形式
solid
质量水平
保质期
limited shelf life, expiry date on the label
包装
pkg of 100 g
pkg of 5 kg
pH值（酸碱度）
6.5-7.0 (20 °C, 100 g/L in H2O)
mp
158-160 °C
应用
microbiology
pharmaceutical
储存温度
15-25°C
适用性
Citrobacter spp.
Enterobacter spp.
Escherichia coli
Klebsiella spp.
Salmonella spp.
Streptococcus spp.
InChI
1S/C5H10O5/c6-1-3(8)5(10)4(9)2-7/h1,3-5,7-10H,2H2
InChI key
PYMYPHUHKUWMLA-UHFFFAOYSA-N
一般描述
L(+)-Arabinose, an aldopentose monosaccharide, is an isomer of D-galactose, commonly used as a substrate in bacterial growth media for the growth of arabinose-utilizing bacteria. It enters the bacterial cell through the phosphoenolpyruvate-dependent phosphotransferase system.
Microorganisms can only ferment specific carbohydrates, depending on the enzymes they possess to break down carbohydrates. Fermentation can be detected by gas production (CO2) in liquid media and/or color change of pH caused by acid production. L(+)-Arabinose is added to any sugar-free basal media to test the ability of the organism to hydrolyze arabinose as the sole source of carbon and energy during fermentation. Arabinose is typically fermented under acid and gas production by many Enterobacter and coliform bacteria.
Microorganisms can only ferment specific carbohydrates, depending on the enzymes they possess to break down carbohydrates. Fermentation can be detected by gas production (CO2) in liquid media and/or color change of pH caused by acid production. L(+)-Arabinose is added to any sugar-free basal media to test the ability of the organism to hydrolyze arabinose as the sole source of carbon and energy during fermentation. Arabinose is typically fermented under acid and gas production by many Enterobacter and coliform bacteria.
应用
L(+)-Arabinose is recommended to detect arabinose fermenting bacteria in food and environmental samples. They find their application in various sectors such as the food and dairy industry, water industry, pharmaceutical laboratory testing, cosmetic industry, environmental and sanitary testing, clinical diagnostic, etc.
分析说明
Identity (IR-spectrum): conforms
Spec. rotation [α²0/D (100 g/l, water): +103.0 - +105.0 °
Heavy metals (as Pb): ≤ 0.001 %
TLC-Test: conforms
Water: ≤ 0.5 %
Suitability for microbiology: conforms
Total aerobic microbial count (TAMC): ≤ 1000 CFU/g
Total combined yeasts/moulds count (TYMC): ≤ 100 CFU/g
Spec. rotation [α²0/D (100 g/l, water): +103.0 - +105.0 °
Heavy metals (as Pb): ≤ 0.001 %
TLC-Test: conforms
Water: ≤ 0.5 %
Suitability for microbiology: conforms
Total aerobic microbial count (TAMC): ≤ 1000 CFU/g
Total combined yeasts/moulds count (TYMC): ≤ 100 CFU/g
储存分类代码
11 - Combustible Solids
WGK
WGK 3
法规信息
新产品
Dominik Mojzita et al.
The Journal of biological chemistry, 285(31), 23622-23628 (2010-06-01)
The first enzyme in the pathway for l-arabinose catabolism in eukaryotic microorganisms is a reductase, reducing l-arabinose to l-arabitol. The enzymes catalyzing this reduction are in general nonspecific and would also reduce d-xylose to xylitol, the first step in eukaryotic
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