等离子体降解花生中黄曲霉毒素的影响因素

摘要

The effect of the processing time,power,and moisture content,particle size,variety of peanut on the degradation of aflatoxin B1 (AFB 1 )was explored by treating AFB 1 with low temperature radio fre-quency plasma and analyzing the degradation rate by HPLC. The results showed that within the same pro-cessing time the higher the plasma processing power,the higher the degradation rate of AFB 1 ,which could reach up to 73. 45% when the power was 400 W;within the same processing power,the longer the processing time,the higher the degradation rate of AFB 1 ,which could reach up to 79. 26% in 8 min;under the same conditions,the higher the moisture content in the peanut,the higher the degradation rate of AFB1 ,which could reach up to 50% when the moisture content was 40%;the smaller the peanut par-ticle,the higher the degradation rate of AFB 1 ,which could reach up to about 60% in peanut powder;the higher the oil content in peanut,the lower the degradation rate of AFB 1 ,which was only 45% when peanut oil content was 45% . The results show that the external condition has noticeable influence on the degradation of AFB1 by plasma technic,which has a guiding role for practical application.%采用低温射频等离子体技术处理黄曲霉毒素B 1（AFB 1），通过HPLC分析其中AFB 1的降解率，探究不同处理时间、处理功率等离子体和不同水分含量、颗粒大小、种类的花生对AFB 1降解的影响。结果表明，在相同时间下等离子体处理功率越大，花生中的AFB 1降解得越多，400 W时降解率为73．45％；在相同处理功率下，处理时间越长，花生中的AFB 1降解越多，8 min 后降解率为79．26％；在相同条件下，花生中水分含量越高，AFB 1的降解率越高，含水量达到40％时降解率达到50％；花生的颗粒越小，AFB 1的降解率越高，花生粉的降解率达到近60％；含油量越高的花生，其AFB1降解率越低，花生的含油量为45％时降解率只有45％。得出等离子体技术降解AFB 1时，外界条件对降解有较大影响，该结果对实际应用有指导作用。