novel technologies

新技术
  • 文章类型: Journal Article
    随着对可持续食品来源的需求不断增加,用于鱼油提取的鱼息原料的利用受到了人们的关注。酶法水解是一种高效提取高附加值化合物的方法,但其有效性可以通过高压处理(HPP)增强。然而,HPP可以诱导脂质氧化,影响油的质量。这项研究旨在评估经HPP预处理的虹鳟鱼(Oncorhynchusmykiss)和大西洋鲑鱼(Salmosalar)剩余原料的混合物酶水解后获得的鱼油的质量。在酶水解之前测试了六个预处理;200MPa×4分钟,200MPa×8min,400MPa×4min,400MPa×8min,600MPa×4min,600MPa×8min。分析油样的脂质氧化参数,游离脂肪酸含量,脂肪酸组成,颜色变化超过8周。结果证实,HPP可能诱导脂质氧化,并揭示了HPP参数对脂质氧化的显着影响,更高的压力导致氧化增加。脂肪酸组成因样品而异,但没有受到HPP的实质性影响。
    Utilization of fish rest raw material for fish oil extraction has received interest with the increasing demand for sustainable food sources. Enzymatic hydrolysis is an efficient method for the extraction of value-added compounds, but its effectiveness may be enhanced by high-pressure processing (HPP). However, HPP can induce lipid oxidation, affecting the quality of the oil. This study aimed to evaluate the quality of fish oil obtained after enzymatic hydrolysis of a mixture of rainbow trout (Oncorhynchus mykiss) and Atlantic salmon (Salmo salar) rest raw material pretreated by HPP. Six pretreatments were tested prior to enzymatic hydrolysis; 200 MPa × 4 min, 200 MPa × 8 min, 400 MPa × 4 min, 400 MPa × 8 min, 600 MPa × 4 min, and 600 MPa × 8 min. The oil samples were analyzed for lipid oxidation parameters, free fatty acid content, fatty acid composition, and color changes over 8 weeks. The results confirmed that HPP may induce lipid oxidation and revealed significant influence of HPP parameters on lipid oxidation, with higher pressures leading to increased oxidation. Fatty acid composition varied among samples, but it was not substantially affected by HPP.
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  • 文章类型: Journal Article
    新兴技术越来越多地用于环境公民科学项目。这种整合为科学家和参与者提供了好处和机会。公民科学可以支持大规模,对物种发生的长期监测,行为和互动。同时,技术可以促进参与者的参与,无论先前存在的分类专业知识或经验,并允许收集新类型的数据。然而,技术也可能带来挑战,可能会增加财务成本,需要技术专长或要求培训参与者。技术还可以减少人们与自然的直接参与和接触。从这个角度来看,我们讨论了当前技术如何刺激公民科学项目的增加,以及在公民科学中实施新兴技术如何增强科学影响和公众参与。我们展示了技术如何充当(I)当前公民科学和监测工作的促进者,(二)新的研究机会的推动者,和(iii)科学的转换器,政策和公众参与,但也可能成为(iv)参与的抑制剂,公平和科学严谨。技术发展迅速,有望为公民科学和昆虫监测提供许多令人兴奋的机会,但是当我们抓住这些机会的时候,我们必须对潜在风险保持警惕。本文是“迈向全球昆虫生物多样性监测工具包”主题的一部分。
    Emerging technologies are increasingly employed in environmental citizen science projects. This integration offers benefits and opportunities for scientists and participants alike. Citizen science can support large-scale, long-term monitoring of species occurrences, behaviour and interactions. At the same time, technologies can foster participant engagement, regardless of pre-existing taxonomic expertise or experience, and permit new types of data to be collected. Yet, technologies may also create challenges by potentially increasing financial costs, necessitating technological expertise or demanding training of participants. Technology could also reduce people\'s direct involvement and engagement with nature. In this perspective, we discuss how current technologies have spurred an increase in citizen science projects and how the implementation of emerging technologies in citizen science may enhance scientific impact and public engagement. We show how technology can act as (i) a facilitator of current citizen science and monitoring efforts, (ii) an enabler of new research opportunities, and (iii) a transformer of science, policy and public participation, but could also become (iv) an inhibitor of participation, equity and scientific rigour. Technology is developing fast and promises to provide many exciting opportunities for citizen science and insect monitoring, but while we seize these opportunities, we must remain vigilant against potential risks. This article is part of the theme issue \'Towards a toolkit for global insect biodiversity monitoring\'.
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  • 文章类型: Editorial
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  • 文章类型: Journal Article
    抗氧化肽是目前食品科学研究的热点,制药,和化妆品。在不同的领域,筛选,活动评估,机制,抗氧化肽的应用是研究的关键领域。在这些主题中,抗氧化肽的有效筛选处于前沿研究的前沿。为此,新技术的高效筛选显著加快了研究进程,逐渐取代传统方法。经过对新型抗氧化肽的筛选和鉴定,耗时的活动评估是另一个不可或缺的过程,尤其是在体内模型中。细胞和啮齿动物模型已广泛用于活动评估,而非啮齿动物模型提供了一个有效的解决方案,即使具有高通量筛选的潜力。同时,分子机制的进一步研究可以阐明活性的本质,这与几个信号通路有关,包括Keap1-Nrf2/ARE,线粒体依赖性凋亡,TGF-β/SMAD,AMPK/SIRT1/PGC-1α,PI3K/Akt/mTOR,和NF-κB。最后但并非最不重要的,抗氧化肽在食品制造中具有广泛的应用,治疗,和化妆品行业,这需要系统的审查。本文综述了抗氧化肽的高效筛选新技术,用一个新的愿景分类。广泛的活性评估测定,包括细胞模型,以及啮齿动物和非啮齿动物模型,以全面的方式提供。此外,结合具体案例分析了分子机制的最新进展。最后,抗氧化肽在食品生产中的应用,治疗,并对化妆品进行了系统综述。
    Antioxidant peptides are currently a hotspot in food science, pharmaceuticals, and cosmetics. In different fields, the screening, activity evaluation, mechanisms, and applications of antioxidant peptides are the pivotal areas of research. Among these topics, the efficient screening of antioxidant peptides stands at the forefront of cutting-edge research. To this end, efficient screening with novel technologies has significantly accelerated the research process, gradually replacing the traditional approach. After the novel antioxidant peptides are screened and identified, a time-consuming activity evaluation is another indispensable procedure, especially in in vivo models. Cellular and rodent models have been widely used for activity evaluation, whilst non-rodent models provide an efficient solution, even with the potential for high-throughput screening. Meanwhile, further research of molecular mechanisms can elucidate the essence underlying the activity, which is related to several signaling pathways, including Keap1-Nrf2/ARE, mitochondria-dependent apoptosis, TGF-β/SMAD, AMPK/SIRT1/PGC-1α, PI3K/Akt/mTOR, and NF-κB. Last but not least, antioxidant peptides have broad applications in food manufacture, therapy, and the cosmetics industry, which requires a systematic review. This review introduces novel technologies for the efficient screening of antioxidant peptides, categorized with a new vision. A wide range of activity evaluation assays, encompassing cellular models, as well as rodent and non-rodent models, are provided in a comprehensive manner. In addition, recent advances in molecular mechanisms are analyzed with specific cases. Finally, the applications of antioxidant peptides in food production, therapy, and cosmetics are systematically reviewed.
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  • 文章类型: Journal Article
    奶粉是一种方便,用于各种食品的货架稳定的食品成分。然而,病原菌可以存在并在长时间储存期间存活,导致食源性疾病和产品召回的爆发。射频(RF)加热是一种适用于奶粉散装处理的加工技术,针对微生物灭活。这项研究调查了两种奶粉中鼠伤寒沙门氏菌和单核细胞增生李斯特菌的RF灭活;脱脂奶粉和全脂奶粉。具体来说,目的是(i)检查粉末的成分对细菌灭活的影响,(ii)评估具有不同革兰氏性质(革兰氏阳性和革兰氏阴性)的细菌的响应,以及(iii)验证屎肠球菌作为两种微生物的替代物用于特定RF过程。为了专门检查RF的影响,使用非等温温度曲线,仅使用不同的RF能量水平将产品加热到目标温度。将具有Bigelow型温度依赖性的对数线性模型拟合到实验数据。与单核细胞增多杆菌相比,鼠伤寒杆菌对射频治疗的敏感性较低,显示更高的失活率(k)和更高的亚致死性损伤百分比。对于全脂奶粉中的两种微生物也观察到更高的k,表明奶粉中脂肪含量的增加和乳糖和蛋白质含量的降低对两种病原体的微生物存活都有不利影响。替代微生物屎肠球菌成功地验证了两种微生物对RF处理的微生物反应。总的来说,低加热速率的RF-only过程成功地将脱脂奶粉和全脂奶粉中的两种食源性病原体灭活了4log(CFU/g)。
    Milk powder is a convenient, shelf-stable food ingredient used in a variety of food products. However, pathogenic bacteria can be present and survive during prolonged storage, leading to outbreaks of foodborne diseases and product recalls. Radio frequency (RF) heating is a processing technology suitable for bulk treatment of milk powder, aiming at microbial inactivation. This study investigates the RF inactivation of Salmonella Typhimurium and Listeria monocytogenes in two types of milk powder; skimmed and whole milk powder. Specifically, the aims were to (i) examine the influence of the powder\'s composition on bacterial inactivation, (ii) evaluate the response of bacteria with different Gram properties (Gram positive and Gram negative) and (iii) verify the use of Enterococcus faecium as a surrogate for the two microorganisms for the specific RF process. In order to examine exclusively the influence of RF, a non-isothermal temperature profile was used, employing solely different RF energy levels to heat the product to the target temperatures. A log-linear model with a Bigelow-type temperature dependency was fitted to the experimental data. S. Typhimurium was less susceptible to RF treatments in comparison to L.monocytogenes, demonstrating a higher inactivation rate (k) and higher percentage of sublethal injury. A higher k was also observed for both microorganisms in the whole milk powder, indicating that the increased fat content and decreased levels of lactose and protein in the milk powder had an adverse impact on the microbial survival for both pathogens. The surrogate microorganism E. faecium successfully validated the microbial response of the two microorganisms to RF treatments. In general, a low heating rate RF-only process was successful in inactivating the two foodborne pathogens in skimmed and whole milk powder by 4 log(CFU/g).
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  • 文章类型: Journal Article
    在体外受精(IVF)期间使用新技术选择胚胎有可能提高健康孩子的怀孕和出生机会。然而,重要的是要意识到过早实施这些技术可能带来的潜在风险和意外后果。本文讨论了围绕在IVF中使用新型胚胎选择技术的道德考虑,包括越来越多的基因检测和其他技术,并认为使用这些技术优先移植胚胎是可以接受的,但是基于未经证实的进步丢弃胚胎不是。提供了几个历史例子,这证明了可能的危害,怀孕的总体机会可能会减少,有些病人可能完全错过了亲子关系。我们强调需要谨慎和平衡的方法,以确保这些技术的好处大于任何潜在的危害。我们还强调了患者在生殖决策中的自主权,特别是当利用新技术获得的信息不精确时。
    The use of novel technologies in the selection of embryos during in vitro fertilisation (IVF) has the potential to improve the chances of pregnancy and birth of a healthy child. However, it is important to be aware of the potential risks and unintended consequences that may arise from the premature implementation of these technologies. This article discusses the ethical considerations surrounding the use of novel embryo selection technologies in IVF, including the growing uptake of genetic testing and others, and argues that prioritising embryos for transfer using these technologies is acceptable, but discarding embryos based on unproven advances is not. Several historical examples are provided, which demonstrate possible harms, where the overall chance of pregnancy may have been reduced, and some patients may have missed out on biological parenthood altogether. We emphasise the need for caution and a balanced approach to ensure that the benefits of these technologies outweigh any potential harm. We also highlight the primacy of patients\' autonomy in reproductive decision-making, especially when information gained by utilising novel technologies is imprecise.
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  • 文章类型: Journal Article
    浆果被认为是美味和健康的水果,可以预防或延缓一些归因于氧化应激和炎症的慢性疾病。浆果热量低,含有多种生物活性植物化学物质,抗氧化剂,膳食纤维,和维生素。这篇综述深入研究了新鲜浆果和浆果产品作为食品的主要特征以及与其生产相关的技术。描述了加工操作和相关变量对生物活性成分和抗氧化剂的主要影响。这篇综述批判性地讨论了为什么一些基于体外抗氧化剂数据以及临床研究和干预试验的健康声明难以评估。该评论表明,浆果的有益健康影响来自丰富的酚类成分的复杂混合物的多因素组合,抗氧化剂,以及它们的代谢产物与其他营养物质如纤维和维生素协同作用或附加作用,并可能通过调节肠道微生物群。食品科学与技术年度评论的预计最终在线出版日期,第15卷是2024年4月。请参阅http://www。annualreviews.org/page/journal/pubdates的订正估计数。
    Berries are highly regarded as flavorful and healthy fruits that may prevent or delay some chronic diseases attributed to oxidative stress and inflammation. Berries are low in calories and harbor diverse bioactive phytochemicals, antioxidants, dietary fibers, and vitamins. This review delves into the main characteristics of fresh berries and berry products as foods and the technologies associated with their production. The main effects of processing operations and related variables on bioactive components and antioxidants are described. This review critically discusses why some health claims based on in vitro antioxidant data and clinical studies and intervention trials are difficult to assess. The review suggests that the beneficial health effects of berries are derived from a multifactorial combination of complex mixtures of abundant phenolic components, antioxidants, and their metabolites acting synergistically or additively with other nutrients like fibers and vitamins and possibly by modulating the gut microbiota.
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  • 文章类型: Journal Article
    有大量关于消费者接受转基因食品的文献可以追溯到近三十年前,但是,很少有研究调查对特定转基因属性的支持如何有助于对新植物技术的普遍支持。此外,关于支持如何随着时间的推移而变化的信息很少。使用美国州(佛蒙特州)2018年至2023年的调查数据(n=3101),我们分析了随着时间的推移对各种GM属性的支持变化。有三个主要发现。首先,在支持各种转基因属性方面有走向中立的运动,但反对派仍在继续。第二,支持不同的GM属性存在可变性。人们最支持(最少反对)转基因属性,改善植物群(植物健康或耐旱性),最反对(最不支持)影响动物(特别是鱼类)的属性。第三,多元回归表明,对各个转基因属性的评估有助于在农业生产中使用转基因技术的总体支持水平。
    There is a large literature about consumer acceptance of GM foods dating back almost three decades, but there are fewer studies that investigate how support for specific GM attributes contribute to general support for novel plant technologies. In addition, there is little information on how support has changed over time. Using survey data from 2018 to 2023 in a U.S. State (Vermont) (n = 3101), we analyze changes in support for a variety of GM attributes over time. There are three major findings. First, there is movement toward neutrality in support for various GM attributes, but opposition continues. Second, there is variability in support for different GM attributes. People are most supportive (least opposed) to GM attributes that improve flora (plant health or drought tolerance), and most opposed (least supportive) of attributes that impact fauna (specifically fish). Third, multivariate regression reveals that assessments of individual GM attributes contribute to levels of overall support of the use of GM technologies in agricultural production.
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  • 文章类型: Journal Article
    目的:近年来,已经为治疗1型糖尿病(T1DM)孕妇提供了多种治疗和管理机会。然而,评估这些不同方法在代谢控制和新生儿结局方面是否有特定优势/劣势的分析仍然有限.比较不同基础胰岛素对T1DM孕妇的代谢控制和新生儿结局(NPH与模拟),胰岛素给药方式[每日多次注射(MDI)与连续皮下胰岛素输注(CSII)]和葡萄糖监测系统[自我监测血糖(SMBG)与实时/间歇扫描连续葡萄糖监测(rtCGM/isCGM)]。
    方法:回顾性分析136例T1DM孕妇的代谢数据和新生儿结局(MDI为76%,基于NPH(51%)或类似物(49%);CSII的24%;使用rtCGM/isCGM的24%),在2008年至2020年期间进行管理,比较不同的治疗方法。
    结果:在接受不同基础胰岛素治疗的妇女中,代谢数据和新生儿结局具有可比性。CSII计划怀孕的妇女更频繁(82vs.60%;p=0.043),并且孕前HbA1c更好(52±5vs.60±13mmol/mol;p=0.044)和孕早期HbA1c(48±4vs.51±8mmol/mol;p=0.047),分别。使用rtCGM/isCGM的女性的孕前和孕早期HbA1c也较低(53±8vs.58±13mmol/mol;p=0.027和46±5vs.51±7mmol/mol;分别为p=0.034)。在整个队列中,LGA风险与妊娠晚期HbA1c直接相关(相关系数0.335,p=0.001),与妊娠晚期HbA1c目标(≤6%[<42mmol/mol])的实现负相关(相关系数-0.367,p<0.001)。
    结论:胰岛素类似物治疗没有显著改变T1DM妇女的代谢控制和新生儿结局,而CSII和rtCGM/isCGM可以优化孕前和孕早期的血糖控制。无论治疗管理如何,妊娠晚期HbA1c仍然是LGA的最大危险因素.
    OBJECTIVE: Over the recent years multiple therapeutic and management opportunities have been made available to treat pregnant women with Type 1 diabetes (T1DM). However, analyses assessing whether these different approaches may have any specific advantage/disadvantage in metabolic control and neonatal outcomes is still limited. The aim of this study was to compare metabolic control and neonatal outcomes in pregnant women with T1DM among different basal insulins (NPH vs. analogue), insulin administration ways [Multiple Daily Injections (MDI) vs. Continuous Subcutaneous Insulin Infusion (CSII)] and glucose monitoring systems [Self-Monitoring of Blood Glucose (SMBG) vs. real-time/intermittently scanned Continuous Glucose Monitoring (rtCGM/isCGM)].
    METHODS: A retrospective analysis on metabolic data and neonatal outcomes of 136 T1DM pregnant women (76% on MDI, based on NPH (51%) or analogue (49%); 24% on CSII; 24% using rtCGM/isCGM), managed between 2008 and 2020, was performed, comparing different therapeutic approaches.
    RESULTS: Metabolic data and neonatal outcomes were comparable among women treated with different basal insulins. Women on CSII planned their pregnancy more frequently (82 vs. 60%; p = 0.043) and had better pregestational HbA1c (52 ± 5 vs. 60 ± 13 mmol/mol; p = 0.044) and first trimester HbA1c (48 ± 4 vs. 51 ± 8 mmol/mol; p = 0.047). Pregestational and first trimester HbA1c were also lower in women using rtCGM/isCGM (53 ± 8 vs. 58 ± 13 mmol/mol; p = 0.027 and 46 ± 5 vs. 51 ± 7 mmol/mol; p = 0.034, respectively). In the whole cohort, LGA risk was directly correlated to HbA1c at third trimester (correlation coefficient: 0.335, p = 0.001) and inversely correlated to the achievement of HbA1c target (≤6% [<42 mmol/mol]) at third trimester (correlation coefficient: - 0.367, p < 0.001).
    CONCLUSIONS: Treatment with insulin analogs didn\'t significantly change metabolic control and neonatal outcomes in T1DM women, while CSII and rtCGM/isCGM can optimize preconception and first trimester pregnancy glycemic control. Irrespective of the therapeutic management, third trimester HbA1c remains the strongest risk factor for LGA.
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  • 文章类型: Journal Article
    组蛋白脱乙酰酶(HDAC)催化组蛋白和非组蛋白中乙酰-1-赖氨酸侧链的水解,这是人类表观遗传调控的关键。靶向HDAC已成为治疗各种类型癌症的有希望的策略,包括骨髓瘤和恶性血液病.目前,许多靶向HDACs的小分子抑制剂正在临床试验中被积极研究。尽管它们在癌症治疗中具有潜在的功效,HDAC抑制剂存在多向选择性和临床前耐药性问题。因此,基于尖端药物化学技术开发新型抑制剂对于克服这些局限性和改善临床结果至关重要.该手稿对HDAC在癌症中的特性和生物学功能进行了广泛的概述,概述了临床HDAC抑制剂的发展现状和局限性,并分析了一系列应用的创新药物化学技术。这些技术包括选择性抑制剂,双靶点抑制剂,蛋白水解靶向嵌合体,和蛋白质-蛋白质相互作用抑制剂。
    Histone deacetylases (HDACs) catalyze the hydrolysis of acetyl-l-lysine side chains in histones and non-histones, which are key to epigenetic regulation in humans. Targeting HDACs has emerged as a promising strategy for treating various types of cancer, including myeloma and hematologic malignancies. At present, numerous small molecule inhibitors targeting HDACs are actively being investigated in clinical trials. Despite their potential efficacy in cancer treatment, HDAC inhibitors suffer from multi-directional selectivity and preclinical resistance issues. Hence, developing novel inhibitors based on cutting-edge medicinal chemistry techniques is essential to overcome these limitations and improve clinical outcomes. This manuscript presents an extensive overview of the properties and biological functions of HDACs in cancer, provides an overview of the current state of development and limitations of clinical HDAC inhibitors, and analyzes a range of innovative medicinal chemistry techniques that are applied. These techniques include selective inhibitors, dual-target inhibitors, proteolysis targeting chimeras, and protein-protein interaction inhibitors.
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