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Mostrando ítems 1-10 de 17
Artículo
Use of near infrared hyperspectral tools for the screening of extractable polyphenols in red grape skins
(Elsevier, 2015)
Hyperspectral images of intact grapes were recorded at harvest time using a near infrared hyperspectral imaging system (900–1700 nm). Spectral data have been correlated with red grape skin extractable poly- phenols (total ...
Artículo
Feasibility Study on the Use of Near-Infrared Hyperspectral Imaging for the Screening of Anthocyanins in Intact Grapes during Ripening
(American Chemical Society, 2013)
The potential of near-infrared hyperspectral imaging to determine anthocyanins in intact grape has been evaluated. The hyperspectral images of intact grapes during ripening were recorded using a near-infrared hyperspectral ...
Artículo
Feasibility Study on the Use of a Portable Micro Near Infrared Spectroscopy Device for the “in Vneyard” Screening of Extractable Polyphenols in Red Grape Skins
(Elsevier, 2019)
There is substantial variation in levels of extractable phenolic compounds of red grapes (Vitis vinifera L.). Therefore, it could be desirable to known the aforesaid parameter at least for each vine. Nowadays, interest has ...
Artículo
Evaluation of the influence of white grape seed extracts as copigment sources on the anthocyanin extraction from grape skins previously classified by near infrared hyperspectral tools
(Elsevier, 2017)
Hyperspectral imaging has been used to classify red grapes (Vitis vinifera L.) according to their predicted extractable total anthocyanin content (i.e. extractable total anthocyanin content determined by a hyperspectral ...
Artículo
Comparative study on the use of anthocyanin profile, color image analysis and near-infrared hyperspectral imaging as tools to discriminate between four autochthonous red grape cultivars from la Rioja (Spain)
(Elsevier, 2015)
Three independent methodologies were investigated to achieve the differentiation of red grapes from different grape varieties (Garnacha, Graciano, Mazuelo and Tempranillo) collected from five vineyards located in the ...
Artículo
A novel method for evaluating flavanols in grape seeds by near infrared hyperspectral imaging
(Elsevier, 2014)
Chemical composition of seeds changes during grape ripening and this affects the sensory properties of wine. In order to control the features of wines, the condition of seeds is becoming an important factor for deciding ...
Artículo
Influence of Oak Wood Chips–grape Mix Maceration on the Extraction of Anthocyanins from Low‑extractable Anthocyanin Content Red Grapes
(Springer Nature, 2017)
Wine color depends not only on the amount of anthocyanin present in the grapes, but also on the amount of them that may be extracted from grapes and their interac- tions with other phenolic compounds. Color stabilization ...
Artículo
Trying to set up the flavanolic phases during grape seed ripening: A spectral and chemical approach
(Elsevier, 2016)
Grape seeds were collected in ten different dates and classified in seven groups according to their individual hyperspectral imaging characteristics. Proanthocyanidin composition was studied using HPLC-MS for oligomers ...
Artículo
On the Use of Vibrational Spectroscopy and Scanning Electron Microscopy to Study Phenolic Extractability of Cooperage Byproducts in Wine
(Springer Nature, 2019)
Wood is an important source of phenolic compounds, which can be transferred to wine during aging process, improving its properties, from an organoleptic point of view. Therefore, understanding and optimizing the extractability ...
Artículo
Evaluation of extractable polyphenols released to wine from cooperage byproduct by near infrared hyperspectral imaging
(Elsevier, 2018)
Extractable total phenolic content of American non-toasted oak (Quercus alba L.) shavings has been determined using near infrared hyperspectral imaging. A like-wine model solution was used for the simulated maceration ...