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Merck

A7002

Sigma-Aldrich

琼脂

ash 2.0-4.5%

别名:

琼脂-琼脂, 胶琼脂

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100 G
$121.00
250 G
$165.00
500 G
$326.00
1 KG
$447.00
5 KG
$1,800.00

About This Item

线性分子式:
(C12H18O9)n
CAS号:
EC 号:
MDL编号:
UNSPSC代码:
50405901
eCl@ss:
42040102
NACRES:
NB.22

$121.00


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生物来源

algae (Rhodophyceae)

质量水平

表单

flakes
powder or crystals

技术

tissue culture: suitable

灰分

2.0-4.5%

凝胶强度

600-1200 g/cm2 (1.5%, 20 oC)

SMILES字符串

O1[C@@H]([C@@H]([C@@H]([C@H](C1OC2[C@H]3OCC2OC([C@H]3O)C)O)OC)O)CO

InChI

1S/C14H24O9/c1-5-8(16)13-11(7(21-5)4-20-13)23-14-10(18)12(19-2)9(17)6(3-15)22-14/h5-18H,3-4H2,1-2H3/t5?,6-,7?,8-,9+,10-,11?,12+,13+,14?/m1/s1

InChI key

GYYDPBCUIJTIBM-DYOGSRDZSA-N

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一般描述

琼脂是由β- D-吡喃半乳糖基和3,6-脱水-α-L-吡喃半乳糖基单元组成的多糖。根据不同的来源,琼脂以甲基和硫酸醚等各种取代形式存在。[1]它是从类红藻藻类的细胞壁中分离出来的线性半乳聚糖。[2]

应用

琼脂已用于:
  • 用作固体N6完全培养基组分[3]
  • 改良Murashige和Skoog (MS)培养基,用于培养发芽的扁豆和蚕豆种子[4]转基因花椰菜和西兰花外植体再生[5]
  • 用作琼脂混合物组分,以模拟颈动脉中的血管体模[6]

生化/生理作用

琼脂以左旋构象存在,六角形纤维聚集导致形成凝胶。二糖的疏水性决定了其胶凝特性和溶解性。[7]琼脂是微生物固体培养基的主要成分。它在组织工程、制药和细胞封装中均有应用。[8]

储存分类代码

11 - Combustible Solids

WGK

WGK 1

个人防护装备

Eyeshields, Gloves, type N95 (US)


历史批次信息供参考:

分析证书(COA)

Lot/Batch Number

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Questions

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  1. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 answer
    1. Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf

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  2. How can I determine the shelf life / expiration / retest date of this product?

    1 answer
    1. If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
      For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
      For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
      For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/449/386/product-dating-information-mk.pdf

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