Separation of glucose/fructose mixtures. Analysis of elution of profiles

Matijašević, Lj.; Vasić-Rački, Đurđa; Pavlović, Nediljko

doi:10.1016/s1385-8947(97)00039-9

Cited by 4 publications

(4 citation statements)

References 5 publications

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“…() reported that monosaccharides can be recovered with water or with a low percentage of ethanol; disaccharides can be recovered with solutions composed of 5–10% ethanol and oligosaccharides with 15–50% ethanol. F and G due to their low molecular weight are weakly adsorbed and thus can be easily eluted (Matijašević et al ., ) while FOS are molecules of higher molecular weight and less polarity; thus, they are more adsorbed (Inglezakis & Poulopoulos, ; Nobre et al ., ) requiring less polar solvents to be eluted. Hydrophobic interaction is a crucial phenomenon in the interaction AC‐carbohydrate (Abe et al ., ; Nobre et al ., ).…”

Section: Resultsmentioning

confidence: 99%

Effect of Yacon (Smallanthus sonchifolius) fructooligosaccharide purification technique using activated charcoal or ion exchange fixed bed column on recovery, purity and sugar content

Campos

Mescua

Aguilar‐Galvez

et al. 2017

Int J of Food Sci Tech

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A rich in FOS and simple sugar yacon extract was clarified and decoloured and subsequently purified in an activated charcoal column at 25 and 40°C using two or three stepwise elution with yields of 72.0-86.7% and 90-92.4% purity. Best results were obtained at 25°C and two stepwise elution, with yield and purity of 81.5% and 92% but 9% sucrose and no glucose and fructose. Different cationic exchange resins on a clarified and demineralised extract at 25 and 60°C had yields and purity of 73.1-99.4% and 75.0-88.2%, respectively. Best results were obtained with Diaion UBK530Na at 60°C (99.4% yield and 88.2% purity) but 1.6, 2.7 and 7.5% of fructose, glucose and sucrose. The by-product was rich in sugars (59-60.1% fructose, 28.3-32.8% glucose, 7.2-8.4% sucrose) and could be used by the feed and food industry. Separation in a fixed-bed column packed with activated charcoalGranular activated charcoal (AC) was sieved to obtain a particle size within the <1-0.5 mm ≥ range. Then, it

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Section: Resultsmentioning

confidence: 99%

Effect of Yacon (Smallanthus sonchifolius) fructooligosaccharide purification technique using activated charcoal or ion exchange fixed bed column on recovery, purity and sugar content

Campos

Mescua

Aguilar‐Galvez

et al. 2017

Int J of Food Sci Tech

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“…The moment analysis method was employed to calculate the first moment (μ, mean residence time), and second moment (σ 2 , variance) of the response chromatographic peak as shown in Eqs. and , respectively .

μ = \frac{\int_{0}^{\infty} t C (t) d t}{\int_{0}^{\infty} C (t) d t} = t_{m} = \frac{ε_{b} V_{c}}{Q} = \frac{ε_{b} L_{c}}{u}

σ^{2} = \frac{\int_{0}^{\infty} t^{2} C (t) d t}{\int_{0}^{\infty} C (t) d t} - t_{m}^{2} = 2 (\frac{D_{a x}}{v L_{c}}) μ^{2}

where C(t) is the tracer concentration at the end of the column, Q is the flow rate of the mobile phase (L/min), and V c is the column volume (L).…”

Section: Modeling Of the Separation Process In A Chromatographic Columnmentioning

confidence: 99%

“…The moment analysis method was employed to calculate the first moment (, mean residence time), and second moment ( 2 , variance) of the response chromatographic peak as shown in Eqs. (9) and (10), respectively [23,27,28].…”

Section: Bed Porosity and Axial Dispersion Coefficientmentioning

confidence: 99%

Competitive effect of glucose–fructose adsorption in a fixed‐bed chromatographic column

Tangpromphan

Kaewchada

Jaree

2016

J of Separation Science

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A continuous separation system such as a simulated moving-bed process requires adsorption data with precise equilibrium and kinetic model parameters of a single chromatographic column. The adsorption of glucose and fructose in a fixed-bed chromatographic column was investigated to determine the competition effect of each component resulting from their initial molar ratios. The model parameters including bed porosity and axial dispersion coefficient were determined using the moment analysis method. The equilibrium isotherm parameters were estimated by conducting experiments at various molar ratios and initial sugar concentrations. The parameters obtained were then used for the simulation of dynamic breakthrough curves of glucose and fructose. The equilibrium isotherms revealed that the linear adsorption pattern provided good prediction for each molar ratio using the Henry equation. In addition, the modified Langmuir model was proposed to account for the competitive adsorption, due to the cooperative competition effect whereby glucose was promoted to the active sites by fructose to a greater degree than vice versa. A good agreement between the experimental and numerical data of the adsorption time profiles was also observed.

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“…Experimental data following this procedure for glucose-fructose mixtures on resins were published by a number of authors (Luz et al, 2008;Altenhöner et al, 1997;Matijasevic and Vasic-Racki, 1997;Viard and Lameloise, 1992), usually for monocomponent dilute solutions. Equilibrium isotherms for fructose and glucose onto ion-exchange resins are known to be linear over a relatively wide concentration range.…”

Section: Introductionmentioning

confidence: 99%

On the production of glucose and fructose syrups from cashew apple juice derivatives

Ramos

Duarte

Rodrigues

et al. 2011

Journal of Food Engineering

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a b s t r a c tThe cashew crop is an important agro-economic activity in many equatorial areas, although less than 10% of the cashew apple production is exploited industrially. This work focuses on two aspects: obtaining food-grade syrups from cashew apple juice and studying fixed bed adsorption dynamics to separate fructose from glucose. Syrups obtained by concentrating clarified cashew apple juice under vacuum showed similar characteristics to a reference food-grade syrup, with a higher content in fructose, which may contribute to a higher sweetening power with less caloric intake. Adsorption equilibrium studies were performed with synthetic solutions of fructose and glucose by frontal analysis under the concentration range found in the syrups (10-120 g/L) at 30, 40 and 60°C, using the cation exchange resin Dowex MTO 99Ca. Fructose was more strongly adsorbed than glucose, with measured selectivities ranging from 1.50 to 2.25. Resistance to mass transfer was significant and thought to be due to resin crosslinkage. Glucose and fructose breakthrough curves using cashew apple syrup as feed were practically identical to those measured with synthetic solutions, which leads us to believe that high-fructose syrups may be readily obtained by using current continuous chromatographic units, such as SMB.

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Separation of glucose/fructose mixtures. Analysis of elution of profiles

Cited by 4 publications

References 5 publications

Effect of Yacon (Smallanthus sonchifolius) fructooligosaccharide purification technique using activated charcoal or ion exchange fixed bed column on recovery, purity and sugar content

Effect of Yacon (Smallanthus sonchifolius) fructooligosaccharide purification technique using activated charcoal or ion exchange fixed bed column on recovery, purity and sugar content

Competitive effect of glucose–fructose adsorption in a fixed‐bed chromatographic column

On the production of glucose and fructose syrups from cashew apple juice derivatives

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