Prevalence of parasitic contamination in vegetables used for raw consumption in Shahrekord, Iran: Influence of season and washing procedure

Fallah, Aziz A.; Pirali-Kheirabadi, Khodadad; Shirvani, Fatemeh; Saei-Dehkordi, S. Siavash

doi:10.1016/j.foodcont.2011.12.004

Cited by 86 publications

(81 citation statements)

References 19 publications

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“…However, this finding is in contrast with studies performed in Alexandria, Egypt, and in Shahrekord, Iran, where Cryptosporidium spp. oocysts and Ascaris lumbricoides eggs were the most frequently isolated parasites in vegetables (Fallah et al 2012). In our study, unidentified trematodes (flukes) were also detected on vegetable samples, with daun kesum being the most contaminated vegetable throughout the period of the study, which is similar to a study performed by Nadia (2014) who reported the presence of unidentified trematodes on the vegetables collected from the local markets around Bau campus, Bangladesh.…”

Section: Discussionsupporting

confidence: 89%

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Occurrence of Intestinal Parasitic Contamination in Select Consumed Local Raw Vegetables and Fruits in Kuantan, Pahang

Yusof¹,

Mohammad²,

Abdullahi

et al. 2017

tlsr

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Abstrak: Jangkitan parasit usus adalah salah satu penyakit manusia yang lazimnya menyebabkan masalah kesihatan yang serius dan mengakibatkan isu-isu ekonomi di negara-negara maju dan membangun. Sayur-sayuran mentah dan buah-buahan memainkan peranan yang penting sebagai medium jangkitan parasit ke dalam manusia. Oleh itu, tujuan kajian ini adalah untuk menyiasat pencemaran parasitologi daripada sayur-sayuran berdaun dan buah-buahan yang biasa dimakan serta dipilih penduduk tempatan di Kuantan, Malaysia. Sebanyak satu kilogram sayur-sayuran tempatan yang dimakan mentah dan buah-buahan telah dikumpulkan secara rawak dari pasar basah Kuantan (Pasar Tani) semasa musim tengkujuh (November 2014-Januari 2015) dan musim kering (Februari 2015-April 2015. Prosedur lazim "wet mount" dan teknik perwarnaan Ziehl-Neelsen yang dimodifikasi telah digunakan untuk mengesan parasit. Dalam kajian ini, pemeriksaan sayur-sayuran mendedahkan lima spesies parasite yang berbeza. Sampel sayur-sayuran yang diambil daripada pasar basah Kuantan adalah positif untuk kedua-dua helmin dan protozoa. Walau bagaimanapun, sampel buah-buahan adalah negatif untuk pencemaran parasit. Pegaga merupakan sayuran yang paling tercemar dalam kajian ini dan Strongyloides adalah parasit yang paling kerap ditemui. Tambahan pula, terdapat kepelbagaian yang tinggi dalam jenis parasit yang telah diperhatikan semasa musim kering berbanding musim tengkujuh. Oleh itu, tindakan lanjut perlu diambil untuk mengurangkan berlakunya pencemaran parasit didalam sayur-sayuran dengan melaksanakan prinsip-prinsip amalan pertanian yang baik serta keberkesanan rawatan air perlu dipertingkatkan. 24parasites to humans. Hence, the aim of this study was to investigate the parasitological contamination of select commonly consumed local leafy vegetables and fruits in Kuantan, Malaysia. One kilogram of locally consumed raw vegetables and fruits were collected randomly from the Kuantan wet market (Pasar Tani) during the monsoon season (November 2014-January 2015) and the dry season (February 2015-April 2015. A standard wet mount procedure and modified Ziehl-Neelsen staining were used for the detection of parasites. In the present study, the examination of vegetables revealed five different parasite species. The vegetable samples collected from Kuantan's wet market were positive for both helminthes and protozoa. However, the fruits samples were negative for parasitic contamination. Pegaga was the most contaminated leafy vegetable in this study, and Strongyloides was the parasite found most frequently. Furthermore, there was a high diversity in the type of parasites observed during the dry season compared to the monsoon season. Therefore, further action should be taken to reduce the occurrence of parasitic contamination in vegetables by implementing the principles of good agricultural practice and improving water treatment efficacy.

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Section: Discussionsupporting

confidence: 89%

“…Furthermore, consuming vegetables in a raw or slightly cooked form to protect or to preserve "heat-labile nutrients" may increase the risk of intestinal parasitic infections (Fallah et al 2012).…”

Section: Introductionmentioning

confidence: 99%

Occurrence of Intestinal Parasitic Contamination in Select Consumed Local Raw Vegetables and Fruits in Kuantan, Pahang

Yusof¹,

Mohammad²,

Abdullahi

et al. 2017

tlsr

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“…For instance, rinsing under running tap water is considered more effective than immersion, resulting in up to 2.2 log 10 coli reductions (Pangloli et al 2009). In case of helminth eggs, all treatments induced comparable reductions effect, which is mostly based on the physical force of washing and rinsing, not a chemical impact (Amoah et al 2007b;Fallah et al 2012).…”

Section: Discussionmentioning

confidence: 91%

Microbiological quality of lettuce (Lactuca sativa) irrigated with wastewater in Addis Ababa, Ethiopia and effect of green salads washing methods

Woldetsadik

Drechsel

Keraita³

et al. 2017

FoodContamination

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Background: In Addis Ababa, where irrigation water for vegetable production is commonly derived from the highly polluted Akaki river, information on microbial contamination of water and irrigated vegetable is scanty. An assessment was done to determine the microbiological quality of irrigation water and lettuce harvested from 10 urban farming sites of Addis Ababa. The efficacy of 5 lettuce washing methods were also assessed. A total of 210 lettuce and 90 irrigation water samples were analyzed for faecal coliform and helminth eggs population levels. Results: The mean faecal coliform levels of irrigation water ranged from 4.29-5.61 log 10 MPN 100 ml −1 , while on lettuce, the concentrations ranged from 3.46-5.03 log 10 MPN 100 g

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“…Ascaris spp. was also one of the most prevalent detected parasite attached to vegetables in the neighbouring developing countries ranging from 12% to 26% (Al-Shawa and Mwafy, 2007;Al-Megrm, 2010;Fallah et al, 2012;Ali and Ameen, 2013). In Jordan, a study by Al-Lahham et al (1990) found that the highest intestinal parasite detected in the stool samples collected from 283 food handlers was Ascaris lumbri coides with a detection rate of 5%.…”

Section: Discussionmentioning

confidence: 99%

Prevalence of Parasitic Contamination in Salad Vegetables Collected from Supermarkets and Street Vendors in Amman and Baqa’a – Jordan

Ismail

2016

Polish Journal of Microbiology

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A b s t r a c tOne of the main ways in transmitting parasites to humans is through consuming contaminated raw vegetables. The aim of this study was to evaluate the prevalence of parasitological contamination (helminthes eggs, Giardia and Entamoeba histolytica cysts) of salad vegetables sold at supermarkets and street vendors in Amman and Baqa'a -Jordan. A total of 133 samples of salad vegetables were collected and examined for the prevalence of parasites. It was found that 29% of the samples were contaminated with different parasites. Of the 30 lettuce, 33 tomato, 42 parsley and 28 cucumber samples examined the prevalence of Ascaris spp. eggs was 43%, 15%, 21% and 4%; Toxocara spp. eggs was 30%, 0%, 0% and 4%; Giardia spp. cysts was 23%, 6%, 0% and 0%; Taenia/Echinococcus eggs was 20%, 0%, 5% and 0%; Fasciola hepatica eggs was 13%, 3%, 2% and 0%; and E. histolytica cysts was 10%, 6%, 0% and 0%, respectively. There was no significant difference in the prevalence of parasite in salad vegetables either between supermarkets and street vendors, or between Amman and Baqa'a, Ascaris spp. was found to be the highest prevalent parasite in salad vegetables from supermarkets and street vendors and from Amman and Baqa'a. Our results pointed out that, the parasitic contamination of salad vegetables found in our study might be caused by irrigating crops with faecal contaminated water. We concluded that salad vegetables sold in Amman and Baqa'a may cause a health risk to consumers. K e y w o r d s: Amman, Baqa'a refugee camp, contamination, parasite, salad vegetable

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Prevalence of parasitic contamination in vegetables used for raw consumption in Shahrekord, Iran: Influence of season and washing procedure

Cited by 86 publications

References 19 publications

Occurrence of Intestinal Parasitic Contamination in Select Consumed Local Raw Vegetables and Fruits in Kuantan, Pahang

Occurrence of Intestinal Parasitic Contamination in Select Consumed Local Raw Vegetables and Fruits in Kuantan, Pahang

Microbiological quality of lettuce (Lactuca sativa) irrigated with wastewater in Addis Ababa, Ethiopia and effect of green salads washing methods

Prevalence of Parasitic Contamination in Salad Vegetables Collected from Supermarkets and Street Vendors in Amman and Baqa’a – Jordan

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