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Korean J Parasitol > Volume 21(1):1983 > Article

Original Article
Korean J Parasitol. 1983 Jun;21(1):105-110. English.
Published online Mar 20, 1994.  http://dx.doi.org/10.3347/kjp.1983.21.1.105
Copyright © 1983 by The Korean Society for Parasitology
Change in incidence of parasite eggs and larvae from vegetable in the markets of Taegu
Jeong Suk Lee,Jung Sook Seo,**Mee Sun Ock and Young Sun Park
Department of Home Management, Yeung Nam University, Taegu, Korea.
**Department of Food and Nutrition, College of Home Economics, Yeung Nam University, Taegu, Korea.
Department of Parasitology, Kyungpook National University, School of Medicine, Taegu, Korea.
Department of Nutrition, College of Home Economics, Daegu University, Taegu, Korea.
Abstract

A survey on vegetables, which consisted of lettuce (Lactuca sativa), young radish (Raphanus sapivus), and chinese cabbage (Brassica pekinensis) collected from 6 markets in the Taegu city, was conducted for the discovery of helminth eggs and larvae, from July 1982 to June 1983.

The results were compared with the data obtained from vegetables collected at the same markets by Lee (1969) and Choi and Lee (1972).

Both sides of vegetable leaves were washed carefully with a hard brush, and the species of parasites and the mean number of parasites per 200 g of vegetable were determined.

When vegetable were examined, 4 species of parasite eggs (ascarid, Trichostrongylus, liver fluke, and hookworms) and 2 larvae (filariform and rhabditoid larvae) were found. Of the parasite discovered, ascarid egg was found to be highest (4.2%), followed by hookworm egg (3.6%).

The mean number of ascarid egg per 200 grams of vegetable was 0.6 in young radishes, and 0.3 in both lettuces and chinese cabbages. Similarly, the number of filariform larva of hookworm was 0.4 in young radishes, 0.3 in lettuces, and 0.l in chinese cabbages, and the number of rhabditoid larva was 0.2 in young radishes, 0.1 in lettuces, and 0.05 in chinese cabbages.

In the results obtained by Lee (1969) and Choi and Lee (1972), the mean number of ascarid egg per 200 grams of vegetable was 7.5 in young radishes, 3.l in lettuces, and 0.5 in chinese cabbages. By contrast, in the present study it was 0.6 in young radishes and 0.3 in both lettuces and chinese cabbages.

These results suggest that there has been significant reduction in the incidence of parasite egg and larva on vegetable leaves during the past 10 years.

Tables


Table 1
Number of leaves and vegetable weight in 25 lettuces, young radishes, and Chinese cabbages collected from 6 markets of Taegu City (1983)


Table 2
Number and species of parasite eggs and larvae attached on the leaves of lettuces (1983)


Table 3
Number and species of parasite eggs and larvae attached on the leaves of young radishes (1983)


Table 4
Number and species of parasite eggs and larvae attached on the leaves of chinese cabbages (1978)


Table 5
Comparison of mean number of ascarid eggs found per 200 grams in each of lettuce, young radish and Chinese cabbage in 1969 and 1969 and 1972 with that in 1983

References
1. Choi DW, Ahn DH, Choy CH, Kim SS. Clonorchis Sinensis In Kyungpook Province, Korea: 3. Changing Pattern Of Clonorchis Sinensis Infection Among Inhabitants. Korean J Parasitol 1976;14(2):117–122.
 
2. Choi DW, Ock MS, Suh JW. Recent Demonstration Of Helminth Eggs And Larvae From Vegetable Cultivating Soil. Korean J Parasitol 1982;20(2):83–92.
 
3. Choi DW, Lee S. Incidence of parasites found on vegetables collected from markets and vegetable gardens in Taegu area. Korean J Parasitol 1972;10(1):44–51.
 
4. Choi WY, Chang K. [The Incidence Of Parasites Found Of Vegetables]. Korean J Parasitol 1967;5(3):153–158.
 
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