Comparative evaluation of maceration, microwave and ultrasonic-assisted extraction of phenolic compounds from propolis

Oroian, Mircea; Dranca, Florina; Ursachi, Florin

doi:10.1007/s13197-019-04031-x

Cited by 82 publications

(61 citation statements)

References 37 publications

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“…This process can be achieved by following three basic steps: (a) grinding the plant in small pieces, (b) adding the appropriate solvent in a closed vessel, which will determine the type of compound that is going to be extracted from the sample, allowing soaking for three days at room temperature, and (c) press or strain by filtration to separate the liquid phase [ 49 , 50 ]. Although this may be considered the easiest and simplest method, the requirement of large volumes of organic solvents generates organic wastes that have become an issue, makingnecessarya proper chemical waste management process [ 51 ].…”

Section: Methods For Obtaining Plant Extractsmentioning

confidence: 99%

Green Synthesis of Gold and Silver Nanoparticles from Plant Extracts and Their Possible Applications as Antimicrobial Agents in the Agricultural Area

Henríquez¹,

et al. 2020

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Currently, metal nanoparticles have varied uses for different medical, pharmaceutical, and agricultural applications. Nanobiotechnology, combined with green chemistry, has great potential for the development of novel and necessary products that benefit human health, environment, and industries. Green chemistry has an important role due to its contribution to unconventional synthesis methods of gold and silver nanoparticles from plant extracts, which have exhibited antimicrobial potential, among other outstanding properties. Biodiversity-rich countries need to collect and convert knowledge from biological resources into processes, compounds, methods, and tools, which need to be achieved along with sustainable use and exploitation of biological diversity. Therefore, this paper describes the relevant reported green synthesis of gold and silver nanoparticles from plant extracts and their capacity as antimicrobial agents within the agricultural field for fighting against bacterial and fungal pathogens that can cause plant, waterborne, and foodborne diseases. Moreover, this work makes a brief review of nanoparticles’ contribution to water treatment and the development of “environmentally-friendly” nanofertilizers, nanopesticides, and nanoherbicides, as well as presenting the harmful effects of nanoparticles accumulation in plants and soils.

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Section: Methods For Obtaining Plant Extractsmentioning

confidence: 99%

Green Synthesis of Gold and Silver Nanoparticles from Plant Extracts and Their Possible Applications as Antimicrobial Agents in the Agricultural Area

Henríquez¹,

et al. 2020

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“…1 filter, concentrated using a rotary evaporator and freeze-dried (D-37520 Osterode, Germany), being kept at 4 °C until further investigations. Total phenolic compounds and total flavonoids of the extract were measured according to Mcdonald [ 23 ] and Zhishen [ 24 ] as 153 ± 11.08 and 81.46 ± 6.11 mg g −1 extract, respectively.…”

Section: Methodsmentioning

confidence: 99%

Oregano (Origanum vulgare) Extract Enhances Zebrafish (Danio rerio) Growth Performance, Serum and Mucus Innate Immune Responses and Resistance against Aeromonas hydrophila Challenge

Rashidian

Boldaji

Rainis³

et al. 2021

Animals

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This study evaluated the dietary effects of an ultrasound-assisted extract of Origanum vulgare on the growth, antioxidant and immune responses (serum and mucosal) and resistance of zebrafish (Danio rerio) against Aeromonas hydrophila. Four hundred and forty adult zebrafish were distributed into 12 tanks and fed 4 experimental diets including 0% (control), 0.5% (M1), 1% (M2) and 2% (M3) of the extract per kg−1 diet for eight weeks. Fish were then challenged with A. hydrophila and mortality was recorded for 10 days. Results revealed that the extract exerted potent effects on growth parameters of weight gain and specific growth rate. The feed conversion ratio was significantly lower in fish fed extract-incorporated diets. O. vulgare extract improved antioxidant and immune responses, resulting in less sensitivity to oxidative stress and a higher survival rate when challenged with A. hydrophila. Overall, the greatest effects were observed in individuals with 1% dietary inclusion of the extract. These results suggest that the extract from the plant Origanum vulgare possesses a great potential to be used in the aquaculture industry and that zebrafish is an appropriate model for nutrition studies.

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“…The separation was carried out on a Zorbax SP-C18 column, with 150 mm length, 4.6 mm i.d., 5 µm-diameter particle and thermostated at 25 • C. The sample volume injection was 10 µL. For the separation of phenolics, we used two mobile phases: A (0.1% acetic acid in water) and B (acetonitrile), respectively, using the following gradient: min 0 -A 100%, min 6.66 -B 5%, min 66.66 -B 40% and min 74 -B 80% [19][20][21]. The solvent flow rate was 1 mL/min.…”

Section: Individual Phenolics Separation and Detectionmentioning

confidence: 99%

Ultrasound-Assisted Extraction of Polyphenols from Crude Pollen

2020

Self Cite

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The aim of this study was to evaluate the extraction efficiency of polyphenols from crude pollen by an ultrasonic process. Prior to the polyphenols extraction, the crude pollen was defatted. The extraction from defatted pollen was carried out by varying four extraction parameters: ultrasonic amplitude (20%, 60% and 100%), solid/liquid ratio (10 g/L, 20 g/L and 30 g/L), temperature (35, 50 and 65 °C) and time (10, 20 and 30 min). The extracts were analyzed in terms of extraction yield (%), total phenolic content (TPC) and total flavones content (TFC). The extracted oil was analyzed in terms of fatty acids composition; myristic acid (159.1 µg × g−1) and cis-14-pentadecenoic acid (106.6 µg·g−1) were found in the highest amount in the pollen oil. The optimum conditions of extraction were determined and were, as follows: 100% amplitude of ultrasonic treatment, 30 g/L solid/liquid ratio, 40.85 °C and 14.30 min, which led to the extraction of 366.1 mg GAE/L of TPC and 592.2 mg QE/g of TFC, and also to an extraction yield of 1.92%.

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Comparative evaluation of maceration, microwave and ultrasonic-assisted extraction of phenolic compounds from propolis

Cited by 82 publications

References 37 publications

Green Synthesis of Gold and Silver Nanoparticles from Plant Extracts and Their Possible Applications as Antimicrobial Agents in the Agricultural Area

Green Synthesis of Gold and Silver Nanoparticles from Plant Extracts and Their Possible Applications as Antimicrobial Agents in the Agricultural Area

Oregano (Origanum vulgare) Extract Enhances Zebrafish (Danio rerio) Growth Performance, Serum and Mucus Innate Immune Responses and Resistance against Aeromonas hydrophila Challenge

Ultrasound-Assisted Extraction of Polyphenols from Crude Pollen

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