Green extraction of polyphenols from whole pomegranate fruit using cyclodextrins. 2017

Amalia C Diamanti, and Panagiotis E Igoumenidis, and Ioannis Mourtzinos, and Konstantina Yannakopoulou, and Vaios T Karathanos
Laboratory of Chemistry - Biochemistry - Physical Chemistry of Foods, Department of Nutrition & Dietetics, Harokopion University, 70 El. Venizelou Str., Kallithea, 17671 Athens, Greece.

Pomegranate is a source of bioactive phytochemicals. The objective of this study was the derivation of a sustainable method to exploit the whole fruit, both edible and non-edible parts, as a source of polyphenols. Pomegranate peel contains a 10-fold higher phenolic content than the pulp. The fruit was freeze-dried and the resulting dry matter was extracted with solid-liquid percolation equipment using non-toxic and eco-friendly extraction solvents: either deionized water or aqueous solutions of cyclodextrins. Cyclodextrins (CDs) are known molecular encapsulators and our results prove enhancement of the extraction of pomegranate polyphenols by 20%. In order to examine the formation of inclusion complexes between CD's and polyphenols of the extract, polyphenols were isolated using solid-phase extraction. NMR studies with the purified extracts and the individual CDs confirmed inclusion complex formation in water. Pomegranate liquid extracts may be used as raw materials for several end-users in the food, cosmetic and pharmaceutical industries.

UI MeSH Term Description Entries
D010936 Plant Extracts Concentrated pharmaceutical preparations of plants obtained by removing active constituents with a suitable solvent, which is evaporated away, and adjusting the residue to a prescribed standard. Herbal Medicines,Plant Extract,Extract, Plant,Extracts, Plant,Medicines, Herbal
D003505 Cyclodextrins A homologous group of cyclic GLUCANS consisting of alpha-1,4 bound glucose units obtained by the action of cyclodextrin glucanotransferase on starch or similar substrates. The enzyme is produced by certain species of Bacillus. Cyclodextrins form inclusion complexes with a wide variety of substances. Cycloamylose,Cyclodextrin,Cyclodextrin Derivatives,Cyclomaltooligosaccharides,Derivatives, Cyclodextrin
D005638 Fruit The fleshy or dry ripened ovary of a plant, enclosing the seed or seeds. Berries,Legume Pod,Plant Aril,Plant Capsule,Aril, Plant,Arils, Plant,Berry,Capsule, Plant,Capsules, Plant,Fruits,Legume Pods,Plant Arils,Plant Capsules,Pod, Legume,Pods, Legume
D055772 Green Chemistry Technology Pollution prevention through the design of effective chemical products that have low or no toxicity and use of chemical processes that reduce or eliminate the use and generation of hazardous substances. Environmentally Friendly Chemical Techniques,Environmentally Friendly Chemical Technology,Environmentally Friendly Chemistry Technology,Green Chemical Techniques,Sustainable Chemistry Technology,Chemical Technique, Green,Chemical Techniques, Green,Chemistry Technologies, Green,Chemistry Technologies, Sustainable,Chemistry Technology, Green,Chemistry Technology, Sustainable,Green Chemical Technique,Green Chemistry Technologies,Sustainable Chemistry Technologies,Technique, Green Chemical,Techniques, Green Chemical,Technologies, Green Chemistry,Technologies, Sustainable Chemistry,Technology, Green Chemistry,Technology, Sustainable Chemistry
D059808 Polyphenols A large class of organic compounds having more than one PHENOL group. Polyphenol,Provinols
D029561 Lythraceae The loosestrife plant family of the order Myrtales, subclass Rosidae, class Magnoliopsida. Members are mainly herbs and many of them contain ALKALOIDS. Punicaceae
D064209 Phytochemicals A broad range of biologically active compounds which occur naturally in plants having important medicinal and nutritional properties. Dietary Phytochemical,Plant Bioactive Compound,Plant Biologically Active Compound,Plant-Derived Chemical,Plant-Derived Compound,Bioactive Coumpounds, Plant,Biologically Active Coumpounds, Plant,Dietary Phytochemicals,Phytochemical,Phytonutrient,Phytonutrients,Plant Bioactive Compounds,Plant Biologically Active Compounds,Plant-Derived Chemicals,Plant-Derived Compounds,Bioactive Compound, Plant,Bioactive Compounds, Plant,Chemical, Plant-Derived,Chemicals, Plant-Derived,Compound, Plant Bioactive,Compound, Plant-Derived,Compounds, Plant Bioactive,Compounds, Plant-Derived,Coumpounds, Plant Bioactive,Phytochemical, Dietary,Phytochemicals, Dietary,Plant Bioactive Coumpounds,Plant Derived Chemical,Plant Derived Chemicals,Plant Derived Compound,Plant Derived Compounds

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