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生物源
oranges
品質等級
化驗
≥85% (titration)
形狀
powder
顏色
white to brown
mp
60 °C
溶解度
aqueous NaOH: 1%, clear to hazy
儲存溫度
room temp
SMILES 字串
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 密鑰
AEMOLEFTQBMNLQ-BKBMJHBISA-N
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一般說明
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。
應用
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。
儲存類別代碼
11 - Combustible Solids
水污染物質分類（WGK）
WGK 3
閃點（°F）
Not applicable
閃點（°C）
Not applicable
個人防護裝備
Eyeshields, Gloves, type N95 (US)
其他客户在看
Kun Cheng et al.
Drug development and industrial pharmacy, 30(4), 359-367 (2004-05-11)
Insulin-loaded calcium pectinate nanoparticles were prepared as a potential colonic delivery system by ionotropic gelation with calcium ions. The effects of pectin molecular weight (Mv) and formulation pH on the characteristics of the nanoparticles were evaluated. Commercial pectins, LM101 and
Marianne Hiorth et al.
International journal of pharmaceutics, 308(1-2), 25-32 (2005-12-06)
This study has investigated the potential of immersion coating calcium containing pellet cores first with pectin, and then with two different cross-linkers, calcium or chitosan. The interaction between pectin and calcium, and between pectin and chitosan, are believed to slow
Pectin acetylesterases from Aspergillus are able to deacetylate homogalacturonan as well as rhamnogalacturonan
Bonnin E, et al.
Carbohydrate Polymers, 74(3), 411-418 (2008)
Pectin acetylesterases from Aspergillus are able to deacetylate homogalacturonan as well as rhamnogalacturonan
E. Bonnin.
Carbohydrate Polymers, 74, 411-418 (2008)
Immunocytochemistry of pectins in shoot apical meristems: consequences for intercellular adhesion
Sobry S, et al.
Protoplasma, 225(1-2), 15-22 (2005)
实验方案
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。
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.
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