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Merck
CN

05040

琼脂

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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产品名称

琼脂, powder, suitable for microbiology

InChI key

GYYDPBCUIJTIBM-DYOGSRDZSA-N

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

sterility

non-sterile

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

Quality Level

100

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相关类别

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。

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。

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
BCCN4492
BCCL6478
BCCM3490
BCCM5855
BCCK7898

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Base Ingredients of Microbiology Media

Culture media provides a habitat with suitable nutrients, energy sources, and certain environmental conditions for the growth of microorganisms. The components of the culture media range from simple sugars to peptones, salts, antibiotics, and complex indicators.

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