D-Galacturonic acid

D-Galacturonic acid

1

Qualitative chemical reaction and UV analysis indicated that EAP-2 is an acid polysaccharide with 2.3 % D-galacturonic acid and without any protein , nuclear acid and starch .

对糖含量较高的精多糖EAP-2进行定性化学反应和紫外光谱鉴定表明，EAP-2不含蛋白质、核酸和淀粉，D-半乳糖醛酸的含量为2.3%。
2

After precipitated by 95 % ethanol , the quality of pectin was determined and was as follows : degree of gelation 152 °, D-galacturonic acid content 76.3 % and ash content only 2.75 % .

提取液经浓缩后采用95%乙醇沉淀，所得果胶胶凝度为152°，半乳糖醛酸含量为76.3%，而灰分仅为2.75%。