Journal ArticleDOI
Detection of Phloridzin in Strawberries (Fragaria X Ananassa Duch.) by HPLC-PDA-MS/MS and NMR Spectroscopy
Petra Hilt,Andreas Schieber,Caner Yildirim,Gabi Arnold,Iris Klaiber,Jürgen Conrad,Uwe Beifuss,Reinhold Carle +7 more
TLDR
This first report on the occurrence of phloridzin in strawberries is of particular interest for the authenticity control of strawberry products such as juices, jams, and fruit preparations since phlorodzin has so far been used for the detection of fraudulent admixtures.Abstract:
The phenolic profile of strawberry fruits (Fragaria x ananassa Duch., Rosaceae) was investigated by high-performance liquid chromatography with photodiode array detection. A peak displaying retention time and UV spectral data identical to those of phloridzin (phloretin 2‘-O-β-d-glucoside), a dihydrochalcone glucoside so far considered characteristic of apples, was monitored. For further characterization, crude extracts of strawberries were purified on polyamide, and the target compound was isolated by preparative and analytical HPLC. Structure elucidation was performed on the basis of APCI- and ESI-MS in the negative ion mode as well as by 1D and 2D NMR spectroscopy using authentic phloridzin for comparison. The d-configuration of the sugar moiety was established by HPLC analysis of the corresponding acyclic 1-deoxy-1-(N-acetyl-α-methylbenzylamino)alditol acetate. Apart from its chemotaxonomic relevance, this first report on the occurrence of phloridzin in strawberries is of particular interest for the au...read more
Citations
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Journal ArticleDOI
Polyphenol screening of pomace from red and white grape varieties (Vitis vinifera L.) by HPLC-DAD-MS/MS.
TL;DR: It is confirmed that both skins and seeds of most grape cultivars constitute a promising source of polyphenolics, and this is the first study presenting comprehensive data on the contents of individual phenolic compounds comprising all polyphenolic subclasses of grapes.
Journal ArticleDOI
Lab and pilot-scale ultrasound-assisted water extraction of polyphenols from apple pomace
Daniella Pingret,Daniella Pingret,Anne-Sylvie Fabiano-Tixier,Anne-Sylvie Fabiano-Tixier,Carine Le Bourvellec,Carine Le Bourvellec,Catherine M.G.C. Renard,Catherine M.G.C. Renard,Farid Chemat,Farid Chemat +9 more
TL;DR: In this paper, an apple pomace was submitted to an Ultrasound-Assisted Extraction (UAE) in order to produce extracts rich in antioxidants, which was confirmed by HPLC analysis, that revealed main polyphenols were not degraded under the applied conditions.
Journal ArticleDOI
Identification of flavonol and xanthone glycosides from mango (Mangifera indica L. Cv. "Tommy Atkins") peels by high-performance liquid chromatography-electrospray ionization mass spectrometry.
TL;DR: The results obtained in the present study confirm that peels originating from mango fruit processing are a promising source of phenolic compounds that might be recovered and used as natural antioxidants or functional food ingredients.
Journal ArticleDOI
Phloridzin: biosynthesis, distribution and physiological relevance in plants.
TL;DR: The phenolic compound phloridzin is a prominent member of the chemical class of dihydrochalcones, which are phenylpropanoids and the effect on human health - especially diabetes - and membrane permeability is well documented.
Journal ArticleDOI
Apple polyphenols, phloretin and phloridzin: new trapping agents of reactive dicarbonyl species.
TL;DR: The results suggest that dietary flavonoids that have the same A ring structure as phloretin may have the potential to trap reactive dicarbonyl species and therefore inhibit the formation of AGEs.
References
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Journal ArticleDOI
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Content of the Flavonols Quercetin, Myricetin, and Kaempferol in 25 Edible Berries
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TL;DR: The applicability of the analytical system for the authenticity control of apple and pear juice was demonstrated by determination of characteristic quercetin and isorhamnetin glycosides, and dihydrochalcones, respectively.
Journal ArticleDOI
Content of flavonols and selected phenolic acids in strawberries and Vaccinium species: influence of cultivar, cultivation site and technique
S. Häkkinen,A. R. Törrönen +1 more
TL;DR: In this article, the amounts of flavonols (quercetin, myricetin and kaempferol) and phenolic acids (ellagic, p-coumaric, caffeic and ferulic acids) were analyzed in six strawberry cultivars and in the berries of genus Vaccinium (four blueberry cultivars, wild bilberry, wild bog whortleberry).
Journal ArticleDOI
Phenolics of apple, pear, and white grape juices and their changes with processing and storage. A review
TL;DR: In this paper, the importance of phenolics in fruit juices, the factors that affect the phenolic composition of fruit juices and the improvements in the techniques that have been employed in the analysis of phenolic compounds.