摘要
针对干燥加工设备与干燥工艺不匹配而导致营养物质损失的问题,提出了一种内强制阶段式的新型苜蓿干燥工艺流程,对草捆进行分阶段式干燥,分为快速干燥阶段(将草捆的含水率从35%降至25%)以及降速干燥阶段(再从25%降至17%),测量不同含水率状态下苜蓿草捆的蛋白质、中性洗涤纤维以及酸性洗涤纤维的含量,对试验数据进行了显著性分析,并对新型干燥工艺的效果稳定性进行试验。试验结果表明,新型苜蓿干燥工艺相对于自然晾晒工艺的主要营养成分具有显著性的差异(P<0.05),能够有效地将蛋白质损失率从30%-50%降至15.6%左右,中性洗涤纤维含量最优可控制在36.3%,酸性洗涤纤维含量最优可控制在31.3%。
In response to the problem of nutrient loss caused by the mismatch between drying processing equipment and drying process,this paper proposes a new type of alfalfa drying process with internal forced stage,which is divided into the stage of rapid drying(reducing the moisture content of the bale from 35%to 25%)and the stage of reduced-speed drying(reducing the moisture content of the bale from 25%to 17%),and then measures the protein,neutral detergent fiber and acid detergent fiber contents of alfalfa bales in different moisture content states,and analyzes the test data significantly and tests the stability of the effectiveness of the new drying process.Protein,neutral detergent fiber and acid detergent fiber contents of alfalfa bales at different moisture content states were measured,the test data were analyzed for significance,and the stability of the effect of the new drying process was tested.The test results showed that the new alfalfa drying process had a significant difference(P<0.05)in the main nutrients relative to the natural drying process,and was able to effectively reduce the protein loss rate from 30%-50%to about 15.6%,and the content of neutral detergent fiber could be optimally controlled at 36.3%,and the content of acid detergent fiber could be optimally controlled at 31.3%.
作者
王帅
李辉
张华
丁立利
贺成柱
孙安
毛新宇
宋金库
WANG Shuai;LI Hui;ZHANG Hua;DING Li-li;HE Cheng-zhu;SUN AnMAO Xin-yu;SONG Jin-ku(College of Electromechanical Engineering,Gansu Agricultural University,Lanzhou Gansu 730070,China;Gansu Provincial Research Institute of Mechanical Science,Lanzhou Gansu 730030,China)
出处
《林业机械与木工设备》
2024年第4期72-78,共7页
Forestry Machinery & Woodworking Equipment
基金
甘肃农业大学公招博士科研启动项目(GAU-KYQD-2021-33)
甘肃省农业农村厅农机装备研发攻关项目(njyf2024-04-1)
甘肃省科技计划项目“高效节能牧草干燥智能化装备的研发”(21YF5NA043)。
