Recalcitrant Material Degradation
Recalcitrant Material Degradation - Related Videos
08:21
Isolation and Screening from Soil Biodiversity for Fungi Involved in the Degradation of Recalcitrant Materials
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Cited by 2 •
2022
Here, we present a protocol for screening soil biodiversity to look for fungal strains involved in the degradation of recalcitrant materials. First, fungal strains able to grow on humic acids or lignocellulose are isolated. Their activity is then tested both in enzymatic assays and on pollutants such as hydrocarbons and plastics.
09:38
Hybrid-Cut: An Improved Sectioning Method for Recalcitrant Plant Tissue Samples
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Cited by 22 •
2016
This protocol describes a simple Hybrid-Cut tissue sectioning method that is useful for recalcitrant plant tissues. Good quality tissue sections enable anatomical studies and other biological studies including in situ hybridization (ISH).
07:44
Characterization of Full Set Material Constants and Their Temperature Dependence for Piezoelectric Materials Using Resonant Ultrasound Spectroscopy
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Cited by 8 •
2016
This protocol describes the procedure of measuring the temperature dependence of the full set material constants of piezoelectric materials using resonant ultrasound spectroscopy (RUS).
11:07
In Situ Isolation and Culturing of Recalcitrant Soil Bacteria using an Isolation Chip (iChip)
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2025
This protocol describes the design and use of an isolation chip (iChip) for in situ cultivation of recalcitrant soil microbes in their natural environment. It also describes the in situ cultivation of antimicrobial-producing soil bacteria. The protocol can be adapted to recover bacteria from diverse niches with other desirable properties.
02:58
Regulated Protein Degradation
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2020
It is vital to regulate the activity of enzymatic as well as non-enzymatic proteins inside the cell. This can be achieved either through creating a balance between their rate of synthesis and degradation or regulating the intrinsic activity of the protein. Both these regulation mechanisms play an essential role in the normal functioning of cells. Protein degradation plays two important roles in the cells. It helps to protect cells from misfolded or damaged proteins before they lead to a...
FAQs
Extracellular enzymes allow microorganisms and fungi to act outside their cells on large, chemically complex substrates. These enzymes can oxidize resistant structures, hydrolyze susceptible bonds, or fragment polymers into smaller components that are easier to use. This external processing is especially important for lignin-rich plant matter and keratin, whose size and structure limit direct cellular access.
Moisture, temperature, and oxygen help determine whether the biological machinery for breakdown can operate effectively. Conditions that support microbial and fungal activity generally promote enzyme action, whereas unsuitable conditions can slow transformation and prolong material persistence. Oxygen availability is particularly relevant because the overall process may depend on oxidative reactions as well as hydrolytic and fragmenting activities.
These processes attack resistant materials in complementary ways. Oxidation changes complex chemical structures, hydrolysis breaks bonds through chemical reaction with water, and fragmentation reduces larger structures into smaller pieces. Together, they increase the accessibility of material to biological action rather than relying on a single breakdown route, helping convert persistent substances into forms that can enter further biological processing.
Different microorganisms and fungi can contribute distinct abilities to transform resistant substances, so community activity influences how quickly material changes and where its carbon moves. Their combined action can reduce the persistence of some pollutants, while limited or unsuitable biological activity may leave compounds in the environment longer. Studying these communities therefore connects molecular degradation mechanisms with ecosystem-level carbon cycling.
In composting and agricultural waste conversion, biological breakdown helps process resistant plant-derived material that would otherwise persist. Microbial and fungal enzymes, supported by suitable moisture, temperature, and oxygen, make complex biomass more accessible for continued transformation. Understanding these mechanisms can improve the use of agricultural residues and support conversion of difficult biomass into useful chemicals.
Biological degradation provides a basis for bioremediation, where microbial or fungal activity is used to transform persistent substances in contaminated environments. Extracellular enzymes can oxidize, hydrolyze, or fragment resistant compounds, including some synthetic materials. Research focuses on how environmental conditions and microbial communities influence whether pollutants are broken down and how effectively their persistence is reduced.
These studies show how organisms overcome chemical resistance, how extracellular enzymes interact with complex substrates, and how environmental conditions shape decomposition. They also reveal connections between microbial activity, carbon movement, and the persistence of pollutants. In biology, this information supports interpretation of natural nutrient cycling while guiding applications in waste conversion, composting, and environmental cleanup.