ISSN: 0973-7510

E-ISSN: 2581-690X

Research Article | Open Access
Adnan Khaliq1, Harris Sajjad2, Muhammad Farhan Jahangir Chughtai1, Samreen Ahsan1, Atif Liaqat1, Assam Bin Tahir4, Lilya Ponomareva3,Elena Khryuchkina3, Evgeny Ponomarev3, Elena Lavrushina3,Nataliya Gubanova3, Lidiia Kozlovskikh3, Dmitry Baydan3and Mohammad Ali Shariati3
1Department of Food Science and Technology, Khwaja Fareed University of Engineering and Information Technology, Rahim Yar Khan, Pakistan.
2Punjab Food Authority, Lahore, Pakistan.
3K.G. Razumovsky Moscow State University of technologies and management (the First Cossack University), Moscow, Russian Federation, Russia.
4University Institute of Diet and Nutritional Sciences, Faculty of Allied Health Sciences, The University of Lahore, Lahore, Pakistan.
J Pure Appl Microbiol. 2021;15(3):1625-1633 | Article Number: 7148 | © The Author(s). 2021
Received: 03/07/2021 | Accepted: 04/08/2021 | Published: 25/08/2021

The desire for a healthy lifestyle and faster mode of preparation has supported the consumption of ready to eat fresh salad. Street vended salads are recognized as a source of pathogenic transamination in different parts of the world. The present study was designed to evaluate the safety status of fresh vegetable and Russian salads being sold at various food outlets of Faisalabad. Samples of freshly prepared salads were collected from representative selected different areas of Faisalabad city divided into four different zones (zone 1, zone 2, zone 3 and zone 4). Prevalence and enumeration of Listeria was done through microbial testing via the spread plate method. Among samples of vegetable salad, the highest prevalence of Listeria was found in the zone 2 (75%) whereas Russian salad samples from zones 1 and 3 exhibited 62% prevalence, the highest among all 4 zones of study. On the whole, the lowest prevalence of Listeria was found in zone 4 (50% vegetable salad and 58% Russian salad). Biochemical conformation of Listeria done through different tests for the identification of various Listeria species, exhibited that Listeria monocytogenes and Listeria innocua were highly prevalent in samples from zones 1 and 3 respectively. The results will help to improve safety concerns associated with street vended foods.


Listeria, ready-to-eat, vended salads

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© The Author(s) 2021. Open Access. This article is distributed under the terms of the Creative Commons Attribution 4.0 International License which permits unrestricted use, sharing, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.