Purification of galacto-oligosaccharides (GOS) by three-stage serial nanofiltration units under critical transmembrane pressure conditions

Córdova, Andrés; Astudillo, Carolina; Santibáñez, Luciana; Cassano, Alfredo; Ruby‒Figueroa, René; Illanes, Andrés

doi:10.1016/j.cherd.2016.11.006

Cited by 50 publications

(25 citation statements)

References 33 publications

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“…An empirical model showed that due to the increase in the solute concentration during batch NF, TMP must be decreased with time to prevent fouling effects. Using NF serial system, the maximum GOS concentration achieved for raw GOS was 241 g/l and 156.8 g/l for pre-hydrolyzed GOS [ 27 ].…”

Section: Resultsmentioning

confidence: 99%

Optimization of operating parameters for xylose reductase separation through ultrafiltration membrane using response surface methodology

Krishnan

Suzana

Wahid

et al. 2020

Biotechnology Reports

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Highlights Optimization of xylose reductase purification was established through ultrafiltration membrane. Effect of filtration time, transmembrane pressure, cross flow velocity was analysed towards high flux and fouling. Optimal filtration time, transmembrane pressure, cross flow velocity was determined as 30 min, 1.4 bars and 1.06cm/s. The error percentage between the actual and predicted value for membrane permeability was 2.21%.

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Section: Resultsmentioning

confidence: 99%

Optimization of operating parameters for xylose reductase separation through ultrafiltration membrane using response surface methodology

Krishnan

Suzana

Wahid

et al. 2020

Biotechnology Reports

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“…MARTINEZ-FEREZ and co-workers ( 2009) investigated the production of goat milk permeates with a reduced content of protein while recovering the whole oligosaccharide fraction, and showed that goat milk demonstrates interesting similarities compared to human milk with respect to the composition of oligosaccharides. GOS belong to so-called prebiotics, which are non-digestible and show benefi cial functions in the human body (CÓRDOVA et al, 2017). PRUKSASRI and SUPEE (2013) described the process of making goat milk containing GOS.…”

Section: Resultsmentioning

confidence: 99%

Effect of enzymatic conversion of lactose on the flavour profile of goat milk kefir and its permeate after microfiltration

Kaczyński

Cais‐Sokolińska

2018

Acta Alimentaria

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The aim of the study was to analyse the fl avour profi le and general lust of innovative dairy products -kefi r, which has increased health-oriented values resulting from an increase in the ratio of whey protein and an enzymatic bioconversion of lactose. Kefi r was prepared from a mixture of goat milk and its permeate concentrated with microfi ltration and ultrafi ltration processes, combined in a ratio of 6:4. The permeate addition increases sweetness and reduces overall fl avour of the dairy. The enzymatic conversion of lactose into galactooligosaccharides further increases the sweetness of the dairy mixture, while simultaneously weakening the odours both goatish and processed.

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“…The model predicts the J L and J C along with the ∆P T values at which they occur. It has been applied at different concentration factors and temperatures during the concentration of casein micelles by microfiltration [13] as well for the purification of prebiotic oligosaccharides by nanofiltration [14,15], providing an operational criterion that allows a stable flux. Regardless, it may be impractical to use this model at low ∆P T , as deviations between the experimental and predicted values have been observed.…”

Section: Introductionmentioning

confidence: 99%

Prediction of the Limiting Flux and Its Correlation with the Reynolds Number during the Microfiltration of Skim Milk Using an Improved Model

Astudillo‐Castro

Córdova

Oyanedel-Craver

et al. 2020

Foods

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Limiting flux (JL) determination is a critical issue for membrane processing. This work presents a modified exponential model for JL calculation, based on a previously published version. Our research focused on skim milk microfiltrations. The processing variables studied were the crossflow velocity (CFV), membrane hydraulic diameter (dh), temperature, and concentration factor, totaling 62 experimental runs. Results showed that, by adding a new parameter called minimum transmembrane pressure, the modified model not only improved the fit of the experimental data compared to the former version (R2 > 97.00%), but also revealed the existence of a minimum transmembrane pressure required to obtain flux (J). This result is observed as a small shift to the right on J versus transmembrane pressure curves, and this shift increases with the flow velocity. This fact was reported in other investigations, but so far has gone uninvestigated. The JL predicted values were correlated with the Reynolds number (Re) for each dh tested. Results showed that for a same Re; JL increased as dh decreased; in a wide range of Re within the turbulent regime. Finally, from dimensionless correlations; a unique expression JL = f (Re, dh) was obtained; predicting satisfactorily JL (R2 = 84.11%) for the whole set of experiments

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Purification of galacto-oligosaccharides (GOS) by three-stage serial nanofiltration units under critical transmembrane pressure conditions

Cited by 50 publications

References 33 publications

Optimization of operating parameters for xylose reductase separation through ultrafiltration membrane using response surface methodology

Optimization of operating parameters for xylose reductase separation through ultrafiltration membrane using response surface methodology

Effect of enzymatic conversion of lactose on the flavour profile of goat milk kefir and its permeate after microfiltration

Prediction of the Limiting Flux and Its Correlation with the Reynolds Number during the Microfiltration of Skim Milk Using an Improved Model

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