Modeling the Antioxidant Capacity of Red Wine from Different Production Years and Sources under Censoring

Jäntschi, Lorentz; Sestraş, Radu E.; Bolboacă, Sorana D.

doi:10.1155/2013/267360

Cited by 7 publications

(8 citation statements)

References 42 publications

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“…Progressive censoring has the property of allowing the removal of units at some time points that may not be the final termination point. Referring to Yadav et al [3], Jäntschi et al [4], Chen and Gui [5], Balakrishnan and Aggarwala [6] and Aggarwala [7], we can see more inferences about the progressive censored data. For progressive type II censored data, Lee et al [8] constructed a testing procedure for the lifetime performance index.…”

Section: Introductionmentioning

confidence: 84%

Experimental Design for the Lifetime Performance Index of Weibull Products Based on the Progressive Type I Interval Censored Sample

et al. 2021

Symmetry

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In this study, the experimental design is developed based on the testing procedure for the lifetime performance index of products following Weibull lifetime distribution under progressive type I interval censoring. This research topic is related to asymmetrical probability distributions and applications across disciplines. The asymptotic distribution of the maximum likelihood estimator of the lifetime performance index is utilized to develop the testing procedure. In order to reach the given power level, the minimum sample size is determined and tabulated. In order to minimize the total cost that occurred under progressive type I interval censoring, the sampling design is investigated to determine the minimum number of inspection intervals and equal interval lengths when the termination time of experiment is fixed or not fixed. For illustrative aims, one practical example is given for the implementation of our proposed sampling design to collect the progressive type I interval censored sample so that the users can use this sample to test if the lifetime performance index exceeds the desired target level.

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Section: Introductionmentioning

confidence: 84%

Experimental Design for the Lifetime Performance Index of Weibull Products Based on the Progressive Type I Interval Censored Sample

et al. 2021

Symmetry

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“…Recent studies have showed that grapes varieties have an impact in the antioxidant activity and bioactive compounds in red wines in different countries as France, Italy, Spain, and Brazil (Mulero;Zafrilla;Cayuela;Martínez-Cachá;Pardo, 2011;Jäntschi;Sestraş;Bolboacă, 2013;Padilha;Telles;Corrêa;dos Santos-Lima;Elias-Pereira, 2017). In Mexico, red wine production is a traditional practice based in Vitis vinifera L. grapes and the variation of their physicochemical and biochemical properties is of great interest for the oenological industry of Baja California.…”

Section: Introductionmentioning

confidence: 99%

Preliminary studies of bioactive compounds and color in Mexican read wines from Baja California region.

Méndez-Trujillo¹,

Mendoza²

2021

RCIA

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The total phenolic compounds, total anthocyanin content and antioxidant properties of ten commercially wines based on different grape cultivar from Baja California, Mexico were analyzed. The results showed that the content of phenolic compounds of Vitis vinifera cv. Petit Verdot and Petit Syrah wines had the most highest values of total phenolic content (1188.26 and 1148.13 mg GAE/L, respectively), with respect the another wines. However, wines elaborated with three different cultivars (Cabernet Sauvignon/Petit Verdot/Merlot), and wine from cultivar Petit Verdot presented the highest total flavonoids content (161.06 mg QE/L and 182.64 mg QE/L, respectively) and total anthocyanin content (286.38 mg ME/L and 2548.56 mg ME/L, respectively). In contrast only wine from three grape cultivars (Cabernet Sauvignon/Petit Verdot/Merlot), and wine from cultivar Gamay, exhibits the highest antioxidant activity among tested wines. Finally, these results suggest that wine elaborated with different cultivars (Cabernet Sauvignon/Petit Verdot/Merlot), is more beneficial to health than others red wines in terms of its higher antioxidant activity, total anthocyanin content and total flavonoid content

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“…Antioxidative systems include enzymes and nonenzymatic substrates, such as glutathione, coenzyme Q, vitamins C, A, and E, flavonoids, carotenoids, teine from tea [4–6], and others. Antioxidants are usually found in fruits, vegetables, rice, wine [7], meat, eggs, and other vegetal or animal products, or in food supplements [8].…”

Section: Introductionmentioning

confidence: 99%

CUPRAC Voltammetric Determination of Antioxidant Capacity in Tea Samples by Using Screen-Printed Microelectrodes

Trofin

Trincă

Ungureanu

et al. 2019

Journal of Analytical Methods in Chemistry

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Measurement of antioxidant capacity represents an analytical major challenge in terms of accuracy, efficiency, rapid response, or low cost of detection methods. Quantification of antioxidant capacity of food samples using disposable screen‐printed microelectrodes (SPMEs) was based on cyclic voltammetry versus open-circuit potential (CV vs OCP) and differential pulse voltammetry (DPV) as compared with spectrophotometric measurement of the CUPRAC reaction with 6-hydroxy-2,5,7,8-tetramethylchroman-2-carboxylic acid (trolox). The SPMEs are organic‐resistant electrodes and thus compatible with food samples and organic solvents used to dissolve trolox. A micropipette was used to release a drop of 50 μL sample on the spotted surface of the SPME sensor/working electrode that was time programmed to function according to the working protocol. The SPME response was linearly correlated with trolox content. This preliminary demonstration was focused on the analysis of tea infusions, due to the simplicity and reproducibility of the samples’ preparations involved. Analytical results of the antioxidant capacity (expressed as mol·L−1 trolox equivalents) of the tea samples showed a good agreement in the case of spectrophotometry and differential pulse voltammetry (R2 > 0.998). DPV with SPME based on CUPRAC reactions was proven to be a promising approach for the characterization of antioxidant capacity of tea samples with rapid response, cost-effectiveness, and simplicity of operation.

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Modeling the Antioxidant Capacity of Red Wine from Different Production Years and Sources under Censoring

Cited by 7 publications

References 42 publications

Experimental Design for the Lifetime Performance Index of Weibull Products Based on the Progressive Type I Interval Censored Sample

Experimental Design for the Lifetime Performance Index of Weibull Products Based on the Progressive Type I Interval Censored Sample

Preliminary studies of bioactive compounds and color in Mexican read wines from Baja California region.

CUPRAC Voltammetric Determination of Antioxidant Capacity in Tea Samples by Using Screen-Printed Microelectrodes

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