Naslov
Inhibition of foodborne resistant and pathogenic bacteria by Dalmatian aromatic herbs extract

Autori
Zdolec, Nevijo ; Klanac, Lucija ; Kiš, Marta ; Dobranić, Vesna

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
Book of Abstract - 9th International Congress Veterinary Science and Profession / Brkljača Bottegaro, Nika ; Lukač, Maja ; Zdolec, Nevijo ; Vrbanac, Zoran - Zagreb, 2021, 49-49

ISBN
978-953-8006-36-4

Skup
9th International Congress: Veterinary Science and Profession

Mjesto i datum
Zagreb, Hrvatska, 09.10.2021

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Antimicrobial activity ; foodborne resistant bacteria ; pathogenic bacteria ; aromatic herbs extract

Sažetak
Domestic aromatic herbs and their extracts have high potential as natural additives in local food production. The CEKOM 3LJ project aims to investigate the impact of Dalmatian aromatic herbs in cheese production in terms of taste, quality and health properties of new products. The aim of our study was to test the antimicrobial activity of alcoholic extracts of seasonal aromatic herbs from Dalmatia - basil (Ocimum basilicum L.), sage (Salvia officinalis), lavender (Lavandula officinalis), rosemary (Rosemarinus officinalis L.) and immortelle (Helichrysum italicum). Antimicrobial potential was evaluated using a disk diffusion test against pathogenic and resistant bacterial strains of food and public health importance: four strains of Salmonella Infantis, ermA+ Staphylococcus haemolyticus, ermC+ Staphylococcus haemolyticus, Staphylococcus aureus, Yersinia enterocolitica, Listeria innocua, Listeria welshimeri, Listeria ivanovii and Listeria monocytogenes. Alcoholic extracts were effective on nine of the 14 strains tested. Staphylococci and Y. enterocolitica strains were most sensitive and were inhibited by all herbal extracts., Rosemary extract inhibited the broadest spectrum, i.e. seven indicator bacteria, while lavender inhibited only three. Immortelle extract showed the strongest inhibitory activity in terms of the broadest zones of inhibition against ermA+ Staphylococcus haemolyticus, ermC+ Staphylococcus haemolyticus and Staphylococcus aureus. After three months of storage, the antimicrobial activity of sage, rosemary and immortelle extracts was maintained, albeit in attenuated form. The results show a high antimicrobial potential of herbal extracts against pathogens that may compromise the microbiological safety of cheese. Their inhibitory activity will be further investigated against cheese starter cultures and indigenous dairy microbiota to gain a complete insight into the technological applicability of the extracts in cheese production.

Izvorni jezik
Ostalo

Znanstvena područja
Veterinarska medicina

POVEZANOST RADA