1. Hazardous Substances Analysis Div.; Daegu Regional Food and Drug Administration; Daegu 704-940 Korea
2. School of Food Science and Biotechnology; Kyungpook National University; Daegu 41566 Korea
3. School of Food Science and Biotechnology; Kyungpook Natl. Univ.; Daegu 41566 Korea
4. Inst. of Home and Food Sciences; Government College Univ.; Faisalabad 36000 Pakistan