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Jennie Fuller's avatar

What a find! I wish I could get my hands on one of these! As a former pharmacy technician and team leader, ther Merck Manual was our go to. Now that I am a farmer I have the veterinary volume.

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Greg Eldefonso's avatar

Papaya extract, specifically the enzyme papain, has shown promising effects in combating biofilm-forming antibiotic-resistant bacteria. Here are some key findings:

* **Papain Enzyme**: Papain, a cysteine protease isolated from the papaya fruit (*Carica papaya*), has been studied for its antibiofilm activity. It has been found to inhibit biofilm formation and disrupt existing biofilms in drug-resistant bacteria such as *Klebsiella pneumoniae* Papain can also reduce the viability of biofilms formed by *Staphylococcus aureus* and *Campylobacter jejuni*

* **Mechanism of Action**: Papain works by degrading the extracellular polymeric substances (EPS) that make up the biofilm matrix, including exopolysaccharides and proteins. This degradation increases the permeability of the biofilm, making the bacteria more susceptible to antimicrobial treatments

* **Applications**: Papain has been immobilized on various polymers, such as low-density polyethylene (LDPE), high-density polyethylene (HDPE), linear low-density polyethylene (LLDPE), and polycaprolactam (PCL), to create antimicrobial food packaging. These materials have shown significant antibiofilm properties, particularly against *Acinetobacter* spp. and *Staphylococcus aureus*

* **Fermented Papaya Preparation (FPP)**: Fermented papaya preparation (FPP) has been investigated for its potential in improving oral health, particularly in diabetics. FPP has shown inhibitory effects on the growth, hydrophobicity, and acid production of common oral pathogens such as *Streptococcus mutans*, *Streptococcus mitis*, and *Lactobacillus acidophilus*

* **Antibiotic Resistance in Biofilms**: Biofilms are known to favor the rapid evolution of antibiotic resistance. Studies have shown that mutations in genes like *sbmA* and *fusA* are rapidly selected in biofilm-forming *Escherichia coli* when exposed to intermittent antibiotic treatments, highlighting the need for alternative strategies like the use of papain to combat biofilm-associated infections

These findings suggest that papain and papaya extracts could be valuable tools in the fight against antibiotic-resistant bacteria, particularly in the context of biofilm-related infections.

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