Vitis vinifera 'Pinot noir' leaves as a source of bioactive nutraceutical compounds

Agricultural by-products are often hidden sources of healthy plant ingredients. The investigation of the nutritional values of these by-products is essential towards sustainable agriculture and improved food systems. In the vine industry, grape leaves are a bulky side product which is strategically...

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Bibliographic Details
Published in:Food & function 2019-07, Vol.10 (7), p.3822-3827
Main Authors: Maia, Marisa, Ferreira, António E N, Laureano, Gonçalo, Marques, Ana Patrícia, Torres, Vukosava M, Silva, Anabela Bernardes, Matos, Ana Rita, Cordeiro, Carlos, Figueiredo, Andreia, Sousa Silva, Marta
Format: Article
Language:English
Subjects:
alpha-Linolenic Acid - analysis
Antioxidants
Antioxidants - analysis
Biodiversity
Biological activity
Byproducts
Caffeic acid
Catechin
Cultivars
Cyclotron resonance
Dietary Supplements - analysis
Fatty Acids
Food
Food industry
Fourier Analysis
Fourier transforms
Functional foods & nutraceuticals
Grapevines
Kaempferol
Leaves
Linolenic acid
Lipids
Mass spectrometry
Mass spectroscopy
Metabolome
Metabolomics
Pharmacology
Phenolic compounds
Phenols
Phenols - analysis
Phytochemicals - analysis
Phytosterols
Phytosterols - analysis
Plant Extracts - chemistry
Plant Extracts - pharmacology
Plant Leaves - chemistry
Polyketides - analysis
Polyphenols
Polyphenols - analysis
Quercetin
Sterols - analysis
Sustainable agriculture
Vitis - chemistry
Vitis vinifera
Waste treatment
Wine
Wines
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Summary:Agricultural by-products are often hidden sources of healthy plant ingredients. The investigation of the nutritional values of these by-products is essential towards sustainable agriculture and improved food systems. In the vine industry, grape leaves are a bulky side product which is strategically removed and treated as waste in the process of wine production. In this work we performed an untargeted metabolomic profiling of the methanol extract of the leaves of Vitis vinifera cultivar 'Pinot noir', analysed their fatty acid content, and estimated their antioxidative capacity, with the purpose of investigating its nutritional and medicinal value. Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR-MS) analysis identified the presence of numerous compounds which are known to possess diverse nutritional and pharmacological properties, particularly polyphenols and phenolic compounds (e.g. caffeic acid, catechin, kaempferol and quercetin), several phytosterols and fatty acids. Fatty acids were the most represented lipids' secondary class, with the essential alpha-linolenic acid being the most abundant in 'Pinot noir' leaves, with a relative content of 42%. Also, we have found that 'Pinot noir' leaves present a high antioxidant capacity, putting grapevine leaves at the top of the list of foods with the highest antioxidative activity. Our findings scientifically confirmed that 'Pinot noir' leaves have a high content and diversity of biologically active phytochemical compounds which make it of exceptional interest for pharmaceutical and food industries.
ISSN:2042-6496
2042-650X
DOI:10.1039/c8fo02328j