| isolation, identification and toxigenic potential of ochratoxin a-producing aspergillus species from coffee beans grown in two regions of thailand. | in 2006 and 2007, 32 thai dried coffee bean samples (coffea arabica) from two growing sites of chiang mai province, and 32 thai dried coffee bean samples (coffea canephora var. robusta) from two growing sites of chumphon province, thailand, were collected and assessed for the distribution of fungi with the potential to produce ochratoxin a (ota). the overall percentage of fungal contamination in coffee was 98% and reduced to 60% after surface disinfection. there were remarkable ecological differ ... | 2008 | 18819720 |