凹凸棒泡腾消毒片制备工艺研究

【目的】制备凹凸棒泡腾消毒片并对其工艺条件进行优化,为提高农村窖水的净化效率提供参考。【方法】采用正交试验方法,以pH值、崩解时限、漂浮时间作为评价指标,对凹凸棒泡腾消毒片中柠檬酸与碳酸氢钠的质量配比、酸碱总量(质量分数)和聚乙二醇6000的用法进行优化;并对最佳工艺条件下制备的消毒片的品质进行了考察,对其水质净化效果进行了检测。【结果】确定的泡腾消毒片的制备工艺为:柠檬酸和碳酸氢钠最佳质量配比为0.6∶1,柠檬酸和碳酸氢钠总量为30%,采用5%聚乙二醇包裹碳酸氢钠;并以此工艺制成泡腾消毒片,经检测,其pH为6.16,崩解时限和漂浮时间分别为(130±3.8)和(315±3.5)s,室温下放置0和30d时的平均径向硬度分别为60和58N,最大发泡量为(7.0±0.5)mL;稳定性试验结果显示,在室温下放置0～360d,泡腾消毒片的各项指标均无显著差异;对取自甘肃省会宁县"母亲水窖"的窖水进行净化,结果显示,pH由8.40降低为7.10,色度、浑浊度分别由14.6度和11.2度降低为11.2度和8.2度,总硬度由390mg/L降为372mg/L,细菌总数由1.23×105 L-1降至9.1×104 L-1,大肠菌群、粪大肠菌群数分别由15和10L-1降为未检出。【结论】得到了凹凸棒泡腾消毒片的最佳制备工艺,且该工艺稳定、可靠;在此工艺下制得的消毒片对窖水水质有较好的净化效果。     

5%调环酸钙泡腾片在水稻生产上的应用试验

通过田间试验,探索植物生长调节剂5%调环酸钙泡腾片在水稻生产上的应用效果,对水稻关键生育期、株高、节间长度、抗倒伏性以及产量等因素进行分析,结果表明,在水稻拔节前10 d喷施5%调环酸钙泡腾片,能够有效降低株高,缩短基部节间长度,减少倒伏发生面积,增加穗数及千粒重,进而达到增产效果,其适宜剂量12～30 g/667 m2。     

Study of the physical properties of kafirin during the fabrication of tablets for pharmaceutical applications

Kafirin and protein bodies were extracted from a condensed tannin-free white Sudanese cultivar of sorghum (Dabar). The extracted materials were characterized by SDS-PAGE. The potential of kafirin as a tablet matrix for pharmaceutical applications was studied. Tablets composed of kafirin, calcium hydrogen orthophosphate, caffeine and magnesium stearate were prepared by direct compression. The tablets showed appropriate levels of hardness and friability. Drug release studies showed that caffeine dissolution was greater in 0.1 M HCl than in either phosphate buffer (pH = 6.8) or distilled water. Deamidation of the protein in acid conditions might explain this observation.FTIR analysis showed that the secondary structure of kafirin was found to be mainly governed by α helices with some β sheets. Upon tabletting, there was a change in protein conformation, which was recovered upon dissolution irrespective of the dissolution media. This might be explained by the loss of protein coil to coil interaction during tabletting (possibly due to the diluting effect of calcium hydrogen orthophosphate). This was later recovered when tablets were dissolved due to the hydrophobic interactions between the kafirin proteins.In summary, this work has shown that kafirin has a potential for use as a tablet for drug delivery.     

园林植物景观与匾额楹联

自滥觞时期开始,植物和园林就密不可分,植物即可以营构优美的环境,又可以寄寓丰富的文化信息。在中国传统园林中,景题是普遍使用的点景手法,其中,匾额、楹联则是造园设计赖以传神的点睛之笔,除了能升华植物景观之外,还可寓情寄意,托物言志,将人们的园林美学和人生哲学与植物景观融为一体,深化人们对植物景观艺术境界的想象。通过对传统园林植物景观与匾额楹联之间关系的探讨,会给我们现代园林植物配置与景题设计带来不一样的启示。     

基于网络药理学和HPLC法建立宠物用复方石淋通片中多指标成分的质量控制方法

建立宠物用复方石淋通片多指标成分含量测定方法。利用网络药理学方法筛选复方石淋通片治疗尿石症、膀胱炎的关键活性成分,结合相关文献及《中国药典》相关要求,确定指标性成分。利用HPLC分析方法,使用CAPCELL PAK C18 MG (S-5) 4.6×250mm色谱柱,柱温30℃,进样量10μL,流速为1.0mL·min-1,检测波长335nm,以乙腈-0.1%甲酸水为流动相,梯度洗脱,建立指标性成分含量测定的方法。通过网络药理学筛选出槲皮素、咖啡酸、绿原酸等十个关键成分。结合《中国药典》及相关文献选出新绿原酸、绿原酸、隐绿原酸、咖啡酸、夏佛塔苷、异夏佛塔苷六种指标性成分。含量测定方法学结果表明：各成分线性关系良好（r≥0.999）;精密度良好,RSD为0.03%~0.21%;重复性良好,RSD为0.70%~2.02%;供试品在24h内稳定性良好,RSD为0.30~2.02%;平均加样回收率（RSD）在98.31%~104.31%（0.36%~2.28%）;三批样品中六种成分的含量分别在0.990~1.434mg·g-1、1.533~2.083mg·g-1、1.311~2.023mg·g-1、0.332~0.353mg·g-1、1.594~1.768mg·g-1、0.787~1.057mg·g-1之间。该含量测定方法有较好的重复性和稳定性,可用于宠物用复方石淋通片的质量分析。     

HPLC法测定复方磺胺对甲氧嘧啶片中磺胺对甲氧嘧啶的含量

建立了兽药复方磺胺对甲氧嘧啶片中磺胺对甲氧嘧啶的高效液相色谱测定法,以C₁₈为固定相,0.1%磷酸溶液－乙腈(80：20)为流动相,流速为1.0ml/min,柱温40℃,检测波长为270nm。磺胺对甲氧嘧啶的线性范围为5.0－100μg/mL,回归方程为Area=33.5583726*Amt－12.147672(n=5),相关系数为0.99997。     

HPLC法检测片剂中葡萄糖酸亚铁的含量

[目的]建立测定保健食品片剂中葡萄糖酸亚铁含量的高效液相色谱法。[方法]色谱条件为:Agilent ZORBAX SB-C18柱(4.6×150 mm,5μm);以乙腈-离子对溶液(500 ml纯化水中加四丁基氢氧化铵10 ml,用磷酸调pH至7.6)30∶70(V/V)作为流动相;流速为1ml/min;进样量20μl,检测器在波长210 nm处进行检测。[结果]试验表明,该方法标准曲线良好,线性范围为62.5～625.0μg/ml,回归方程为Y=0.009 2X-0.116 6,R2=0.999(n=6)。出峰时间为1.547 min,平均回收率为96.68%,RSD为1.5%(n=6)。[结论]该方法操作简单,样品前处理简便,结果稳定、精确,可用于保健食品片剂中葡萄糖酸亚铁含量的测定。     

“二氧化氯泡腾片”对家禽主要病原微生物杀灭效果试验

为了观察“二氧化氯泡腾片”对大肠杆菌、金黄色葡萄球菌、禽流感H9亚型病毒及鸡新城疫病毒的杀菌及杀病毒效果,采用悬液定量杀菌试验和通过固定病毒稀释消毒液法进行实验室观察。结果：二氧化氯5mg／L作用5min即可对大肠杆菌临床分离株产生t00％的杀菌效果。二氧化氯5mg／L作用10min或二氧化氯10mg／L作用5min均能对金黄色葡萄球菌临床分离株产生100％的杀菌效果。2mg／L二氧化氯就能对10砸ID50新城疫病毒有100％的杀灭作用,而1mg／L不能全部杀灭新城疫病毒。禽流感病毒H9亚型对二氧化氯比新城疫病毒敏感,1mg／L二氧化氯即可对10^3EID50禽流感病毒H9有较好的杀灭作用。结论：“二氧化氯泡腾片”是一种方便、高效的消毒剂,在较低的浓度条件下,就能对家禽主要病原微生物有杀灭效果。     

Micropropagation of an endangered Indian sandalwood (Santalum album L.)

Santalum album is known as East Indian sandalwood. It is the most economically important tree harvested for heartwood oil, and India is among the chief exporters of sandalwood and its products. Multiple shoots were induced from nodal shoot segments derived from a 50- to 60-year-old candidate plus tree (CPT) on Murashige and Skoog (MS) medium supplemented with 0.53 μM α-naphthaleneacetic acid (NAA) and 11.09 μM 6-benzylaminopurine (BA). In vitro differentiated shoots were multiplied on MS medium with 0.53 μM NAA, 4.44 μM BA, and additives: 283.93 μM ascorbic acid, 118.10 μM citric acid, 104.04 μM cystine, 342.24 μM glutamine, and 10% (v/v) coconut milk. New shoots were harvested repeatedly for up to three subculture passages on fresh medium at 4-week intervals. Microshoots treated with 98.4 μM indole-3-butyric acid (IBA) for 48 h produced roots on growth-regulator-free, quarter-strength MS basal salts medium with vitamin B₅ and 2% sucrose. In vitro root induction was achieved from microshoots pulsed with 1230 μM IBA for 30 min in soilrite rooting medium. The percentage of rooting in soilrite was higher than that for agar medium, and in vitro raised plants were established in the field and showed normal growth.     

HPLC测定可达灵片中脱氢延胡索碱含量

目的建立高效液相色谱法测定可达灵片中脱氢延胡索碱含量的方法 。方法采用Aglient 1200高效液相色谱仪;Diamonsil C18柱(250 mm×4.6 mm,5μm);流动相为0.05 mol/L磷酸盐溶液-乙腈(68∶32),流速为1.0 ml/min;检测波长为340 nm。结果脱氢延胡索碱在0.1～1μg进样量内与峰面 积呈良好线性关系(r=0.999 7),平均回收率为99.3%,RSD为1.0%。结论本方法 简便、可靠、重复性好,可用于可达灵片的质量控制。