Optimization of anthocyanin, flavonol and phenolic acid extractions from Delonix regia tree flowers using ultrasound-assisted water extraction

Autor: Farid Chemat, Félix Adjé, Augustin Amissa Adima, Emile M. Gaydou, Yves Lozano, Paul Lozano
Přispěvatelé: Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad), Institut National Polytechnique Félix Houphouët-Boigny, Sécurité et Qualité des Produits d'Origine Végétale (SQPOV), Avignon Université (AU)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Université Paul Cézanne - Aix-Marseille 3, French Embassy in Abidjan (Ivory Coast), CIRAD (DRS), French national network CNRS-INRA
Jazyk: angličtina
Rok vydání: 2010
Předmět:
0106 biological sciences
Polyphénol
[SDV]Life Sciences [q-bio]
Fleur
ANTHOCYANINS
01 natural sciences
chemistry.chemical_compound
Flavonols
DELONIX REGIA
[SDV.IDA]Life Sciences [q-bio]/Food engineering
Gallic acid
Food science
Boisson non alcoolisée
ULTRASOUND
chemistry.chemical_classification
biology
Water extraction
CAESALPINIACEAE
6. Clean water
Anthocyane
Delonix regia
EXTRACTION
Macération
POLYPHENOLS
Q02 - Traitement et conservation des produits alimentaires
010608 biotechnology
Botany
Maceration (wine)
[SPI.GPROC]Engineering Sciences [physics]/Chemical and Process Engineering
MACERATION
Q04 - Composition des produits alimentaires
FLAVONOLS
010401 analytical chemistry
Phenolic acid
Flavonoïde
biology.organism_classification
0104 chemical sciences
chemistry
Ultrason
Polyphenol
Anthocyanin
BIODIVERSITY
Agronomy and Crop Science
Zdroj: Industrial Crops and Products
Industrial Crops and Products, Elsevier, 2010, 32 (3), pp.439-444. ⟨10.1016/j.indcrop.2010.06.011⟩
ISSN: 0926-6690
DOI: 10.1016/j.indcrop.2010.06.011⟩
Popis: International audience; Flowers of Delonix regia trees from Ivory Coast are traditionally macerated in water to prepare beverages with beneficial health properties mainly due to their polyphenolic contents. Different maceration procedures, mimicking the traditional process, were compared on the basis of polyphenol content followed by HPLC-DAD analysis. Under optimized maceration ratio (R = plant sample weight/maceration media volume), plant extractions were compared, including acidified-water-based media and assisted-ultrasound or stirring extraction procedures. Diffusion kinetics of polyphenol families (anthocyanins, flavonols and phenolic acids) were followed by HPLC and lead to find optimum ratio (R = 1/100). Flavonol contents were 28.5, 31, and 33.5 μmol g−1 (expressed as quercetin equivalent), using acidified-water (0.01N) media with sulphuric or citric acids. Anthocyanin and phenolic acid contents were within the same range for these water media (5.6 μmol g−1 as cyanidin equiv. and 27.5 μmol g−1 as gallic acid (GA) equiv., respectively). Ultrasound-assisted procedure shortened maceration time (three times shorter) but did not show higher level of total polyphenol than stirring-assisted procedure (39 μmol g−1 GA equiv.). This eco-friendly and low-cost extraction process will provide to African people, with safer quality and longer availability, polyphenol-rich bio-products
Databáze: OpenAIRE
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