6月,可謂是吃貨的季節(jié)。嘗不盡的各式鮮果,應(yīng)季時(shí)蔬。這個(gè)時(shí)候便是玉米大量上市的季節(jié),幾乎家家戶(hù)戶(hù)的飯桌上都會(huì)出現(xiàn)它的身影。玉米中含有大量的營(yíng)養(yǎng)物質(zhì),不僅含有碳水化合物、蛋白質(zhì),還有大量對(duì)人體有益的營(yíng)養(yǎng)物質(zhì),深得人們的喜愛(ài)。
玉米全身都是寶,今天咱們來(lái)說(shuō)說(shuō)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(huán)保的手工藝品,科學(xué)家們也可以使用玉米殼生產(chǎn)廉價(jià)的氫燃料成為再生燃料。
東華大學(xué)張彥中教授也在利用玉米殼來(lái)研究仿生材料與再生醫(yī)學(xué),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(chǔ)和應(yīng)用研究。通過(guò)合理調(diào)控纖維生物材料的化學(xué)、生物、結(jié)構(gòu)、力學(xué)等要素來(lái)模擬(干)細(xì)胞生存的微環(huán)境,從而增強(qiáng)(干)細(xì)胞對(duì)生物材料支架的生物響應(yīng)特性和對(duì)傷病組織的再生修復(fù)能力。
此次張教授的實(shí)驗(yàn)?zāi)康氖歉鶕?jù)實(shí)驗(yàn)要求需把玉米殼纖維研磨碎進(jìn)行分析和檢測(cè),隨后根據(jù)實(shí)驗(yàn)要求做后續(xù)實(shí)驗(yàn)
實(shí)驗(yàn)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(dòng)三維一體的震動(dòng)模式,樣品在空間呈8字形三維運(yùn)動(dòng),通過(guò)研磨珠(氧化鋯、鋼珠、玻璃珠、陶瓷珠)的高頻往復(fù)振動(dòng)、撞擊、剪切??焖俚膶?shí)現(xiàn)目的。使研磨的樣品具有更加充分、更均勻、樣品重復(fù)性更好、樣品之間沒(méi)有交叉污染
產(chǎn)品特點(diǎn):
1.操作數(shù)量多,高效快速效果好抽提的蛋白比活更高,核酸片斷更長(zhǎng)。
2.無(wú)交叉污染,操作簡(jiǎn)便,重復(fù)性好
3.穩(wěn)定性好噪音小于55dB,不會(huì)對(duì)其它實(shí)驗(yàn)或儀器產(chǎn)生干擾。
4.方便低溫操作
實(shí)驗(yàn)步驟:
1.準(zhǔn)備好若干ml聚乙烯研磨罐,配套研磨珠。
2.把準(zhǔn)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(shè)置參數(shù),程序結(jié)束后即可破碎。
5.完成后做后續(xù)實(shí)驗(yàn)。
6.進(jìn)行分析再做再生實(shí)驗(yàn)。
實(shí)驗(yàn)結(jié)果:
注意事項(xiàng):
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(gè)研磨罐研磨樣品量一般遵循原則:樣品體積不超過(guò)離心管容積的三分之一。
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