Reyes-Velázquez Waldina Patricia, Isaías Espinoza Victor Hugo, Rojo Federico, Jiménez-Plasencia Cecilia, de Lucas Palacios Ernesto, Hernández-Góbora Jorge, Ramírez-Alvarez Agustín
Laboratorio de Micotoxicología (Departamento de Salud Pública), Centro Universitario de Ciencias Biológicas y Agropecuarias (CUCBA), Universidad de Guadalajara (UDG), Jalisco, México.
Rev Iberoam Micol. 2008 Sep 30;25(3):182-5.
The aim of this study was to evaluate the chemical composition, mold count and mycotoxin contamination of corn silage collected during a six month-period. The results indicated that the chemical composition and the physicochemical parameters evaluated did not show significant variation during the sampling time. Fungal count on RBC ranged from 1.7 x 10(3) to 9 x 10e8 CFU/g. Mucor, Penicillium and Aspergillus spp. were the most frequent fungal species in the corn silage. Fusarium count ranged from 1.6 x 10(3) to 1.6 x 10e8 CFU/g in Nash Snyder culture media. Aflatoxin B, fumonisins, ochratoxin A, ochratoxin B, deoxynivalenol, and zearalenone were detected throughout the period of corn silage maintenance (100% positive samples). However, only deoxynivalenol levels were higher than the maximum limit recommended by the FDA.
本研究的目的是评估在六个月期间收集的玉米青贮饲料的化学成分、霉菌数量和霉菌毒素污染情况。结果表明,所评估的化学成分和理化参数在采样期间未显示出显著变化。红细胞计数法测得的真菌数量范围为1.7×10³至9×10⁸CFU/g。毛霉、青霉和曲霉属是玉米青贮饲料中最常见的真菌种类。在纳什·斯奈德培养基中,镰刀菌数量范围为1.6×10³至1.6×10⁸CFU/g。在整个玉米青贮饲料保存期间均检测到黄曲霉毒素B、伏马毒素、赭曲霉毒素A、赭曲霉毒素B、脱氧雪腐镰刀菌烯醇和玉米赤霉烯酮(100%的样本呈阳性)。然而,只有脱氧雪腐镰刀菌烯醇的含量高于美国食品药品监督管理局推荐的最大限量。