Nutrient and phenolic composition of Zespri™ Red Kiwifruit

Aim: This study was designed to investigate the phytochemical profile and the cytotoxic activities of the eco-friendly extracts of olive leaves from Chemlali cultivar. Materials and Methods: The Phenolic composition of olive leaves extracts, the antioxidant activity and the cytotoxic effects against MCF-7 and HepG2 cells were determined. Results: Olive leaves extracts showed relevant total polyphenols contents. Oleuropein was the major detected phenolic compound reaching a concentration of 16.9 mg/ml. The antioxidant potential of the studied extracts varied from 23.7 to 46.5mM Trolox equivalents as revealed by DPPH and ABTS assays. Cytotoxicity experiments showed similar trends for both HepG2 and MCF-7 cells with the infusion extract being the most active. Conclusion: This study denotes that olive leaves may have great potential as endless bioresource of valuable bioactive compounds which may have a wide application.

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LC-DAD-ESI-MS/MS analysis, cytotoxic and antiproliferative effect of chlorogenic acid derivates rich extract from Nerium oleander L. pink flowers

Food & Function ◽

10.1039/d0fo02640a ◽

2021 ◽

Author(s):

Siham Ayouaz ◽

Sheila Cristina Oliveira-Alves ◽

Ana Teresa Serra ◽

Khalef LEFSIH ◽

Madani Samah ◽

...

Keyword(s):

Medicinal Plant ◽

Chlorogenic Acid ◽

Antiproliferative Effect ◽

Nerium Oleander ◽

Phenolic Composition ◽

Esi Ms ◽

Ms Analysis

Nerium oleander L, is a medicinal plant widely used for pharmaceutical purposes. In this work the pink flowers of this plant were characterized in terms of phenolic composition by LC-DAD-ESI-MS/MS...

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Phenolic Composition and Antioxidant Activity of Plants Belonging to the Cephalaria (Caprifoliaceae) Genus

Plants ◽

10.3390/plants10050952 ◽

2021 ◽

Vol 10 (5) ◽

pp. 952

Author(s):

Małgorzata Chrząszcz ◽

Barbara Krzemińska ◽

Rafał Celiński ◽

Katarzyna Szewczyk

Keyword(s):

Antioxidant Activity ◽

Lung Diseases ◽

Antioxidative Activity ◽

Biological Activities ◽

Natural Antioxidants ◽

Antioxidant Effect ◽

In Vivo Studies ◽

Phenolic Composition

The genus Cephalaria, belonging to the Caprifoliaceae family, is a rich source of interesting secondary metabolites, including mainly saponins which display a variety of biological activities, such as immunomodulatory, antimicrobial and hemolytic effects. Besides these compounds, flavonoids and phenolic acids were identified in Cephalaria species. Cephalaria is employed in traditional medicine e.g., to cure cardiac and lung diseases, rheumatism, and regulate menstruation. In this review we focus on the phenolic compound composition and antioxidative activity of Cephalaria species. The antioxidant effect can be explained by flavonoids present in all parts of these plants. However, future efforts should concentrate more on in vitro and in vivo studies and also on clinical trials in order to confirm the possibility of using these plants as natural antioxidants for the pharmacology, food or cosmetic industries.

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Differences in the phenolic composition and nutraceutical properties of freeze dried and oven-dried wild and domesticated samples of Sanguisorba minor Scop

LWT ◽

10.1016/j.lwt.2021.111335 ◽

2021 ◽

pp. 111335

Author(s):

Costanza Ceccanti ◽

Tiane C. Finimundy ◽

Sandrina A. Heleno ◽

Tania C.S.P. Pires ◽

Ricardo C. Calhelha ◽

...

Keyword(s):

Phenolic Composition ◽

Freeze Dried ◽

Sanguisorba Minor ◽

Nutraceutical Properties

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A Study of Overripe Seed Byproducts from Sun-Dried Grapes by Dispersive Raman Spectroscopy

Foods ◽

10.3390/foods10030483 ◽

2021 ◽

Vol 10 (3) ◽

pp. 483

Author(s):

Francisco J. Rivero ◽

Leonardo Ciaccheri ◽

M. Lourdes González-Miret ◽

Francisco J. Rodríguez-Pulido ◽

Andrea A. Mencaglia ◽

...

Keyword(s):

Raman Spectroscopy ◽

Spectroscopic Data ◽

Principal Component ◽

Industrial Applications ◽

Phenolic Composition ◽

Grape Seeds ◽

Detection Scheme ◽

Sun Drying ◽

Dried Grapes ◽

Excitation Laser

Overripe seeds from sun-dried grapes submitted to postharvest dehydration constitute a scarcely investigated class of vinification byproduct with limited reports on their phenolic composition and industrial applications. In this study, Raman spectroscopy was applied to characterize a selection of overripe seed byproducts from different white grapes (cv. Moscatel, cv. Pedro Ximénez and cv. Zalema) submitted to postharvest sun drying. The Raman measurements were taken using a 1064 nm excitation laser in order to mitigate the fluorescent effect and the dispersive detection scheme allowed a compactness of the optical system. Spectroscopic data were processed by a principal component analysis to reduce the dimensionality and partner recognition. The evolution of the Raman spectrum during the overripening process was compared with the phenolic composition of grape seeds, which was determined by rapid resolution liquid chromatography/mass spectrometry (RRLC/MS). A multivariate processing of the spectroscopic data allowed the classification of overripe seeds according to the grape variety and the monitoring of stages of the postharvest sun drying process.

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Comparison of Three Accelerated Oxidation Tests Applied to Red Wines with Different Chemical Composition

Molecules ◽

10.3390/molecules26040815 ◽

2021 ◽

Vol 26 (4) ◽

pp. 815

Author(s):

Francesca Coppola ◽

Luigi Picariello ◽

Martino Forino ◽

Luigi Moio ◽

Angelita Gambuti

Keyword(s):

Red Wine ◽

Phenolic Composition ◽

Red Wines ◽

Initial Composition ◽

Accelerated Oxidation ◽

Before And After ◽

Saturation Method ◽

Lower Variability ◽

Wine Oxidation ◽

Wine Color

Background: Three accelerated oxidation tests were proposed to simulate red wine oxidation thus providing information useful to correctly manage moderate oxygen exposure of wine during aging in regard to phenolic composition and wine color. Since the results of the tests have never been compared on wines with different initial composition, the aim of this study was to find a suitable method to simulate oxidation of any still red wine. Methods: Aglianico, Barbera, Gaglioppo, Magliocco, and Nerello wines were treated with (1) three cycles of air saturation, (2) the addition of hydrogen peroxide, and (3) the addition of acetaldehyde. Changes in chromatic characteristics and phenolic composition were determined by spectrophotometric and HPLC methods. Results: Important differences in the behavior of the different wines were detected: the highest formation of polymeric pigments was observed in Barbera and Aglianico wines. In contrast, Gaglioppo and Magliocco wines showed a lower variability before and after the oxidation probably due to the lower anthocyanin/tannin ratio. Among the accelerated oxidation tests applied, no significant differences in color parameters and phenolic composition were detected in samples treated with the addition of H2O2 and the air saturation method. Conclusion: The study demonstrated that H2O2 addition is a successful tool to predict the evolution of different phenolic compounds during the air saturation treatment of wines.

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