Pressurized Hot Water Extraction of anthocyanins from red onion: A study on extraction and degradation rates

Petersson, Erik V.; Liu, Jiayin; Sjöberg, Per J. R.; Danielsson, Rolf; Turner, Charlotta

doi:10.1016/j.aca.2010.01.023

Cited by 76 publications

(47 citation statements)

References 16 publications

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“…The root matrix may possibly have some other alkaloids or other antioxidants that slow down the degradation of hydrastine. Petersson et al have demonstrated the role of the matrix in the degradation experiments of anthocyanins in red cabbage [13]. Figure 5 shows the relationship between the concentration of the hydrastine standard and time over a temperature range of 100˚C -160˚C.…”

Section: Degradation Behaviormentioning

confidence: 99%

“…In theory, high temperatures could be recommended for shorter extractions times and higher extraction yields but in practice degradation of thermally labile compounds may occur if the temperature used is too high [19]. Studies conducted on extraction and degradation of antioxidants from birch bark [20] and anthocyanins from red onion [13] have been conducted. In the current study, both the extraction and degradation of the thermolabile alkaloids present in goldenseal; hydrastine and berberine, using water as the only extraction solvent were investigated.…”

Section: Introductionmentioning

confidence: 99%

“…The use of pressurized liquid extraction (PLE) is an attractive alternative as it achieves fast extractions that are associated with small volume solvent consumption, and exhibit good potential to automate the extraction procedures [13]. PLE has been reported for the extraction of hydrastine and berberine employing organic solvents [14] that are derived from fossil fuel and have relatively high environmental impact.…”

Section: Introductionmentioning

confidence: 99%

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Pressurized Hot Water Extraction of Alkaloids in Goldenseal

Mokgadi¹,

Turner²,

Torto³

2013

AJAC

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A quick, efficient and environmentally beneficial approach for the extraction of alkaloids in goldenseal based on pressurized hot water extraction (PHWE) is presented. PHWE was evaluated following the extraction of hydrastine and berberine which are the two main alkaloids of goldenseal. The effects of temperature and other parameters on extraction yields were monitored by high performance liquid chromatography coupled to diode array detector (HPLC-DAD). The extraction yields were compared to those achieved through reflux and ultrasonic extraction methods. PHWE employed hot water at an optimal temperature of 140˚C, a pressure of 50 bars and flow rate of 1 mL·min −1 for extraction experiments conducted in the dynamic mode. Both PHWE and conventional methods achieved comparable extraction yields. Reflux and ultrasonic extractions had procedures that were slower (over 6 h) and employed large quantities (200 mL) of organic solvents. The PHWE method was simple and relatively fast as extraction was achieved in 15 min. At 95% confidence level (n = 3), reflux and ultrasonic methods recorded extraction yields that were not significantly different from that of PHWE. Moreover, PHWE employed a more readily available "green" solvent, (water) to achieve comparable results to those of conventional methods which utilized organic solvents. The percentage relative standard deviations (%RSD) for the extraction yields were less than 3% in all cases indicating the high reproducibility of the method. However, when using PHWE to extract thermally labile analytes like alkaloids, degradation effects also occurred. Increasing the temperatures certainly achieved higher extraction yields but also led to degradation of these thermally labile compounds indicating a necessity for optimization.

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Section: Degradation Behaviormentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Pressurized Hot Water Extraction of Alkaloids in Goldenseal

Mokgadi¹,

Turner²,

Torto³

2013

AJAC

Self Cite

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“…Otherwise, few reports can be found, being an interesting research theme to be further studied. Sometimes referred to as subcritical solvent extraction, pressurized solvent extraction (PSE) and accelerated solvent extraction (ASE), Pressurized Liquid Extraction (PLE) has been successfully used for the extraction of several bioactive compounds from different plants (Petersson et al, 2010). A major advantage of PLE over conventional solvent extraction methods conducted at atmospheric pressure is that pressurized solvents remain in a liquid state well above their boiling points, allowing for high-temperature extraction.…”

Section: Coupling Of Adsorptive Columns To Pressurized Fluid Extractomentioning

confidence: 99%

Developing novel one-step processes for obtaining food-grade O/W emulsions from pressurized fluid extracts: processes description, state of the art and perspectives

Santos

Meireles

2015

Food Sci. Technol

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In this work, a novel on-line process for production of food-grade emulsions containing oily extracts, i.e. oil-in-water (O/W) emulsions, in only one step is presented. This process has been called ESFE, Emulsions from Supercritical Fluid Extraction. With this process, emulsions containing supercritical fluid extracts can be obtained directly from plant materials. The aim in the conception of this process is to propose a new rapid way to obtain emulsions from supercritical fluid extracts. Nowadays the conventional emulsion formulation method is a two-step procedure, i.e. first supercritical fluid extraction for obtaining an extract; secondly emulsion formulation using another device. Other variation of the process was tested and successfully validated originating a new acronymed process: EPFE (Emulsions from Pressurized Fluid Extractions). Both processes exploit the supercritical CO2-essential oils miscibility, in addition, EPFE process exploits the emulsification properties of saponin-rich pressurized aqueous plant extracts. The feasibility of this latter process was demonstrated using Pfaffia glomerata roots as source of saponin-rich extract, water as extracting solvent and clove essential oil, directly extracted using supercritical CO2, as a model dispersed phase. In addition, examples of pressurized fluid-based coupled processes applied for adding value to food bioactive compounds developed in the past five years are reviewed.

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“…The dissociation constant of water varies with temperature; this property can be utilized to alter the extraction property of a number of substances. Accordingly, subcritical water has been employed to extract various substances, such as essential oils, proteins, xanthones, anthraquinones, flavonoids, and low-molecular-weight phenolic constituents (Buranov & Mazza 2009, Eikani et al 2007, Ho et al 2007, Kim et al 2010, Kulkarni et al 2008, Ozel et al 2003, Petersson et al 2010, Pongnaravane et al 2006, Pourali et al 2010, Prommuak et al 2008, Sereewatthanawut et al 2008, Srinivas et al 2010. Subcritical water can function as an acid catalyst or base catalyst in chemical reactions because its dissociation constant exceeds that of ambient water; subcritical water dissociates into hydrogen and hydroxyl ions to a greater extent, thereby accelerating the reactions (Wiboonsirikul et al 2007).…”

Section: Introductionmentioning

confidence: 99%

Subcritical Water Extraction of Low-molecular-weight Phenolic Compounds from Oil Palm Biomass

Kawamura

Saary

Hashim

et al. 2014

JARQ

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Subcritical water extraction of low-molecular-weight phenolic compounds from oil palm biomass (trunk, bark, petiole, rachis, leaves, empty fruit bunch fiber, midrib spine leaflets, stalk of fruit bunches, flesh, kernel shells, and albumen) was conducted. It was elucidated that gallic acid, protocatechuicaldehyde, p-hydroxybenzoic acid, p-hydroxybenzaldehyde, vanillic acid, syringic acid, vanillin, syringaldehyde p-coumaric acid and ferulic acid, all of which could be used as 2-pyrone-4,6-dicarboxylic acid (PDC) precursors, were contained in all parts of oil palm, although their composition differed. The peak yield of p-hydroxybenzoic acid was obtained among the PDC precursors. With regard to extraction conditions, temperature: 200°C, time: 20-60 min, and liquor ratio: 50-125 were the most efficient. The kernel shell exhibited the highest yield of PDC precursors, followed by the trunk, empty fruit bunch fiber, and bark. The results of our study indicate the oil palm is a potentially valuable source of PDC precursors.

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Pressurized Hot Water Extraction of anthocyanins from red onion: A study on extraction and degradation rates

Cited by 76 publications

References 16 publications

Pressurized Hot Water Extraction of Alkaloids in Goldenseal

Pressurized Hot Water Extraction of Alkaloids in Goldenseal

Developing novel one-step processes for obtaining food-grade O/W emulsions from pressurized fluid extracts: processes description, state of the art and perspectives

Subcritical Water Extraction of Low-molecular-weight Phenolic Compounds from Oil Palm Biomass

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