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Related Concept Videos

Protein Digestion01:02

Protein Digestion

Protein digestion begins in the stomach, where the highly acidic environment can easily disrupt protein structure by exposing the peptide bonds of polypeptide chains. After polypeptide chains are broken into individual amino acids by a series of digestive enzymes, the amino acids are transported to the liver via the bloodstream to produce energy.
Microbial Bioremediation of Plastics01:28

Microbial Bioremediation of Plastics

Polyethylene terephthalate (PET) is a synthetic polymer widely utilized in the packaging industry, particularly for bottles and containers. Due to its chemical stability and durability, PET accumulates in the environment, contributing significantly to plastic pollution. It comprises repeating units of terephthalic acid and ethylene glycol, resulting in a semi-crystalline structure that is resistant to natural degradation processes.A notable breakthrough in plastic biodegradation came with the...
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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...
Mechanical and Chemical Digestion in the Small Intestine01:30

Mechanical and Chemical Digestion in the Small Intestine

The small intestine plays a crucial role in our digestive system, performing both mechanical and chemical digestion.
Mechanical digestion in the small intestine involves movements such as segmentations and migrating motility complexes (MMCs), primarily controlled by the myenteric plexus. Segmentations are localized contractions occurring in areas of the intestine distended by chyme—a mixture of partially digested food. These contractions mix chyme with digestive juices, facilitating absorption...
Enzyme Inhibition01:30

Enzyme Inhibition

Inhibitors are molecules that reduce enzyme activity by binding to the enzyme. In a normally functioning cell, enzymes are regulated by a variety of inhibitors. Drugs and other toxins can also inhibit enzymes. Some inhibitors bind to the enzyme’s active site, while others inhibit enzymatic activity by binding to other sites on the protein structure.

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Scalable Step-by-Step Approach of Sustainable Bioplastic Production from Food Waste
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Enhancing sanitation efficiency in red meat processing: a novel enzymatic approach.

Anna Macdonald1, Argenis Rodas-Gonzalez1, Tim McAllister1,2

  • 1Faculty of Agriculture and Food Science, University of Manitoba, Winnipeg, MB, Canada.

Frontiers in Microbiology
|May 7, 2026
PubMed
Summary

A novel enzyme-based cleaning strategy effectively removes meat residues and disrupts bacterial biofilms at lower temperatures. This approach enhances food safety in meat processing plants by preventing microbial persistence on food contact surfaces.

Keywords:
E. coli O157:H7biofilmenzymesfood safetyred meatsanitationsustainable

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Area of Science:

  • Food Science
  • Microbiology
  • Biotechnology

Background:

  • Residual organic matter on food contact surfaces (FCS) in meat processing plants supports bacterial growth, compromising food safety.
  • Conventional hot-water cleaning can set protein residues, forming protective films that hinder sanitation.
  • Existing cleaning methods may be energy-intensive and less effective against biofilms.

Purpose of the Study:

  • To develop and evaluate a low-temperature, enzyme-based cleaning strategy for meat processing plant surfaces.
  • To assess the efficacy of enzymatic cleaning in removing meat residues and disrupting bacterial biofilms.
  • To promote sustainable and energy-efficient cleaning practices in the food industry.

Main Methods:

  • Screening enzymes for activity at reduced temperatures (40-50°C) and neutral pH.
  • Evaluating a protease-lipase combination on stainless steel and conveyor belts contaminated with beef residues.
  • Quantifying surface hygiene using ATP and protein assays.
  • Optimizing the enzyme formulation with cellulases and amylase to target *Escherichia coli* O157:H7 biofilms.
  • Assessing biofilm reduction via biofilm mass measurements.

Main Results:

  • Enzyme treatment significantly reduced protein and ATP levels on FCS by approximately 93%.
  • The optimized enzymatic cocktail effectively disrupted extracellular polymeric substances in *E. coli* O157:H7 biofilms, leading to significant reductions in biofilm mass.
  • Enzymatic cleaning demonstrated near eradication of the biofilm matrix, with no statistical difference from negative controls.

Conclusions:

  • Enzyme-based cleaning offers a sustainable alternative to conventional methods for meat processing plants.
  • Low-temperature enzymatic cleaning enhances food safety by effectively removing residues and eliminating biofilms.
  • This strategy supports energy efficiency and improved sanitation in meat processing environments.