Supercritical carbon dioxide extraction of brewer's spent grain

Spinelli, Sara; Conte, Amalia; Lecce, Lucia; Padalino, Lucia; Nobile, Matteo Alessandro Del

doi:10.1016/j.supflu.2015.08.017

Cited by 56 publications

(60 citation statements)

References 28 publications

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“…As can be observed for both of them the yield was directly influenced by the ethanol percentage used in the SFE technique. As confirmed by Spinelli et al [20] the increase of the polarity of the supercritical fluid by adding a polar modifier such as ethanol is the variable that significantly interfered on the extraction. Ethanol addition promotes the rupture in solute-matrix interactions and substitutes with co-solvent molecules in solid active sites [20,44].…”

Section: Chemical Characterization Of Extracts By Sfementioning

confidence: 80%

“…In particular, the yield of Crithmum maritimum and Salicornia europaea extracts were quantified in grams at 10-minute intervals until reaching a balance and thus allowing for the optimum bioactive compound extraction. Furthermore, to improve SFE effectiveness, increased concentrations of ethanol (10,20 or 40% v/v) were pumped. The obtained extracts were placed overnight in vacuum oven at 30°C.…”

Section: Supercritical Fluid Extraction (Sfe)mentioning

confidence: 99%

“…For each sample, total phenols were estimated according to the colorimetric method explained by Spinelli et al [20]. These authors also described the aluminium trichloride method for determining the total flavonoid content (TFC) expressed as milligrams of quercetin equivalents (QE) per gram of sample, calculated by standard curve of quercetin concentrations (400-5 ppm; R 2 =0.999).…”

Section: Chemical Characterization Of the Extractsmentioning

confidence: 99%

“…The SFE working conditions for both Crithmum maritimum and Salicornia europaea were characterized by constant extraction temperature (50 °C) and pressure (300 bar) and different ethanol concentrations (10,20 or 40% v/v, respectively). Ethanol concentrations over 40% were not tested.…”

Section: Chemical Characterization Of Extracts By Sfementioning

confidence: 99%

“…Due to the low polarity of supercritical CO 2 against more polar compounds from natural matrices, a co-solvent is also commonly used [16,18]. Various studies on the extraction of essential oils, tocotrienols, alkaloids, phenolic compounds, carotenoids and tocopherols from different food matrices were reported [16,19,20].…”

Section: Introductionmentioning

confidence: 99%

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Study of the Efficacy of Two Extraction Techniques from Crithmum maritimum and Salicornia europaea

Costa¹,

Padalino²,

Spinelli³

et al. 2018

JFNR

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The aim of this work was to study the characteristics of the extracts from two halophytes, sea fennel (Crithmum maritimum L.) and marsh samphire (Salicornia europaea L.) that naturally grow on the Mediterranean coast, by using ultrasound-assisted extraction (UAE) and supercritical fluid extraction (SFE). Best conditions for UAE were found at temperature 50°C, 20 min extraction time, 1:30 ratio solid:solvent and 40% (v/v) ethanol concentration. For SFE best conditions were at 50°C and 300 bar pressures with 40% (v/v) ethanol concentration. Total extract yield, total phenolic content, total flavonoid content and antioxidant capacity of the extracts were measured. For both species the best results were obtained with UAE technique. Between the two halophytes, the C. maritimum extract was the richest one in antioxidant compounds (total phenol = 23.44 mg GAE s g dw -1); under the best conditions the S. europea extract allowed recording only 9.31 mg GAE s g dw -1 of total phenol.

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Section: Chemical Characterization Of Extracts By Sfementioning

confidence: 80%

Section: Supercritical Fluid Extraction (Sfe)mentioning

confidence: 99%

Section: Chemical Characterization Of the Extractsmentioning

confidence: 99%

Section: Chemical Characterization Of Extracts By Sfementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Study of the Efficacy of Two Extraction Techniques from Crithmum maritimum and Salicornia europaea

Costa¹,

Padalino²,

Spinelli³

et al. 2018

JFNR

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A bibliometric analysis on potential uses of brewer's spent grains in a biorefinery for the circular economy transition of the beer industry

Ampese

Mussatto²,

Forster‐Carneiro

2021

Biofuels Bioprod Bioref

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This comprehensive review aims to elucidate the state of the art related to research trends regarding the use of brewer's spent grains (BSG), the main solid by-product generated in breweries. Its status, future opportunities, and emerging trends were evaluated by bibliometric analysis, which contributed to clarifying the knowledge and perspectives in the field. In total, 510 documents were obtained from the Web of Science© database in a timespan from 1900 to 2020. VosViewer software and R-bibliometrix package were used to investigate and map the most frequently cited papers, international collaborative networks, keywords, and the main countries and journals associated with this research. The results showed that, globally, 65 countries have been engaged in research related to BSG, and Brazil has been the most productive country, with up to 70 publications. Keyword analysis revealed that the studies on BSG are divided into four main knowledge areas: (i) pretreatment; (ii) nutritional quality; (iii) bioactive compounds, and (iv) pyrolysis. It was also found that a biorefinery can be designed for the complete utilization of BSG to obtain several valuable compounds. In this sense, different technological routes can be applied to produce arabinoxylans, proteins, ferulic acid, xylitol, xylose, lactic acid, butanol, biogas, fertilizer, and ethanol. In conclusion, BSG is a cost-effective and feasible raw material for the sustainable production of bio-based products and bioenergy and its valorization in a biorefinery is a powerful strategy to promote the circular economy transition of the beer industry.

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Fed-batch l -(+)-lactic acid fermentation of brewer's spent grain hydrolysate

et al. 2017

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Brewer's spent grain (BSG) hydrolysates were used for l‐(+)‐lactic acid (LA) fermentation by Lactobacillus rhamnosus ATCC 7469. The aim of this study was to evaluate fed‐batch LA fermentation of BSG hydrolysate with the addition of glucose, glucose and yeast extract, and wort during LA fermentation and its effect on fermentation parameters such as LA concentration, its volumetric productivity and yield, and L. rhamnosus cell viability. The highest LA yield, volumetric productivity and concentration of 93.3%, 2.0 g/L/h, and 116.1 g/L, respectively, were achieved with glucose and yeast extract addition during fermentation. In fed‐batch fermentation with glucose and yeast extract addition significantly higher LA concentration, yield and volumetric productivity (by 194.8; 2.2, and 20.7%, respectively) were achieved compared with batch fermentation. The results indicated that fed‐batch fermentation could be used to increase LA fermentation efficiency. Copyright © 2017 The Institute of Brewing & Distilling

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Supercritical carbon dioxide extraction of brewer's spent grain

Cited by 56 publications

References 28 publications

Study of the Efficacy of Two Extraction Techniques from <i>Crithmum maritimum</i> and<i> Salicornia europaea</i>

Study of the Efficacy of Two Extraction Techniques from <i>Crithmum maritimum</i> and<i> Salicornia europaea</i>

A bibliometric analysis on potential uses of brewer's spent grains in a biorefinery for the circular economy transition of the beer industry

Fed-batch l -(+)-lactic acid fermentation of brewer's spent grain hydrolysate

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