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05040

琼脂

Name: 琼脂
Brand: SIAL

powder, suitable for microbiology

别名:

琼脂-琼脂, 胶琼脂

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关于此项目

线性分子式:

(C₁₂H₁₈O₉)_n

化学文摘社编号:

9002-18-0

eCl@ss:

42040102

UNSPSC Code:

41106212

NACRES:

NA.74

EC Number:

232-658-1

MDL number:

MFCD00081288

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属性

sterility

non-sterile

Quality Level

100

form

powder

shelf life

limited shelf life, expiry date on the label

packaging

pkg of 1 kg, pkg of 100 g, pkg of 250 g

storage condition

(Tightly closed)

ign. residue

≤6%

loss

≤20% loss on drying

pH

5-8 (50 °C, 1.5% in H₂O, 100 °C/15 min.)

transition temp

gel point ~35 °C (1.5% solution)

gel strength

>300 g/cm² (1.5% gel)

solubility

H₂O: 1.5% at 70 °C, clear to slightly hazy (100 °C/15 min.)

application(s)

agriculture, microbiology

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

说明

General description

琼脂作为微生物培养基的固化剂被广泛应用于微生物学。它是从海藻中提取的多糖，主要由琼脂糖组成。琼脂基本上是一种惰性物质，这使它成为微生物培养基的理想材料，因为它不会干扰微生物的生长。琼脂可以固化培养基，使微生物在固体环境中生长，促进不同菌落的形成，并可以选择性地分离特定的微生物。它还用于制备选择性和差别化培养基，这些培养基可以提供额外的营养物质或其他化学物质，以选择性地促进或抑制特定微生物的生长。琼脂通过高压灭菌灭菌，然后倒入培养皿冷却和固化，形成微生物生长的表面。

Application

琼脂通常用作许多微生物培养基的固化剂，用于各种制药、环境、食品和饮料样品中的细菌、酵母和霉菌的生长和鉴定。

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存储类别

11 - Combustible Solids

wgk

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

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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