紫外可见光分光光度法测定莽吉柿胶囊中总双苯吡酮的含量

建立一种测定莽吉柿胶囊中总双苯吡酮含量的方法。以α-倒捻子素为标准品,以NaNO2-Al(NO3)3-NaOH为显色系统,采用紫外可见光分光光度法在370nm测量波长测定莽吉柿胶囊中总双苯吡酮的含量。紫外可见光分光光度法符合精密度、准确度、线性(r=0.999)的基本要求,加样回收率为100.38%,RSD为2.49%。该方法简便、准确、灵敏度高、重现性好,可用于莽吉柿胶囊中总双苯吡酮的含量测定。     

RP—HPLC—UVD法测定莽吉柿胶囊中alpha—mangostin的含量

建立一种测定莽吉柿胶囊中α-倒捻子素（alpha—mangostin）含量的方法。采用反相高效液相色谱-紫外检测法测定。色谱条件：Diamonsil^TM C18色谱柱（250mm×4．6mm,5μm）,流动相为甲醇-水（83：17）,流速为1．0mL／min,柱温：25℃,紫外检测波长：317nm。在选定的色谱条件下,反相高效液相色谱-紫外检测法符合精密度、准确度、线性（r=0．9995）的基本要求,加样回收率为100．9％,RSD为1．82％。该方法简便、准确、灵敏度高、重现性好,可用于莽吉柿胶囊中alpha—mangostin的含量测定。     

活性乳酸菌微胶囊制备工艺的优化

为提高被摄入人体的活性乳酸菌的活菌数,以微胶囊的形式对活性乳酸菌进行包埋,以多孔淀粉为内芯材,选取海藻酸钠、糊精、明胶为外壁材制成微胶囊,利用乳酸菌活菌计数法测定吸附包埋效果。通过正交试验,优选最佳包埋条件为:多孔淀粉5%,海藻酸钠2%,明胶4%,糊精5%,产品活菌数可达7.34×108cfu/g,包埋产率可达86.3%。     

超微细化大米淀粉的理化性质

以大米淀粉为原料,采用球磨法制备微细化大米淀粉,观察了不同球磨时间下大米淀粉物化性质的变化规律。结果表明:将大米淀粉研磨一定时间后,可以得到平均直径小于0.10μm的超微细粉体;机械力作用对淀粉颗粒的粒度、粘性、分子量及其与碘的结合等有影响;随着破碎程度的增大,淀粉的碘兰值、吸湿量、溶解率、胶稠度、透明度和酶解率都有所增大。在球磨前20 h,各指标变化迅速,20 h后趋于平缓。     

金耳糖肽胶囊的基础药理学研究

药理学研究表明,金耳糖肽胶囊能 抗动物 肝损伤、保护肝细胞、降低转氨酶,其作用明显优于对照组（P＜0.05）,还能调节动物细胞生物活性,提高机体的代谢水平,增强免疫力,与对照组相比差异显著（P＜0.05）。此外,金耳糖肽可提高动物的应激能力,说明该胶囊主要是通过保护肝细胞,调节或稳定细胞功能活动,提高免疫力和机体的应激能力来防治肝炎等慢性疾病的。     

门源草原毛虫幼虫虫龄的判别

连续两年（１９９０一１９９１年）在实验室和野外对门源草原毛虫（Ｇｙｎａｅｐｈｏｒａｍｅｎｙ－ｕａｎｅｎｓｉｓＹａｎｅｔＣｈｏｕ）１龄至６龄（雄性）或７龄（雌性）幼虫进行了观测，对头壳宽、体长、体宽、体重和趾钩数分别作了测定，统计比较。结果表明：幼虫头壳宽度是用于直接判别幼虫发育期的最有效的参数，并提出根据这一参数估测幼虫虫龄的方法，由头宽Ｘ预测虫龄Ｙ公式为：Ｙ＝０．２９４４＋２．０３１４Ｘ４（ｒ＝０．９８２６）     

牛肾动脉肾脂囊支的起源

牛肾动脉肾脂囊支的起源陈嘉绩，刘建遂（江苏农学院杨州２２５００２）将新鲜牛肾连肾脂囊一起摘出，用２０％Ａ、Ｂ、Ｓ丁酮溶液加油与颜色混匀，由肾动脉注入后，可见有血管从肾皮质部表面的沟中穿出，分布干肾脂囊。５只牛肾（水牛２只、黄牛３只）注射后均可见上述肾...     

Growth characteristics of Staphylococcus aureus and Escherichia coli in whey from sequentially infected milk

The growth of Staphylococcus aureus and Escherichia coli was followed in bovine whey samples which had been prepared from milk previously incubated with cultures of S. aureus or E. coli. Staphylococcal strains were divided into 2 groups according to their ability to form compact or diffuse colonies on serum soft agar, which is related to the absence or presence of capsule respectively. The growth of compact staphylococci was dependent on the bulk tank milk used whereas diffuse colony forming staphylococci grew equally well in all bulk milk, also in all inoculated milk. The growth of E. coli was markedly enhanced in whey samples prepared from milk preincubated with staphylococci. However, clear growth inhibition was seen with E. coli and S. aureus strains when grown in whey prepared from milk preincubated with E. coli. Results indicate that the growth promotion of pathogens due to compositional changes in milk are of importance during the course of infection because the growth pattern on staphylococci is dependent on these compositional changes. The growth-inhibitory effects caused by E. coli may explain difficulties in isolating this organism.     

Intraocular sarcoma associated with lens capsule rupture and persistent hyperplastic primary vitreous in a dog

This case report describes the clinical findings and ocular pathology in an adult Golden Retriever diagnosed with an intraocular sarcoma. Nineteen s prior to diagnosis with a lens capsule rupture and intraocular sarcoma, the dog was diagnosed with persistent hyperplastic primary vitreous and uveitis based on clinical signs and the ultrasonographic appearance of the eye. Two years after enucleation, there was no evidence of metastatic spread of the sarcoma. The immunohistochemical characteristics of the tumor as well as the limitations and supportive evidence used in attempting to identify the histogenesis of the tumor are outlined.