Evaluation of antioxidant and antibacterial activities of methanolic extract of medlar (<i>Mespilus germanica</i> L.) leaves

Safari, Moein; Ahmady‐Asbchin, Salman

doi:10.1080/13102818.2019.1577701

Cited by 40 publications

(35 citation statements)

References 31 publications

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“…Such biologically active compounds can be extracted by means of organic solvents extractions (e.g., water, ethanol, and methanol) [ 118 ], membrane processes [ 119 ], among other emerging extraction technologies (e.g., high-voltage electrical discharges, microwave-assisted extraction, ultrasound-assisted extraction, and pulsed ohmic heating) [ 120 ]. Once the active compounds have been successfully extracted, their importance relies on their potential antioxidant activity together with inhibitory effect against bacteria and fungi [ 121 ], especially phenolic compounds (e.g., catechin, rutin, kaempferol, and chlorogenic, caffeic, and ferulic acids) [ 122 ]. Importantly, the characteristics and properties of the CS-based edible films and coatings may change with the addition of the natural extracts.…”

Section: Advances In Chitosan-based Edible Films and Coatingsmentioning

confidence: 99%

Trends in Chitosan as a Primary Biopolymer for Functional Films and Coatings Manufacture for Food and Natural Products

Díaz‐Montes

Castro-Muñoz

2021

Polymers

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Some of the current challenges faced by the food industry deal with the natural ripening process and the short shelf-life of fresh and minimally processed products. The loss of vitamins and minerals, lipid oxidation, enzymatic browning, and growth of microorganisms have been the main issues for many years within the innovation and improvement of food packaging, which seeks to preserve and protect the product until its consumption. Most of the conventional packaging are petroleum-derived plastics, which after product consumption becomes a major concern due to environmental damage provoked by their difficult degradation. In this sense, many researchers have shown interest in edible films and coatings, which represent an environmentally friendly alternative for food packaging. To date, chitosan (CS) is among the most common materials in the formulation of these biodegradable packaging together with polysaccharides, proteins, and lipids. The good film-forming and biological properties (i.e., antimicrobial, antifungal, and antiviral) of CS have fostered its usage in food packaging. Therefore, the goal of this paper is to collect and discuss the latest development works (over the last five years) aimed at using CS in the manufacture of edible films and coatings for food preservation. Particular attention has been devoted to relevant findings in the field, together with the novel preparation protocols of such biodegradable packaging. Finally, recent trends in new concepts of composite films and coatings are also addressed.

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Section: Advances In Chitosan-based Edible Films and Coatingsmentioning

confidence: 99%

Trends in Chitosan as a Primary Biopolymer for Functional Films and Coatings Manufacture for Food and Natural Products

Díaz‐Montes

Castro-Muñoz

2021

Polymers

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“…Also, the inhibitory activity of the plant extracts against the bacteria might be due to iron deprivation or hydrogen bonding with vital proteins needed for the growth of the bacteria (Scalbert, 1991). In addition, Safari and Ahmady-Asbchin (2019) reported that the antibacterial activity of the extract could be attributed to the high content of phenols and flavonoids. In the present study, we also determined that the extracts with higher phenolic content had higher antibacterial activity against tested pathogen bacteria.…”

Section: Antibacterial Activitymentioning

confidence: 99%

Antibacterial and antioxidant activity of pulp, peel and leaves of Feijoa sellowiana: Effect of extraction techniques, solvents and concentration

Karsli¹

2021

Food Health

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The present study evaluated the effect of extraction techniques (ultrasound-assisted extraction (U) and shaking water bath extrac-tion (WB)), solvents (etha-nol, acetone and distilled water) and concentration (2.5% and 5%) on total phe-nolic content (TPC), anti-bacterial and antioxidant activities of extracts ob-tained from feijoa leaves, peel and pulp. The antibac-terial activity of feijoa ex-tracts were tested in vitro against 6 pathogens bacteria by the disc diffusion method and the antioxidant activity was evaluated by 2,2 diphe-nyl-1-picrylhydrazyl radical assay. The results indicated that leaves and peel extracts exhibited stronger antibac-terial activity than that of pulp. In generally, WB-A5%, WB-W5%, U-A5% and U-W 5% extracted with acetone (A) and water (W) at 5% concentration from feijoa leaves, peel and pulp showed more antibacterial activity against all tested pathogen bacteria. The leaves, peel, and pulp ex-tracts had high antioxidant activity with 85.78-90.82%, 89.86-91.60%, and 81.49-91.31%, respectively. Peel extracts had slightly higher antioxidant activity than leaves and pulp extracts. TPC of leaves, peel, and pulp extracts were in the range of 488.99-554.00, 349.17-517, and 115.64-345.46 mg gallic acid equivalents (GAE)/100 g of extract. The overall findings suggested that different part of feijoa (especially leaves and peel) could be used as a natural antibacterial and an-tioxidant for functional foods.

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“…The analysis showed a moderate concentration of phenol and flavonoid content in the leaf extract. Phenols possess high antioxidant activity (Safari and Ahmady-Asbchin, 2019) and contribute hydrogen and react with nitrogen and reactive oxygen compounds acting as an antioxidant (Pereira et al, 2009). Medicinal plants have a copious amount of flavonoids and are considered potential nutraceuticals, They also regulate numerous pathways for diseases like diabetes, neuro-disease, cancers, and other transmittable diseases (Qiu et al, 2018).…”

Section: Quantitative Analysismentioning

confidence: 99%

GC-MS based metabolite profiling and antioxidant activity of solvent extracts of Allium chinense G Don leaves

et al. 2021

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Allium chinense, a main source of “Xiebai” drug in Chinese traditional medicine and commonly known as Ganoderma lucidum belongs to the family Amaryllidaceae. The main focus of this research was to quantify the secondary metabolites, antioxidant potential and study the GC- MS based metabolite profile of different solvent leaf extracts of A. chinense. The reports on the bioactive compounds of A. chinense leaves are still insufficient compared to the bulb; hence this study was carried out to understand the bioactive compounds present in A. chinense leaves using different solvents of varying polarity. Our investigation showed that the ethanol extract contained the highest saponin, flavonoid, phenol, and DPPH scavenging activity. Further, metabolite profiling revealed a total of forty-eight compounds, indicating a diverse range of phytochemicals present in the four extracts. The highest number of compounds were observed in ethanol extract (15) followed by chloroform extract (13), petroleum ether extract (11) and methanol extract (9). Some of the major compounds identified in the four solvents are octacosane (27.11%), heptadecane (19.66%), eicosane (18.51%), ethyl palmitate (18.50%), phytol (17.68%) and phytol acetate (17.30%). In conclusion, this study highlights that A. chinense leaf extracts contain high saponins, terpenes and alkanes which could be a potential source of a new beneficial drug.

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Evaluation of antioxidant and antibacterial activities of methanolic extract of medlar (Mespilus germanica L.) leaves

Abstract: View related articlesView Crossmark data Citing articles: 4 View citing articlesEvaluation of antioxidant and antibacterial activities of methanolic extract of medlar (Mespilus germanica L.) leaves

Cited by 40 publications

References 31 publications

Trends in Chitosan as a Primary Biopolymer for Functional Films and Coatings Manufacture for Food and Natural Products

Trends in Chitosan as a Primary Biopolymer for Functional Films and Coatings Manufacture for Food and Natural Products

Antibacterial and antioxidant activity of pulp, peel and leaves of Feijoa sellowiana: Effect of extraction techniques, solvents and concentration

GC-MS based metabolite profiling and antioxidant activity of solvent extracts of Allium chinense G Don leaves

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