Optimization of periodic static-dynamic supercritical CO 2 extraction of taxifolin from pinus nigra bark with ethanol as entrainer

Ghoreishi, S.M.; Hedayati, Ali; Mohammadi, Sakineh

doi:10.1016/j.supflu.2016.03.015

Cited by 32 publications

(16 citation statements)

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“…It was found that the effect of pressure was more eminent on the extraction Process optimization for the supercritical carbon dioxide • 5 yield compared to other parameters. As expected, the oil yield increased with increasing pressure as increase in pressure leads to an increase in the density of SC-CO 2 thereby increasing the solubility of the oil in SC-CO 2 (Ghoreishi et al, 2016). As evident in Table 2, the high pressure of 50 M Pa yielded more oil compared to the low pressure of 30 MPa.…”

Section: Response Surface Analysissupporting

confidence: 67%

Process optimization for the supercritical carbon dioxide (SC-CO<sub>2</sub>) extraction of wheat germ oil with respect to yield, and phosphorous and tocol contents using a Box Behnken design

et al. 2018

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The supercritical carbon dioxide (SC-CO2) extraction technique has emerged as one of the best possible alternatives to organic solvent (hexane) extraction. However, very limited information is available on process optimization for this extraction technique and the lack of available engineering data is causing the slow growth of this technique. In the present investigation, SC-CO2 extraction was carried out to extract the oil from wheat germ under various operating conditions and the oil samples were characterized for properties such as phosphorous and tocol contents (vitamin E). A three-level Box Behnken design from response surface methodology was applied to optimize the SC-CO2 extraction parameters such as pressure, temperature and CO2 flow rate with an objective to obtain high oil yield, rich tocol contents and low phosphorous content. The process parameters were maintained between 30 to 50 MPa, 40 to 60 °C and a flow rate of 10 to 30 g·min-1 in a Box Behnken design matrix. Three different second order polynomial models were obtained for oil yield, phosphorous content and tocol contents with high R2 values. The optimum conditions were found to be 50 M Pa, 60 °C and 30 g·min-1 where the predicted oil yield, phosphorous content and tocol contents were found to be 8.87%, 31.86 mg·Kg-1 and 2059.92 mg·Kg-1 respectively. Under the optimum conditions, the experimental oil yield, phosphorous content and tocol contents obtained were found to be very close to the values predicted by the model.

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Section: Response Surface Analysissupporting

confidence: 67%

Process optimization for the supercritical carbon dioxide (SC-CO<sub>2</sub>) extraction of wheat germ oil with respect to yield, and phosphorous and tocol contents using a Box Behnken design

et al. 2018

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“…Since the addition of EtOH enhances the extraction of polyphenols, Seabra and co-workers [119] studied the influence of the CO 2 :EtOH ratio and concluded that a 30:70 ratio was the most appropriate mixture to obtain the highest extract from maritime pine bark in the shortest time. An optimization study of SFE carried out by Ghoreishi et al [120] achieved a 34% taxifolin recovery from Pinus nigra bark using ethanol as solvent at a flow rate of 1/20 of CO 2 . They also proposed a prediction model that can be used to scale up the SFE process for taxifolin extraction, thus reinforcing that SFE is a suitable process for polyphenols extraction.…”

Section: Supercritical Fluid Extractionmentioning

confidence: 99%

Green and Sustainable Valorization of Bioactive Phenolic Compounds from Pinus By-Products

et al. 2020

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In Europe, pine forests are one of the most extended forests formations, making pine residues and by-products an important source of compounds with high industrial interest as well as for bioenergy production. Moreover, the valorization of lumber industry residues is desirable from a circular economy perspective. Different extraction methods and solvents have been used, resulting in extracts with different constituents and consequently with different bioactivities. Recently, emerging and green technologies as ultrasounds, microwaves, supercritical fluids, pressurized liquids, and electric fields have appeared as promising tools for bioactive compounds extraction in alignment with the Green Chemistry principles. Pine extracts have attracted the researchers’ attention because of the positive bioproperties, such as anti-inflammatory, antimicrobial, anti-neurodegenerative, antitumoral, cardioprotective, etc., and potential industrial applications as functional foods, food additives as preservatives, nutraceuticals, pharmaceuticals, and cosmetics. Phenolic compounds are responsible for many of these bioactivities. However, there is not much information in the literature about the individual phenolic compounds of extracts from the pine species. The present review is about the reutilization of residues and by-products from the pine species, using ecofriendly technologies to obtain added-value bioactive compounds for industrial applications.

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“…Carbon dioxide is the most commonly used solvent for the extraction of metal ions due to low critical parameters (Tc=31.1 ºC, Pc=7.38 MPa), good solvation property, inert to the product, easy separation from the solute, being inexpensive, nontoxic (environmentally benign), nonflammable, availability in pure form and recycling capability [13,14]. However, carbon dioxide as a nonpolar compound is ineffective for the extraction of polar toxic heavy metal ions directly from matrixes and in some cases they may be extracted with very low efficiency.…”

Section: Introductionmentioning

confidence: 99%

Experimental investigation and optimization of supercritical carbon dioxide extraction of toxic heavy metals from solid waste using different modifiers and chelating agents

Ghoreishi

Hedayati

Ansari

2016

The Journal of Supercritical Fluids

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Optimization of periodic static-dynamic supercritical CO 2 extraction of taxifolin from pinus nigra bark with ethanol as entrainer

Cited by 32 publications

References 50 publications

Process optimization for the supercritical carbon dioxide (SC-CO<sub>2</sub>) extraction of wheat germ oil with respect to yield, and phosphorous and tocol contents using a Box Behnken design

Process optimization for the supercritical carbon dioxide (SC-CO<sub>2</sub>) extraction of wheat germ oil with respect to yield, and phosphorous and tocol contents using a Box Behnken design

Green and Sustainable Valorization of Bioactive Phenolic Compounds from Pinus By-Products

Experimental investigation and optimization of supercritical carbon dioxide extraction of toxic heavy metals from solid waste using different modifiers and chelating agents

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