Humans are greatly affected by aflatoxin exposure via the dietary intake of pistachio nuts which pose a serious health risk. This study analysed the reduction of aflatoxin-B1 (AFB1) in pistachio using the exposure of gamma-rays of radioactive granite rock (RGR). The AFB1 level was measured using high-performance liquid chromatography (HPLC). Meanwhile, the reduction of AFB1 in pistachios was examined in two steps. In the first step, AFB1 reduction was examined via different masses of pistachio paste placed on the RGR bed which measured approximately 45% of AFB1 reduction. Whereas, 97% reduction in AFB1 was observed in pistachios within the small packets placed on the RGR bed. The second step was designed to investigate the effects of irradiation time and mass of RGR bed on the AFB1 reduction using RGR bed. Based on the results, the increase in AFB1 reduction level was recorded by increasing the γ-ray irradiation time and the mass of RGR. Through the introduction of the pistachio dosimetric AFB1 reduction coefficient (η), an empirical formula was developed to predict the amount of AFB1 reduction in the pistachio by RGR bed. Overall, the consistency level between empirical formulas and practical results is about 84–87%. Meanwhile, the gamma radiation was calculated using the Monte Carlo N Particle eXtended (MCNPX) simulation code. In conclusion, the proposed novel technique demonstrated RGR to be a suitable industrial substrate for safe and hygienic storage of pistachios.

人类因食用开心果而受到黄曲霉毒素暴露的极大影响，开心果会带来严重的健康风险。本研究使用放射性花岗岩 (RGR) 的伽马射线照射，分析了开心果中黄曲霉毒素 B1 (AFB1) 的减少情况。使用高效液相色谱 (HPLC) 测量 AFB1 水平。同时，分两步检查开心果中AFB1的减少。在第一步中，通过放置在 RGR 床上的不同质量的开心果酱来检查 AFB1 的减少，测量大约 45% 的 AFB1 减少。然而，在放置在 RGR 床上的小包内的开心果中观察到 AFB1 减少了 97%。第二步旨在研究辐照时间和 RGR 床质量对使用 RGR 床减少 AFB1 的影响。根据结果​​，通过增加γ射线照射时间和RGR的质量来记录AFB1还原水平的增加。通过引入开心果剂量测定 AFB1 减少系数 (η)，开发了一个经验公式来预测 RGR 床对开心果中 AFB1 的减少量。总体而言，经验公式与实际结果的一致性水平约为 84-87%。同时，使用 Monte Carlo N Particle eXtended (MCNPX) 模拟代码计算伽马辐射。总之，所提出的新技术表明 RGR 是一种合适的工业基质，可安全卫生地储存开心果。开发了一个经验公式来预测 RGR 床对开心果中 AFB1 的减少量。总体而言，经验公式与实际结果的一致性水平约为84-87%。同时，使用 Monte Carlo N Particle eXtended (MCNPX) 模拟代码计算伽马辐射。总之，所提出的新技术表明 RGR 是一种合适的工业基质，可安全卫生地储存开心果。开发了一个经验公式来预测 RGR 床对开心果中 AFB1 的减少量。总体而言，经验公式与实际结果的一致性水平约为 84-87%。同时，使用 Monte Carlo N Particle eXtended (MCNPX) 模拟代码计算伽马辐射。总之，所提出的新技术表明 RGR 是一种合适的工业基质，可安全卫生地储存开心果。