E. Coli may be present on a picnic table with food

Escherichia coli

Table V.4: Escherichia coli
TYPE OF PATHOGEN & SYMPTOMS OF INFECTION

E. coli is a gram negative type of bacteria that can cause infections in the: (v.1880)

A common symptom associated with E. coli infections is diarrhea. In severe cases, E. coli can cause potentially fatal systemic infection and septic shock(v.18)

TYPE OF STUDY EFFECT OF TURMERIC EXTRACTS and CURCUMIN

Industrial - Textiles

Cotton fabric was treated with chitosan and then dyed with curcuminoids extracted from turmeric. The turmeric-based dye reduced E. coli bacterial growth by 100%. (v.1140)

Lab

Whole herb turmeric extracts (25% weight per volume in ethanol) and 0.3 ml of turmeric juice showed antibacterial activity against E. coli. However, other types of turmeric rhizome extracts showed no effect against the bacteria. (v.589-90)

Lab

Foam infused with curcumin combined with visible light phototherapy killed 81% of E. coli organisms. However, curcumin's effectiveness depended on the type of foam it was dissolved in. When used in cyclodextrin foam, curcumin had no effect, but it was highly effective in polyethylene glycol 400. (v.38)

Animal

Agar films are flexible, rubbery wound dressings. When combined with turmeric extract, the agar composite film showed antimicrobial effect against E. coli and other bacteria. The turmeric dressing also healed wounds between 21-28.5% faster than plain agar films. (v.26)

The turmeric film's antimicrobial strength was not as strong as silver agar composite film. Silver has often been used in wound dressings because of its potent antimicrobial effects. However, while turmeric has a long record of safety towards human cells, multiple studies suggest that silver dressings may actually slow down wound healing and are toxic. (v.2691)

Lab

Curcumin inhibits the formation of biofilm slime by E. coli bacteria. Biofilms protect bacteria from the immune system and antibiotic treatment. Despite this protection, curcumin also proved to be toxic to E. coli in biofilms. (v.35)

TURMERIC COMPOUNDS AGAINST ESCHERICHIA COLI

Research (mostly lab studies) show that individual compounds in turmeric also have antibacterial effects against E. coli. These include:

Some of these performed better against E. coli than the antibiotic streptomycin in the disc-diffusion type of test (e.g., 1,8-cineole and camphor). The pinenes both showed inhibition zones against E. col over 83% that of streptomycin. Limonene was 75% effective as against E. coli as streptomycin. (v.67)

However, others studies suggest that some of these same compounds show little activity against E. coli by themselves. These include the pinenes, limonene, ρ-cymene, and γ-terpinene. (v.79)

Made with glycerol or propylene glycol, agar (a natural polysaccharide substance), and gelatin. (v.26)

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