聯系電話:
進口分裝西班牙瓊脂糖
產品名稱:西班牙瓊脂糖(進(jin)口(kou)分裝)
儲藏溫度:RT
商品名很多,常見的有,Sepharose(瑞典(dian),pharmacia ),Bio-Gel-A(美國Bio-Rad)等。瓊(qiong)(qiong)脂(zhi)糖(tang)(tang)凝(ning)膠是依靠糖(tang)(tang)鏈之間的次級鏈如氫(qing)鍵來(lai)維(wei)持網狀結構,網狀結構的疏密依靠瓊(qiong)(qiong)脂(zhi)糖(tang)(tang)的濃度。一般(ban)情(qing)況下,它的結構是穩定的,可以在(zai)許多條件下使用(如水,pH4-9范圍內(nei)的鹽溶液)。瓊(qiong)(qiong)脂(zhi)糖(tang)(tang)凝(ning)膠在(zai)40℃以上開始融化(hua),也不能高(gao)壓消毒,可用化(hua)學滅(mie)菌活(huo)處理。
瓊脂糖(tang) Agarose,縮寫為(wei)AG,是瓊脂中(zhong)不帶(dai)電荷的中(zhong)性組(zu)成(cheng)(cheng)(cheng)成(cheng)(cheng)(cheng)份,也譯為(wei)瓊膠素或瓊膠糖(tang)。瓊膠糖(tang)化學結(jie)構由(you)β-D-吡(bi)喃(nan)半(ban)乳(ru)(ru)糖(tang)(1-4)連接(jie)3,6-脫水α-L-吡(bi)喃(nan)半(ban)乳(ru)(ru)糖(tang)基(ji)單位構成(cheng)(cheng)(cheng).
把瓊脂(zhi)(zhi)糖,即幾乎不(bu)含硫酸根的(de)主要成(cheng)分(fen)(fen)為多糖的(de)瓊脂(zhi)(zhi),溶于(yu)熱水,冷卻(que)制成(cheng)的(de)凝(ning)(ning)膠(jiao)(jiao)。制成(cheng)的(de)小顆(ke)粒用于(yu)凝(ning)(ning)膠(jiao)(jiao)過濾(lv)。適(shi)于(yu)用sephadex不(bu)能分(fen)(fen)級分(fen)(fen)離的(de)大分(fen)(fen)子的(de)凝(ning)(ning)膠(jiao)(jiao)過濾(lv),若使用5%以下濃度的(de)凝(ning)(ning)膠(jiao)(jiao),也能夠分(fen)(fen)級分(fen)(fen)離細胞顆(ke)粒、病毒等。利用其吸附性(xing)小的(de)特點(dian),有時用它代替瓊脂(zhi)(zhi)、以作為免疫電泳(yong)或凝(ning)(ning)膠(jiao)(jiao)內沉(chen)降(jiang)反應(ying)的(de)支持物。
進口分裝西班牙瓊脂糖 慧穎生物:/
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