6月,可謂是吃貨的季節。嘗不盡的各式鮮果,應季時蔬。這個時候便是玉米大量上市的季節,幾乎家家戶戶的飯桌上都會出現它的身影。玉米中含有大量的營養物質,不僅含有碳水化合物、蛋白質,還有大量對人體有益的營養物質,深得人們的喜愛。
玉米全身都是寶,今天咱們來說說玉米殼纖維。吃完香甜的玉米,可別急著扔掉玉米殼,玉米殼可以變廢為寶。它可以成為色彩豐富又環保的手工藝品,科學家們也可以使用玉米殼生產廉價的氫燃料成為再生燃料。
東華大學張彥中教授也在利用玉米殼來研究仿生材料與再生醫學,張老師一直從事纖維生物材料與人體組織器官再生的基礎和應用研究。通過合理調控纖維生物材料的化學、生物、結構、力學等要素來模擬(干)細胞生存的微環境,從而增強(干)細胞對生物材料支架的生物響應特性和對傷病組織的再生修復能力。
此次張教授的實驗目的是根據實驗要求需把玉米殼纖維研磨碎進行分析和檢測,隨后根據實驗要求做后續實驗
實驗材料和器具:
樣品:玉米殼纖維
儀器:研磨儀(上海凈信,JXFSTPRP-48)
配件:聚乙烯研磨罐,配套研磨珠.
耗材:液氮
JXFSTPRP系列研磨儀采用了特殊的上下及左右晃動三維一體的震動模式,樣品在空間呈8字形三維運動,通過研磨珠(氧化鋯、鋼珠、玻璃珠、陶瓷珠)的高頻往復振動、撞擊、剪切。快速的實現目的。使研磨的樣品具有更加充分、更均勻、樣品重復性更好、樣品之間沒有交叉污染
產品特點:
1.操作數量多,高效快速效果好抽提的蛋白比活更高,核酸片斷更長。
2.無交叉污染,操作簡便,重復性好
3.穩定性好噪音小于55dB,不會對其它實驗或儀器產生干擾。
4.方便低溫操作
實驗步驟:
1.準備好若干ml聚乙烯研磨罐,配套研磨珠。
2.把準備好的玉米纖維放入聚乙烯研磨罐中放入配套研磨珠蓋好,放入液氮中浸泡若干分鐘;
3.把侵泡好的罐子放入冷凍研磨儀中,設置參數,程序結束后即可破碎。
5.完成后做后續實驗。
6.進行分析再做再生實驗。
實驗結果:
注意事項:
1.研磨罐和研磨珠需充分清洗干凈并烘干備用;則研磨罐和研磨珠要確保滅酶;
2.每個研磨罐研磨樣品量一般遵循原則:樣品體積不超過離心管容積的三分之一。
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