【摘要】：本試驗共收集陜西及山西不同地區(qū)2014年玉米共15個樣品,主要包括陜西三原、華縣、富平、涇陽、高陵、澄縣、武功、閻良以及山西運城、新絳等地區(qū),分別從玉米樣品的容重、水分含量、粗蛋白含量、粗脂肪含量、霉變率、霉菌毒素污染情況等方面進行檢測并進行統(tǒng)計分析。統(tǒng)計結(jié)果顯示樣品水分含量在14.56%~16.21%之間,所有試驗樣品水分含量均超出國家飼用玉米標(biāo)準(zhǔn);樣品中容重達到一級標(biāo)準(zhǔn)的為9號與10號樣品,分別為710.87 g/L和711.53 g/L,即陜西高陵及涇陽地區(qū),13號樣品容重最低,為山西運城地區(qū)樣品;粗蛋白的含量在7.35%~8.94%之間;玉米樣品的粗脂肪含量有較大差異,含量最高的樣品與最低樣品相差2.11個百分點,不同地區(qū)玉米樣品粗脂肪含量的變異系數(shù)也有較大差異;不同地區(qū)來源玉米樣品中霉變率有7個樣品未達到標(biāo)準(zhǔn),不合格率將近50%;試驗樣品中除陜西涇陽、武功及山西運城三個樣品外,其他樣品黃曲霉毒素、玉米赤霉烯酮及嘔吐毒素三種霉菌毒素均為陰性,收集的不同地區(qū)玉米樣品中,嘔吐毒素和玉米赤霉烯酮的感染率比較高。綜合分析以上指標(biāo),涇陽地區(qū)玉米品質(zhì)較好。
[Abstract]:A total of 15 samples of 2014 corn were collected from Shaanxi and different regions of Shanxi Province, including Sanyuan, Huaxian, Fuping, Jingyang, Gaoling, Cheng, Wugong, Yan Liang, Yuncheng and Xinjiang areas. The bulk weight, moisture content, crude protein content, crude fat content, mildew rate and mycotoxin contamination of corn samples were detected and analyzed statistically. The statistical results showed that the moisture content of the samples was between 14.56% and 16.21%, and the moisture content of all the tested samples exceeded the national standard of forage corn. The volume density of samples 9 and 10 were 710.87 g / L and 711.53 g / L, that is, Gaoling and Jingyang, Shaanxi Province, respectively, and the bulk density of sample No. 13 was the lowest, which was the sample in Yuncheng area, Shanxi Province. The content of crude protein was between 7.35% and 8.94%. The difference of crude fat content between the highest sample and the lowest sample was 2.11%, and the coefficient of variation of crude fat content in different regions was also different. The mildew rate of maize samples from different areas was not up to the standard, and the unqualified rate was nearly 50%. Except the three samples of Jingyang, Wugong and Yuncheng of Shanxi Province, the other samples were negative for aflatoxin, zearalenone and vomiting toxin. In the corn samples collected from different areas, The infection rates of vomiting toxin and zearalenone were higher. Comprehensive analysis of the above indicators, Jingyang corn quality is better.
【學(xué)位授予單位】：西北農(nóng)林科技大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：S816;S859.8

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