Protein-precipitating capacity of bearberry-leaf (Arctostaphylos uva-ursi L. Sprengel) polyphenolics

Naczk, M.; Pegg, Ronald B.; Amarowicz, Ryszard

doi:10.1016/j.foodchem.2010.08.003

Cited by 13 publications

(10 citation statements)

References 34 publications

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“…Tannins and flavonoids are secondary metabolites that are widely distributed in the plant kingdom and that exhibit various biological properties [ 24 ].…”

Section: Resultsmentioning

confidence: 99%

Evaluation of Antioxidant, Antidiabetic and Anticholinesterase Activities of Smallanthus sonchifolius Landraces and Correlation with Their Phytochemical Profiles

Russo

Valentão

Andrade

et al. 2015

IJMS

115

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The present study aimed to investigate the phytochemical profile of leaf methanol extracts of fourteen Smallanthus sonchifolius (yacon) landraces and their antioxidant, anticholinesterase and antidiabetic activities that could lead to the finding of more effective agents for the treatment and management of Alzheimer’s disease and diabetes. For this purpose, antioxidant activity was assessed using different tests: ferric reducing ability power (FRAP), 2,2-diphenyl-1-picryl hydrazyl (DPPH), nitric oxide (˙NO) and superoxide (O2˙−) scavenging and lipid peroxidation inhibition assays. Anticholinesterase activity was investigated by quantifying the acetylcholinesterase (AChE) and butyrylcholinesterase (BChE) inhibitory activities, whereas antidiabetic activity was investigated by α-amylase and α-glucosidase inhibition tests. To understand the contribution of metabolites, phytochemical screening was also performed by high performance liquid chromatography-diode array detector (HPLC-DAD) system. Among all, methanol extract of PER09, PER04 and ECU44 landraces exhibited the highest relative antioxidant capacity index (RACI). ECU44 was found to be rich in 4,5-di-O-caffeoylquinic acid (CQA) and 3,5-di-O-CQA and displayed a good α-amylase and α-glucosidase inhibition, showing the lowest IC50 values. Flavonoids, instead, seem to be involved in the AChE and BChE inhibition. The results of this study revealed that the bioactive compound content differences could be determinant for the medicinal properties of this plant especially for antioxidant and antidiabetic activities.

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“…Tannins and flavonoids are secondary metabolites that are widely distributed in the plant kingdom and that exhibit various biological properties [ 24 ].…”

Section: Resultsmentioning

confidence: 99%

Evaluation of Antioxidant, Antidiabetic and Anticholinesterase Activities of Smallanthus sonchifolius Landraces and Correlation with Their Phytochemical Profiles

Russo

Valentão

Andrade

et al. 2015

IJMS

115

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show abstract

“…These different results could have been caused by the different polyphenols present in the 2 different extracts, which would have different abilities to hydrogen bond, and therefore alter WVP of the SPI films. Researchers have pointed out that the nature of the chemical structure, polarity, and size of polyphenols play a role in polyphenol–proteininteractions (Frazier and others 2003; Nazck and others 2006, 2011).…”

Section: Resultsmentioning

confidence: 99%

The Impact of Anthocyanin‐Rich Red Raspberry Extract (ARRE) on the Properties of Edible Soy Protein Isolate (SPI) Films

Wang

Marcone

Barbut

et al. 2012

Journal of Food Science

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This study characterizes the potential physicochemical changes of SPI film with incorporated raspberry extract. Upon the above modification, the resultant film was found to enhance the applications of pure SPI film in food packaging. For example, SPI-ARRE film could prolong the usage life of SPI film due to increased strength, or could be useful as a desiccant (drying agent) such as a water-absorbing sheet for preserving dried foods due to its increased hydrophilic surface and water-swelling ratio. SPI-ARRE film could also be alternately used as a food wrap with unique color.

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“…Bearberry ( Arctostaphylos uva-ursi L. Sprengel) is a ubiquitous procumbent evergreen shrub located throughout North America, Asia, and Europe. The fruits are almost tasteless despite containing a high concentration of active ingredients in many commercial products [ 5 ]. The antioxidant potential of bearberry leaves (BL) has been studied by numerous chemical assays including reducing power assay, radical scavenging activity using 2,2-diphenyl-1-picrylhydrazyl (DPPH), liposome model, scavenging hydroxyl radicals (HO), and linoleic acid model system [ 6 , 7 ].…”

Section: Introductionmentioning

confidence: 99%

Study of the Properties of Bearberry Leaf Extract as a Natural Antioxidant in Model Foods

et al. 2016

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The common bearberry (Arctostaphylos uva-ursi L. Sprengel) is a ubiquitous procumbent evergreen shrub located throughout North America, Asia, and Europe. The fruits are almost tasteless but the plant contains a high concentration of active ingredients. The antioxidant activity of bearberry leaf extract in the 2,2′-azino-bis-3-ethylbenzothiazoline-6-sulphonic acid (ABTS) radical cation assay was 90.42 mmol Trolox equivalents/g dry weight (DW). The scavenging ability of the methanol extract of bearberry leaves against methoxy radicals generated in the Fenton reaction was measured via electron paramagnetic resonance. Lipid oxidation was retarded in an oil–water emulsion by adding 1 g/kg lyophilised bearberry leaf extract. Also, 1 g/kg of lyophilised bearberry leaf extract incorporated into a gelatin-based film displayed high antioxidant activity to retard the degradation of lipids in muscle foods. The present results indicate the potential of bearberry leaf extract for use as a natural food antioxidant.

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Protein-precipitating capacity of bearberry-leaf (Arctostaphylos uva-ursi L. Sprengel) polyphenolics

Cited by 13 publications

References 34 publications

Evaluation of Antioxidant, Antidiabetic and Anticholinesterase Activities of Smallanthus sonchifolius Landraces and Correlation with Their Phytochemical Profiles

Evaluation of Antioxidant, Antidiabetic and Anticholinesterase Activities of Smallanthus sonchifolius Landraces and Correlation with Their Phytochemical Profiles

The Impact of Anthocyanin‐Rich Red Raspberry Extract (ARRE) on the Properties of Edible Soy Protein Isolate (SPI) Films

Study of the Properties of Bearberry Leaf Extract as a Natural Antioxidant in Model Foods

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