摘要
目的研究含水量对玉米粉贮藏过程中黄曲霉生长及黄曲霉毒素B_1积累的影响。方法将初始水分含量10.42%、13.26%、16.35%、19.88%的玉米粉在28℃,相对湿度75%的模拟环境中储藏30d;测定贮藏期间玉米粉含水量、黄曲霉生长量及黄曲霉毒素B_1的积累量。结果贮藏期间玉米粉中含水量呈现先上升后下降的变化趋势,黄曲霉生长量及黄曲霉毒素B1的积累量随贮藏时间的延迟先快速升高,后趋于平稳。初始含水量较高的玉米粉贮藏期间含水量、黄曲霉生长量及黄曲霉毒素B_1含量始终处于较高的水平。相关性分析表明,玉米粉含水量、黄曲霉生长量和毒素积累量之间均呈极显著的正相关(P<0.01)。结论含水量是影响玉米粉贮藏过程中霉菌生长和毒素积累的关键因素,降低玉米粉初始含水量可以有效减轻贮藏期间真菌危害。
Objective To study the effects of water content on growth of Aspergillus flavus and accumulation of aflatoxin B1 in corn flour during storage. Methods The corn flour with initial moisture content of 10.42%, 13.26%, 16.35% and 19.88% was stored at 28 ℃ and 75% relative humidity for 30 d. The water content of corn flour during storage, the growth of Aspergillus flavus and the accumulation of aflatoxin B1 were determined. Results During the storage period, the water content in corn flour increased first and then decreased. The growth of Aspergillus flavus and the accumulation of aflatoxin B1 increased rapidly with the delay of storage time, and then stabilized. The water content, the growth of Aspergillus flavus and the aflatoxin B1 content of corn flour with higher initial water content were always at a higher level during storage. Correlation analysis showed that there was a significant positive correlation between corn water content with Aspergillus flavus growth and toxin accumulation （P〈0.01）. Conclusion Water content is the key factor affecting mold growth and toxin accumulation during corn meal storage, so reducing the initial water content of corn flour can effectively reduce fungal damage during storage.
作者
及华
张海新
李运朝
刘怡菲
李洪涛
JI Hua;ZHANG Hai-Xin;LI Yun-Chao;LIU Yi-Fei;LI Hong-Tao(Research Center for Agricultural Products Quality and Safety,Hebei Academy of Agricultural and Forestry Sciences,Shijiazhuang 050051,China;Hebei Professional College of Political Science and Law,Shijiazhuang 050061,China;Hebei Province Institute of Veterinary Drug Control,Shijiazhuang 050035,China)
出处
《食品安全质量检测学报》
CAS
2018年第22期5863-5866,共4页
Journal of Food Safety and Quality
基金
河北省财政专项(F17R11
2018110201)~~
关键词
玉米粉
含水量
黄曲霉
黄曲霉毒素
相关性
corn flour
water content
Aspergillus flavus
aflatoxin
correlation
