product quality

产品质量
  • 文章类型: Journal Article
    为了提高连续微波干燥(CMD)生产的蟹苹果片(CASs)的产品质量并获得合适的工艺参数,加工参数的影响,包括切片厚度,微波功率,空气速度,和传送带速度,关于温度方面的评价指标,水分含量,颜色(L*,a*,b*),硬度,脆性,通过响应面法研究了CASs的总酚含量。结果表明,微波功率对CMD下CAS的评价指标影响最大,其次是空气速度,切片厚度,和输送带速度。为了生产所需的产品质量,CASCMD的合适参数被优化为1.25mm切片厚度,14,630W微波功率,0.50m·s-1风速,和0.33m·min-1输送带速度。在此之后,CMD下的水分含量为13.53%,想要的颜色,硬度0.79g,脆性12.97(峰数),总酚含量5.48mg·g-1。该研究为使用响应面法优化CAS的加工参数提供了理论框架。
    To improve product quality and obtain suitable processing parameters for crab apple slices (CASs) produced by continuous microwave drying (CMD), the effects of processing parameters, including slice thickness, microwave power, air velocity, and conveyor belt speed, on the evaluation indexes in terms of temperature, moisture content, color (L*, a*, b*), hardness, brittleness, and total phenolic content of CASs were investigated via the response surface method. The results indicated that microwave power has the greatest effect on the evaluation indexes applied to the CASs under CMD, followed by air velocity, slice thickness, and conveyor belt speed. To produce the desired product quality, the appropriate parameters for CMD of CASs were optimized as 1.25 mm slice thickness, 14,630 W microwave power, 0.50 m·s-1 air velocity, and 0.33 m·min-1 conveyor belt speed. Following that, the moisture content under CMD was found to be 13.53%, the desired color, hardness 0.79 g, brittleness 12.97 (number of peaks), and the total phenolic content 5.48 mg·g-1. This research provides a theoretical framework for optimizing the processing parameters of CASs using the response surface method.
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  • 文章类型: Journal Article
    玻璃纤维增强聚合物(GFRP)层压板由于其可用性而在许多应用中使用,高机械性能,和成本效益。在多层层压材料的生产过程中会出现波纹或褶皱形式的纤维缺陷。当生产具有显著厚度的弯曲层压板时,这种缺陷的可能性增加。研究已经证实,制造过程中的纤维变形导致层压材料的机械性能降低。因此,这些缺陷的早期检测是至关重要的。本文的主要部分涉及使用主动红外热成像技术检测弯曲多层GFRP层压板中皱纹的可能性的研究。通过分析扫描和显微图像来评估人工皱纹的大小。通过将样品与模具和假定的标称形状进行比较来评估样品的形状变形。在这项工作中提出了高压釜外制造工艺对减少形成的褶皱而不会显着影响层压板的内部结构的影响。这项研究证明了使用主动红外热成像技术检测厚弯曲层压板中皱纹的能力。然而,它还显示了热成像结果的解释如何受到结构曲率的影响,缺乏均匀的加热,和热成像装置的配置。
    Glass fiber-reinforced polymer (GFRP) laminates are used in many applications because of their availability, high mechanical properties, and cost-effectiveness. Fiber defects in the form of waviness or wrinkles can occur during the production of multilayered laminates. When curved laminates of significant thickness are produced, the likelihood of such defects increases. Studies have confirmed that fiber deformation during manufacture leads to a reduction in the mechanical properties of laminates. Therefore, early detection of such defects is essential. The main part of this paper deals with research into the possibility of using active infrared thermography to detect wrinkles in curved multilayered GFRP laminates. The size of the artificial wrinkles was assessed by analyzing scans and microimages. The shape deformations of the samples were evaluated by comparing the samples with the mold and the assumed nominal shape. The influence of the out-of-autoclave manufacturing process on the reduction in wrinkles formed without significantly affecting the internal structure of the laminate is presented in this work. This research demonstrated the ability to detect wrinkles in thick curved laminates using active infrared thermography. However, it also showed how the interpretation of the thermographic results is affected by the curvature of the structure, the lack of uniform heating, and the configuration of the thermographic setup.
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  • 文章类型: Journal Article
    本研究旨在通过使用优化螺旋圈内压力分布的机构来改善红花油生产的压力机设备。对生产的红花油的主要成分进行了详细分析,包括定量和定性评估。通过探索螺旋压榨机上红花榨油过程的依赖性,确定了最优参数。作为研究的结果,确定了间隙筒和压紧螺钉之间的最佳隔膜间隙,在ω=6.2rad/s和δ=5mm时获得最佳的油收率百分比。该研究还通过分析提取的油,比较了现有的DreamModernODM-01螺旋压力机及其升级版的性能。结果表明,随着现有和现代化的螺旋压力机的运行,主要油成分的定量和定性组成发生了变化。例如,不饱和脂肪酸的数量,如油酸(7.7±0.566%),亚油酸(85.3±1.185%),和亚麻酸(1.2±0.223%),增加。红花油中无机物的含量增加:铁(0.023±0.031mg/kg),磷(0.086±0.059mg/kg),硅(0.136±0.075mg/kg),和其他人。这项研究的结果具有重要的商业价值,并为全球市场实施提供了有希望的前景。
    This study aims to improve press equipment for safflower oil production by using a mechanism that optimizes pressure distribution within screw turns. A detailed analysis of the main components of the produced safflower oil was performed, encompassing both quantitative and qualitative assessments. Through the exploration of dependencies governing the safflower oil pressing process on the screw press, the optimal parameters were determined. As a result of the research, the optimal diaphragm gap between the gape cylinder and the pressing screw was determined, with the optimal oil yield percentage achieved at ω = 6.2 rad/s and δ = 5 mm. The study also compared the performance of the existing Dream Modern ODM-01 screw press and its upgraded version by analyzing the extracted oil. The results reveal changes in the quantitative and qualitative composition of the main oil components following the operation of the existing and the modernized screw presses. For instance, the amount of unsaturated fatty acids, such as oleic acid (7.7 ± 0.566%), linoleic acid (85.3 ± 1.185%), and linolenic acid (1.2 ± 0.223%), increased. There was an increase in the presence of inorganic substances in safflower oil: iron (0.023 ± 0.031 mg/kg), phosphorus (0.086 ± 0.059 mg/kg), silicium (0.136 ± 0.075 mg/kg), and others. The findings of this study hold significant commercial value and offer promising prospects for global market implementation.
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  • 文章类型: Journal Article
    培养基制备参数对培养基质量有显著影响,细胞培养性能,生产力,和产品质量。建立适当的培养基制备程序对于确保稳健的CHO细胞培养过程至关重要。过程分析技术(PAT)提供了独特的方法来量化评估并提高培养基质量。这里,在宽范围的温度(40-80°C)和pH(7.6-10.0)下制备细胞培养基。使用三种实时PAT比较培养基质量概况:傅里叶变换红外(FTIR)光谱,拉曼光谱,和激发发射矩阵(EEM)光谱。FTIR和拉曼光谱鉴定了在高制备温度(80°C)下和在不同制备pH下的培养基质量的变化,其负面影响单克隆抗体(mAb)的产生。在生产三种不同单克隆抗体的补料分批工艺中,在所有培养基制备温度下,活细胞密度(VCD)和细胞活力大多不受影响,当在80°C制备的基础和补料培养基中培养时,mAb的滴度和细胞比生产率降低。单独的高饲料制备pH是耐受的,但细胞生长和生产率曲线偏离对照条件。Further,电荷变体(主要,酸性,基本物种)和糖基化(G0F,Afucosylation,和高甘露糖)进行了检查。对于这些质量属性中的一个或多个,观察到统计学上显著的差异,在培养基制备中具有任何变化。在这项研究中,我们证明了培养基制备条件和细胞生长之间的强烈关联,生产力,和产品质量。通过PAT实施对培养基的快速评估能够更全面地了解培养基质量的不同参数以及对CHO细胞培养的相应影响。
    Media preparation parameters contribute significantly to media quality, cell culture performance, productivity, and product quality. Establishing proper media preparation procedures is critical for ensuring a robust CHO cell culture process. Process analytical technology (PAT) enables unique ways to quantify assessments and improve media quality. Here, cell culture media were prepared under a wide range of temperatures (40-80°C) and pH (7.6-10.0). Media quality profiles were compared using three real-time PATs: Fourier-transform infrared (FTIR) spectroscopy, Raman spectroscopy, and excitation-emission matrix (EEM) spectroscopy. FTIR and Raman spectroscopies identified shifts in media quality under high preparation temperature (80°C) and at differing preparation pH which negatively impacted monoclonal antibody (mAb) production. In fed-batch processes for production of three different mAbs, viable cell density (VCD) and cell viability were mostly unaffected under all media preparation temperatures, while titer and cell specific productivity of mAb decreased when cultured in basal and feed media prepared at 80°C. High feed preparation pH alone was tolerated but cell growth and productivity profiles deviated from the control condition. Further, charge variants (main, acidic, basic species) and glycosylation (G0F, afucosylation, and high mannose) were examined. Statistically significant differences were observed for one or more of these quality attributes with any shifts in media preparation. In this study, we demonstrated strong associations between media preparation conditions and cell growth, productivity, and product quality. The rapid evaluation of media by PAT implementation enabled more comprehensive understanding of different parameters on media quality and consequential effects on CHO cell culture.
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  • 文章类型: Journal Article
    文献中广泛描述了使用混合模型来预测细胞培养中的过程演变。这些模型结合了机械和机器学习方法,允许预测复杂的过程行为,在存在许多过程变量的情况下,无需收集大量数据。混合模型不能直接用于预测最终产品关键质量属性,或CQA,因为它们通常只在过程结束时测量,许多类别的CQA需要更多的机械知识。历史模型可以更好地预测CQA;然而,它们不能直接将操纵的过程参数与最终的CQA相关联,因为他们需要过程进化的知识。在这项工作中,我们提出了一种基于混合传播模型与历史数据驱动模型相结合的创新建模方法,也就是说,组合混合模型,用于同时预测全过程动态和CQAs。在工业数据集上评估了组合混合模型的性能,并与经典黑箱模型进行了比较,直接将操纵的工艺参数与CQAs相关联。所提出的组合混合模型在预测CQA方面平均优于黑盒模型33%,同时只需要大约一半的数据用于模型训练以匹配性能。因此,在模型准确性和实验成本方面,本研究中的组合混合模型为过程优化应用提供了一个有前途的平台。
    The use of hybrid models is extensively described in the literature to predict the process evolution in cell cultures. These models combine mechanistic and machine learning methods, allowing the prediction of complex process behavior, in the presence of many process variables, without the need to collect a large amount of data. Hybrid models cannot be directly used to predict final product critical quality attributes, or CQAs, because they are usually measured only at the end of the process, and more mechanistic knowledge is needed for many classes of CQAs. The historical models can instead predict the CQAs better; however, they cannot directly relate manipulated process parameters to final CQAs, as they require knowledge of the process evolution. In this work, we propose an innovative modeling approach based on combining a hybrid propagation model with a historical data-driven model, that is, the combined hybrid model, for simultaneous prediction of full process dynamics and CQAs. The performance of the combined hybrid model was evaluated on an industrial dataset and compared to classical black-box models, which directly relate manipulated process parameters to CQAs. The proposed combined hybrid model outperforms the black-box model by 33% on average in predicting the CQAs while requiring only around half of the data for model training to match performance. Thus, in terms of model accuracy and experimental costs, the combined hybrid model in this study provides a promising platform for process optimization applications.
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  • 文章类型: Journal Article
    研究了催化红外热烫漂联合超声预处理对蓝莓品质和蜡质结构的影响。制备了不同的蓝莓样品,包括对照(未处理)和通过热水烫漂(HB)处理的样品,催化红外热烫(CIB),超声-催化红外热烫(US-CIB),和催化红外热烫漂-超声(CIB-US)。研究了不同预处理对蓝莓表皮显微结构的影响。HB后蓝莓的干燥时间,US-CIB,CIB-US下降了11.61%,17.54%,和17.27%,分别,与对照组(33.75h)相比,干燥效率明显提高。蓝莓预处理后的多酚和花青素含量较高,苯酚增加29.51-44.21%,花色苷增加8.81-20.80%,蓝莓的抗氧化能力也优于对照,CIB提高了蓝莓的抗氧化能力。CIB-US可作为蓝莓干燥的高效预处理方法。
    This paper investigated the effect of catalytic infrared blanching combined with ultrasound pretreatment on quality and waxy structure of blueberries. Different blueberry samples were prepared, including control (untreated) and samples treated by hot water blanching (HB), catalytic infrared blanching (CIB), ultrasound-catalytic infrared blanching (US-CIB), and catalytic infrared blanching-ultrasound (CIB-US). The effect of different pretreatments on the microstructure of blueberry epidermis was studied. The drying time of blueberries after HB, US-CIB, and CIB-US was decreased by 11.61%, 17.54%, and 17.27%, respectively, compared with control (33.75 h), and drying efficiency was significantly improved. Blueberries after pretreatments had higher content of polyphenol and anthocyanin, with an increase of 29.51-44.21% in phenol and 8.81-20.80% in anthocyanin, the antioxidant capacity of blueberries was also better than control and CIB enhanced the antioxidant capacity of blueberries. CIB-US can be used as an efficient pretreatment method for blueberry drying.
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  • 文章类型: Meta-Analysis
    发酵的热带叶粉(FTLM)目前被添加到鸡饲料中,以提高鸡的生产力,因为它们有营养和药用益处。然而,FTLM对肉鸡生产力和健康的影响尚不清楚。因此,这项荟萃分析旨在评估FTLM对肉鸡性能结果的影响,检索了11项对照研究,用于探索日粮FTLM补充对生长性能的影响[采食量(FI),饲料转化率(FCR),平均日增益(ADG)],血脂,屠宰性能(腹部脂肪,乳房和大腿肌肉重量),肉质[pH,滴水损失,剪切力,亮度(L*),发红(a*),和黄色(b*)],和肠道组织形态学[绒毛高度(VH),肉鸡的隐窝深度(CD)和VH/CD值]。调节者效应的亚组和荟萃回归分析(即,叶粉类型,补充水平,肉鸡菌株,饲养阶段,和发酵微生物)对肉鸡生长性能的影响。结果表明,膳食FTLM补充增加FI[标准化平均差(SMD)=0.11;95%置信区间(CI):0.02,0.20;P<0.0001],改善了肉鸡的ADG(SMD=0.33;95%CI:0.23,0.43;P<0.0001)和FCR(SMD=-0.21;95%CI:-0.30,-0.11;P<0.0001)。此外,FTLM提高了屠宰性能,肉质,和肉鸡的肠道组织形态学。饲喂0-5g/kg饲料FTLM的肉鸡具有更好的FI,FCR,和ADG比对照组考虑了显著的异质性。元回归显示,分析的调节因素影响了增长绩效结果,并解释了一些异质性的来源。可以得出结论,在肉鸡饲料中添加高达5g/kg的FTLM可以提高生长性能,肠道组织形态学,屠宰性能,和肉质,对敷料百分比和血脂谱无不利影响。
    Fermented tropical leaf meals (FTLM) are currently added to chicken feed to improve chicken productivity due to their reported nutritional and medicinal benefits. However, the effects of FTLM on broiler productivity and health are less clear. Thus, this meta-analysis was designed to assess the effects of FTLM on the performance outcomes of broilers Eleven controlled studies were retrieved and used to explore the impacts of dietary FTLM supplementation on growth performance [feed intake (FI), feed conversion ratio (FCR), average daily gain (ADG)], blood lipids, slaughter performance (abdominal fat, breast and thigh muscles weight), meat quality [pH, drip loss, shear force, lightness (L*), redness (a*), and yellowness (b*)], and intestinal histomorphology [villus height (VH), crypt depth (CD) and VH/CD values] of broilers. Subgroup and meta-regression analyses of the effects of moderators (i.e., leaf meal type, supplementation level, broiler strains, rearing phase, and fermentation microbes) on the growth performance of broilers were also assessed. Results show that dietary FTLM supplementation increased FI [standardised mean difference (SMD) = 0.11; 95% confidence interval (CI): 0.02, 0.20; P < 0.0001], improved ADG (SMD = 0.33; 95% CI: 0.23, 0.43; P < 0.0001) and FCR (SMD =  - 0.21; 95% CI: - 0.30, - 0.11; P < 0.0001) in broilers. In addition, FTLM enhanced slaughter performance, meat quality, and intestinal histomorphology of broilers. Broilers fed 0-5 g/kg feed FTLM had better FI, FCR, and ADG than the controls taking significant heterogeneity into account. Meta-regression revealed that analysed moderators influenced growth performance results and accounted for some of the sources of heterogeneity. It can be concluded that up to 5 g/kg of FTLM can be added to broiler feed to improve growth performance, intestinal histomorphology, slaughter performance, and meat quality without adverse effects on dressing percentage and blood lipid profiles.
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  • 文章类型: Journal Article
    为了加速实现碳中和,政府实施碳税和碳排放交易等政策,促进了制造业低碳发展。这些措施已经到位,以减少碳排放和提高制造业的可持续性。再制造是企业低碳转型的重要方向,提高再制造产品质量对再制造企业的可持续性至关重要。阐明旨在减少碳排放的政策对再制造产品质量的影响,我们开发了一个游戏模型,涉及三个关键参与者:原始设备制造商(OEM),再制造商(IR),和零售商。该模型是基于消费者对新产品和再制造产品的异质需求而构建的。该研究探讨了旨在减少碳排放的各种政府政策对再制造企业与质量相关的决策的影响。我们的主要重点是实施两项具体政策:高水平的碳税收政策和以提高碳定价为特征的碳交易政策。这些政策为再制造商(IR)创造了良好的环境,以提高其产品质量。再制造产品的销售受消费者购买偏好的影响,碳减排政策可以有效减少制造业对环境的总体影响。将单位碳税与碳交易价格进行比较,碳交易政策最有利于环境保护,实现了OEM和IR的经济效益和环境效益的双赢。因此,这种情况有利于现有再制造业务的可持续增长。因此,政府要求补贴以提高再制造产品的质量和提高IR在市场上的竞争力变得不那么明显。
    To accelerate achieving carbon neutrality, the promotion of low-carbon development in the manufacturing industry has been facilitated by the government\'s implementation of policies such as carbon taxation and carbon emissions trading. These measures have been put in place to reduce carbon emissions and enhance sustainability within the manufacturing sector. Remanufacturing is an important direction for the low-carbon transformation of enterprises, and improving remanufactured product quality is crucial to the sustainability of remanufacturing enterprises. To elucidate the influence of policies aimed at reducing carbon emissions on the quality of remanufactured products, we developed a game model involving three key players: the original equipment manufacturer (OEM), the remanufacturer (IR), and retailers. This model was constructed based on the heterogeneous consumer demand for both new and remanufactured products. The study delved into the effects of various governmental policies aimed at reducing carbon emissions on the quality-related decisions made by remanufacturing enterprises. Our primary focus was on the implementation of two specific policies: a high-level carbon taxation policy and a carbon trading policy characterized by elevated carbon pricing. These policies create a favorable environment for remanufacturers (IR) to enhance the quality of their products. The sales of remanufactured products are influenced by the purchasing preferences of consumers, and carbon reduction policies can be effective in reducing the total environmental impact of manufacturing. Carbon trading policy is most conducive to environmental protection and achieves a win-win situation for economic and environmental benefits for OEMs and IRs when the carbon tax per unit is compared with the carbon trading price. Hence, this situation is favorable for the sustainable growth of existing remanufacturing businesses. Consequently, the government\'s requirement for subsidies to enhance the quality of remanufactured products and boost the competitiveness of IRs in the market becomes less pronounced.
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  • 文章类型: Journal Article
    糖基化在确定治疗性抗体的质量和功效中起着至关重要的作用。这需要一个彻底的分析和监控过程,以确保在制造过程中一致的产品质量。在这项研究中,我们介绍了一种定制设计的凝集素微阵列,其中包含9种不同的凝集素:rPhoSL,rOTH3,RCA120,rMan2,MAL_I,rPSL1a,PHAE,rMOA,PHAL。这些凝集素已被特异性地定制为选择性地结合在治疗性IgG抗体中发现的常见N-聚糖表位。通过利用完整的糖蛋白样本,我们的九凝集素微阵列为快速聚糖分析提供了一个高通量平台,能够对糖基化模式进行比较分析。我们的结果证明了这种微阵列在评估各种生产批次或生物仿制药和创新产品之间的糖基化方面的实际实用性。这种能力使人们能够在开发和生产治疗性抗体时做出明智的决策。
    Glycosylation plays a crucial role in determining the quality and efficacy of therapeutic antibodies. This necessitates a thorough analysis and monitoring process to ensure consistent product quality during manufacturing. In this study, we introduce a custom-designed lectin microarray featuring nine distinct lectins: rPhoSL, rOTH3, RCA120, rMan2, MAL_I, rPSL1a, PHAE, rMOA, and PHAL. These lectins have been specifically tailored to selectively bind to common N-glycan epitopes found in therapeutic IgG antibodies. By utilizing intact glycoprotein samples, our nine-lectin microarray provides a high-throughput platform for rapid glycan profiling, enabling comparative analysis of glycosylation patterns. Our results demonstrate the practical utility of this microarray in assessing glycosylation across various manufacturing batches or between biosimilar and innovator products. This capacity empowers informed decision-making in the development and production of therapeutic antibodies.
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  • 文章类型: Review
    新鲜的绿叶蔬菜(FGLVs)可以在花园中新鲜食用,也可以通过很少的简单加工步骤来食用。出于这个原因,在许多国家,新鲜产品消费带来的食源性疾病优先考虑开发新的可靠技术,以减少与食品有关的流行病。冷等离子体(CP)被认为是一种可持续的绿色加工方法,可以使目标微生物失活,而不会在加工过程中引起明显的温度升高。这篇综述概述了CP处理的FGLV商业化潜力的最新进展,专注于特定领域,如微生物灭活和CP对产品质量的影响。CP的效果根据等离子体的功率而不同,频率,气体流量,申请时间,电离气体成分,电极之间的距离和压力,以及产品的特点。除了微生物净化,CP为延长易腐和短保质期产品的保质期提供了巨大的潜力。此外,还对积极参与CP研发和专利申请(2016-2022年)的组织进行了分析。
    Fresh green leafy vegetables (FGLVs) are consumed either garden-fresh or by going through very few simple processing steps. For this reason, foodborne diseases that come with the consumption of fresh products in many countries have prioritized the development of new and reliable technologies to reduce food-related epidemics. Cold plasma (CP) is considered one of the sustainable and green processing approaches that inactivate target microorganisms without causing a significant temperature increase during processing. This review presents an overview of recent developments regarding the commercialization potential of CP-treated FGLVs, focusing on specific areas such as microbial inactivation and the influence of CP on product quality. The effect of CP differs according to the power of the plasma, frequency, gas flow rate, application time, ionizing gases composition, the distance between the electrodes and pressure, as well as the characteristics of the product. As well as microbial decontamination, CP offers significant potential for increasing the shelf life of perishable and short-shelf-life products. In addition, organizations actively involved in CP research and development and patent applications (2016-2022) have also been analyzed.
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