+44-1518-081136Use of plant essential oils to inhibit Salmonella enterica in Hummus
Joint Event on 2nd International Conference on Food Safety and Hygiene & 7th International Conference on Nutrition, Food Science and Technology
March 07-09, 2019 | London, UK
Mahmoud Abughoush
Hashemite University, Jordan
Scientific Tracks Abstracts : J Food Technol Pres
Abstract:
Aims: Screen the antimicrobial activity of different essential
oils against Salmonella and investigate the inhibitory effect
of cinnamon or thyme oils against Salmonella and mesophilic
aerobic bacteria (MAB) in hummus.
Methods and Results: Different essential oils (thyme,
sage, cardamom, laurel, rosemary, cinnamon, ginger, fir)
were tested against 5 Salmonella serotypes. Salmonellainoculated
Hummus was treated with 0.5 to 1.5% thyme or
cinnamon oils (which exhibited the highest antimicrobial
activity using disc-diffusion method with inhibition zones
of 22.5-38.5 mm in diameter) and stored at 4 or 10°C.
Salmonella cells were not detected in Hummus treated
with 0.5-1.0% cinnamon oil by 7 and 1 d, respectively, at
4 or 10°C. Cinnamon oil at 0.5-1.5% reduced the MAB in
Hummus by 1.3-4.6 log CFU/g at 4 °C. However, addition
of 0.5-1.5% thyme oil into Hummus reduced Salmonella
by 1.0-2.9 log CFU/g, respectively, at 4°C by 10 d. Thyme
oil also inhibited growth of MAB in Hummus and the count
remained constant until the end of storage period at 4°C.
While at 10°C, thyme oil showed lower inhibitory effect.
Conclusion: Cinnamon and thyme oils were effective in
inhibiting Salmonella in Hummus.
Significance and Impact of Study: Using cinnamon and
thyme oil may improve the safety and extend the shelf-life
of Hummus.
Biography:
Mahmoud Abughoush has completed his PhD in food chemistry, food safety and processing in 2003 from Kansas State University / USA in the field of food science. He is associate professor at the Hashemite University / Jordan. He has published more than 30 papers in reputed journals. Now, Abughoush is the Dean of applied and Medical Science College at the Hashemite University, Jordan.
E-mail: abulaith@hu.edu.jo
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