Geographical origin

地理起源
  • 文章类型: Journal Article
    人参的地理来源显著影响其营养价值和化学成分,进而影响其市场价格。分析这些差异的传统方法通常很耗时,并且需要大量的试剂,使他们效率低下。因此,高光谱成像(HSI)结合X射线技术用于人参产地的快速和无损可追溯性。最初,通过采用组合的孤立森林算法和密度峰值聚类(DPC)算法,可以有效地拒绝离群样本。随后,利用高光谱数据构建随机森林(RF)和支持向量机(SVM)分类模型。通过应用72种预处理方法及其组合,进一步优化了这些模型。此外,为了提高模型的性能,采用了四种变量筛选算法:SelectKBest,遗传算法(GA),最小绝对收缩和选择运算符(LASSO),和排列特征重要性(PFI)。优化后的模型,利用二阶导数,自动缩放,排列特征重要性,和支持向量机(2ndDer-AS-PFI-SVM),实现了93.4%的预测精度,在独立预测集上,Kappa值为0.876,Brier评分为0.030,F1评分为0.932,AUC为0.994。此外,从彩色和X射线图像中提取的图像数据(包括颜色信息和纹理信息)用于构建分类模型并评估其性能。其中,利用X射线图像的纹理信息构建的SVM模型表现最好,在验证集上实现了63.0%的预测精度,Brier评分为0.181,F1评分为0.518,AUC为0.553。通过基于Stacking策略实现中层融合和高层数据融合,发现采用高光谱光谱信息和X射线图像纹理信息的高级融合的模型明显优于仅使用高光谱光谱信息的模型。这种先进的模型达到了95.2%的预测精度,在独立预测集上,Kappa值为0.912,Brier评分为0.027,F1评分为0.952,AUC为0.997。总之,本研究不仅为人参产地的快速、无损溯源提供了一条新的技术路径,同时也展示了HSI和X射线技术在医药和食品可追溯性领域的联合应用的巨大潜力。
    The geographical origin of Panax ginseng significantly influences its nutritional value and chemical composition, which in turn affects its market price. Traditional methods for analyzing these differences are often time-consuming and require substantial quantities of reagents, rendering them inefficient. Therefore, hyperspectral imaging (HSI) in conjunction with X-ray technology were used for the swift and non-destructive traceability of Panax ginseng origin. Initially, outlier samples were effectively rejected by employing a combined isolated forest algorithm and density peak clustering (DPC) algorithm. Subsequently, random forest (RF) and support vector machine (SVM) classification models were constructed using hyperspectral spectral data. These models were further optimized through the application of 72 preprocessing methods and their combinations. Additionally, to enhance the model\'s performance, four variable screening algorithms were employed: SelectKBest, genetic algorithm (GA), least absolute shrinkage and selection operator (LASSO), and permutation feature importance (PFI). The optimized model, utilizing second derivative, auto scaling, permutation feature importance, and support vector machine (2nd Der-AS-PFI-SVM), achieved a prediction accuracy of 93.4 %, a Kappa value of 0.876, a Brier score of 0.030, an F1 score of 0.932, and an AUC of 0.994 on an independent prediction set. Moreover, the image data (including color information and texture information) extracted from color and X-ray images were used to construct classification models and evaluate their performance. Among them, the SVM model constructed using texture information from X -ray images performed the best, and it achieved a prediction accuracy of 63.0 % on the validation set, with a Brier score of 0.181, an F1 score of 0.518, and an AUC of 0.553. By implementing mid-level fusion and high-level data fusion based on the Stacking strategy, it was found that the model employing a high-level fusion of hyperspectral spectral information and X-ray images texture information significantly outperformed the model using only hyperspectral spectral information. This advanced model attained a prediction accuracy of 95.2 %, a Kappa value of 0.912, a Brier score of 0.027, an F1 score of 0.952, and an AUC of 0.997 on the independent prediction set. In summary, this study not only provides a novel technical path for fast and non-destructive traceability of Panax ginseng origin, but also demonstrates the great potential of the combined application of HSI and X-ray technology in the field of traceability of both medicinal and food products.
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  • 文章类型: Journal Article
    土耳其是榛子的主要生产国,贡献了全球总产量的62%。在18个不同的当地榛子品种中,GiresunTombul是唯一获得欧洲委员会(EC)保护原产地名称的品种。然而,目前没有实用的客观方法来确保其地理来源。因此,在这项研究中,近红外光谱和拉曼光谱,以及化学计量学方法,如主成分分析,PLS-DA(偏最小二乘判别分析),和SVM-C(支持向量机分类),用于确定GiresunTombul榛子品种的地理起源。为此,在2021年和2022年的生长季节,从土耳其的八个不同地区收集了118个独特果园的样本。从每个样品的壳和核获得NIR和拉曼光谱。结果表明,与光谱技术和样品类型(壳或仁)无关,榛子样品根据生长季节表现出明显的分组趋势。与从榛子仁获得的光谱信息相比,从榛子壳获得的光谱信息显示出更高的地理起源鉴别力。PLS-DA模型利用FT-NIR(傅里叶变换近红外)和榛子壳的拉曼光谱实现了81.7%和88.3%的验证精度,分别,而SVM-C模型的准确率分别为90.9%和86.3%。结论是榛子壳的木质纤维素组成,表明它们的地理起源,可以使用FT-NIR和拉曼光谱进行准确评估,提供一种非破坏性的,快速,和用户友好的方法,用于识别GiresunTombul榛子的地理来源。实际应用:拟议的光谱方法为榛子价值链参与者提供了一种快速,无损的手段,以验证GiresunTombul榛子的地理起源。这肯定可以通过确保产品真实性来增强消费者的信任,并可能有助于防止榛子市场内的欺诈。此外,这些方法也可以作为未来针对其他带壳坚果认证的研究的参考。
    Turkey is the leading producer of hazelnuts, contributing to 62% of the total global production. Among 18 distinct local hazelnut cultivars, Giresun Tombul is the only cultivar that has received Protected Designation of Origin denomination from the European Comission (EC). However, there is currently no practical objective method to ensure its geographic origin. Therefore, in this study NIR and Raman spectroscopy, along with chemometric methods, such as principal component analysis, PLS-DA (partial least squares-discriminant analysis), and SVM-C (support vector machine-classification), were used to determine the geographical origin of the Giresun Tombul hazelnut cultivar. For this purpose, samples from unique 118 orchards were collected from eight different regions in Turkey during the 2021 and 2022 growing seasons. NIR and Raman spectra were obtained from both the shell and kernel of each sample. The results indicated that hazelnut samples exhibited distinct grouping tendencies based on growing season regardless of the spectroscopic technique and sample type (shell or kernel). Spectral information obtained from hazelnut shells demonstrated higher discriminative power concerning geographical origin compared to that obtained from hazelnut kernels. The PLS-DA models utilizing FT-NIR (Fourier transform near-infrared) and Raman spectra for hazelnut shells achieved validation accuracies of 81.7% and 88.3%, respectively, while SVM-C models yielded accuracies of 90.9% and 86.3%. It was concluded that the lignocellulosic composition of hazelnut shells, indicative of their geographic origin, can be accurately assessed using FT-NIR and Raman spectroscopy, providing a nondestructive, rapid, and user-friendly method for identifying the geographical origin of Giresun Tombul hazelnuts. PRACTICAL APPLICATION: The proposed spectroscopic methods offer a rapid and nondestructive means for hazelnut value chain actors to verify the geographic origin of Giresun Tombul hazelnuts. This could definitely enhance consumer trust by ensuring product authenticity and potentially help in preventing fraud within the hazelnut market. In addition, these methods can also be used as a reference for future studies targeting the authentication of other shelled nuts.
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  • 文章类型: Journal Article
    高价值农产品的掺假是全球消费者和行业的关键问题。地理来源的区分可以通过降低风险和检测掺假来验证食品的真实性。在农产品之间,豆类是全世界种植的非常重要的作物,提供富含铁和维生素的食物,尤其是第三世界国家的人。这项研究的目的是构建巨豆的局部特征同位素指纹图谱,\“FasoliaGigantes-ElefantesPGI\”,在Kastoria和Presses地区种植的受保护地理标志产品,西马其顿,希腊,从两个方面对豆类进行歧视的最终目标。总的来说,在每个栽培期(2020-2021年和2021-2022年),从Prespes地区的不同田地收集了160个样品,并从Kastoria收集了120个样品。光元素(C,N,和S)同位素比使用同位素比质谱(IRMS)测量,并使用化学计量学技术分析获得的结果,包括单因素方差分析和二项逻辑回归。单向方差分析的平均值为δ15NAIR=1.875,δ13CV-PDB=-25.483,Kastoria的δ34SV-CDT=4.779,δ15NAIR=1.654,δ13CV-PDB=-25.928,对于Presses,δ34SV-CDT=-0.174,并显示所研究区域的C和S的稳定同位素比在统计学上不同,而随后的二项逻辑回归分析正确分类了78%以上的样品。
    Adulteration of high-value agricultural products is a critical issue worldwide for consumers and industries. Discrimination of the geographical origin can verify food authenticity by reducing risk and detecting adulteration. Between agricultural products, beans are a very important crop cultivated worldwide that provides food rich in iron and vitamins, especially for people in third-world countries. The aim of this study is the construction of a map of the locally characteristic isotopic fingerprint of giant beans, \"Fasolia Gigantes-Elefantes PGI\", a Protected Geographical Indication product cultivated in the region of Kastoria and Prespes, Western Macedonia, Greece, with the ultimate goal of the discrimination of beans from the two areas. In total, 160 samples were collected from different fields in the Prespes region and 120 samples from Kastoria during each cultivation period (2020-2021 and 2021-2022). The light element (C, N, and S) isotope ratios were measured using Isotope Ratio Mass Spectrometry (IRMS), and the results obtained were analyzed using chemometric techniques, including a one-way ANOVA and Binomial logistic regression. The mean values from the one-way ANOVA were δ15NAIR = 1.875‱, δ13CV-PDB = -25.483‱, and δ34SV-CDT = 4.779‱ for Kastoria and δ15NAIR = 1.654‱, δ13CV-PDB = -25.928‱, and δ34SV-CDT = -0.174‱ for Prespes, and showed that stable isotope ratios of C and S were statistically different for the areas studied while the Binomial logistic regression analysis that followed correctly classified more than 78% of the samples.
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  • 文章类型: Journal Article
    蜂蜜中嵌入的独特花卉指纹为其地理和植物起源提供了宝贵的线索,在确保真实性和检测掺假方面发挥着至关重要的作用。来自Karangasem的本地Apiscerana和Heterotrigonaitama蜜蜂的蜂蜜,印度尼西亚,利用花粉DNA元编码进行蜂蜜来源鉴定。在这项研究中,我们使用ITS2扩增子测序来鉴定蜂蜜样品中的花DNA。该发现揭示了每个蜜蜂物种的不同花粉特征。结果分析显示A.ceranahoney产生了179,267个序列读数,组装成总大小为485,932bp和平均GC含量为59%的扩增子序列变体(ASV)。H.itamahoney产生了177,864个序列读段,组装成ASV,总大小为350,604bp,平均GC含量为57%。A.cerana蜂蜜展示了来自11个不同属的丰富花粉挂毯,Schleichera属占主导地位的相对阅读丰度为72.8%。相比之下,H.itama蜂蜜显示出Syzygium属的显着单一优势,占其花粉组成或相对阅读丰度的惊人99.95%,突出了他们独特的觅食偏好和花卉资源利用。值得注意的是,所有确定的花粉类群都是Karangasem的土著,巩固蜂蜜与其起源之间的地理联系。这项研究表明,花粉DNA元编码可以识别蜂蜜花源。通过使用来自不同蜜蜂物种的花粉概况及其觅食模式,我们可以保护消费者免受蜂蜜掺假,并促进Karangasem地区的可持续养蜂。未来的研究可以探索扩大参考花粉序列数据库,并研究环境因素对蜂蜜中花粉组成的影响。调查这项技术对养蜂人和消费者的经济和社会影响可能有助于促进全球公平贸易和可持续养蜂。
    The unique floral fingerprint embedded within honey holds valuable clues to its geographical and botanical origin, playing a crucial role in ensuring authenticity and detecting adulteration. Honey from native Apis cerana and Heterotrigona itama bees in Karangasem, Indonesia, was examined utilizing pollen DNA metabarcoding for honey source identification. In this study, we used ITS2 amplicon sequencing to identify floral DNA in honey samples. The finding reveals distinct pollen signatures for each bee species. Results analysis showed A. cerana honey generated 179,267 sequence reads, assembled into Amplicon Sequence Variants (ASVs) with a total size of 485,932 bp and an average GC content of 59 %. H. itama honey generated 177,864 sequence reads, assembled into ASVs with a total size of 350,604 bp and an average GC content of 57 %. A. cerana honey exhibited a rich tapestry of pollen from eleven diverse genera, with Schleichera genus dominating at an impressive relative read abundance of 72.8 %. In contrast, H. itama honey displayed a remarkable mono-dominance of the Syzygium genus, accounting for a staggering 99.95 % of its pollen composition or relative read abundance, highlighting their distinct foraging preferences and floral resource utilization. Notably, all identified pollen taxa were indigenous to Karangasem, solidifying the geographical link between honey and its origin. This study demonstrates pollen DNA metabarcoding may identify honey floral sources. By using pollen profiles from different bee species and their foraging patterns, we may protect consumers against honey adulteration and promote sustainable beekeeping in Karangasem district. Future research could explore expanding the database of reference pollen sequences and investigating the influence of environmental factors on pollen composition in honey. Investigating this technology\'s economic and social effects on beekeepers and consumers may help promote fair trade and sustainable beekeeping worldwide.
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  • 文章类型: Journal Article
    迪果(FicustikouaBur.),一种古老的野生水果,在中国西南地区广泛传播。然而,关于表型特征的信息很少,质量特性,和迪果果实可用的香气化合物。本研究是对中国西南地区野生地果果实表型性状和品质特征的影响的调查。还使用气相色谱-质谱法研究了混合水果样品中的挥发性化合物。我们的结果表明,在所有表型参数中,采样材料之间存在显着差异。水果鲜重在2.06至4.59g之间。此外,在所有大量营养素(干物质,总可溶性固体,粗蛋白,粗脂肪,和灰分)和一些营养参数(谷氨酸,精氨酸总可溶性固体,麦芽糖,和甘露糖,等。).不管他们的地理起源,地果果实的脂肪和果糖含量相对较低,纤维和谷氨酸含量较高。在冷冻的地果果实中总共鉴定出95种挥发性成分。总之,具有丰富营养属性的地果果实具有商业化生产的前景。观察到的地果果实形态和营养特征的变异性为改善地果作为现代水果作物的育种提供了重要特征。
    Diguo (Ficus tikoua Bur.), an ancient wild fruit, is widely spread in southwest China. However, there is little information on the phenotypic traits, quality characteristics, and aroma compounds available to diguo fruit. The present study is an investigation into the effects of geographical origin on the phenotypic traits and quality characteristics of wild diguo fruit collected from southwest China. The volatile compounds in the mixed fruit samples were also investigated using gas chromatography-mass spectrometry. Our results indicated that significant variation existed among the sampling materials in all the phenotypic parameters. Fruit fresh weight ranged between 2.06 and 4.59 g. Moreover, significant variation existed among the selected materials in all macronutrients (dry matter, total soluble solids, crude protein, crude fat, and ash) and some nutritional parameters (glutamate, arginine, total soluble solids, maltose, and mannose, etc.). Regardless of their geographical origin, diguo fruit is relatively low in fat and fructose and high in fiber and glutamate. A total of 95 volatile constituents were identified in the frozen diguo fruit. In conclusion, diguo fruit with rich nutritional attributes has a promising future for commercial-scale production. The variability of the observed morphological and nutritional features of diguo fruit provides important characteristics for improving the breeding of diguo as a modern fruit crop.
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  • 文章类型: Journal Article
    也门小农咖啡农面临着几个挑战,包括持续的内战,灌溉的降雨量有限,缺乏收获后处理基础设施。几十年的政治不稳定影响了质量,可访问性,和也门咖啡豆的声誉。尽管面临这些挑战,也门咖啡因其独特的风味而受到高度重视,被认为是世界上最有价值的咖啡之一。由于其排他性和感知价值,这也是食品欺诈和掺假的主要目标。这是第一个确定近红外光谱和化学计量学潜力的研究,更具体地说,判别分析(PCA-LDA)-作为一种有希望的方法,快,以及也门咖啡可追溯性和也门咖啡行业可持续性的具有成本效益的工具。来自也门地区的整个绿咖啡豆的NIR光谱特征(n=124;AlMahwit,Dhamar,Ibb,Sa\'dah,和Sana\'a)和其他起源(n=97)被准确地区分,灵敏度,使用PCA-LDA模型,特异性≥98%。这些结果表明,绿咖啡的化学成分和光谱特征上捕获的其他因素可以影响对地理起源的区分。咖啡在国际市场上估值的重要组成部分。
    Yemeni smallholder coffee farmers face several challenges, including the ongoing civil conflict, limited rainfall levels for irrigation, and a lack of post-harvest processing infrastructure. Decades of political instability have affected the quality, accessibility, and reputation of Yemeni coffee beans. Despite these challenges, Yemeni coffee is highly valued for its unique flavor profile and is considered one of the most valuable coffees in the world. Due to its exclusive nature and perceived value, it is also a prime target for food fraud and adulteration. This is the first study to identify the potential of Near Infrared Spectroscopy and chemometrics-more specifically, the discriminant analysis (PCA-LDA)-as a promising, fast, and cost-effective tool for the traceability of Yemeni coffee and sustainability of the Yemeni coffee sector. The NIR spectral signatures of whole green coffee beans from Yemeni regions (n = 124; Al Mahwit, Dhamar, Ibb, Sa\'dah, and Sana\'a) and other origins (n = 97) were discriminated with accuracy, sensitivity, and specificity ≥ 98% using PCA-LDA models. These results show that the chemical composition of green coffee and other factors captured on the spectral signatures can influence the discrimination of the geographical origin, a crucial component of coffee valuation in the international markets.
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  • 文章类型: English Abstract
    基于一个人的种族背景的医疗保健歧视越来越多地在医学中进行研究。新冠肺炎大流行的规模在揭示它们方面发挥了重要作用。数据,虽然稀缺,存在于法国。这些歧视会影响护理途径,并导致受影响最严重的人群放弃护理。歧视问题在传染病中尤其重要。尽管传染病的流行病学在世界范围内分布不均,错误的社会陈述普遍存在,并在传染病方面暴露了对移民的有害偏见。某些传染病的传染性增强了其污名化的潜力。在这种情况下,讨论社会决定因素的维度似乎很重要,地理起源,表型,以及教学和医学推理中的种族。英语世界以结构性的方式使用“种族”的概念,而这个“国际标准”直到现在还没有在法国应用。改善对少数民族的照顾,更好地记录和教授基于起源的更细致的临床推理似乎很重要,而不忽视收集和考虑健康和环境因素的社会决定因素的重要性。
    Healthcare discriminations based on one\'s ethnic background is increasingly being studied in medicine. The scale of the Covid-19 pandemic has played an important role in bringing them to light. Data, although scarce, exist in France. These discriminations have an impact on the care pathway and contribute to the renunciation of care by the most affected populations. The issue of discrimination is particularly relevant in infectious diseases. Although the epidemiology of infectious diseases is unevenly distributed worldwide, erroneous social representations are prevalent and expose to a harmful prejudice against migrants with regard to infectious diseases. The transmissible nature of some infectious diseases reinforces their stigmatizing potential. In this context, it seems important to discuss the dimension to be given to social determinants, geographical origin, phenotype, and ethnicity in teaching and medical reasoning. The English-speaking world uses the concept of \"race\" in a structural way, whereas this \"international standard\" has not been applied in France until now. To improve the care of people from minority groups, it seems important to better document and teach a more nuanced clinical reasoning based on origin, without neglecting the importance of collecting and taking into account social determinants of health and environmental factors.
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  • 文章类型: Journal Article
    研究了按产地评估葡萄酒真实性的特征,根据葡萄酒的矿物成分之间的关系,葡萄,和赤霞珠葡萄生长地点的土壤剖面(0至160厘米)。土壤,葡萄,葡萄酒样本取自克拉斯诺达尔地区阿纳帕区的六个葡萄园,俄罗斯。使用ICP-OES的方法,热,和X射线相位分析,土壤分为三组,矿物学和矿物成分不同。第一组的土壤样品含有高达31%的石英,第二组高达25%的石英和19%的混合方解石,和第三组高达32%的方解石和15%的石英。研究了葡萄元素图像的形成,考虑到土壤中金属的总含量和移动形式。葡萄园的地域邻近并不影响从土壤中提取元素到葡萄浆果中,每个地区的金属迁移都是选择性的。根据生物吸收系数的值,估计了金属从土壤到浆果的过渡程度。对于K,Ti,Zn,Rb,Cu,所有浆果中都有铁,系数高于1.00,这意味着浆果提取物不仅含有流动形式,还有难以溶解的金属化合物。宏观组分从土壤到浆果的迁移量很低,钙占6-7%,Na为0.8-3.0%,和25-70%的Mg的浓度的他们的移动形式。对于所有领土,从0-40厘米的深度观察到葡萄和土壤中金属浓度之间的最大相关性。基于Rb浓度的判别模型,Al,K,Sr,Co,Na,Pb,Ca,Ni显示了葡萄园种植区域中集群的形成。开发的模型可以高精度地解决按地区识别葡萄酒的问题,使用他们的元素形象。
    The features for assessing the authenticity of wines by region of origin are studied, based on the relationship between the mineral composition of the wine, the grapes, and the soil profile (0 to 160 cm) from the place of growth of Cabernet Sauvignon grapes. Soil, grape, and wine samples were taken from the territories of six vineyards in the Anapa district of Krasnodar Territory, Russia. Using the methods of ICP-OES, thermal, and X-ray phase analysis, the soils were differentiated into three groups, differing in mineralogical and mineral compositions. The soil samples of the first group contained up to 31% quartz, the second group up to 25% quartz and 19% mixed calcite, and the third group up to 32% calcite and 15% quartz. The formation of the elemental image of the grapes was studied, taking into account the total content and mobile forms of metals in the soil. The territorial proximity of the vineyards did not affect the extraction of elements from the soil into the grape berry, and the migration of metals for each territory was selective. According to the values of the biological absorption coefficient, the degree of transition of metals from the soil to a berry was estimated. For K, Ti, Zn, Rb, Cu, and Fe in all berries, the coefficient was higher than 1.00, which means that the berry extracts contained not only mobile-form, but also difficult-to-dissolve metal compounds. The migration of macro-components from the soil to the berry was low, and amounted to 6-7% for Ca, 0.8-3.0% for Na, and 25-70% for Mg of the concentration of their mobile forms. For all territories, the maximum correlation between metal concentrations in grapes and soil was observed for samples from a depth of 0-40 cm. The discriminant model based on concentrations of Rb, Al, K, Sr, Co, Na, Pb, Ca, and Ni showed the formation of clusters in the territories of vineyard cultivation. The developed model allow the problems of identifying wines by region to be solved with high accuracy, using their elemental image.
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  • 文章类型: Journal Article
    这项工作的目的是研究两个地点和七个品种对挪威有机生长的李子(PrunusdomesticaL.)果实中代谢物分析的影响。P,K,钙在所研究的水果中含量最高,而Ba和Sr在位置之间形成了一条清晰的线。最丰富的糖是葡萄糖,果糖,蔗糖,和山梨糖醇,合计占97.00%。奎尼酸和苹果酸是主要的有机酸,而绿原酸,芦丁,山奈酚-3-O-葡萄糖苷是最丰富的多酚。来自Ullensvang的李子的特征是矿物质含量较高,糖,糖有机酸,总多酚含量(TPC),和自由基清除活性(RSA),而来自Telemark的李子的定量多酚含量较高。品种“绿头鸭”具有最高的矿物质和自由基清除活性,\'蛋白石\'有最甜的水果,\'Jubileum\'的酸度最高,\'神剑\'的TPC含量最高,和“勇气”储存了最高含量的量化多酚,尤其是绿原酸.这些结果提供了有关选定李子品种的化学概况的全面信息,这表明有机李子是有益化合物的丰富来源,可以对人类健康产生积极影响。
    The aim of this work was to investigate the influence of two locations and seven cultivars on the profiling of metabolites in organically grown plums (Prunus domestica L.) fruit in Norway. P, K, and Ca were most abundant in the studied fruits, while Ba and Sr formed a clear line between the locations. The most abundant sugars were glucose, fructose, sucrose, and sorbitol, which together accounted for up to 97.00%. Quinic acid and malic acid were the predominant organic acids, while chlorogenic acid, rutin, and kaempferol-3-O-glucoside were the most abundant polyphenols. Plums from Ullensvang were characterized by a higher content of minerals, sugars, organic acids, total polyphenol content (TPC), and radical scavenging activity (RSA), while plums from Telemark had a higher content of quantified polyphenols. The cultivar \'Mallard\' had the highest mineral and radical scavenging activity, \'Opal\' had the sweetest fruit, \'Jubileum\' had the highest acidity, \'Excalibur\' had the highest TPC content, and \'Valor\' stored the highest content of quantified polyphenols, especially chlorogenic acid. These results provide comprehensive information on the chemical profiles of selected plum cultivars, suggesting that organic plums are a rich source of beneficial compounds that can have a positive impact on human health.
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  • 文章类型: Journal Article
    贴错标签的KhaoDawk马里105大米来自通库拉荣海地区以外的其他地理区域,利润极高,难以发现;防止零售欺诈(对食品行业和消费者都产生不利影响),确定地理起源至关重要。近红外光谱法可用于检测农产品和食品中有机部分的特定含量。本研究采用FT-NIR光谱与化学计量学相结合的方法来识别KhaoDawk马里105水稻的地理起源。水稻样品来自泰国北部和东北部的两个不同地区。在12,500-4,000cm-1(800-2,500nm)的范围内收集NIR光谱数据。五种机器学习算法,包括线性判别分析(LDA),偏最小二乘判别分析(PLS-DA),C-支持向量分类(C-SVC)反向传播神经网络(BPNN),采用混合主成分分析神经网络(PC-NN)和K最近邻(KNN),通过极端随机树(Extratrees)算法对全波长和选定波长的水稻样品的近红外数据进行分类。根据调查结果,可以快速确定水稻的地理来源,便宜,并可靠地结合使用NIRS和机器学习。所有由全波长和选定波长创建的模型在识别水稻地理区域方面的准确性在65%至100%之间。事实证明,近红外光谱可用于快速,无损地鉴定KhaoDawk马里105水稻的地理来源。
    The mislabelled Khao Dawk Mali 105 rice coming from other geographical region outside the Thung Kula Rong Hai region is extremely profitable and difficult to detect; to prevent retail fraud (that adversely affects both the food industry and consumers), it is vital to identify geographical origin. Near infrared spectroscopy can be used to detect the specific content of organic moieties in agricultural and food products. The present study implemented the combinatorial method of FT-NIR spectroscopy with chemometrics to identify geographical origin of Khao Dawk Mali 105 rice. Rice samples were collected from 2 different region including the north and northeast of Thailand. NIR spectra data were collected in range of 12,500 - 4,000 cm-1 (800-2,500 nm). Five machine learning algorithms including linear discriminant analysis (LDA), partial least squares discriminant analysis (PLS-DA), C-support vector classification (C-SVC), backpropagation neural networks (BPNN), hybrid principal component analysis-neural network (PC-NN) and K-nearest neighbors (KNN) were employed to classify NIR data of rice samples with full wavelength and selected wavelength by Extremely Randomized Trees (Extra trees) algorithm. Based on the findings, geographical origin of rice could be specified quickly, cheaply, and reliably using combination of NIRS and machine learning. All models creating by full wavelength and selected wavelength exhibited accuracy between 65 and 100 % for identifying geographical region of rice. It was proven that NIR spectroscopy may be used for the quick and non-destructive identification of geographical origin of Khao Dawk Mali 105 rice.
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