Natural occurrence of fumonisins B_1 and B_2 in Korean corns

摘要

One hundred and ninety seven corn samples, which collected from each local province in Korea between 1995 and 1996, were analyzed for fumonisin B_1 (FB_1) and B_2 (FB_2) contamination using fluometric HPLC. FB_1 and FB_2 were detected in 143 (72.6%) and 128 (62.4%) samples from 197 samples at the concentrations ranging from 0 to 224.2 #mu#g/g for FB_1 and from 0 to 60.0 #mu#g/g for FB_2, respectively. The total fumonisin levels analyzed from 143 samples were 15.4, 37.5 and 14% for concentrations below 10 #mu#g/g, above 10 #mu#g/g and above 30 #mu#g/g, respectively. The total fumonisin levels containing above 10 #mu#g/g were detected the highest concentration with 53.2% in samples collected from Kangwon, and followed by Kyeongki (45.0%), Cheonbuk (40.0%), Chungbuk (26.9%) and Kyeongbuk (11.1%). The total fumonisin level containing above 10 #mu#g/g in samples collected in 1996 was higher than that in 1995. Both fumonisin B_1 and B_2 from samples collected in 1995 were detected higher than that in 1996 and FB_1 was detected the highest level in samples collected from Kyeongki province and followed by Kangwon, Cheonbuk, Chungbuk and Kyeogbuk (11.1%). Also, similar results were observed in FB_2.