Selim M I, Popendorf W, Ibrahim M S, el Sharkawy S, el Kashory E S
Department of Preventive Medicine and Environmental Health, College of Medicine, University of Iowa, Iowa City, USA.
J AOAC Int. 1996 Sep-Oct;79(5):1124-9.
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%), herbs and medicinal plants (29%), dried vegetables (25%), and cereal grains (21%). The highest mean concentration of aflatoxin B1 was in herb and medicinal plants (49 ppb), followed by cereals (36 ppb), spices (25 ppb), nuts and seeds (24 ppb), and dried vegetables (20 ppb). Among nuts and seeds, the prevalence of aflatoxin B1 was highest (100%) in watermelon seeds, inshell peanuts, and unshelled peanuts. The lowest prevalence and concentrations were in hommos (garbanzo beans). The highest concentrations of aflatoxin B1 were detected in foods that had no potential for field contamination but required drying during processing and storage, such as pomegranate peel, watermelon seeds, and molokhia.
从开罗和吉萨的市场收集了常见埃及食品样本（17种坚果和种子、10种香料、31种草药和药用植物、12种干蔬菜以及28种谷物）。每个样本的一部分用氯仿提取，浓缩提取物通过硅胶柱进行净化。采用带紫外检测的反相液相色谱法测定黄曲霉毒素B1。黄曲霉毒素B1的最高检出率出现在坚果和种子中（82%），其次是香料（40%）、草药和药用植物（29%）、干蔬菜（25%）以及谷物（21%）。黄曲霉毒素B1的最高平均浓度出现在草药和药用植物中（49 ppb），其次是谷物（36 ppb）、香料（25 ppb）、坚果和种子（24 ppb）以及干蔬菜（20 ppb）。在坚果和种子中，西瓜籽、带壳花生和去壳花生的黄曲霉毒素B1检出率最高（100%）。鹰嘴豆（鹰嘴豆泥）中的检出率和浓度最低。在石榴皮、西瓜籽和锦葵叶等没有田间污染可能性但在加工和储存过程中需要干燥的食品中，检测到了最高浓度的黄曲霉毒素B1。
