Characterization of secondary metabolites from the berries of Ziziphus mucronata and their antioxidant properties

2019 ◽  
pp. 1-4
Author(s):  
Fasahat Parkar ◽  
Alice Wanjiku Njue ◽  
Moses Kiprotich Langat ◽  
Josiah Ouma Omolo
2019 ◽  
pp. 1-5
Author(s):  
Chia-Lin Lee ◽  
Kuo-Chen Liao ◽  
Chien-Chih Chen ◽  
Yen-An Lin ◽  
Tung-Ying Wu ◽  
...  

2021 ◽  
Vol 11 (13) ◽  
pp. 5965
Author(s):  
Christian A. Pensamiento-Niño ◽  
Rafael G. Campos-Montiel ◽  
Javier Añorve-Morga ◽  
Esther Ramírez-Moreno ◽  
Juan A. Ascacio-Valdés ◽  
...  

Flowers have traditionally been used in the production of various dishes to improve the sensory aspects of food. In this study, the nutritional and functional composition of cactus flowers was evaluated for their possible use in the food industry. The objective of this research was also to identify the main secondary metabolites of flowers by HPLC/ESI/MS analyses. The findings indicated that the most abundant components of the flowers were carbohydrates, followed by ash and proteins. The highest antioxidant capacity, assessed by DPPH• and ABTS•+ assays, was observed in Echinocereus cinerascens, with values of 255.08 and 392.65 µM Trolox equivalents (TE)/g, respectively. These values were also correlated with a high content of phenolic compounds. Forty-four secondary metabolites were detected in total, of which the most predominant corresponded to compounds such as quercetin and isorhamnetin, as well as their derivatives, protocatechuic acid and apigenin. This study indicates that Cactaceae flowers could be a source of nutrients; in addition, the diversity of compounds and their good antioxidant properties suggest that they should be considered as new sources of natural antioxidant compounds in the elaboration of functional products.


RSC Advances ◽  
2015 ◽  
Vol 5 (34) ◽  
pp. 26991-26997 ◽  
Author(s):  
Natália Martins ◽  
Lillian Barros ◽  
Montserrat Dueñas ◽  
Celestino Santos-Buelga ◽  
Isabel C. F. R. Ferreira

The present work aims to characterize and quantify the phenolic composition and to evaluate the antioxidant activity of Glycyrrhiza glabra L. (commonly known as licorice) rhizomes and roots.


2007 ◽  
Vol 100 (4) ◽  
pp. 1620-1629 ◽  
Author(s):  
Pitchaon Maisuthisakul ◽  
Rungnaphar Pongsawatmanit ◽  
Michael H. Gordon

Metabolites ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 321
Author(s):  
Hazem S. Elshafie ◽  
Ippolito Camele

Burkholderia is an important bacterial species which has different beneficial effects, such as promoting the plant growth, including rhizosphere competence for the secretion of allelochemicals, production of antibiotics, and siderophores. In addition, most of Burkholderia species have demonstrated promising biocontrol action against different phytopathogens for diverse crops. In particular, Burkholderia demonstrates significant biotechnological potential as a source of novel antibiotics and bioactive secondary metabolites. The current review is concerned with Burkholderia spp. covering the following aspects: discovering, classification, distribution, plant growth promoting effect, and antimicrobial activity of different species of Burkholderia, shedding light on the most important secondary metabolites, their pathogenic effects, and biochemical characterization of some important species of Burkholderia, such as B. cepacia, B. andropogonis, B. plantarii, B. rhizoxinica, B. glumae, B. caryophylli and B. gladioli.


Molecules ◽  
2021 ◽  
Vol 26 (14) ◽  
pp. 4128
Author(s):  
Gabriella Tamasi ◽  
Claudia Bonechi ◽  
Gemma Leone ◽  
Marco Andreassi ◽  
Marco Consumi ◽  
...  

Prunus persica L. is one of the most important fruit crops in European production, after grapes, apples, oranges and watermelons. Most varieties are rich in secondary metabolites, showing antioxidant properties for human health. The purpose of this study was to develop a chemical analysis methodology, which involves the use of different analytical-instrumental techniques to deepen the knowledge related to the profile of metabolites present in selected cultivars of peaches and nectarines cultivated in the Mediterranean area (Southern Italy). The comparative study was conducted by choosing yellow-fleshed peaches (RomeStar, ZeeLady) and yellow-fleshed nectarines (Nectaross, Venus) from two geographical areas (Piana di Sibari and Piana di Metaponto), and by determining the chemical parameters for the flesh and skin that allow for identification of any distinctive varietal and/or geographical characteristics. A combined analytical and chemometric approach was used, trough rheological, thermogravimetric (TGA), chromatographic (HPLC-ESI-MS), spectroscopic (UV-Vis, ATR-FTIR, NMR) and spectrometric (ToF-SIMS) analysis. This approach allowed us to identify the characterizing parameters for the analysis of a plant matrix so that the developed methodology could define an easily exportable and extendable model for the characterization of other types of vegetable matrices.


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