一种桑叶提取物、鳜鱼饲料及其应用制造技术

本发明专利技术提供了一种桑叶提取物、鳜鱼饲料及其应用，属于天然产物在水产饲料技术领域。本发明专利技术提供一种桑叶提取物，以桑叶多糖和桑叶黄酮为主要活性成分。在鳜鱼配合饲料中添加5g/kg的桑叶提取物能显著提高鳜鱼的体重和体长，且随着桑叶提取物浓度的提高，鳜鱼的成活率不断提高；添加适量的桑叶提取物能够显著提高鳜鱼血清抗氧化能力、改善肝脏和肠道健康、提高鳜鱼的肠道吸收能力的作用。因此，本发明专利技术提供了所述桑叶提取物或含桑叶提取物的鳜鱼饲料在鳜鱼养殖中的应用。在鳜鱼养殖中的应用。在鳜鱼养殖中的应用。

【技术实现步骤摘要】
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【技术保护点】

【技术特征摘要】
1.一种桑叶提取物，其特征在于，含有桑叶多糖和桑叶黄酮；所述桑叶多糖的浓度为350mg/g～550mg/g，所述桑叶黄酮的浓度为30mg/g～100mg/g。2.一种权利要求1所述桑叶提取物的制备方法，其特征在于，包括以下步骤：将桑叶经石油醚处理，得到预处理桑叶；将所述预处理桑叶用乙醇水溶液提取，分离液相，得到桑叶提取物。3.根据权利要求2所述制备方法，其特征在于，所述桑叶和石油醚的料液比为1g：18～22mL。4.根据权利要求2所述制备方法，其特征在于，所述石油醚处理包括石油醚提取和回流处理；所述石油醚提取的时间为10～14h；所述回流处理的时间为1.5～2.5h，所述回流处理的温度为55～65℃。5.根据权利要求2所述制备方法，其特征在于，所述预处理桑叶和乙醇水溶液的料液比为1g：28～32mL；所述乙醇水溶液的体积百分含量为70％～80％。6.根据权利要求2～5任意一项所述制备方法，其特征在于，所述乙醇水溶液提取的次数为2～3次；在每次乙醇水溶液提取时，...

【专利技术属性】
技术研发人员：周东来，刘凡，邝哲师，廖森泰，杨琼，李庆荣，邢东旭，邹宇晓，黎尔纳，
申请(专利权)人：广东省农业科学院蚕业与农产品加工研究所，
类型：发明
国别省市：