P3889
聚半乳糖醛酸
≥85% (titration), from oranges
生物来源
oranges
质量水平
方案
≥85% (titration)
表单
powder
颜色
white to brown
mp
60 °C
溶解性
aqueous NaOH: 1%, clear to hazy
储存温度
room temp
SMILES字符串
O1[C@@H]([C@@H]([C@H]([C@H]([C@H]1C(=O)O)O)O)O)O
InChI
1S/C6H10O7/c7-1-2(8)4(5(10)11)13-6(12)3(1)9/h1-4,6-9,12H,(H,10,11)/t1-,2+,3+,4-,6-/m0/s1
InChI key
AEMOLEFTQBMNLQ-BKBMJHBISA-N
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一般描述
聚半乳糖醛酸由半乳糖醛酸单元组成，有一种很长的聚合物链。聚半乳糖醛酸的甲酯形成果胶质。
应用
聚半乳糖醛酸可螯合金属离子。 它还可在Ca2+存在下产生凝胶，从而用于药物释放或在生物分子生产中固定细胞或酶。
聚半乳糖醛酸已被用于：
- 2F4 初级抗体溶液的预吸附
- 作为测定聚半乳糖醛酸酶活性的底物
- 制备寡半乳糖醛酸盐混合物，其可用作测定不同乙酰酯酶特异性的底物。
生化/生理作用
在陆生植物中，聚半乳糖醛酸是细胞壁多糖（果胶）的主要成分。与多聚半乳糖醛酸酶抑制肽（PGIP）结合可保护果胶免于被真菌多聚半乳糖醛酸酶降解。
储存分类代码
11 - Combustible Solids
WGK
WGK 3
闪点(°F)
Not applicable
闪点(°C)
Not applicable
个人防护装备
Eyeshields, Gloves, type N95 (US)
法规信息
植物油/植物胶产品
此项目有
Bacterial Wilt Disease: Molecular and Ecological Aspects, 171-171 (1998)
Zhangyong Dong et al.
BMC biochemistry, 12, 51-51 (2011-09-17)
Fusarium wilt is an economically devastating disease that affects banana production. Although Cavendish banana cultivars are resistant to Fusarium oxysporum f.sp. cubense race 1 (FOC1) and maitain banana production after Gros Michel was destructed by race 1, a new race
Biotechnology for Livestock Production, 246-246 (1989)
Mouyong Zou et al.
PloS one, 8(11), e79357-e79357 (2013-11-16)
An alkaline polygalacturonate lyase (PGL) from Bacillus subtilis 7-3-3, PelC, with diverse depolymerization abilities for different pectin substrates was found. The PGL activity of PelC decreased with increasing degree of methyl esterification of the substrate. PelA and PelC displayed notable
L Kurillová et al.
Journal of microencapsulation, 17(3), 279-296 (2000-05-20)
The structure of standard and stabilized calcium pectate gel (CPG) beads has been examined by scanning (SEM) and transmission (TEM) electron microscopy. A two-stage crosslinking procedure with polyethyleneimine (PEI) and glutaraldehyde (GA) led to the formation of a more compact
实验方案
To measure pectinase activity, a titrimetric stop reaction assay is used. One unit of pectinase will liberate 1 μmol of galacturonic acid from poly-galacturonic acid per hour at pH 4.0 at 25 °C.
在测定果胶酶活性时，使用了一种滴定终止反应法进行测定。在25 °C、pH 4.0条件下，一个单位的果胶酶每小时可从多聚半乳糖醛酸释放1 μmol 的半乳糖醛酸。
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