College of Ocean Food and Biological Engineering, Jimei University, Xiamen 361021, China; Nutritional Science and Epidemiology Group, School of Food Science and Nutrition, University of Leeds, Leeds, UK.
Nutritional Science and Epidemiology Group, School of Food Science and Nutrition, University of Leeds, Leeds, UK.
Food Chem. 2024 May 15;440:138212. doi: 10.1016/j.foodchem.2023.138212. Epub 2023 Dec 15.
The adsorption of aflatoxin B (AFB) to natural fiber materials prepared from corn by-products was investigated in this study. The results showed that corn cob powder (CCP) dose, particle size, time (0.25-24 h), temperature (4, 20, 37, 50 and 100 °C) and pH (2-8), had significant effects on adsorption. The maximum adsorption (98%) was with particles 500-355 µm in size at 20 °C for 8 h, at the dose of 50 mg mL. The adsorption fitted pseudo-second-order model and Langmuir isotherm well. Besides, CCP had a higher adsorption capacity to AFB than any single cell wall components of corn, which indicated that capillary effect happened in cell wall might be the main reason for adsorption. The results also suggested that CCP could reduce AFB content from both liquid and solid food matrixes. Briefly, CCP displayed promising properties that could be developed in nature-based practical applications for food aflatoxin decontamination.
本研究考察了从玉米副产物制备的天然纤维材料对黄曲霉毒素 B（AFB）的吸附作用。结果表明，玉米芯粉（CCP）剂量、粒径、时间（0.25-24 小时）、温度（4、20、37、50 和 100°C）和 pH 值（2-8）对吸附有显著影响。在 20°C 下，粒径为 500-355μm，剂量为 50mg·mL-1 时，吸附效果最佳，最大吸附率为 98%。吸附过程更符合拟二级动力学模型和 Langmuir 等温线。此外，CCP 对 AFB 的吸附能力高于玉米的任何单个细胞壁成分，这表明细胞壁中的毛细作用可能是吸附的主要原因。研究结果还表明，CCP 可降低液体和固体食品基质中 AFB 的含量。总之，CCP 表现出有前景的特性，可在基于自然的食品中黄曲霉毒素脱除的实际应用中得到开发。
