Ultrasound assisted extraction of polyphenols from black chokeberry

D’Alessandro, Leandro Galván; Kriaa, Karim; Nikov, Iordan; Dimitrov, Krasimir

doi:10.1016/j.seppur.2012.03.024

Cited by 280 publications

(168 citation statements)

References 33 publications

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“…This is a very simple method with relatively low cost, and it can be used on both small laboratory and large industrial scale [84,85]. The use of UAE has been widely used in the last years in the extraction of polyphenols from diferent parts of plants such as leaves, stems, stalks, fruits, seeds [85][86][87][88][89][90][91][92][93]. In general, the experimental procedure involves the use of ultrasounds with frequencies ranging from 20 to 2000 kHz, which increases the permeability of cell walls and produces cavitation.…”

Section: The Ultrasound-assisted Extraction (Uae) Methodsmentioning

confidence: 99%

Phenolics in Foods: Extraction, Analysis and Measurements

Aires¹

2017

Phenolic Compounds - Natural Sources, Importance and Applications

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The increasing consumers demands to acquire healthier fruits and vegetables as well as the urgency in looking to natural compounds with antioxidant activity and enhanced antimicrobial activity against antibiotic-resistant pathogenic bacterial strains have encouraged a quick expansion of research studies about enhanced phenolic extraction and identiication methods. Considering the importance of phenolics as natural compounds with antioxidant and antimicrobial activity, this chapter aims to present the most updated information about extraction methods, ranging from the traditional to the most advanced processes, as well as the access to the modern methods used in the identiication and quantiication of phenolics. The main goal of this chapter is to provide the reader with a broad view on the diferent protocols used to extract, identify and quantify phenolic compounds from diferent kinds of foods, including fruits and vegetables.Keywords: phytochemicals, extraction, determination, colorimetric methods, HPLC, HPLC-MS IntroductionThe growing resistance of pathogenic bacterial isolates against the traditional chemical antibiotics as well as the resurgent of old disappeared diseases associated with the constant consumers' demanding of healthier, nutritious and safe food has led the researchers to focus on searching for new, safe and efective molecules. One class of such molecules is the class of polyphenols. Polyphenols are a ubiquitous class of compounds largely present in plants as their secondary metabolites, which are synthesized during their normal development [1] in response to several stressful biotic and abiotic factors [2,3]. This class of compounds are a much diversiied group derived from the amino acids phenylalanine and tyrosine and The results from the last decade's research have shown that polyphenols have important beneicial properties for human health, including antioxidative, antiaging, antibacterial and antimutagenic [7][8][9][10][11]. Moreover, the recent evidence of their interaction with proteins, DNA and other biological molecules has enhanced their exploitation for the production of new natural product-derived therapeutic agents. Despite these advantages, several limitations still persist, particularly those related with their extraction eiciency, which afects the large-scale use of some of these substances. The diiculties in screening, extracting, separation and purifying these compounds have increased the development of new and modern methods to address these limitations. In this context, the aim of this chapter is to present an updated review about sources, technologies and methods that have been developed until now to improve the extraction, detection, separation and full characterization of such beneicial compounds, with special emphasis to their possible application in the design of nutraceuticals and functional food products. Foods as natural resources of phenolicsPolyphenols have been exhaustively studied in their diferent natural matrices such as fruits, vegetables, teas, algae a...

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Section: The Ultrasound-assisted Extraction (Uae) Methodsmentioning

confidence: 99%

Phenolics in Foods: Extraction, Analysis and Measurements

Aires¹

2017

Phenolic Compounds - Natural Sources, Importance and Applications

View full text Add to dashboard Cite

show abstract

“…Pan et al [26] reported higher extraction rates as compared to a conventional extraction process. However, in practice it is not advisable to use a prolonged treatment in a continuous mode, since it may cause the degradation and/or oxidation of the phenolic compounds, as a consequence of the generation of highly reactive hydroxyl radicals, when using high frequencies (358 and 850 kHz) or high powers (750 W) [27].…”

Section: Operation Equipment Mode and Frequencymentioning

confidence: 99%

“…Hydrophilic substances are found mainly in cell vacuoles, while others such as the majority of lignins, flavonoids, and water insoluble polyphenols are deposited in the cell wall through hydrophobic bonds with proteins and polysaccharides [27]. It is for this reason that the extraction solvent must be selected according to the solubility of the compounds to which the process is directed.…”

Section: Effect Of the Solventmentioning

confidence: 99%

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Ultrasound Assisted Extraction for the Recovery of Phenolic Compounds from Vegetable Sources

Medina-Torres¹,

et al. 2017

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Vegetable sources and agro-industrial residues represent an important source of phenolic compounds that are useful in a wide range of applications, especially those with biological activities. Conventional techniques of phytochemical extraction have been associated with a high consumption of organic solvents that limits the application of bioactive extracts, leading to the implementation of novel extraction technologies using mechanisms such as Ultrasound Assisted Extraction (UAE). In the present review, an analysis of the involved variables in the extraction yield of phenolic compounds through UAE is presented, highlighting the advantages of this technology based on the results obtained in various optimized studies. A comparison with other technologies and a proposal of its possible application for agro industrial residues as raw material of phenolic compounds is also indicated. Finally, it is concluded that UAE is a technology that is placed within the area of Sustainable Chemistry since it promotes the use of renewable raw materials through the extraction of phenolic compounds, implementing the substitution of organic solvents with solvents that do not present toxic effects, lowering the energy consumption when compared to conventional methods and minimizing process times and temperatures, which is useful for the extraction of thermo-labile compounds.

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“…Considering that polyphenols from different plants vary widely in their structure, it is not possible to establish a standard extraction protocol that would extract all targeted compounds from each plant source (Bucić-Kojić et al, 2011). In the recent studies, different procedures for polyphenols extraction were developed and they vary in mechanism, nature of plant material, solvent type, solid/solvent ratio, time, temperature, pressure and solvent pH (Ben El Hadj Ali et al, 2014;Bucić-Kojić et al, 2011;Cam and Hisil, 2010;Galvan d'Alessandro et al, 2012). Traditional procedures for obtaining plant extracts include maceration, percolation, digestion and Soxhlet extraction (Vuleta et al, 2012;Wang and Weller, 2006).…”

Section: Introductionmentioning

confidence: 99%

Polyphenols extraction from plant sources

Jovanović¹,

Petrović²,

Ðordjevic³

et al. 2017

Lek sirovine

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Different conventional (maceration and heat-assisted extraction) and new alternative techniques (ultrasound-assisted and microwave-assisted extractions) have been developed for the extraction of polyphenols compounds from different plant sources. Novel procedures have established with the aim to reduce the extraction time and solvent consumption, as well as to increase polyphenols yield and to improve extract quality. A critical review was conducted to introduce and compare traditional and modern procedures applied for extraction of bioactive polyphenols compounds. This review focuses on the different techniques of polyphenols extraction, discussing their operating conditions, mechanism, choice of particle size and solvent, solid/solvent ratio, extraction time, advantages/disadvantages and effectiveness. Finally, potential application of these extraction procedures in polyphenols isolation is reviewed.

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Ultrasound assisted extraction of polyphenols from black chokeberry

Cited by 280 publications

References 33 publications

Phenolics in Foods: Extraction, Analysis and Measurements

Phenolics in Foods: Extraction, Analysis and Measurements

Ultrasound Assisted Extraction for the Recovery of Phenolic Compounds from Vegetable Sources

Polyphenols extraction from plant sources

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