英语翻译.Under this condition,the dried extract was9.025%,the co

英语翻译
.Under this condition,the dried extract was
9.025%,the content of polysaccharide in the extract was 20.9%,and the yield of
polysaccharide in Ginkgo biloba leaves was 1.887%.
Kraus (1991) isolated water-soluble polysaccharide from Ginkgo biloba leaves,
separated the polysaccharide mixture into a neutral and two acidic polysaccharide
fractions,and analyzed their structural features simply.The method for extracting
polysaccharide was not exactly the same as ours.After removed pigment and thelike with organic solvent,the leaves was then extracted with water for 24 h at 20\2C
(conc.5%,i.e.,water to sample approximately 19:1),and polysaccharide was
deposited with EtOH (final conc.75%,i.e.,a threefold volume).After dialysis the
yield of the high Mr.fraction was 1.1%.A UV/Vis scan was performed to a blank from 400 to 900 nm for determining
hydroxyl radical inhibition and the maximum absorption at 554 nm was obtained
(Fig.1).
The results in Fig.2 were obtained with five polysaccharide concentrations of the
extract,and indicated that the extract may be a powerful hydroxyl radical scavenger.
Indeed the extract was able to give an inhibition of 10.46% at concentration of
polysaccharide as low as 0.836 lg ml-1.At higher concentration,the inhibitory
effect was more marked and reached 64.05% at 4.18 lg ml-1,much better than
vitamin C (Fig.2).This may be better than the extracts containing polysaccharide
from other plants.For example,Herba houttuynia,a traditional Chinese medicine,
Agrocybe cyclindracea and Pleurotus ostreatus,two mushrooms,were able to
inhibit hydroxyl radical (Cheng and Li,2006).The scavenging rate of the
polysaccharide from Herba houttuynia was 15.9% at 2 mg ml-1,from Agrocybe
cyclindracea 9.85% at 120 lg ml-1,and from Pleurotus ostreatus 3.34% at
25 lg ml-1 (Cheng and Li,2006).Shao et al.(2007) had demonstrated that
Sarcandra glabra,a traditional Chinese medicine,could inhibit hydroxyl radical.
The scavenging rate of the polysaccharide from Sarcandra glabra was 60% at
2 mg ml-1.The scavenging activity of the extract from Ginkgo biloba leaves
seemed correlated with the presence of polysaccharide in the extract.

这种情况下是干提取物
9.025%,多糖中提取的内容是 20.9%和产量的
银杏叶中的多糖是 1.887%.
银杏沙伯叶克劳斯 (1991) 隔震水溶性多糖
多糖混合分为一个中性和两个酸性多糖
馏分,和简单地分析他们的结构特征. 提取方法
多糖不完全是我们相同. 已删除的色素后与有机溶剂 thelike 树叶是用水的 24 小时在 20 C 然后节录
(conc.5%,即,水示例约为 19： 1),多糖是
存入 EtOH （最终 conc.75%,即,三重卷）. 透析后,
产量的高先生分数是 1.1%.A 400 至 900 执行到一片空白紫外/度扫描测定纳米
羟根治抑制和在 554 的最大吸收光谱纳米获得
(图 1）.
图 2 中的结果获得的五个多糖浓度,
提取,并表示提取可能是一个强大的羟基根治清除.
其实,提取是能够提供一个抑制 10.46%的浓度
多糖低至 0.836 乐金毫升-1. 在高浓度,抑制
影响更是标记和达到在 4.18 乐金毫升-1,比 64.05 %
维生素 C (图 2). 这可能是比含多糖提取
从其它的植物. 例如,草鱼腥草,传统中医
茶 cyclindracea 和两个蘑,侧耳就能够
抑制羟自由基 （郑和李,2006年）. 清除率,
草鱼腥草多糖是在 2 毫克毫升 1,从茶百分之十五
在 120 乐金毫升-1,和从侧耳 cyclindracea 9.85%在平菇 34%
25 乐金毫升-1 （郑和李,2006年）. 邵 et al (2007),表明了
传统中医药肿可能有碍羟自由基.
肿多糖清除率,在 60 %
2 毫克毫升-1. 清除活性的提取物银杏叶
似乎相关的多糖提取中存在.