Relationship Between Equilibrium Relative Humidity and Deterioration of Shelled Corn
Relationship Between Equilibrium Relative Humidity and Deterioration of Shelled Corn
复制标题
平衡相对湿度与带壳玉米劣化的关系
DOI：
10.13031/2013.27931
复制
发表时间：
1995
影响因子：
1.5
通讯作者：
J. P. Lang
中科院分区：
文献类型：
--
作者：
H. Ng;R. .. Morey;W. F. Wilcke;R. Meronuck;J. P. Lang
以脱壳玉米为试验材料，测定了杂交和机械损伤对脱壳玉米平衡相对湿度（ERH）和允许贮藏时间（AST）的影响（由CO2产量和真菌引起的干物质损失决定）。结果表明，机械损伤16%的玉米的ERH低于机械损伤2%的玉米，但机械损伤较大的玉米的AST较短，通常情况下，较低ERH下真菌生长较慢（即AST较长）。显然，尽管机械损伤降低了ERH，但与机械损伤相关的种子果皮破损使真菌生长更快。先锋杂交种P3377的ERH高于FRB73、Mo17和FR35、FR20。ERH的差异有助于解释杂交种储存性的差异。在水分含量为13% ~ 22%的玉米中，化学成分可以在2个百分点的范围内预测各杂交种的ERH，从而预测各杂交种的相对贮藏性。
The effects of hybrid and mechanical damage on equilibrium relative humidity (ERH) and allowable storage time (AST), as determined by CO2 production and dry matter loss caused by fungi, were measured for shelled corn. The results were used to study the relationship between ERH and AST. Corn with 16% mechanical damage had lower ERH than corn with 2% mechanical damage, but corn with greater mechanical damage had shorter AST. Normally, fungi grow more slowly (meaning AST is longer) at lower ERH. Apparently, the seed pericarp breakage associated with mechanical damage allowed faster fungal growth even though mechanical damage reduced ERH. Pioneer hybrid P3377 had higher ERH and shorter AST than hybrids FRB73¥Mo17 and FR35¥FR20. Differences in ERH helped explain the differences in storability of the hybrids. For 13 to 22% moisture corn, chemical composition could be used to predict the ERH of each hybrid within two percentage points, and thus composition could be used to predict the relative storability of each hybrid.