Korean J Parasitol.  1983 Jun;21(1):105-110. 10.3347/kjp.1983.21.1.105.

Change in incidence of parasite eggs and larvae from vegetable in the markets of Taegu

Affiliations
  • 1Department of Home Management, Department of Food and Nutrition, College of Home Economics, Yeung Nam University, Taegu, Korea.
  • 2Department of Parasitology, Kyungpook National University, School of Medicine, Taegu, Korea.
  • 3Department 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 percent), followed by hookworm egg (3.6 percent). 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.


MeSH Terms

parasitology-helminth-nematoda-trematoda
ascarid
Trichostrongylus
Clonorchis sinensis
hookworm
filariform larva
rhabditoid larva
egg
epidemiology
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