TY - JOUR
T1 - Antimicrobial effects of a microemulsion and a nanoemulsion on enteric and other pathogens and biofilms
AU - Teixeira, Paula C.
AU - Leite, Gonçalo M.
AU - Domingues, Ricardo J.
AU - Silva, Joana
AU - Gibbs, Paul A.
AU - Ferreira, João Paulo
PY - 2007/8/15
Y1 - 2007/8/15
N2 - Some microemulsions and nanoemulsions may have antimicrobial properties and be effective anti-biofilm agents. We examined the abilities of two fine emulsions, designated BCTP and TEOP, to inactivate suspensions of vegetative cells of Salmonella spp. Escherichia coli 0157:H7 (VT-), Pseudomonas aeruginosa, Staphylococcus aureus and Listeria monocytogenes. BCTP is an O/W nanoemulsion of soybean oil and tri-n-butyl phosphate emulsified with Triton X-100, while TEOP is an O/W microemulsion of ethyl oleate with Tween 80 as emulsifier and n-pentanol as a co-emulsifier. BCTP was effective in reducing the cell numbers of L. monocytogenes, while TEOP was effective against all five organisms investigated. The abilities of these emulsions to reduce preformed biofilms of the five bacteria were also investigated. With the exception of the biofilm formed by L. monocytogenes, which surprisingly was not significantly affected by BCTP, all biofilms were inhibited by both BCTP and TEOP.
AB - Some microemulsions and nanoemulsions may have antimicrobial properties and be effective anti-biofilm agents. We examined the abilities of two fine emulsions, designated BCTP and TEOP, to inactivate suspensions of vegetative cells of Salmonella spp. Escherichia coli 0157:H7 (VT-), Pseudomonas aeruginosa, Staphylococcus aureus and Listeria monocytogenes. BCTP is an O/W nanoemulsion of soybean oil and tri-n-butyl phosphate emulsified with Triton X-100, while TEOP is an O/W microemulsion of ethyl oleate with Tween 80 as emulsifier and n-pentanol as a co-emulsifier. BCTP was effective in reducing the cell numbers of L. monocytogenes, while TEOP was effective against all five organisms investigated. The abilities of these emulsions to reduce preformed biofilms of the five bacteria were also investigated. With the exception of the biofilm formed by L. monocytogenes, which surprisingly was not significantly affected by BCTP, all biofilms were inhibited by both BCTP and TEOP.
KW - Antimicrobial effect
KW - Biofilms
KW - Foodborne pathogens
KW - Microemulsions
KW - Nanoemulsions
UR - http://www.scopus.com/inward/record.url?scp=34547431587&partnerID=8YFLogxK
U2 - 10.1016/j.ijfoodmicro.2007.05.008
DO - 10.1016/j.ijfoodmicro.2007.05.008
M3 - Article
C2 - 17610974
AN - SCOPUS:34547431587
SN - 0168-1605
VL - 118
SP - 15
EP - 19
JO - International Journal of Food Microbiology
JF - International Journal of Food Microbiology
IS - 1
ER -