Multiple factor analysis

多因素分析
  • 文章类型: Journal Article
    文化是众所周知的食物选择的驱动力,因此,它也可能影响食物配对偏好。已经从不同的方法研究了食物配对;然而,跨文化研究很少。这项工作探索了使用投影映射(PM)创建食品-饮料组合图的食品和饮料配对。四个国家(墨西哥,阿根廷,法国,和挪威),三十种食物,选择了六种饮料。PM是通过每个国家的在线研究进行的。参与者被要求将食物和饮料映射在一起,遵循食物和饮料更紧密地结合在一起代表一个很好的组合的指示。每个产品的坐标由国家通过多因素分析(MFA)进行分析。每个MFA的前四个因素用于执行RV系数,以测试国家之间食品-饮料配对的相似性。最后,对每个MFA的饮料坐标进行k均值聚类。PM提供了代表每个国家/地区的食品和饮料配对的地图,其中食品-饮料之间的接近度代表了消费者的良好组合。国家之间的RV系数很低,显示不同国家的食品饮料搭配并不相似,证明了饮食组合中的文化效应。k均值聚类的结果显示了国家之间的一些异同。总的来说,食品和饮料的配对与PM进行了有效的探索,在文化中发现了一些差异和相似之处。
    Culture is a well-known driver of food choices, and therefore, it could also impact food pairing preferences. Food pairing has been studied from different approaches; however, little cross-cultural research has been done. This work explored food and beverage pairing using projective mapping (PM) to create maps of food-beverage combinations. Four countries (Mexico, Argentina, France, and Norway), thirty foods, and six beverages were selected. PM was carried out through an online study in each country. Participants were asked to map foods together with beverages following the instruction that foods and beverages closer together represented a good combination. The coordinates of each product were analyzed through Multiple Factorial Analyses (MFA) by countries. The first four factors of each MFA were used to perform RV coefficients to test similarities in food-beverage pairings between the countries. Finally, a k-means clustering was performed on the beverage coordinates of each MFA. PM provided maps representing food and beverage pairings for each country in which the proximity between food-beverages represented a good combination according to consumers. RV coefficients between countries were low, showing that food-beverage pairings were not similar across countries, evidencing the cultural effect in food-drink combinations. Results from the k-means clustering showed some similarities and differences between countries. In general, the food-beverage pairing was effectively explored with PM, from which several differences and similarities were found within cultures.
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  • 文章类型: Journal Article
    风味改变是影响蘑菇保存过程中品质的关键因素。通过结合电子鼻研究了新鲜猴头菌在电子束产生的X射线照射下挥发性成分的动态变化,顶空-气相色谱-离子迁移谱(HS-GC-IMS),顶空固相微萃取气相色谱-质谱联用(HS-SPME-GC-MS)。电子鼻分析在储存时间内实现了所有治疗的快速区分。通过HS-GC-IMS和HS-SPME-GC-MS鉴定了65和73种挥发性有机化合物(VOCs),分别。其中,1-octen-3-ol,1-octen-3-1,筛选出2-辛酮作为特征VOCs,哪些内容在储存期间下降。而(E)-2-辛烯的含量,(E)-2-壬烯,1-辛醇增加。风味特征从明显的蘑菇和花香气味变为强烈的酒精和脂肪气味。值得注意的是,一kGy辐照在储存后仍然有更多的挥发物和更浓密的蘑菇气味。多变量分析进一步证实,1.0kGy辐照有助于金丝雀采后贮藏期间的整体香气保留。
    Flavor alteration is a crucial factor affecting the quality of mushrooms during preservation. The dynamic variations of volatile profiles of fresh Hericium erinaceus with electron-beam generated X-ray irradiation were investigated by combining E-nose, headspace-gas chromatography-ion mobility spectrometry (HS-GC-IMS), and headspace solid-phase microextraction gas chromatography-mass spectrometry (HS-SPME-GC-MS). E-nose analysis achieved rapid discrimination in all treatments over storage time. 65 and 73 volatile organic compounds (VOCs) were identified by HS-GC-IMS and HS-SPME-GC-MS, respectively. Thereinto, 1-octen-3-ol, 1-octen-3-one, and 2-octanone were screened out as the characteristic VOCs, which contents declined during storage. While the contents of (E)-2-octenal, (E)-2-nonenal, and 1-octanol increased. The flavor profile changes from distinct mushroom and floral odor to an intense alcohol and fatty odor. Notably, one-kGy irradiation remained more volatiles and denser mushroom odor after storage. Multivariate analysis further confirmed that 1.0 kGy irradiation contributed to the overall aroma retention during postharvest storage of H. erinaceus.
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  • 文章类型: Journal Article
    辣木叶是生物活性化合物的丰富来源,具有潜在的健康益处,包括抗氧化剂和抗炎药。加压液体萃取(PLE)是一种有效地从天然来源中提取有价值化合物的有前途的技术。在这项研究中,我们旨在优化PLE参数,如温度,提取持续时间,和压力,最大化生物活性化合物(多酚,黄酮类化合物,和抗坏血酸)从油茶叶中获得,并评估其抗氧化和抗炎活性。根据这项研究的结果,达到的最大总多酚含量为24.10mg没食子酸当量(GAE)/g干重(dw),总黄酮含量增加至19.89mg芦丁当量(RtE)/gdw。此外,HPLC-DAD分析后,新绿原酸和绿原酸,儿茶素和表儿茶素,芦丁,和那鲁鲁丁进行了鉴定和量化。就最佳抗坏血酸含量而言,它被发现是4.77毫克/克dw。通过三种不同的方法评估抗氧化活性:铁还原抗氧化能力(FRAP),DPPH方法,和抗过氧化氢活性(AHPA)方法,产生124.29μmol抗坏血酸当量(AAE)/gdw,131.28μmolAAE/gdw,和229.38μmolAAE/gdw值,分别。最后,白蛋白变性抑制为37.54%。这些发现强调了PLE作为一种有效的提取方法的潜力,可以从油菌叶中制备具有最大生物活性化合物含量的提取物。
    Moringa oleifera leaves are rich sources of bioactive compounds with potential health benefits, including antioxidants and anti-inflammatory agents. Pressurized liquid extraction (PLE) stands out as a promising technique for effectively extracting valuable compounds from natural sources. In this study, we aimed to optimize PLE parameters, such as temperature, extraction duration, and pressure, to maximize bioactive compound (polyphenols, flavonoids, and ascorbic acid) yield from M. oleifera leaves and evaluate their antioxidant and anti-inflammatory activities. According to the outcomes of this research, the maximum achieved total polyphenol content was 24.10 mg gallic acid equivalents (GAE)/g of dry weight (dw), and the total flavonoid content was increased up to 19.89 mg rutin equivalents (RtE)/g dw. Moreover, after HPLC-DAD analysis, neochlorogenic and chlorogenic acids, catechin and epicatechin, rutin, and narirutin were identified and quantified. As far as the optimum ascorbic acid content is concerned, it was found to be 4.77 mg/g dw. The antioxidant activity was evaluated by three different methods: ferric reducing antioxidant power (FRAP), the DPPH method, and the anti-hydrogen peroxide activity (AHPA) method, resulting in 124.29 μmol ascorbic acid equivalent (AAE)/g dw, 131.28 μmol AAE/g dw, and 229.38 μmol AAE/g dw values, respectively. Lastly, the albumin denaturation inhibition was found to be 37.54%. These findings underscore the potential of PLE as an efficient extraction method for preparing extracts from M. oleifera leaves with the maximum content of bioactive compounds.
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  • 文章类型: Journal Article
    Sensometrics使用统计数据和各种方法评估消费者研究中的感官观点。这项研究使用感觉统计方法评估了消费者对全部适用(CATA)和全部适用率(RATA)评估中的热和冷发芽小麦饮料的反应,包括Cochran的Q测试,惩罚提升分析,和多因素分析。用不同量的发芽小麦(HB_1:0.8g/100mL,HB_2:2g/100mL,和HB_3:4g/100mL),而冷饮料(CB)是使用不同浓度的冷却的沸腾发芽小麦制成的(CB_1:25g/L,CB_2:50g/L,和CB_3:75g/L)。CATA研究结果表明,消费者更喜欢HB_1和CB_1,因为他们表达了与喜好相关的感官特征,包括“大麦茶味”,\“整洁的味道\”,和“坚果味道”,而“苦涩的味道”,\“闷的味道\”,和“涩味”是不可取的属性。\"褐变指数\",“大麦茶味”,和“坚果味”在有利和不利评分方面均显示出显着差异(p<0.05)。总的来说,CB_1引起明显的味道和气味,负面情绪较少。这些发现证明了感测器方法与CATA和RATA分析相结合的有用性,可以更容易地解释消费者对新食品的感官知觉。
    在线版本包含补充材料,可在10.1007/s13197-023-05884-z获得。
    Sensometrics assesses sensory perspectives in consumer research using statistics and various methodologies. This study evaluated consumer responses to hot and cold germinated-wheat beverages in check-all-that-apply (CATA) and rate-all-that-apply (RATA) assessments using sensometric statistical approaches, including Cochran\'s Q test, penalty-lift analysis, and multiple factor analysis. Hot beverages (HB) were prepared by infusion using different amounts of germinated wheat (HB_1: 0.8 g/100 mL, HB_2: 2 g/100 mL, and HB_3: 4 g/100 mL), while cold beverages (CB) were made using cooled boiled germinated wheat with varying concentrations (CB_1: 25 g/L, CB_2: 50 g/L, and CB_3: 75 g/L). Results of the CATA study suggested that consumers preferred HB_1 and CB_1 because they expressed the sensory characteristics associated with liking, including \"barley tea flavor\", \"neat taste\", and \"nutty taste\", while \"bitterish taste\", \"stuffy taste\", and \"astringent taste\" were undesirable attributes. \"Browning index\", \"barley tea odor\", and \"nutty taste\" showed significant differences (p < 0.05) in both favorable and unfavorable rating scores. Overall, CB_1 elicited a clear taste and odor with fewer negative emotions. These findings demonstrate the usefulness of the sensometric approach combined with CATA and RATA analyses to obtain more easily interpretable results on the sensory perception of consumers to new food products.
    UNASSIGNED: The online version contains supplementary material available at 10.1007/s13197-023-05884-z.
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  • 文章类型: Journal Article
    感官分析对于优化各个领域的经验至关重要,包括食物,化妆品,和产品设计。传统方法可能是低效和不精确的。本研究通过将虚拟现实(VR)技术与气味识别技术相结合,引入了一种新颖的方法。目的是调查食品的视觉表现是否会影响气味感知。有限的研究探索了VR在气味识别中的应用,这在改变食物环境设置时尤其重要。开发了一个虚拟感官实验室来模拟MATE的感官室。60名与会者,所有的同学,参与了这项研究。该方法提供了一种潜在的方法来简化气味识别并减少感官分析中的人类偏见。总之,VR技术与气味识别的结合为感官分析提供了一种新的方法论方法,气味和曝光都受到环境或图像的影响。这个概念深入研究了跨模态对应关系以及感官线索在塑造我们在VR环境中对食物气味的感知中的作用。
    Sensory analysis is crucial for optimizing experiences in various fields, including food, cosmetics, and product design. Traditional methods can be inefficient and imprecise. This study introduces a novel approach by blending Virtual Reality (VR) technology with scent identification techniques. The aim is to investigate whether the visual representation of food products affects scent perception. Limited research has explored the use of VR in scent identification, which is especially relevant when altering the food environment setting. A virtual sensory laboratory was developed to mimic MATE\'s sensory booth. Sixty participants, all MATE students, were involved in this study. This method offers a potential means to streamline scent identification and reduce human bias in sensory analysis. In summary, the combination of VR technology and scent identification presents a fresh methodological approach to sensory analysis, where both scent and exposure are influenced by the environment or imagery. This concept delves into cross-modal correspondences and the role of sensory cues in shaping our perception of food odours within the VR setting.
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  • 文章类型: Journal Article
    虚拟现实(VR)技术在各个领域得到了广泛的关注,包括对卫生专业人员的教育,感官科学,心理学,和消费者研究。本文的第一个目的是探索在VR中进行的感觉分析中情感参与的自我评估经验。积极和消极影响时间表(PANAS)是一种广泛使用的自我报告措施,可评估积极和消极的情感状态。VR感官分析涉及身临其境的使用,互动式,和多感官环境来评估感官知觉和情绪反应。通过综合相关文献,本文提供了关于VR对情感状态的影响的见解,VR在激发情绪方面的有效性,以及PANAS在VR感官分析中的潜在应用。此外,本文的第二个目的是揭示VR感官评价对参与者情绪状态的影响,因为这对他们的评价有重大影响。结果表明,积极影响的总和增加,消极影响的总和减少。虽然这些结果很有希望,PANAS和VR感官分析之间的关系仍未得到充分探索,有限的研究调查了VR对使用PANAS测量的情感状态的具体影响。需要进一步的研究来更好地了解PANAS在评估VR环境中的情绪反应及其对感官分析的影响方面的潜力。
    Virtual reality (VR) technology has gained significant attention in various fields, including education for health professionals, sensory science, psychology, and consumer research. The first aim of the paper is to explore the self-assessed experience of emotional involvement in sensory analysis performed in VR. The Positive and Negative Affect Schedule (PANAS) is a widely used self-report measure that assesses positive and negative affective states. VR sensory analysis involves the use of immersive, interactive, and multi-sensory environments to evaluate sensory perception and emotional responses. By synthesizing relevant literature, this paper provides insights into the impact of VR on affective states, the effectiveness of VR in eliciting emotions, and the potential applications of the PANAS in VR sensory analysis. Furthermore, the second aim of the paper is to uncover the effect of VR sensory evaluation on the participant\'s emotional states, as it has a significant effect on their evaluations. The results suggest an increase in the sum of positive effects and a decrease in the negative ones. Although these results are promising, the relationship between the PANAS and VR sensory analysis is still underexplored, with limited research investigating the specific effects of VR on affective states measured using the PANAS. Further research is needed to better understand the potential of the PANAS in assessing emotional responses in VR environments and its implications for sensory analysis.
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  • 文章类型: Journal Article
    为了研究从不同前体代谢并有助于冰酒香气感知的化合物的物理化学参数的差异,通过气相色谱-嗅觉法(GC-O)分析结合全面的二维GC和飞行时间质谱(GC×GC-TOFMS)分析鉴定了冰酒中的气味活性物质,并通过计算化学软件计算了这些气味活性化合物的分子描述符。根据它们的分子描述符差异,可以可视化这些气味剂按其前体和嗅觉感知分类的分布模式。结果表明,来自不同前体的气味剂可以根据其分子描述符彼此明显分离,它属于诸如构造索引和基于2D矩阵的描述符之类的块。结果还表明,蜂蜜和煮熟的马铃薯描述或桃子和烟雾描述具有完全不同的分子描述符。这项研究应该有助于未来的研究,涉及基于计算化学的发酵饮料中的香气感知和预测。实际应用:从这项研究中获得的结果可能有助于构建给定产品中各种气味活性化合物的分类系统,并可能为确定气味混合物的不同感知尺寸提供分子解决方案。
    To investigate the differences in physicochemical parameters of compounds that are metabolized from different precursors and contribute to the aroma perception of icewine, odor-active compounds in icewine were identified by gas chromatography-olfactometry (GC-O) analysis combined with comprehensive two-dimensional GC and time-of-flight mass spectrometry (GC  ×  GC-TOFMS) analysis, and the molecular descriptors of these odor-active compounds were calculated by computational chemistry software. The distribution pattern of these odorants classified by their precursors and their olfactory perception was visualized on the basis of their molecular descriptor differences. The results showed that the odorants sourced from different precursors could be clearly separated from each other based on their molecular descriptors, which belonged to blocks such as constitution indices and 2D matrix-based descriptors. The results also showed that honey and cooked potatoe descriptions or peach and smoke descriptions have quite different molecular descriptors. This study should contribute to future research that relates to computational chemistry-based aroma perception and prediction in fermented beverages. PRACTICAL APPLICATION: The results obtained from this study may be useful for the construction of a classification system of various odor-active compounds in a given product and may provide a molecular solution for the determination of different perceptual dimensions of an odor mixture.
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  • 文章类型: Journal Article
    背景:阿尔茨海默病(AD)是一种特殊类型的痴呆,目前缺乏明确的治疗和治愈方法。通过改变一个人的生活方式,可以降低患AD的风险并减轻其严重程度。规律饮食,和饮酒习惯。
    目的:本研究的目的是研究与健康对照组相比,AD患者的日常饮食模式。重点关注营养平衡及其对AD的影响。
    方法:本研究结合了多因素分析(MFA)来评估饮食模式,并采用随机森林(RF)分类器和稀疏逻辑回归(SLR)进行变量重要性分析,以确定与AD显著相关的食物项目。
    结果:MFA揭示了AD患者每日食用加工食品和肉类之间的数据趋势和强相关性(Lg=0.92,RV=0.65)。相比之下,在健康控制(HC)组中,任何每日食用的食物类别均未发现显著相关.肉类馅饼等食品,汉堡包,火腿,香肠,牛肉,辣椒,在RF和SLR分析中,白菜被确定为与AD相关的重要变量。
    结论:来自MFA的发现表明,日常饮食的多样性或平衡可能在AD的发展中起潜在作用。RF和SLR分类显示在加工食品中,尤其是熟食肉类和肉类食品,与AD有关。
    BACKGROUND: Alzheimer\'s disease (AD) is a particular type of dementia that currently lacks a definitive treatment and cure. It is possible to reduce the risk of developing AD and mitigate its severity through modifications to one\'s lifestyle, regular diet, and alcohol-drinking habits.
    OBJECTIVE: The objective of this study is to examine the daily dietary patterns of individuals with AD compared to healthy controls, with a focus on nutritional balance and its impact on AD.
    METHODS: This study incorporated multiple-factor analysis (MFA) to evaluate dietary patterns and employed Random Forest (RF) classifier and Sparse Logistic Regression (SLR) for Variable Importance analysis to identify food items significantly associated with AD.
    RESULTS: MFA revealed trends in the data and a strong correlation (Lg = 0.92, RV = 0.65) between the daily consumption of processed food and meat items in AD patients. In contrast, no significant relationship was found for any daily consumed food categories within the healthy control (HC) group. Food items such as meat pie, hamburger, ham, sausages, beef, capsicum, and cabbage were identified as important variables associated with AD in RF and SLR analyses.
    CONCLUSIONS: The findings from MFA indicated that the diversity or equilibrium of daily diet might play a potential role in AD development. RF and SLR classifications exhibit among the processed foods, especially deli meats and food made with meat items, are associated with AD.
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  • 文章类型: Journal Article
    在COVID-19大流行和零COVID政策实施3年后,从2022年11月至12月,中国观察到每日COVID-19感染数量迅速增加.因此,我们决定分析与中国COVID-19大流行有关的因素。
    进行了多因素分析,使用从COVID-19大流行开始到2023年1月30日的公开数据库中的数据。
    我们的研究表明,中国大流行的每一年都有不同的概况,可以用不同的变量来描述:2020年的特点是有限制,例如国际旅行管制,呆在家里的要求,和卫生系统政策,包括接触者追踪和老年人保护;2021年的特点是阿尔法,Beta,Gamma,和Delta变体;2022年的特点是每百万新增病例,Omicron血统,和一些与限制相关的变量;2023年主要由每百万新死亡人数和Omicron变体22B(BA.5)以及测试和疫苗接种政策来描述,以及每100人完全接种疫苗的人数和每100人的总助推器。
    随着时间的推移,COVID-19大流行发生了变化。因此,实施的抗大流行政策必须是动态的,并适应当前形势。
    After 3 years of the COVID-19 pandemic and zero-COVID policy, a rapid increase in the number of daily COVID-19 infections was observed in China from November to December 2022. Therefore, we decided to analyze the factors that have been related to the COVID-19 pandemic in China.
    The multiple factor analysis was conducted, using the data from publicly available databases from the beginning of the COVID-19 pandemic to 30 January 2023.
    Our study showed that each year of the pandemic in China had different profiles and can be described by different variables: year 2020 was characterized by restrictions, such as international travel controls, stay at home requirements, and health system policies including contact tracing and protection of older adults; year 2021 was characterized by Alpha, Beta, Gamma, and Delta variants; 2022 was characterized by new cases per million, Omicron lineages, and a few restrictions-related variables; and year 2023 was mainly described by the number of new deaths per million and Omicron variant 22B (BA.5) but also by testing and vaccination policies, as well as the number of people fully vaccinated per 100 and total boosters per 100.
    The COVID-19 pandemic has changed over time. Therefore, the anti-pandemic policies implemented must be dynamic and adapted to the current situation.
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  • 文章类型: Journal Article
    热带水果的香气在许多白葡萄酒中都很突出。这项工作的目的是确定酿酒实践是否会影响霞多丽葡萄酒中的热带水果香气,以及这些香气差异如何影响葡萄酒消费者的接受度和情绪反应。在不同的发酵温度梯度和皮肤接触时间下测试了四种处理:在13°C下无皮肤接触的对照发酵(对照),在13°C发酵18小时的皮肤接触(SC),时间发酵温度梯度(20°C4天,然后降低至13°C),无皮肤接触(FG),发酵温度梯度随时间18小时的皮肤接触(SCFG)。验收,使用7点享乐量表,显示处理之间没有显着差异。情绪反应,使用5点适用率(RATA)量表,表现出“平静”和“厌恶”情绪的显著差异。香气描述符的全部检查(CATA)表明,对照是使用西番莲的香气来描述的,荔枝,和pome水果;SC有葡萄柚和花香的香气;FG被描述为有甜瓜,荔枝,和菠萝的香气;SCFG被描述为柠檬/酸橙的香气,芒果,还有番石榴.积极的情绪与葡萄酒中的果香有关,尽管在接受度上没有发现差异。酿酒处理影响了霞多丽葡萄酒的香气,热带香气唤起消费者的积极情绪。特定香气与消费者情感反应之间的关系可以成为了解葡萄酒成功或缺乏成功背后因素的重要工具。此外,它可以帮助创造新的葡萄酒产品。
    Tropical fruit aromas are prominent in many white wines. The purpose of this work was to determine if winemaking practices could impact the tropical fruit aromas in the Chardonnay wines and how those aroma differences influenced wine consumers acceptance and emotional responses. Four treatments were tested at varying fermentation temperature gradients and skin contact times: control fermentation at 13 °C with no skin contact (Control), fermentation at 13 °C with 18 h of skin contact (SC), fermentation temperature gradient by time (20 °C for 4 days then reduced to 13 °C) with no skin contact (FG), fermentation temperature gradient by time with 18 h of skin contact (SCFG). Acceptance, using a 7-point hedonic scale, showed there was not a significant difference between treatments. Emotional response, using a 5-point Rate-All-That-Apply (RATA) scale, showed significant differences for \'calm\' and \'disgusted\' emotions. Check-all-that-apply (CATA) for aroma descriptors showed that Control is described using aromas of passionfruit, lychee, and pome fruit; SC had aromas of grapefruit and floral; FG was described as having melon, lychee, and pineapple aromas; and SCFG was described with aromas of lemon/lime, mango, and guava. Positive emotions were associated with fruity aromas in the wines, although no difference in acceptance was found. Winemaking treatments impacted the aroma profile of chardonnay wine, with tropical aromas evoking positive emotions in consumers. The relationship between specific aromas and consumers emotion responses can be an important tool to understand the factors behind a wine\'s success or lack thereof. Moreover, it can help with the creation of new wine products.
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