查询词典 sitosterol

In the white part of birch bark there are other medical substances: betulinic acid, b - sitosterol, flavonoids, lupeleol and other.

在白桦树皮还有部分医疗药物：桦木酸、乙-谷甾醇、黄酮类、lupeleol等。

After chemistry and ~1H-NMR,~(13)C-NMR、GC-MR、UV, IR Spectral analysis instrument synthesis appraisal compoundⅠ,Ⅱ,ⅢRespectively isβ-Sitosterol, oleanolic acid , ursolic acid; compoundⅣ,The structure is being appraised. CompoundⅠand compoundⅢare discovered for the first time from Radix Rosa davurica pall. Through pharmacognosy research and the chemical composition carries on the system to the root of Rosa davurica pall.

经化学及~1H-NMR、~(13)C-NMR、GC-MR、UV、IR等光谱分析仪器综合鉴定化合物Ⅰ、Ⅱ、Ⅲ分别为β-谷甾醇、齐墩果酸、熊果酸，其中化合物Ⅰ和化合物Ⅲ为首次从山刺枚根中发现。

Results The main clinical feature of the three affected patients was hemolysis, macrothrombocytes increased plasma sitosterol, stigmasterol and cholestanol levels but normal cholesterol levels.

结果3例患者临床主要表现为溶血和巨大血小板，其血浆谷固醇、豆固醇和二氢胆固醇浓度明显增高而总胆固醇浓度正常。

Keywords infrared spectrophotometry;stigmasterol acetate;β sitosterol acetate;quantitative analysis

红外分光光度法；豆甾醇乙酯；β-谷甾醇乙酯；定量分析

The concentrations of P-sitosterol, campesterol, stigmasterol, p-sitostanol, and campestanol in 150 samples were analyzed by GC methods, moreover, the total contents and the relative contents were calculated.

研究结果利用优化的前处理方法和GC分析条件，各甾醇的分离效果好，且杂峰少；植物油中菜油甾醇、豆甾醇、β-谷甾醇的回收率分别为100.4％、93.3％、103.3％。

Phytosterols are a group of components naturally occurring in all plants and are structurally similar to cholesterol. Until now, numerous unique phytosterols have been identified, p-sitosterol, campesterol, and stigmasterol account for the largest proportion in most sources, and the saturated phytosterol are called "phytostanol", such as sitostanol and campestanol.

植物甾醇是存在于植物中的一大类化学物质的总称，其结构与胆固醇相似，几乎存在于所有的植物性食物中，最常见的包括β-谷甾醇、菜油甾醇、豆甾醇，其次是植物甾醇的饱和形式，即β-谷甾烷醇和菜油甾烷醇等。

Result: Seven compounds were obtained and they are identified as luteolin, 5,7,4′-trihydroxy-3′-methoxy flavone, luteolin-7-O-β-D-glucoside, apigenin,β-sitosterol, stigmasterol, ursolic acid.

结果：从乙醇提取物中分离并鉴定了7个化合物，分别为：5 ，7，3′，4′-四羟基黄酮，5 ，7，4′-三羟基- 3′-甲氧基黄酮，5 ，3′，4′-三羟基黄酮- 7- O-β- D-葡萄糖苷，5 ，7，4′-三羟基黄酮，β-谷甾醇，豆甾醇和熊果酸。

Results Eleven compounds were purified and their structures were identified, they were identified as β-sitosterol, stigmasterol, nonacosanyl caffeate, daucosterol, betulinic acid, vanillic acid, inositol methyl ether, sucrose, soyasaponin Ⅰ, kaikasaponin Ⅲ, and dehy-drosoyasaponin Ⅰ.

结果 分得11个已知化合物，经鉴定为β-谷甾醇、豆甾醇、咖啡酸二十九醇酯、胡萝卜苷、白桦酸、香草酸、肌醇甲醚、蔗糖、soyasaponin Ⅰ、kaikasaponin Ⅲ和dehy-drosoyasaponin Ⅰ。

The main sterol in the rice bran oil deodorizer distillate was stigmasterol, campesterol and sitosterol, but the total sterol content was only 0.32%. In addition, the deodorizer distillate contained a trace of germanical sterol, lanosterol, stigmastan-3, 5-diene etc.

通过对米糠油脱臭馏出物不皂化物的分析检测可知，米糠油脱臭馏出物中主要备醇的种类为豆苗醇、菜油苗醇、谷苗醇，总甾醇含量很少，仅为0.32%；除此之外，还有少量日耳曼苗醇、羊毛甾醇、3，5-二烯豆苗烷等。

Result:Eight compounds were elucidated as β amyrin palmitate, taraxastery acetate, luteolin 7 O α L rhamanopyranosyl (1→2)β D glucopyranoside,luteolin 7 O β D glucopyranoside, triacontanic acid,β sitosterol, stigmasterol and stigmast 7 en 3β ol.

结果 ：从全草中分离得到 5个化合物，β香树脂醇棕榈酸酯，蒲公英醇乙酸酯，木樨草素 7 O α L 鼠李糖基(1→ 2 )β D 葡萄糖苷，木樨草素 7 O β D 葡萄糖苷，三十碳酸；1个混合物，β谷甾醇、豆甾醇、豆甾 7 烯 3β醇。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐