芦荟苷

The results showed: the three trace elements all have significant effect on the content of aloin and aloe-emodin.

结果表明：三种微量元素对芦荟体内芦荟苷、芦荟大黄素含量皆有影响。

The extraction methods of aloin and aloe-emodin in Aloe barbadensis was explored by contrast experimentation.

通过对比试验探讨了对芦荟中芦荟苷、芦荟大黄素的提取方法。

Objective To determinate the content of aloin in aloe products with different technological processes and observe the purgative effect of these aloe products on constipated mice.

摘 要：目的测定不同工艺生产的芦荟制品中芦荟苷的含量，观察芦荟制品对便秘小鼠排便功能的影响。

The effects of Mn(superscript 2+) concentration on the root activity and the content of aloin and aloe-emodin in Aloe barbadensis Mill. were studied.

［目的］研究Mn(上标 2+)浓度对库拉索芦荟根活力及体内芦荟苷、芦荟大黄素含量的影响。

Aloin is unstable when dissolved in methanol, acetyl acetate was appropriate for use as the solvent in standard solution.

芦荟苷在甲醇溶剂中不稳定，甲醇不适宜做芦荟苷标准样的溶剂，宜改用乙酸乙酯。

Result The results showed that the trace element Manganese had significant effect on the root activity and the content of aloin and aloe-emodin.

结果］Mn(上标 2+)对芦荟根活力以及芦荟体内芦荟苷、芦荟大黄素含量均有影响。

The effect of three trace elements on the content of aloin and aloe-emodin in Aloe barbadensis was studied by sandy culture experiment.

本研究采用砂培试验初步探讨了锰、铁、锌三种微量元素对库拉索芦荟中芦荟苷、芦荟大黄素含量的影响。

When the concentration of Mn(superscript 2+) in the nutrient solution was 1.0×10^(-5) mol/L, the root activity and the content of aloin and aloe-emodin were the highest. The content of Mn(superscript 2+) in the Aloe barbadensis Mill. increased as the concentration of Mn(superscript 2+) supplied improved.

当营养液中Mn(上标 2+)浓度为1.0×10^(-5) mol/L时，芦荟根活力最高，芦荟苷和芦荟大黄素含量也最高；随着供Mn(上标 2+)浓度的提高，芦荟体内Mn(上标 2+)含量不断增加。

A method for the determination of aloin and aloe-emodim in aloe vera was established based on multi-wavelength linear regression spectrophotometry in wavelength range of 350-450nm with a regression equation.

依据芦荟苷与芦荟大黄素的光谱特征，选择350-450nm为测定波长范围，用多波长直线回归分光光度法同时测定芦荟中芦荟苷和芦荟大黄素含量。

The stability of aloin decreased with the increase of temperature and heating time. However, the absorbency of aloin did not change with time under room temperature (20℃). The aloin was sensitive to light, and the aloe juice showed a yellowish green sediment in 2 hours after exposed to sunlight. The stability of aloin declined when the pH value arose. The aloe juice was more stable under lower concentration of sodium chloride and sucrose.

结果表明：加热的温度越高，时间越长，芦荟苷的热稳定性越差，而在室温下(20℃)芦荟苷的吸光度基本不随时间改变；芦荟苷具有光敏性，在太阳光照射下，2小时后便出现黄绿色沉淀物；芦荟溶液随着pH的升高，其稳定性下降；低浓度的氯化钠和蔗糖对芦荟汁液稳定性的维持比高浓度的效果明显。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。