G
Gerhard J. Haas
Researcher at Fairleigh Dickinson University
Publications - 18
Citations - 642
Gerhard J. Haas is an academic researcher from Fairleigh Dickinson University. The author has contributed to research in topics: Hop (networking) & Clostridium difficile. The author has an hindex of 11, co-authored 18 publications receiving 597 citations.
Papers
More filters
Journal ArticleDOI
Antimicrobial activity of hop extracts against Listeria monocytogenes in media and in food.
TL;DR: The results indicate that hop extracts could be used to control L. monocytogenes in minimally processed food with low fat content and the antimicrobial activity of hop extracts in food appeared to increase with acidity and lower fat content.
Journal ArticleDOI
Inhibition of Streptococcus Mutans and Other Oral Streptococci by Hop (Humulus Lupulus L.) Constituents
TL;DR: Antimicrobial activity of hop constituents was found to be greater than other plant products such as thymol, nerol, cinnamon oil, oil of clove, menthol and eucalyptol.
Journal ArticleDOI
Antimicrobial activity of lupulone against Clostridium perfringens in the chicken intestinal tract jejunum and caecum
Gregory R. Siragusa,Gerhard J. Haas,Paul D. Matthews,R. J. Smith,R. J. Buhr,N. M. Dale,M. G. Wise +6 more
TL;DR: Lupulone administered through water inhibits gastrointestinal levels of inoculated pathogenic clostridia within the chicken gastrointestinal tract, thereby making this agent a target of further research as an antibiotic alternative for this and possibly other intestinal infections.
Journal ArticleDOI
Positive antibacterial co-action between hop (Humulus lupulus) constituents and selected antibiotics.
TL;DR: Surprisingly, there was some positive co-action even against certain Gram-negative bacteria but not against others, and there was no co- action against E.coli.
Journal ArticleDOI
Antimicrobial Activity of Hop Resins.
Gerhard J. Haas,Raffi Barsoumian +1 more
TL;DR: The antimicrobial activity of hop resins against Streptococcus salivarius, Staphylococcus aureus, Bacillus megaterium, Escherichia coli B, and Bacillus subtilis was investigated, but resistance development varied between the different microbes.