CN102526070A - 一种复方联苯苄唑纳米乳喷剂及其制备方法 - Google Patents
一种复方联苯苄唑纳米乳喷剂及其制备方法 Download PDFInfo
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- CN102526070A CN102526070A CN2012100009064A CN201210000906A CN102526070A CN 102526070 A CN102526070 A CN 102526070A CN 2012100009064 A CN2012100009064 A CN 2012100009064A CN 201210000906 A CN201210000906 A CN 201210000906A CN 102526070 A CN102526070 A CN 102526070A
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- Medicinal Preparation (AREA)
Abstract
本发明公开了一种复方联苯苄唑纳米乳喷剂,该纳米乳的粒径为1nm~100nm,由下述质量百分比的原料制成:表面活性剂30%~40%、助表面活性剂3%~14%、油相5%~10%、联苯苄唑0.8%~2%、丙酸氯倍他索0.02%~0.1%、肉桂醛0.01%~0.2%、余量为去离子水,上述原料的质量百分比之和为100%。本发明具有杀真菌、杀细菌、抗细菌、抗真菌、消炎、止痒等多种作用,治疗浅表皮肤真菌感染以及真菌性甲沟炎和念珠性外阴阴道炎,对外耳炎、细菌性皮肤感染也有效。本发明制备的复方纳米乳,显著提高了三种药物的活性,杀菌止痒效果迅速,不易复发,制备简单,在医药领域有广阔的市场前景。
Description
技术领域
本发明属于医药领域,涉及一种外用抗真菌药联苯苄唑的复方配方,以及将该复方制备成一种新剂型的方法,具体地说是一种透明稳定的水包油型复方联苯苄唑纳米乳喷剂及其制备方法。
背景技术
[0002] 联苯苄唑(Bifonazole)为咪唑类抗真菌药,其抗菌机制为双重抑制真菌细胞膜麦角固醇合成,除与其他咪唑类药物一样作用于P450-14a去甲基外,还作用于羟甲基麸氨酸辅酶A还原酶,具有广谱抗真菌作用,对90%的致病真菌有抑制作用。对皮肤真菌(例如毛癣菌属、小孢子菌属)、酵母菌(例如念球菌属、瓶形酵母菌、光滑球拟酵母菌)、霉菌(例如曲霉属)、丝状菌、秕糠状鳞斑霉菌,微小棒状杆菌等有效,适用于浅表皮肤真菌感染,如手足癣、体癣、股癣、花斑癣、皮肤念球菌病等。联苯苄唑现有乳膏剂、栓剂、溶液、凝胶剂等,联苯苄唑化学性质稳定,脂溶性好,在水中几乎不溶。把联苯苄唑制成局部外用剂型,对治疗部位具有针对性,能够提高局部药物的浓度。以往的技术都是将其溶于脂溶性半固体基质,制成乳膏剂;或是分散于凝胶基质中制成凝胶剂,所制备的凝胶剂吸水后不稳定,易析出药物。无论是乳膏剂还是凝胶剂,都存在一个透皮吸收效率不高的问题,导致治疗时间长,治疗效果受到影响。
丙酸氯倍他索(Clobetasol Propionate)是目前临床应用的高效外用皮质类固醇中药效较强的一种,具有抗炎、抗过敏、抗增生、免疫抑制作、抗瘙痒和毛细血管收缩作用,其抗炎作用约为氢化可的松的112.5倍,倍他米松磷酸钠的2.3倍,氟轻松的18.7倍。临床上用于治疗银屑病、湿疹、足部干裂、斑状秃发、神经性皮炎、掌跖脓疱病等皮肤疾病。本品不溶于水,临床上常制成乳膏剂使用,因此透皮吸收效率有限,无疑延长了治疗时间。由于丙酸氯倍他索不宜长期使用,长期用药可能引起皮质功能亢进症,因此大大限制了其在临床上的应用,一种能增加丙酸氯倍他索透皮吸收效率的剂型就显得极为重要。
肉桂醛(Cinnamaldehyde)是一种醛类有机化合物,为黄色黏稠状液体,大量存在于肉桂等植物体内,现代研究发现,肉桂醛对真菌有显著疗效,对22种条件致病性真菌进行肉桂醛抗真菌作用研究表明:肉桂醛是抗真菌的活性物质,主要是通过破坏真菌细胞壁,使药物渗入真菌细胞内,破坏细胞器而起到杀菌作用。对大肠杆菌、枯草杆菌及金黄色葡萄菌、白色葡萄球菌、志贺氏痢疾杆菌、伤寒和副伤寒甲杆菌、肺炎球菌、产气杆菌、变形杆菌、炭疽杆菌、肠炎沙门氏菌,霍乱弧菌等有抑制作用。且对革兰氏阳性菌杀菌效果显著,可用于治疗多种因细菌感染引起的疾病。最小抑制浓度(MIC)为0.02—0.07ul/ml,对深部致病真菌,MIC为0.1—0.3ul/ml。对人体无毒或低毒,而对微生物的繁殖能起到较强的抑制作用,对黄曲霉、黑曲霉、橘青霉、串珠镰刀菌、交链孢霉、白地霉、酵母,均有强烈的抑菌效果。目前鲜有将肉桂醛添加于外用抗真菌感染药物的报道,肉桂醛不溶于水,限制了将其制成外用药物的透皮吸收率。
发明内容
本发明的目的是针对现有技术的问题与缺陷,提供一种溶解性好、透皮吸收效率高、生物利用度高、杀菌抑菌效果好、止痒迅速、物理性质稳定的复方联苯苄唑纳米乳喷剂。
实现上述发明目的的技术方法是一种复方联苯苄唑纳米乳喷剂,由下列组分的原料制成:表面活性剂30%~40%、助表面活性剂3%~14%、油相5%~10%、联苯苄唑0.8%~2%、丙酸氯倍他索0.02%~0.1%、肉桂醛0.01%~0.2%、余量为去离子水,上述原料的质量百分比之和为100%。
制备本发明药物的配方优选质量百分比范围是:表面活性剂30%~36%、助表面活性剂5%~12%、油相6%~9%、联苯苄唑0.8%~1.5%、丙酸氯倍他索0.02%~0.05%、肉桂醛0.03%~0.1%、余量为去离子水,上述原料的质量百分比之和为100%。
制备本发明药物的配方最佳质量百分比是:表面活性剂32%、助表面活性剂9.5%、油相7.42%、联苯苄唑1%、丙酸氯倍他索0.03%、肉桂醛0.05%、余量为去离子水,上述原料的质量百分比之和为100%。
所述的表面活性剂是EL-40、RH-40、吐温-80和泊洛沙姆188中的一种或几种的混合物。
所述的助表面活性剂是无水乙醇、1,2-丙二醇、丙三醇和聚乙二醇-400中的一种或几种的混合物,本发明无助表面活性剂也能形成澄清透明,稳定性好的纳米乳。
所述的油相为乙酸丁酯、肉豆蔻酸异丙酯、杏仁油、小麦胚芽油、三乙酸甘油酯和乙酸乙酯的一种或几种的混合物。
本发明首次将联苯苄唑、丙酸氯倍他索、肉桂醛联合使用治疗真菌感染导致的各种疾病。联苯苄唑具有广谱的抗真菌效果,主要通过抑制真菌细胞膜麦角固醇合成达到抑菌效果;肉桂醛破坏真菌细胞壁,使药物渗入真菌细胞内,破坏细胞器而起到杀菌作用;两者联合使用后,不仅对真菌具有双重杀菌效果,通过破坏细胞壁,使联苯苄唑更容易渗透到细胞质中,成倍的增加了抗菌的效果。真菌感染时常伴有严重的炎症反应,本发明通过添加强效抗炎药丙酸氯倍他索,阻止了严重炎症反应的发生,减轻了患者的痛苦,缩短了疗程。本发明复方药物的治疗效果不仅限于杀真菌和抗炎症,所含有效成分肉桂醛对于常见的并发细菌感染也具有很好的治疗效果,丙酸氯倍他索与肉桂醛兼有止痒的作用,对螨虫的感染也具有一定的疗效。
本发明在采用联苯苄唑、丙酸氯倍他索、肉桂醛的复方的基础上,将这三种有效成分同时制成纳米乳,同时增强了三种药物的透皮吸收率与生物利用度。这并不是将三个单独成分的纳米乳的简单混合,要考虑到整个体系的稳定性、三个成分的最佳配比、所用溶剂的相溶性等问题。经过一系列探索与试验,制备成本发明一种透明、稳定、疗效好的复方联苯苄唑纳米乳喷剂。
本发明还有一个目的是提供上述复方联苯苄唑纳米乳喷剂的制备方法,其特征在于,包括以下步骤:
(1)称取配方比例的表面活性剂、助表面活性剂、油相、联苯苄唑、丙酸氯倍他索、肉桂醛、去离子水,备用;
(2)将表面活性剂与助表面活性剂混匀,然后加入油相,混匀;
(3)加入联苯苄唑,混匀;
(4)加入丙酸氯倍他索,混匀;
(5)加入肉桂醛,混匀;
(6)室温下缓慢加入去离子水,且边加去离子水边搅拌,直至形成澄清透明、无色或微黄色、粘度小且流动性好的液体,即得。
本发明的一种复方联苯苄唑纳米乳喷剂适用于治疗浅表皮肤真菌感染(如:手足癣,体、股癣,花斑癣,皮肤念珠菌病等)以及真菌性甲沟炎和念珠性外阴阴道炎,对外耳炎、细菌性皮肤感染也有效。
用法:外用,涂搽于洗净的患处,早晚各1次,症状消失后应继续用药5~10天,以防复发。
本发明经透射电子显微镜检测,液滴直径分布在1~100 nm之间,外观为黄色或无色透明液体,具有很好的稳定性:
1.经时稳定性
经时稳定性是指纳米乳在室温自然变化条件下贮藏时,外观随时间延长而发生变化的程度。该复方联苯苄唑纳米乳喷剂持久透明,未发现浑浊或沉淀,说明其经时稳定性好。
2.热贮稳定性
将该复方联苯苄唑纳米乳喷剂置于试管,密封,置于37℃恒温水浴箱中储存14天,该液贮存后外观透明。
3.抗冷冻稳定性
将该复方联苯苄唑纳米乳喷剂于-4℃保存一周,取出后恢复至室温。该复方联苯苄唑纳米乳喷剂在-4℃时成固体,恢复至室温后其恢复至透明,且放置一周后仍透明,说明该纳米乳状液抗冷冻性好。
4.加速稳定性
将该复方联苯苄唑纳米乳喷剂置于试管中,密封,于15000 r/min离心20 min,未分层,仍澄清透明。
本发明的一种复方联苯苄唑纳米乳喷剂与现有技术相比,具有以下优点:
1)本发明复方纳米乳滴粒径小于100 nm,药物脂溶性高,药物借助载体极易透过真菌、细菌的细胞壁,能直接在菌体内发挥抗菌或杀菌功能,极大的提高了联苯苄唑、肉桂醛、丙酸氯倍他索的药效,缩短了起效时间,从而减少了药物的摄入量;
2)本发明由纳米乳包裹的三种有效成分具有缓释作用,不仅起效快,且药物作用持续时间长;
3)针对真菌感染发病的特点,本发明同时具有杀真菌、杀细菌、抗炎、止痒、镇痛、抑菌的多重作用,极大的减轻了患者的痛苦;
4)将本品涂抹于皮肤吸收迅速,轻轻拍打后可吸收完全,看不出涂药痕迹;
5)无油腻感,无闷湿感,不会污染衣物,有淡淡类似桂皮的清香气味;
6)热力学稳定性好,贮存稳定性高,外观澄清透明,药物不会析出,感官品质高;
7)制备工艺简单,适合规模化生产。
具体实施方式
以下通过药效学试验和对比试验来进一步阐述本发明所述药物的有益效果。(所用纳米乳配方为制备本发明药物的配方最佳质量百分比:表面活性剂32%、助表面活性剂9.5%、油相7.42%、联苯苄唑1%、丙酸氯倍他索0.03%、肉桂醛0.05%、去离子水50%)。
试验例1 家兔皮肤给药毒性试验
参考经皮肤给药的毒性试验及评价标准试验方法取家兔24只(体重2.0±0.5 kg) 随机分为4组,分别为Ⅰ完整皮肤用药组、Ⅱ完整皮肤对照组、Ⅲ破损皮肤用药组、Ⅳ破损皮肤对照组,每组6只,雌雄各半。给药前24h用电推剪在背部脱毛,脱毛面积约150 cm2。破损皮肤组先用75%酒精消毒,然后用无菌刀片在背部脱毛区划“井”字,以渗血为度。Ⅰ、Ⅲ组家兔在脱毛区分别涂抹本发明一种复方联苯苄唑纳米乳喷剂,Ⅱ、Ⅳ组家兔在脱毛区分别涂抹生理盐水形成空白对照,早晚各一次。给药后连续观察14d,每天观察两次,每日观察动物的皮肤毛发、饮食、二便、呼吸、眼和黏膜的变化、精神状态,四肢活动及死亡情况。如遇死亡,应及时进行尸检和肉眼观察,当肉眼可见病变时,应进行病理组织学检查。结果显示:各组家兔皮毛光泽正常,对家兔的饮食、二便、呼吸、眼和黏膜变化。精神状态,四肢活动均未造成任何影响,破损皮肤家兔均在给药后第2d开始结痂,7d左右脱痂痊愈,在观察期14d内未出现急性毒性反应,无一只家兔死亡。结果表明本发明一种复方联苯苄唑纳米乳喷剂经皮肤给药安全无毒。
试验例2 豚鼠体外抗真菌试验
取100只豚鼠(体重250±50 g),试验前一天用电推剪在双侧背部脱毛,脱毛面积为 5×5cm2,用无菌砂纸在脱毛区中央磨损皮肤 2×2cm2,重度渗血。将4种常见皮肤感染真菌(红色毛癣菌、犬小孢子菌、石膏样毛癣菌、白色念珠菌)108CFU/ml菌悬液20μl涂于皮肤擦伤区,于第7天,选感染明显(局部红肿、渗出、皮肤出现鳞片样改变)、局部取样检测为阳性的豚鼠84只,随机分为7组,每组12只,雌雄各半。Ⅰ组为本发明复方联苯苄唑纳米乳喷剂组;Ⅱ组复方联苯苄唑乙醇溶液组(其中联苯苄唑、丙酸氯倍他索、肉桂醛的含量与Ⅰ组相同);Ⅲ组单方联苯苄唑纳米乳组(联苯苄唑含量与本发明相同,自制);Ⅳ组单方丙酸氯倍他索纳米乳组(丙酸氯倍他索含量与本发明相同,自制);Ⅴ组单方肉桂醛纳米乳组(肉桂醛含量与本发明相同,自制);Ⅵ组市售联苯苄唑乳膏组。各组分别取5 mg/kg该组药物涂抹于患处,每日2次,连续14天,每周观察记录病情。Ⅶ组仅涂抹生理盐水做阳性对照。每周观察有无瘙痒、红斑、丘疹、水疱、鳞屑、角化、浸渍等临床症状。
按照临床和实验室观察指标在治疗前和14天后分别进行评价。作疗效评价时:1)皮损完全消退或仅遗留色素斑,痒感消失,真菌镜检阴性为痊愈;2)皮损消退≥60%,痒感明显减轻,真菌镜检阴性为显效;3)将痊愈病例与显效病例合计为有效病例,计为有效;4)皮损消退20%~60%,痒感较轻,真菌镜检阳性为好转;5)皮损消退<20%或继续加重,痒感同前或加剧,真菌镜检阳性为无效。试验结果见表1。
表1 一种复方联苯苄唑纳米乳喷剂用于豚鼠体外抗真菌疗效对比试验
| 组别 | 例数/只 | 痊愈 | 显效 | 好转 | 无效 | 有效率 | 痊愈率 |
| Ⅰ | 12 | 12 | 0 | 0 | 0 | 100% | 100% |
| Ⅱ | 12 | 8 | 3 | 1 | 0 | 91.67% | 66.67% |
| Ⅲ | 12 | 4 | 6 | 2 | 0 | 83.33% | 33.33% |
| Ⅳ | 12 | 3 | 4 | 3 | 2 | 58.33% | 25% |
| Ⅴ | 12 | 3 | 4 | 4 | 1 | 58.33% | 25% |
| Ⅵ | 12 | 2 | 6 | 3 | 1 | 66.67% | 16.67% |
| Ⅶ | 12 | 0 | 0 | 0 | 12 | - | - |
结果表明:1)本发明一种复方联苯苄唑纳米乳喷剂在治疗豚鼠体外混合真菌感染时有很好的治疗效果,有效率与痊愈率均高达100%;2)本复方在制成普通剂型时,有效率比市售联苯苄唑乳膏高37%,可见本复方配方在治疗真菌感染时疗效显著;3)将本发明中各有效成分制成单方纳米乳对真菌感染进行治疗的试验时发现,具有杀真菌作用的单方联苯苄唑纳米乳组效果要好于市售普通剂型的联苯苄唑乳膏,而具有抗炎、抗细菌、止痒作用的丙酸氯倍他索及肉桂醛组使用效果与市售普通剂型的联苯苄唑乳膏效果相当,可见在抗真菌的治疗过程中要多种药效协同作用才能达到好的治疗效果。
试验例3 抗体外培养真菌、细菌及对比实验
在不同的培养基上分别接种红色毛癣菌、石膏样毛癣菌、犬小孢子菌、黑曲霉菌、白色念珠菌、光滑念珠菌、皮状丝孢酵母菌、化脓性链球菌、金黄色葡萄球菌、大肠杆菌,在37℃,培养24 h后缓慢向培养基上滴加0.2%、0.5%、1%复方联苯苄唑纳米乳喷剂、复方联苯苄唑悬液(与0.5%复方联苯苄唑纳米乳喷剂中的联苯苄唑、丙酸氯倍他索、肉桂醛含量相同)、单方联苯苄唑纳米乳(与0.5%复方联苯苄唑纳米乳喷剂中的联苯苄唑含量相同)、常用抗真菌药硝酸咪康唑(与0.5%复方联苯苄唑纳米乳喷剂中的联苯苄唑含量相同)悬液各1 ml,经12 h培养,观察抑菌情况,结果见表1。
表2 复方联苯苄唑纳米乳喷剂体外抗真菌、细菌的药效试验及对比试验
表2的结果表明:1)随着浓度的增加复方联苯苄唑纳米乳喷剂的抗菌活性也增加,且在剂量很低时就有药效。2)同样剂量的常用药硝酸咪康唑抗菌活性不如复方联苯苄唑悬液,说明本复方的药物配方在治疗真菌及细菌感染时有优越性,配方是科学有效的。3)本发明联苯苄唑纳米乳喷剂抗菌效果好于单方联苯苄唑纳米乳,同样显示了本复方配方的有效性。4)同样剂量的复方联苯苄唑纳米乳喷剂效果又远远好于复方联苯苄唑悬液,说明将本发明制成纳米乳剂型无疑大大提高了药效,显示了更为优越的治疗效果。5)复方联苯苄唑纳米乳喷剂、复方联苯苄唑悬液、单方联苯苄唑纳米乳的药效均好于市售的硝酸咪康唑,特别是本发明一种复方联苯苄唑纳米乳喷剂的药效,充分显示了本发明的有效性,显示了其广阔的市场前景。(“-”表示无效,“+”表示有效)
试验例4 抗炎作用:二甲苯致小鼠耳廓肿胀的抑制试验
取小鼠30只,体重18~25 g,雌雄兼备,随机平均分为5组。Ⅰ阳性对照组不给药;Ⅱ本发明复方联苯苄唑纳米乳喷剂组;Ⅲ复方联苯苄唑悬液组(各有效成分含量与本发明最佳配方含量相同,仅不将其制成纳米乳);Ⅳ丙酸氯倍他索纳米乳组;Ⅴ地塞米松软膏组。各组受试小鼠右耳壳正反两面均匀涂抹二甲苯0.05 ml致炎,左耳作空白对照。30 min后,Ⅰ组涂抹生理盐水,Ⅱ组本发明复方联苯苄唑纳米乳喷剂,Ⅲ组涂抹复方联苯苄唑悬液,Ⅳ组涂抹丙酸氯倍他索纳米乳,Ⅴ组涂抹地塞米松软膏。1 h后处死小鼠,沿耳廓基线剪下两耳。然后于耳的同一部位用直径为9 mm打孔器冲下耳片,分别称取左右耳片重量,以两耳片重量之差为肿胀度,结果见表3。
表3 复方联苯苄唑纳米乳喷剂对二甲苯致小鼠耳肿胀的抑制试验及对比试验
| 组别 | 数量 | 左耳重(mg) | 右耳重(mg) | 肿胀度(mg) | 肿胀抑制率(%) |
| Ⅰ | 6 | 16.5±1.9 | 35.8±2.1 | 19.3±1.8 | - |
| Ⅱ | 6 | 15.8±2.1 | 16.7±0.9 | 0.9±1.0 | 95.34% |
| Ⅲ | 6 | 16.1±1.8 | 19.0±1.7 | 2.9±2.1 | 84.97% |
| Ⅳ | 6 | 16.5±1.1 | 20.2±1.5 | 3.7±1.7 | 80.83% |
| Ⅴ | 6 | 15.9±2.1 | 23.5±1.1 | 7.6±1.7 | 60.62% |
结果显示:1)本发明的复方配方制剂有一定的抗炎作用,肿胀抑制率达84.97%,要好于市场上常见的抗炎药物地塞米松(60.62%)。2)单方的抗炎药物丙酸氯倍他索制成纳米乳后,效果要好于地塞米松软膏剂,说明本发明中采用丙酸氯倍他索作为抗炎成分有优越性。3)单方的丙酸氯倍他索纳米乳抗炎效果并不比普通剂型的复方联苯苄唑悬液效果好,因为本复方添加的肉桂醛能够破坏菌体的细胞壁,从而使药物更好的发挥药效,同时肉桂醛本身也具有抗炎作用,显示了本复方在抗炎作用的优越性。4)而将本发明的复方配方制成纳米乳后,其抗炎作用又有了很大的提高,肿胀抑制率达95.34%,显示出了很好的市场前景。
试验例5 复方联苯苄唑纳米乳喷剂与其他制剂治疗足癣效果对比试验
对临床诊断真菌感染足癣疾病的36名患者(男29例,女7例,年龄27.4±10.2岁,病程45±23个月),分为3组,每组12例。Ⅰ复方联苯苄唑纳米乳喷剂组,Ⅱ复方联苯苄唑悬液组(有效成分与复方联苯苄唑纳米乳喷剂相同,仅不制成纳米乳),Ⅲ联苯苄唑乳膏组。早晚两次用药,涂于患处。在治疗前、治疗2周、停药时、停药后2周分别进行随访。对临床和真菌学疗效进行综合判断,按痊愈、显效、好转、无效4级标准判定,当临床疗效和真菌学疗效不一致时,临床疗效服从于真菌学疗效。痊愈(临床症状和体征全部消退,真菌镜检和培养均阴性);显效(临床症状和体征消退≥60%,真菌镜检和培养均阴性);好转(临床症状和体征消退于20%~59%,真菌镜检或培养阳性);无效(临床症状和体征消退<20%或继续加重,真菌镜检或培养阳性)。痊愈率与显效率合称为有效率。结果见表4。
表4 复方联苯苄唑纳米乳喷剂治疗足癣试验与对比试验
结果表明:1)本发明复方联苯苄唑纳米乳喷剂在治疗真菌引起的脚癣有显著的治疗效果,有效率与痊愈率均高达100%,且不易复发。2)由本复方制备的联苯苄唑悬液效果好于市售联苯苄唑纳米乳软膏,说明本配方科学有效。3)本发明联苯苄唑纳米乳喷剂治疗效果远远好于市售联苯苄唑乳膏,且不会复发,具有广阔的市场前景。
以下通过发明人给出的实施例来进一步阐述本发明一种复方联苯苄唑纳米乳喷剂的制备方法。
实施例1
制备方法:
(1)称取配方比例的表面活性剂、助表面活性剂、油相、联苯苄唑、丙酸氯倍他索、肉桂醛、去离子水,备用;
(2)将表面活性剂与助表面活性剂混匀,然后加入油相,混匀;
(3)加入联苯苄唑,混匀;
(4)加入丙酸氯倍他索,混匀;
(5)加入肉桂醛,混匀;
(6)室温下缓慢加入去离子水,且边加去离子水边搅拌,直至形成澄清透明、无色或微黄色、粘度小且流动性好的液体,称其重量为100 g。
配方如下:EL-40 32 g、无水乙醇9 g、聚乙二醇-400 0.5 g、乙酸丁酯7.42 g、联苯苄唑1 g、丙酸氯倍他索0.03 g、肉桂醛0.05 g、去离子水50 g。
实施例2
RH-40 30 g、无水乙醇11 g、聚乙二醇-400 1 g、丙三醇2 g、乙酸乙酯4.5 g、杏仁油0.5 g、联苯苄唑0.8 g、丙酸氯倍他索0.02 g、肉桂醛0.01 g、去离子水50.17 g。
实施例3
EL-40 2 g、吐温-80 34 g、无水乙醇10 g、1,2-丙二醇1.5 g、聚乙二醇-400 0.5 g、乙酸丁酯4.5 g、三乙酸甘油酯1.5 g、联苯苄唑1.5 g、丙酸氯倍他索0.05 g、肉桂醛0.1 g、去离子水44.35 g。
实施例4
EL-40 37 g、泊洛沙姆188 3 g、无水乙醇2.9 g、聚乙二醇-400 0.1 g、乙酸丁酯8 g、肉豆蔻酸异丙酯2 g、联苯苄唑0.8 g、丙酸氯倍他索0.03 g、肉桂醛0.03 g、去离子水46.14 g。
实施例5
EL-40 32 g、RH-40 6 g、无水乙醇4 g、丙三醇 1 g、乙酸乙酯8 g、小麦胚芽油1g、联苯苄唑1 g、丙酸氯倍他索0.06 g、肉桂醛0.15 g、去离子水46.79 g。
实施例6
EL-40 35 g、无水乙醇11 g、1,2-丙二醇1 g、乙酸丁酯5 g、三乙酸甘油酯0.5 g、联苯苄唑2 g、丙酸氯倍他索0.1 g、肉桂醛0.2 g、去离子水45.2 g。
实施例7
RH-40 30 g、吐温-80 3 g、无水乙醇9 g、聚乙二醇-400 1 g、乙酸丁酯7 g、小麦胚芽油1 g、联苯苄唑1.2 g、丙酸氯倍他索0.05 g、肉桂醛0.05 g、去离子水47.7 g。
实施例8
EL-40 32 g、吐温-80 3 g、无水乙醇7.5 g、丙三醇 0.5 g、乙酸丁酯6 g、肉豆蔻酸异丙酯1 g、联苯苄唑1.3 g、丙酸氯倍他索0.03 g、肉桂醛0.12 g、去离子水48.55 g。
Claims (5)
1.一种复方联苯苄唑纳米乳喷剂,其特征在于,由下述质量百分比的原料制成:
表面活性剂30%~40%、助表面活性剂3%~14%、油相5%~10%、联苯苄唑0.8%~2%、丙酸氯倍他索0.02%~0.1%、肉桂醛0.01%~0.2%、余量为去离子水,上述原料的质量百分比之和为100%;
所述的表面活性剂是EL-40、RH-40、吐温-80和泊洛沙姆188中的一种或几种的混合物;
所述的助表面活性剂是无水乙醇、1,2-丙二醇、丙三醇和聚乙二醇-400中的一种或几种的混合物,本发明无助表面活性剂也能形成澄清透明,稳定性好的纳米乳;
所述的油相为乙酸丁酯、肉豆蔻酸异丙酯、杏仁油、小麦胚芽油、三乙酸甘油酯和乙酸乙酯的一种或几种的混合物。
2.根据权利要求1所述的复方联苯苄唑纳米乳喷剂,其特征在于,由下述质量百分比的原料制成:
表面活性剂30%~36%、助表面活性剂5%~12%、油相6%~9%、联苯苄唑0.8%~1.5%、丙酸氯倍他索0.02%~0.05%、肉桂醛0.03%~0.1%、余量为去离子水,上述原料的质量百分比之和为100%。
3.根据权利要求1所述的复方联苯苄唑纳米乳喷剂,其特征在于,由下列组分的原料制成:
表面活性剂32%、助表面活性剂9.5%、油相7.42%、联苯苄唑1%、丙酸氯倍他索0.03%、肉桂醛0.05%、余量为去离子水,上述原料的质量百分比之和为100%。
4.根据权利要求1所述的一种复方联苯苄唑纳米乳喷剂,其特征在于,该纳米乳的粒径为1 nm~100 nm。
5.权利要求1所述的复方联苯苄唑纳米乳喷剂的制备方法,其特征在于,包括以下步骤:
(1)称取配方比例的表面活性剂、助表面活性剂、油相、联苯苄唑、丙酸氯倍他索、肉桂醛、去离子水,备用;
(2)将表面活性剂与助表面活性剂混匀,然后加入油相,混匀;
(3)加入联苯苄唑,混匀;
(4)加入丙酸氯倍他索,混匀;
(5)加入肉桂醛,混匀;
(6)室温下缓慢加入去离子水,且边加去离子水边搅拌,直至形成澄清透明、无色或微黄色、粘度小且流动性好的液体,即得。
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Application publication date: 20120704 |