Studies on the characteristics of Leucaena leucocephala as feedstuff and effective utilization of its components

为了阐明银合欢作为热带植物资源的高利用率，研究了银合欢饲料发酵原料提取液对两种疾病大鼠(自发性高血压大鼠：自发性高血压大鼠和果糖诱导高脂血症大鼠：FHR)血压、血脂和主要器官病理学的影响。本实验采用热水提取的银合欢提取液(银合欢茶)，该溶液从青贮料中制备并在120ﾟ烘箱中烘干。在实验期间，以乌龙茶和自来水为对照，定期测量两种类型大鼠自由饮水12周后的血压、日增重和饮水量。实验结束后，取血分离血浆和血清，测定总胆汁…含量。结果如下：1)银合欢茶和乌龙茶的化学成分无显著差异，但银合欢茶的钙含量是乌龙茶的50倍。2)SHR和FHR加水的银合欢茶或乌龙茶的最高血压与对照组相比有所降低。3)加水银合欢茶的SHR组血浆TC、HDLc和PL的含量略高于对照组。各组高密度脂蛋白胆固醇/总胆固醇比值相同。可以认为，银合欢茶和乌龙茶对胆固醇含量没有影响。灌服银合欢茶或乌龙茶的FHR组大鼠血浆总胆固醇、高密度脂蛋白胆固醇和磷脂含量均显著低于对照组。4)从组织学观察，银合欢茶对自发性高血压大鼠无明显影响，但提示银合欢茶可减少自发性高血压大鼠肝脏脂肪蓄积。较少

To clarify a high utilization of Leucaena as tropical plant resources, the study was investigated to effect of extracted solution from fermented Leucaena materials produced for Leucaena feedstuff on blood pressure, plassa lipid and pathological observation of main organs of two type of disease rats(spontaneously hypertensive rats : SHR and rats withfructose-induced hyperlipidenia : FHR).The Leucaena solution extracted with hot water(Leucaena tea)was used in this experiment, which solution was obtained from a silage prepared and oven dried in 120ﾟC. Miseosine in Leucaena leaf and stem materials was removed by the method mentioned above. In the experiment periodblood pressure, daily gain and watering intake of two type of rats watered freely for twelve weeks were measured periodically, compared to ones watered Oolong tea and tap water(control). After the end of experimental period, all the rats were collected blood and separated to plasma and serum to measure the content of total cholest … More erol(TC), HDL-cholesterol(HDL-C), triglycerid(TG)and phospholipid(PL), respectively.The results obtained were as follows.1)There were no remarkable differences between the chemical compounds of Leucaene and Oolong tea, except of fifty times of calcium content in Leucaena tea compared to Oolong tea.2)The high maximum blood pressure of SHR and FHR watered Leucaena tea or Oolong tea was reduced compared to control group.3)The contents of TC, HDL-C and PL in plasma in SHR group watered with Leucaene tea were a little higher than control. The same value of HDL-C/TC ratio was shown in respective group. It can be considered that there is no effect of Leucaena and Oolong tea on the cholesterol content. On the other hand, the contents of TC, HDL-C and PL in plasma of FHR group watered with Leucaena or Oolong tea were significantly lower than control. It is considered that the upward tendency of plasmalipid in FHR group is suppressed by being watered with Leucaena or Oolong tea.4)There is no effect of Leucaena tea to SHR from the observation of tissue with a microscope, but it is suggested that Leucaena tea reduce an accumulation of fat in liver in FHR group. Less