Mixture Design

混合料设计
  • 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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  • 文章类型: Journal Article
    在过去的几十年里,人们对使用源自药用植物的天然和安全化合物作为合成防腐剂的替代品来对抗微生物致病性的兴趣和相当大的消费者偏好。在这方面,本研究调查了芳樟醇(L)的抗食源性细菌能力的可能的协同相互作用,桉树脑(E),和樟脑(C)。确定了对金黄色葡萄球菌的抗菌协同作用,单核细胞增生李斯特菌,鼠伤寒沙门氏菌,和大肠杆菌。最佳预测混合物显示出最高的抗菌活性,为33.5%,33.2%,和33.4%的L,E,C,分别。分子对接模拟表明,所研究的单萜类化合物通过抑制特定的毒力因子如分选酶A具有有效的抗菌抑制作用,李斯特菌溶血素O,L,D-转肽酶,和多磷酸激酶。选择L的三重组合,E,C作为天然防腐剂应用于鸡胸肉碎肉中。在这方面,1MIC(16µg/mL),1.5MIC(24µg/mL),使用了2个MIC(32微克/毫升)的单核细胞增生李斯特菌,和微生物,物理化学,在4°C下储存14天,监测感官分析。不同水平的L/E/C混合物可以延缓脂质和蛋白质的氧化,抑制微生物,并保持感官属性。此外,通过使用化学计量学工具,物理化学性质之间有很强的联系,微生物参数,并建立了感官属性。简洁地说,这项研究赋予了使用混合单萜的重要性,并强调了它们的抗菌作用模式,有效性,和协同作用作为鸡肉产品中强大而安全的生物防腐剂配方。
    During the last few decades, there has existed an increased interest in and considerable consumer preference towards using natural and safe compounds derived from medicinal plants as alternatives to synthetic preservatives to combat microbial pathogenicity. In this regard, the present study investigated the possible synergistic interactions of the anti-foodborne bacterial capacity of linalool (L), eucalyptol (E), and camphor (C). The antibacterial synergistic effect was determined against Staphylococcus aureus, Listeria monocytogenes, Salmonella enterica Typhimurium, and Escherichia coli. The optimal predicted mixture showed the highest antibacterial activity at 33.5%, 33.2%, and 33.4% of L, E, and C, respectively. Molecular docking simulations displayed that the studied monoterpenes have effective antibacterial inhibitory effects by impeding specific virulence factors such as sortase A, listeriolysin O, L, D-Transpeptidase, and polyphosphate kinase. The selected triple combination of L, E, and C was applied as a natural preservative in minced chicken breast meat. In this regard, 1 MIC (16 µg/mL), 1.5 MIC (24 µg/mL), and 2 MIC (32 µg/mL) of L. monocytogenes were used, and the microbiological, physicochemical, and sensory analyses were monitored for 14 days of storage at 4 °C. The L/E/C mixture at different levels could delay lipid and protein oxidation, inhibit the microorganisms, and maintain the sensory attributes. Additionally, by using chemometric tools, strong connections between physicochemical properties, microbiological parameters, and organoleptic attributes were established. Concisely, this research confers the importance of the use of blended monoterpenes and highlights their antibacterial mode of action, effectiveness, and synergistic effects as a powerful and safe bio-preservative formulation in chicken meat products.
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  • 文章类型: Journal Article
    Ulva多糖表现出几种生理活性,包括抗病毒,抗肿瘤和抗疟原虫作用。然而,目前的加工通常导致低产量和高价格,因此缺乏商业化潜力。本研究旨在开发一种高效提取具有高生物活性的Ulva多糖的方法。细胞壁降解酶包括纤维素酶的作用,半纤维素酶,通过统计混合设计研究了果胶酶和蛋白酶对乌石多糖提取的影响。使用最有效的酶制剂作为基本成分,酶混合物的最佳比例确定如下:纤维素酶35.3%,果胶酶34.5%,碱性蛋白酶30.2%,在没有酶的情况下,多糖产量从6.43%提高到26.68%。随后,通过响应面分析,确定了最佳条件:酶浓度为1.5%,酶促时间1.1h,超声时间90分钟,酶温度60℃。在最佳提取条件下,Ulva多糖的提取率可提高到30.14%。此外,提取的多糖在DPPH中表现出强的抗氧化性能,ABTS,羟基自由基,超氧自由基和H2O2诱导的细胞损伤模型。本研究为Ulva多糖的使用和开发奠定了坚实的基础。
    Ulva polysaccharides present several physiological activities including antiviral, antitumor and anti-plasmodial effects. However, current processing usually results in low yields and high prices, thus lacking commercialization potential. The aim of this study was to develop an efficient method for the extraction of Ulva polysaccharides with high biological activity. The effect of cell wall-degrading enzymes including cellulase, hemicellulase, pectinase and protease on Ulva polysaccharide extraction was studied by statistical mixing design. Using the most effective enzyme preparations as the basic components, the optimal proportions of the enzyme mixture were determined as follows: cellulase 35.3%, pectinase 34.5%, alkaline protease 30.2%, which increased the polysaccharide yield from 6.43% in the absence of enzymes to 26.68%. Subsequently, through response surface analysis, the optimal conditions were determined: enzyme concentration of 1.5%, enzymatic time of 1.1 h, ultrasonic time of 90 min and enzymatic temperature of 60 °C. Under the optimal extraction conditions, the extraction yield of Ulva polysaccharides could be increased to 30.14%. Moreover, extracted polysaccharides exhibit strong antioxidant properties in DPPH, ABTS, hydroxyl radical, superoxide radical and H2O2-induced cellular damage models. This study laid a solid foundation for the use and development of Ulva polysaccharides.
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  • 文章类型: Journal Article
    该手稿描绘了一个广泛的数据集的组装和结构,该数据集包含2500多种自固结混凝土(SCC)混合物,从176个学术来源精心编制。数据集经过了彻底的策展过程,以消除特征冗余,纠正转录不准确,并删除重复条目。这一完善过程最终形成了一个数据集,为SCC研究领域的高级数据驱动查询做好准备。标志着对该领域的新贡献。数据集作为一个强大的基础资源,准备在以数据为中心的研究中进行后续的增强和严格的应用。它有助于SCC特性的详细表征,可能通过机器学习算法的实施,或作为比较基准来评估不同SCC配方的性能。总之,该数据集是从事SCC和类似物质研究的学者的重要资源。它提供了对用SCC替代品代替常规波特兰混凝土的生态效益的深刻见解。此汇编不仅增进了对SCC属性的理解,而且还有助于有关可持续建筑实践的更广泛对话。
    This manuscript delineates the assembly and structure of an extensive dataset encompassing more than 2500 self-consolidating concrete (SCC) mixtures, meticulously compiled from 176 scholarly sources. The dataset has been subjected to a thorough curation process to eliminate feature redundancy, rectify transcriptional inaccuracies, and excise duplicative entries. This refinement process has culminated in a dataset primed for advanced data-driven inquiries within the SCC research domain, marking a novel contribution to the field. The dataset serves as a robust foundational resource, poised for subsequent augmentations and stringent applications in data-centric studies. It facilitates a detailed characterization of SCC properties, potentially through the implementation of machine learning algorithms, or serves as a comparative benchmark to assess the performance across diverse SCC formulations. In conclusion, the dataset serves as a crucial resource for scholars engaged in studying SCC and similar substances. It offers deep insights into the ecological benefits of substituting conventional Portland concrete with SCC alternatives. This compilation not only advances the understanding of SCC properties but also contributes to the broader conversation about sustainable construction practices.
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