| aflatoxin b1 in common egyptian foods. | samples of common egyptian foods (17 nuts and seeds, 10 spices, 31 herbs and medicinal plants, 12 dried vegetables, and 28 cereal grains) were collected from markets in cairo and giza. a portion of each sample was extracted with chloroform, and the concentrated extract was cleaned by passing through a silica gel column. aflatoxin b1 was determined by reversed-phase liquid chromatography with uv detection. the highest prevalence of aflatoxin b1 was in nuts and seeds (82%), followed by spices (40% ... | 2015 | 8823921 |