients and Contaminants in Soil

Published on: September 1, 2020

Area of Science:

  • Environmental Chemistry
  • Soil Science
  • Biogeochemistry

Background:

  • Polyphenols, particularly tannins, are abundant in plant detritus and influence soil metal dynamics.
  • Understanding polyphenol-metal interactions is crucial for soil processes and environmental remediation.

Purpose of the Study:

  • To quantify the binding stoichiometries of model polyphenols (oenothein B and epigallocatechin gallate) with Al(III) and Fe(III).
  • To develop and test a predictive model for metal mobilization in soils amended with polyphenols.

Main Methods:

  • Micelle-mediated separation and inductively coupled plasma optical emission spectroscopy (ICP-OES) were used to determine polyphenol-metal binding.
  • Langmuir model was applied for single and competitive binding analysis of Al(III) and Fe(III).
  • A predictive model for metal mobilization was developed using binding parameters and soil sorption data, tested on three natural soils.

Main Results:

  • Higher molecular weight oenothein B exhibited greater metal binding capacity than epigallocatechin gallate (EGCg).
  • Oenothein B bound 9.43 mol Fe/mol, while EGCg bound 4.41 mol Fe/mol.
  • The predictive model accurately estimated Fe and Al mobilization (r²=0.92 and r²=0.88, respectively), correlating with polyphenol binding capacity and soil metal content.

Conclusions:

  • This study provides the first compound-specific data on natural polyphenol-metal interactions in environmental settings.
  • The developed model is applicable for predicting metal mobilization and designing phytochelation agents for metal detoxification.
  • Tannins play a significant role in modulating metal mobilization from soils.