ArticleScientific reports2020
Comparative quantification of chlorophyll and polyphenol levels in grapevine leaves sampled from different geographical locations.
Article in Scientific reports, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.
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Who cites it
11 citing papers in PubMed.
- Optimizing chlorophyll content prediction in tea leaves via spectral transformations and deep learning.BMC plant biology · 2025Article
- The Transformation of Pigment in Fruit Wine, Precise Control of Pigment Formation, and Their Effect on Product Quality.Foods (Basel, Switzerland) · 2025Review
- Article
- Evolution of Leaf Chlorophylls, Carotenoids and Phenolic Compounds during Vegetation of Some Croatian Indigenous Red and White Grape Cultivars.Plants (Basel, Switzerland) · 2024Article
- A New Method for Fractionation and Characterization of Polyphenols and Tannins from Grapevine Leaf Tissue.Plants (Basel, Switzerland) · 2023Article
- The Use of Infrared Spectroscopy for the Quantification of Bioactive Compounds in Food: A Review.Molecules (Basel, Switzerland) · 2023Review
- A high-throughput phenotyping assay for precisely determining stalk crushing strength in large-scale sugarcane germplasm.Frontiers in plant science · 2023Article
- Quantification of Salicylates and Flavonoids in Poplar Bark and Leaves Based on IR, NIR, and Raman Spectra.Molecules (Basel, Switzerland) · 2022Article
- Improving berry quality and antioxidant ability in 'Ruidu Hongyu' grapevine through preharvest exogenous 2,4-epibrassinolide, jasmonic acid and their signaling inhibitors by regulating endogenous phytohormones.Frontiers in plant science · 2022Article
- Decision making based on hybrid modeling approach applied to cellulose acetate based historical films conservation.Scientific reports · 2021Article
- The radical scavenging activity of moracins: theoretical insights.RSC advances · 2020Article
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Authors and funding
5 authors.
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Abstract
Near infrared spectroscopy (NIRS) and mid-infrared spectroscopy (MIRS) in combination with chemometric analysis were applied to discriminate the geographical origin of grapevine leaves belonging to the variety "Touriga Nacional" during different vegetative stages. Leaves were collected from plants of two different wine regions in Portugal (Dão and Douro) over the grapes maturation period. A sampling plan was designed in order to obtain the most variability within the vineyards taking into account variables such as: solar exposition, land inclination, altitude and soil properties, essentially. Principal component analysis (PCA) was used to extract relevant information from the spectral data and presented visible cluster trends. Results, both with NIRS and MIRS, demonstrate that it is possible to discriminate between the two geographical origins with an outstanding accuracy. Spectral patterns of grapevine leaves show significant differences during grape maturation period, with a special emphasis between the months of June and September. Additionally, the quantification of total chlorophyll and total polyphenol content from leaves spectra was attempted by both techniques. For this purpose, partial least squares (PLS) regression was employed. PLS models based on NIRS and MIRS, both demonstrate a statistically significant correlation for the total chlorophyll (R
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