红枣泥的研制

Preparation of jujube mud

实验以提取多糖后的红枣湿渣为原料,以感官评分和菌落总数为评价指标。采用单因素和正交实验对红枣泥的工艺配方和微波杀菌工艺进行优化。同时又分析了杀菌对红枣泥色差的影响。结果表明:最佳工艺配方为(以红枣泥质量计):柠檬酸0.15%、蔗糖8%、海藻酸钠0.6%,在此工艺下红枣泥的感官得分96.5;微波杀菌最佳工艺参数为:微波功率800 W、灭菌时间90s、装载量100 g,在此工艺下红枣泥的菌落总数为45 cfu/g。与巴氏杀菌相比,红枣泥色泽变化不显著。

The numerical mode of carbon fiber T-joints was built by finite element analysis software, and its cohesive mode technique. The damage formation, extension and failing process of T-joints under tensile load were investigated. Then the static tension test was carried out on the carbon fiber T-joints. The test results demonstrate that the initial damage load was between 9.8 kN and 12.0 kN, and after the damage appeared, the bearing value on the T-joints descends sharply （approximately by 27%-38%）. The ultimate damage load is between 8.0 kN and 8.6 kN, which is slightly lower than the initial one, because the filling area was destroyed. Both of the numerical and test results confirm that the filling area is the weakest part of the T-joints where the damage first appears. The crack then rapidly spreads to the glue film around the filling area. It was the peeling off of the glue film that accounts mostly for the failure of T-joints.