1. USDA-ARS, SAA Food Science Research Unit, 322 Schaub Hall, Box 7624; North Carolina State Univ.; Raleigh; NC; 27695-7624; U.S.A.
2. Natl. Taiwan Univ.; Taipei; Taiwan; Republic of China
3. Dept. of Biology; Kyungsung Univ.; Busan; 608-736; South Korea