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Bioremediation00:46

Bioremediation

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Radical Autoxidation

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Microbial Bioremediation of Uranium

Microorganisms play a critical role in the transformation and immobilization of uranium in contaminated environments through four main pathways: bioreduction, biosorption, bioaccumulation, and biomineralization. These mechanisms reduce uranium’s toxicity and prevent its migration through groundwater systems, offering sustainable approaches for in situ bioremediation.Bioreduction of UraniumBioreduction is driven by anaerobic bacteria such as certain strains of Geobacter and Shewanella, which use...
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...
Biodeterioration01:28

Biodeterioration

Biodeterioration refers to the unwanted alteration of materials caused by microorganisms—especially fungi—which damage both organic substrates (paper, wood, textiles) and inorganic ones (stone, plaster, glass). Unlike abiotic decay, biodeterioration results from biological activity that produces physical disruption and chemical degradation.Physical deterioration occurs as fungal hyphae penetrate pores, cracks, and surface irregularities. Hyphal turgor pressure, thigmotropic growth along...
Production of Organic Acids01:25

Production of Organic Acids

Lactic acid, an important organic acid extensively applied in food, pharmaceutical, and biodegradable polymer industries, is primarily produced via microbial fermentation. This method is favored over chemical synthesis due to its environmental sustainability and capacity for enantiomerically pure product formation. Among various microbial processes, the fermentation of starch-based substrates stands out due to the abundance and renewability of raw materials like corn and potatoes.Hydrolysis of...

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Related Experiment Video

Updated: Jun 24, 2026

Isolation of Native Soil Microorganisms with Potential for Breaking Down Biodegradable Plastic Mulch Films Used in Agriculture
13:38

Isolation of Native Soil Microorganisms with Potential for Breaking Down Biodegradable Plastic Mulch Films Used in Agriculture

Published on: May 10, 2013

Biodegradation of oxalic acid from spinach using cereal radicles.

Thomas Betsche1, Barbara Fretzdorff

  • 1Institute for Biochemistry of Cereals and Potatoes, Federal Research Centre for Nutrition and Food, Schützenberg 12, 32756 Detmold, Germany. thomas.betsche@bfel.de

Journal of Agricultural and Food Chemistry
|December 8, 2005
PubMed
Summary
This summary is machine-generated.

Cereal seedlings, rich in oxalate oxidase, effectively degrade oxalate in spinach and other products. This biological method offers a promising solution for reducing oxalate levels in food and beverages.

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Area of Science:

  • Food Science
  • Biotechnology
  • Nutritional Science

Background:

  • High oxalate intake poses health risks, particularly for infants and susceptible adults.
  • Spinach, a nutritious vegetable, is notably high in oxalates.
  • Conventional oxalate reduction methods like blanching are often insufficient.

Purpose of the Study:

  • To explore a novel biological method for oxalate reduction using cereal seedlings.
  • To evaluate the efficacy of oxalate oxidase from rye, barley, and wheat seedlings in degrading oxalate.
  • To assess the potential for oxalate removal from various food products and industrial water.

Main Methods:

  • Utilizing rye, barley, and wheat seedlings/radicles containing natural oxalate oxidase.
  • Testing oxalate degradation rates at varying concentrations (0.25 mM), temperatures (18-55°C), and pH (3.5).
  • Applying the method to commercial deep-frozen spinach and other potential sources like juices and process waters.

Main Results:

  • Rapid degradation of dissolved oxalate observed with cereal radicles (70% in 100 min).
  • Near-complete degradation of soluble oxalate in spinach achieved at pH 3.5, reducing total oxalate by 50%.
  • Effective oxalate degradation observed across a temperature range of 18-55°C.

Conclusions:

  • Cereal seedlings offer a viable biological solution for significant oxalate reduction.
  • The method is effective for spinach and potentially applicable to other vegetables, juices, and industrial applications.
  • This approach could enhance food safety and nutritional quality by lowering oxalate content.