mixture design

混合料设计
  • 文章类型: Journal Article
    背景:依维莫司是一种被批准用于治疗绝经后女性复发的HR+乳腺癌和晚期乳腺癌的药物。已经观察到EVE的口服施用具有低的口服生物利用度和严重的上皮皮肤事件,所述事件包括皮疹和唇溃疡,然后是口服施用后的口腔溃疡。
    目的:本研究旨在通过将EVE加载到用于静脉给药的隐形脂质体制剂(S-EVE-LIPO)中来提高生物利用度。
    方法:脂质体表面用维生素ETPGS修饰,延长药物的体循环,并提供额外的好处,如抑制P-gp外排泵和与EVE协同作用。
    结果:使用薄膜水合方法制备配方,并使用D-最佳混合物设计进行优化。方差分析提出了所提出的数学模型的重要性,并通过设计专家软件生成优化配方。观察到优化的制剂(S-EVE-LIPO)具有纳米尺寸(99.5±3.70nm),具有更高的包封效力(81.5±2.86%)。S-EVELIPO制剂显示出持续释放曲线,因为在48小时内观察到90.22%的药物释放,而不含维生素ETPGS(EVE-LIPO)的制剂在24小时内仅释放74.15种药物。体外细胞毒性研究表明,维生素ETPGS的存在降低了IC50值(54.2±1.69),增加制剂的细胞摄取,也增加了ROS的产生,并显示出更好的血液相容性。
    结论:维生素ETPGS可以作为一种重要的添加剂,以提高治疗效果,减少异位毒性和给药频率。
    Everolimus is a drug approved for the treatment of breast cancer with HR+ and advanced breast cancer reoccurring in postmenopausal women. The oral administration of EVE has been observed to have low oral bioavailability and severe epithelial cutaneous events that include rashes and lip ulceration followed by mouth ulceration after oral administration.
    The present research aimed to enhance the bioavailability by loading the EVE into a stealth liposomal formulation (S-EVE-LIPO) intended for intravenous administration.
    The surface of the liposomes was modified with vitamin E TPGS, which prolongs the systemic circulation of the drug and provides additional benefits like inhibition of the P-gp efflux pump and acting synergistically with EVE.
    The formulation was prepared using the thin film hydration method and optimized using a D-optimal mixture design. ANOVA suggested the significance of the proposed mathematic model, and the optimized formulation was generated by design expert software. The optimized formulation (S-EVE-LIPO) was observed with nanometric size (99.5 ± 3.70 nm) with higher encapsulation efficacy (81.5 ± 2.86 %). The S-EVELIPO formulation indicated a sustained release profile as 90.22% drug release was observed in 48 h, whereas the formulation without vitamin E TPGS (EVE-LIPO) released only 74.15 drugs in 24 hours. In vitro cytotoxicity study suggested that the presence of vitamin E TPGS lowers the IC50 value (54.2 ± 1.69), increases the cellular uptake of the formulation, also increases the generation of ROS, and shows better hemocompatibility.
    Vitamin E TPGS could be set as a vital additive to improve therapeutic efficacy and reduce offsite toxicity and dosing frequency.
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  • 文章类型: Journal Article
    柠檬酸钾(KC)和乳酸钾(KL)由于其咸味而被认为是盐替代品,加工优势,和健康益处。然而,与这些化合物相关的明显苦味限制了它们在盐替代品中的使用。尽管有这样的挑战,很少注意改善它们的感官特性。这项研究提供了证据,表明膳食多糖角叉菜胶可以通过特异性结合K并形成双螺旋链有效地掩盖KC和KL的苦味。然后利用混合设计原理建立了低钠盐的咸味和苦味的高精度预测模型。三种含有不同钾盐的低钠盐配方(KC,KL,KCl),NaCl,和卡拉胶是基于预测模型创建的。这些配方表现出良好的咸味效力(>0.85),没有任何明显的气味,保持高钠食品的感官特性,如调味粉,同时显着降低其钠含量。这项研究为食品工业提供了一种有希望的方法来配制钠含量大大降低的替代低钠产品,可能导致盐摄入量减少。
    Potassium citrate (KC) and potassium lactate (KL) are considered as salt replacers due to their saltiness, processing advantages, and health benefits. However, the obvious bitter taste associated with these compounds has limited their use in salt substitutes. Despite this challenge, little attention has been paid to improving their sensory properties. This study provided evidence that dietary polysaccharide carrageenan can effectively mask the bitterness of KC and KL by specifically binding K+ and forming double helix chains. A highly accurate prediction model was then established for the saltiness and bitterness of low-sodium salts using mixture design principles. Three low-sodium salt formulas containing different potassium salts (KC, KL, KCl), NaCl, and carrageenan were created based on the prediction model. These formulas exhibited favorable saltiness potencies (>0.85) without any noticeable odor, preserving the sensory characteristics of high-sodium food products like seasoning powder while significantly reducing their sodium content. This research provides a promising approach for the food industry to formulate alternative low-sodium products with substantially reduced sodium content, potentially contributing to decreased salt intake.
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  • 文章类型: Journal Article
    认识到由于成分变化,使用植物药作为可持续害虫控制剂的挑战,这项研究解决了传统的基于组件的方法,如Hewlett和Plackett或Wadley模型的局限性。基于成分之间不相互作用的假设,由于动态的分子间相互作用,这些模型通常无法准确预测结果。我们介绍了一种基于混合的方法,采用实验设计和多项式建模的结合。该技术准确预测了对荨麻疹的杀虫活性,大型蚤的生态毒性,不同组成的迷迭香精油对菜豆的植物毒性活性。多项式模型的杀虫活性和生态毒性的RMSE值为66.9和5.0,分别,虽然它们在基于组件的模型中更高,分别高达1097.7和41.3。此外,我们利用多目标优化算法来确定油和化合物的最佳补充混合。该策略旨在使杀虫效果最大化,同时使生态毒性和植物毒性最小化。我们预测多组分混合物效应的方法可能会弥合研究与商业化之间的知识鸿沟。
    Recognizing the challenges in using botanicals as sustainable pest control agents due to compositional variation, this study addresses the limitations of traditional component-based approaches such as Hewlett and Plackett or Wadley\'s models. Based on the assumption of noninteractivity among constituents, these models often fail to predict outcomes accurately due to dynamic intermolecular interactions. We introduce a whole mixture-based approach, employing a combination of experimental design and polynomial modeling. This technique accurately predicts miticidal activity on Tetranychus urticae, ecotoxicity on Daphnia magna, and phytotoxic activities on Phaseolus vulgaris of Rosemarinus officinalis essential oils with varying composition. The RMSE values from the polynomial model are 66.9 and 5.0 for miticidal activity and ecotoxicity, respectively, while they are much higher in component-based models, up to 1097.7 and 41.3, respectively. Additionally, we utilize multiobjective optimization algorithms to identify the optimal supplementary blending of oils and compounds. This strategy aims to maximize miticidal effectiveness while minimizing ecotoxicity and phytotoxicity. Our approach for predicting multicomponent mixture effects is likely to bridge the knowledge gap between research and commercialization.
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  • 文章类型: Journal Article
    在本研究中,使用12种细胞培养基进行初步筛选,选择性能最好的四种培养基进行进一步研究。使用增强单纯形质心混合物设计评估了用于YFV生产的四种介质混合物的优化。在所有被调查的不同模型中,二次模型被认为是探索混合设计的最合适模型。发现M10对YFV生产的影响最大,其次是M9、M4和M1。与它们与其他介质的共混物相比,M1和M4介质的单独利用产生更高的收益。当M1培养基与其他培养基组合时,YFV滴度降低。与它们各自的浓度相比,M9和M10培养基的组合使用导致更高的病毒产量。发现从初级CEF获得较高滴度的YFV的最佳比率为约38:62,其中M9和M10是最有利的培养基混合物。培养基混合物的使用导致病毒滴度的显着增加高达2.6×108PFU/ml或2log滴度产量,相当于1.92×105剂量,生长条件或其他过程因素没有任何变化。这项研究得出的结论是,可以有效地利用混合物设计来选择培养基混合物的最佳组合,以提高细胞培养物中的病毒产量。
    In the present study, an initial screening was conducted using 12 types of cell culture media, and four media with the best performance were selected for further study. The optimization of four media blend for YFV production was evaluated using an Augmented simplex centroid mixture design. Among all the different models that were investigated, the quadratic model was found to be the most appropriate model for exploring mixture design. It was found that M10 exhibited the greatest impact on YFV production, followed by M9, M4, and M1. The utilization of M1 and M4 media individually yielded higher compared to their blends with other media. The YFV titers were reduced when M1 media was combined with other media. The utilization of M9 and M10 media in combination resulted a higher viral yield compared to their respective concentrations. The optimal ratio for achieving a higher titer of YFV from primary CEFs was found to be approximately 38:62, with M9 and M10 being the most favorable media blend. The use of a media mixture led to a significant increase of virus titer up to 2.6 × 108 PFU/ml or 2 log titer yield, which is equivalent to 1.92 × 105 doses, without any changes to growth conditions or other process factors. This study concluded that the utilization of a mixture design could be efficiently employed to choose the optimal combination of media blends for enhanced viral production from cell culture.
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  • 文章类型: Journal Article
    种子包衣确保从发育的早期阶段有针对性地递送各种化合物,以提高作物质量和产量。已知硅和藻酸盐具有植物生物刺激作用。稻壳(RH)是生物二氧化硅的重要来源。在这项研究中,我们用藻酸盐-甘油-山梨糖醇(AGS)薄膜涂覆绿豆种子,其中嵌入了RH中的生物纳米二氧化硅(SiNPs),具有显著的植物生物刺激活性。在温控密封反应器中对磨碎的RH进行稀酸水解后,将所得RH基材中和并在650°C下煅烧。天然RH的结构和组成特征,中间基板,和SiNPs,以及从SiNPs中释放可溶性Si,被调查了。使用具有三个因素的混合物设计来优化用于种子包衣的膜。在不存在和存在从开始添加的50mM盐的情况下评估生理特性。研究的主要参数是生长,发展,代谢活动,活性氧(ROS)代谢,和幼苗的Si含量。结果表明,均匀的AGS膜形成嵌入具有Si-O-Si和Si-OH键的50nm非晶SiNP,0.347cm3/gCPV(累积孔体积),和240m2/gSSA(比表面积)。涂膜具有显著的增强代谢的性能,盐胁迫下绿藻幼苗质子泵活性和ROS清除。研究表明,RH生物SiNPs可以有效地应用,连同优化的,有益的基于藻酸盐的薄膜,作为植物生物刺激剂,从植物发育的第一阶段开始缓解盐胁迫。
    Seed coating ensures the targeted delivery of various compounds from the early stages of development to increase crop quality and yield. Silicon and alginate are known to have plant biostimulant effects. Rice husk (RH) is a significant source of biosilica. In this study, we coated mung bean seeds with an alginate-glycerol-sorbitol (AGS) film with embedded biogenic nanosilica (SiNPs) from RH, with significant plant biostimulant activity. After dilute acid hydrolysis of ground RH in a temperature-controlled hermetic reactor, the resulting RH substrate was neutralized and calcined at 650°C. The structural and compositional characteristics of the native RH, the intermediate substrate, and SiNPs, as well as the release of soluble Si from SiNPs, were investigated. The film for seed coating was optimized using a mixture design with three factors. The physiological properties were assessed in the absence and the presence of 50 mM salt added from the beginning. The main parameters investigated were the growth, development, metabolic activity, reactive oxygen species (ROS) metabolism, and the Si content of seedlings. The results evidenced a homogeneous AGS film formation embedding 50-nm amorphous SiNPs having Si-O-Si and Si-OH bonds, 0.347 cm3/g CPV (cumulative pore volume), and 240 m2/g SSA (specific surface area). The coating film has remarkable properties of enhancing the metabolic, proton pump activities and ROS scavenging of mung seedlings under salt stress. The study shows that the RH biogenic SiNPs can be efficiently applied, together with the optimized, beneficial alginate-based film, as plant biostimulants that alleviate saline stress from the first stages of plant development.
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  • 文章类型: Journal Article
    来自三种芳香植物物种的精油(EO)的协同作用,小牛亚种。胡椒(C.Presl)Bég.(FV),牛至(OH)和LavandulaaustroapenninaN.G.Passal.,Tundis&Upson。(LA),评估了它们对脂多糖(LPS)刺激的RAW264.7巨噬细胞中一氧化氮产生的抑制特性。我们利用实验设计(DoE)方法通过结合三种精油(EO)来优化配方,同时考虑两个响应变量,最大限度地抑制NO与最小的细胞毒性。预测了组分的最佳混合,统计学结果的疗效得到了实验验证。对应于87.7%FV的组合,12.3%LA和0.0%OH显示出高抑制作用(76.3%),细胞毒性可忽略不计(4.5%)。这项研究为茴香之间的相互作用提供了新的信息,牛至和薰衣草精油,并显示它们如何协同抑制体外LPS诱导的NO产生。
    The synergistic effects of essential oils (EOs) from three aromatic plant species, Foeniculum vulgare subsp. piperitum (C.Presl) Bég. (FV), Origanum heracleoticum L. (OH) and Lavandula austroapennina N.G.Passal., Tundis & Upson. (LA), were evaluated for their inhibitory properties on nitric oxide production in RAW 264.7 macrophages stimulated with lipopolysaccharide (LPS). We utilized a Design of Experiments (DoE) methodology to optimize a formulation by combining three Essential Oils (EOs), while simultaneously taking into account two response variables, maximization of NO inhibition with minimum cytotoxicity. The optimal blend of components was predicted, and the statistical outcome\'s efficacy was experimentally verified. The combination corresponding to 87.7 % FV, 12.3 % LA and 0.0 % OH showed high inhibitory effect (76.3 %) with negligible cytotoxicity (4.5 %). This research provides new information on the interactions among fennel, oregano and lavender essential oils and shows how they can synergistically inhibit in vitro LPS-induced NO production.
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  • 文章类型: Journal Article
    该研究致力于采用质量设计(QbD)方法制造缓释己二酸(APA)口腔膜。利用热熔挤出技术开发了用于治疗口干症的薄膜。创建了以患者为中心的质量目标产品概况,并相应地确定了关键质量属性。三项早期制剂开发试验,辅以风险评估,使配方和工艺参数与产品质量标准保持一致。采用D-最优混合料设计,通过评估三个配方变量来系统优化配方:控释聚合物Eudragit®(ERSPO)的量,生物粘合剂Carbopol®(CBP971P),和成孔剂聚乙二醇(PEG1500)作为独立变量,以及在1、4和8小时内释放的%APA作为响应。使用实验软件设计(Design-Expert®),计算了总共16次实验运行,并使用ThermofisherScientificTM双螺杆挤出机挤出。所有薄膜均表现出可接受的含量均匀性和延长释放曲线,具有释放APA至少8小时的潜力。含有30%ERSPO的薄膜,10%CBP971P,20%PEG1500在8小时内释放了88.6%APA。增加CBP浓度可增强粘附性和溶胀能力,而降低ERSPO浓度可产生具有更高机械强度的薄膜。释放动力学非常适合Higuchi和Krosmeyer-Peppas模型,表明Fickian扩散释放机制。
    The study endeavors the fabrication of extended-release adipic acid (APA) buccal films employing a quality by design (QbD) approach. The films intended for the treatment of xerostomia were developed utilizing hot-melt extrusion technology. The patient-centered quality target product profile was created, and the critical quality attributes were identified accordingly. Three early-stage formulation development trials, complemented by risk assessment aligned the formulation and process parameters with the product quality standards. Employing a D-optimal mixture design, the formulations were systematically optimized by evaluating three formulation variables: amount of the release-controlling polymer Eudragit® (E RSPO), bioadhesive agent Carbopol® (CBP 971P), and pore forming agent polyethylene glycol (PEG 1500) as independent variables, and % APA release in 1, 4 and 8 h as responses. Using design of experiment software (Design-Expert®), a total of 16 experimental runs were computed and extruded using a Thermofisher ScientificTM twin screw extruder. All films exhibited acceptable content uniformity and extended-release profiles with the potential for releasing APA for at least 8 h. Films containing 30% E RSPO, 10% CBP 971P, and 20% PEG 1500 released 88.6% APA in 8 h. Increasing the CBP concentration enhanced adhesiveness and swelling capacities while decreasing E RSPO concentration yielded films with higher mechanical strength. The release kinetics fitted well into Higuchi and Krosmeyer-Peppas models indicating a Fickian diffusion release mechanism.
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  • 文章类型: Journal Article
    无麸质烘焙产品是乳糜泻和麸质敏感性患者的最终解决方案。在这项研究中,使用混合物设计方法优化了无麸质海绵蛋糕的生产。成分量的影响,包括藜麦(藜麦)(6-10克),油膏(EleagnusAngustifolia)(1-2g),和南瓜粉(葫芦)(1-4克)对理化特性和感官品质(颜色,风味,可切割性,纹理,外观,和整体可接受性)的蛋糕进行了调查。确定了解释不同量的面粉对所有响应变量的影响的重要回归模型。本研究中提出的模型具有较高的R2和R2(adj)。因此,该模型被批准用于拟合信息。最后,无麸质海绵蛋糕的配方是使用1克油饼粉,1克南瓜,和10克藜麦面粉,以达到所需的感官质量。
    Gluten-free bakery products are the definitive solution for people with celiac disease and gluten sensitivity. In this study, the production of gluten-free sponge cake was optimized using a mixture design methodology. Effects of the amount of ingredients, including quinoa (Chenopodium quinoa) (6-10 g), oleaster (Eleagnus Angustifolia) (1-2 g), and pumpkin powder (Cucurbita moschata) (1-4 g) on the physicochemical characteristics and sensory qualities (color, flavor, cutability, texture, appearance, and overall acceptability) of cakes were investigated. Significant regression models that explained the effects of different amounts of flour on all response variables were determined. The proposed model in this study had high R2 and R2 (adj). Therefore, the model was approved for fitting information. Finally, a gluten-free sponge cake recipe was formulated using 1 g of oleaster flour, 1 g of pumpkin, and 10 g of quinoa flour to achieve the desired sensory quality.
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  • 文章类型: Journal Article
    聚氨酯的热稳定性,以其局限性而闻名,在这项研究中,通过引入基于碳水化合物的扩链剂寻求改进。在这篇研究论文中,我们系统地寻求通过掺入羧甲基纤维素和壳聚糖来提高聚氨酯的耐热性,代表了混合物设计方法在制备中的开创性应用。在这个合成中,羟基封端的聚丁二烯和异佛尔酮二异氰酸酯(IPDI)反应制备-NCO封端的预聚物,其随后与不同摩尔比的CMC和CSN反应以开发一系列五个PU样品。使用傅立叶变换红外光谱技术对制备的PU样品进行了表征。使用热重分析(TGA)检查PU样品的热解。据观察,在所有样本中,PUS-3在宽温度范围内显示出显著的热稳定性。进行了全面的统计分析以证实实验结果。据估计,当涉及相互作用方式时,CMC和CSN显著增强样品的热稳定性。混合物设计的ANOVA表表明,在很宽的温度范围内,混合物模型可以解释超过90%的热稳定性总变化。此外,PSU-3在较宽的温度范围内表现出4%的热稳定性,与当代样本相比。
    The thermal stability of polyurethanes, known for its limitations, was addressed in this research by seeking improvement through the introduction of carbohydrate-based chain extenders. In this research paper, we systematically sought to improve the thermal resistance of polyurethanes by incorporating carboxymethyl cellulose and chitosan, representing a pioneering application of the mixture design approach in their preparation. In this synthesis, hydroxyl-terminated polybutadiene and isophorone diisocyanate (IPDI) were reacted to prepare -NCO terminated prepolymer, which was subsequently reacted with varying mole ratios of CMC and CSN to develop a series of five PU samples. The prepared PU samples were characterized using the Fourier-transformed infrared spectroscopic technique. Thermal pyrolysis of PU samples was examined using thermal gravimetric analysis (TGA). It was observed that, among all the samples, PUS-3 showed remarkable thermal stability over a wide temperature range. A comprehensive statistical analysis was conducted to substantiate the experimental findings. It was estimated that CMC and CSN significantly enhance the thermal stability of the samples when involved in an interaction fashion. The ANOVA Table for the mixture design demonstrates that over 90 % of the total variation in thermal stability is explained by the mixture model across a wide temperature range. Moreover, PSU-3 exhibited 4 % more thermal stability over a wide range of temperatures on average, as compared to contemporary samples.
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  • 文章类型: Journal Article
    姜黄素,一种天然发现的重要生物活性化合物,具有多种生物应用。然而,姜黄素的主要限制是由于其在水中的溶解度有限而导致的低生物利用度。因此,通过制备姜黄素的水包油纳米分散体,乳化剂可以在纳米分散体的制备中发挥关键作用,从而解决这一问题。在本研究中,使用亚临界水方法和混合物设计研究了吐温80,阿拉伯树胶和聚乙二醇三种乳化剂对制备具有理想性能的纳米分散体的影响。将所获得的纳米分散体的ζ电位和粒度考虑为结果因素。吐温80,阿拉伯树胶和聚乙二醇的乳化剂的最佳值为0.588g,0.639g和0.273g,分别,使用建议的模型,使得所获得的纳米分散体具有最小粒径(101.89nm)和最大ζ电位(-24.99mV)。事实上,在乳化剂的这些值下从实验数据获得102.5nm和-24.7mV。此外,最大负载电位(0.199g/L),效率(99.5%),在这些最佳值下获得最小总姜黄素损失(0.5%)。结果还显示,纳米分散体具有强大的抗氧化活性(65.27%),在面对大肠杆菌和金黄色葡萄球菌菌株时具有额外的抗菌活性。此外,姜黄素纳米分散体被HT-29细胞显著吸收,并导致细胞产生氧化应激,导致癌细胞生长减少。
    Curcumin, a vital bioactive compound found naturally, has diverse biological applications. However, a major limitation of curcumin is its low bioavailability caused by its limited solubility in water. Hence, it is possible to overcome this problem through preparing oil in water nanodispersion of curcumin that emulsifier can play key role to produce nanodispersion. In the present study, the effect of three emulsifiers of Tween 80, Arabic Gum and Polyethylene glycol on preparing nanodispersions with desirable properties was investigated using subcritical water method and a mixture design. Zeta-potential and particle size of the achieved nanodispersions were taken into account as outcome factors. The optimum values for emulsifiers of Tween 80, Arabic Gum and Polyethylene glycol were obtained as 0.588 g, 0.639 g and 0.273 g, respectively, using the suggested model, so that obtained nanodispersion had minimum particle size (101.89 nm) and maximum zeta-potential (-24.99 mV). In fact, 102.5 nm and - 24.7 mV were obtained from experimental data at these values of emulsifiers. In addition, maximum loading potential (0.199 g/L), efficiency (99.5%), and minimum total curcumin loss (0.5%) were acquired at these optimum values. The results also show that the nanodispersion had a powerful antioxidant activity (65.27%) with extra antibacterial activity in facing with both E. coli and S. aureus strains. Moreover, curcumin nanodispersion was significantly taken up by HT-29 cells and resulted in the production of oxidative stress in the cells, leading to a decrease in the growth of cancer cells.
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