Concentration of Skim Milk by a Cascade Comprised of Ultrafiltration and Nanofiltration: Investigation of the Nanofiltration of Skim Milk Ultrafiltration Permeate

Meyer, Patricia; Petermeier, Hannes; Hartinger, Martin; Kulozik, Ulrich

doi:10.1007/s11947-016-1836-5

Cited by 7 publications

(7 citation statements)

References 30 publications

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“…In the present investigation, a cross-flow membrane module was adopted and batch-mode filtration was performed with volume reduction factor 2. To prepare milk protein concentrate, polymeric spiral wound [19,127,128], single flat sheet [13,129,130], and tubular [131] membranes were used. Furthermore, ceramic tubular membrane was used to prepare milk protein concentrate by several investigators [132][133][134][135][136].…”

Section: Superiority Of the Processmentioning

confidence: 99%

“…Furthermore, ceramic tubular membrane was used to prepare milk protein concentrate by several investigators [132][133][134][135][136]. Single stage membrane filtration [19,127,129,131,136] and ultrafiltration with diafiltration were used by several investigators to prepare milk protein concentrate [137,138]. Both continuous and discontinuous diafiltration were adopted to reduce major whey proteins, such as α-lactalbumin and β-lactoglobulin from casein fraction by ultrafiltration or nanofiltration membrane.…”

Section: Superiority Of the Processmentioning

confidence: 99%

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Production of Liquid Milk Protein Concentrate with Antioxidant Capacity, Angiotensin Converting Enzyme Inhibitory Activity, Antibacterial Activity, and Hypoallergenic Property by Membrane Filtration and Enzymatic Modification of Proteins

et al. 2020

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Liquid milk protein concentrate with different beneficial values was prepared by membrane filtration and enzymatic modification of proteins in a sequential way. In the first step, milk protein concentrate was produced from ultra-heat-treated skimmed milk by removing milk serum as permeate. A tubular ceramic-made membrane with filtration area 5 × 10−3 m2 and pore size 5 nm, placed in a cross-flow membrane house, was adopted. Superior operational strategy in filtration process was herein: trans-membrane pressure 3 bar, retention flow rate 100 L·h−1, and implementation of a static turbulence promoter within the tubular membrane. Milk with concentrated proteins from retentate side was treated with the different concentrations of trypsin, ranging from 0.008–0.064 g·L−1 in individual batch-mode operations at temperature 40 °C for 10 min. Subsequently, inactivation of trypsin in reaction was done at a temperature of 70 °C for 30 min of incubation. Antioxidant capacity in enzyme-treated liquid milk protein concentrate was measured with the Ferric reducing ability of plasma assay. The reduction of angiotensin converting enzyme activity by enzyme-treated liquid milk protein concentrate was measured with substrate (Abz-FRK(Dnp)-P) and recombinant angiotensin converting enzyme. The antibacterial activity of enzyme-treated liquid milk protein concentrate towards Bacillus cereus and Staphylococcus aureus was tested. Antioxidant capacity, anti-angiotensin converting enzyme activity, and antibacterial activity were increased with the increase of trypsin concentration in proteolytic reaction. Immune-reactive proteins in enzyme-treated liquid milk protein concentrate were identified with clinically proved milk positive pooled human serum and peroxidase-labelled anti-human Immunoglobulin E. The reduction of allergenicity in milk protein concentrate was enzyme dose-dependent.

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Section: Superiority Of the Processmentioning

confidence: 99%

Section: Superiority Of the Processmentioning

confidence: 99%

Production of Liquid Milk Protein Concentrate with Antioxidant Capacity, Angiotensin Converting Enzyme Inhibitory Activity, Antibacterial Activity, and Hypoallergenic Property by Membrane Filtration and Enzymatic Modification of Proteins

et al. 2020

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“…2009; Meyer et al . 2017). In a multistage membrane filtration process, the retentate or the permeate of one step totally or partially feeds the next one in series or in parallel, thereby taking advantage of complementary membrane characteristics (cut‐off, material, module configuration, etc .)…”

Section: Introduction: Improved Processing Efficiency At Industrial S...mentioning

confidence: 99%

“…While for practical reasons the literature mostly addresses the application of single-stage filtration processes to dairy streams, milk processors employ nearly exclusively multistage sequential filtration processes to improve flux performance, reduce fouling and enhance membrane selectivity, when dealing with a stream as complex as bovine milk (Saxena et al 2009;Meyer et al 2017). In a multistage membrane filtration process, the retentate or the permeate of one step totally or partially feeds the next one in series or in parallel, thereby taking advantage of complementary membrane characteristics (cutoff, material, module configuration, etc.)…”

Section: Introduction: Improved Processing Efficiency At Industrial S...mentioning

confidence: 99%

A review of multistage membrane filtration approaches for enhanced efficiency during concentration and fractionation of milk and whey

Blais

Schroën

Tobin

2022

Int J of Dairy Tech

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This review considers the impact of combining discrete membrane filtration configurations in a multistage or sequential configuration to improve processing performance, energy efficiency and component selectivity in dairy processes. The review focuses on the impact of multistage membrane filtration on (i) concentration processes, through the examination of fouling accumulation and its impact on flux and energy efficiency, and (ii) fractionation processes, whereby the yield/purity of dairy components is assessed. Observations from single-stage and batch microfiltration, ultrafiltration, nanofiltration and reverse osmosis processes reported in the literature are compared to the continuous multistage filtration processes common in commercial dairy installations.

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“…The potential removal of salts is also important for preventing scaling and build-up on evaporators, thus facilitating the production of high-quality lactose and whey products (Zhang et al 2020). The specific features of NF membranes are mainly the combination of very high rejection factors for multivalent ions (99%) with low to moderate rejection factors for monovalent ions (0-70%), and high rejection factors (90%) for organic compounds with molecular weights above that of the membrane MWCO (Meyer et al 2017). Although there are several reported studies of milk concentration with the use of reverse osmosis and by coupling ultrafiltration, electrodialysis, and nanofiltration technologies, there are few works in the literature focused on the NF as a single process for milk concentration (Zacharof and Lovitt 2012a).…”

Section: Introductionmentioning

confidence: 99%

Nanofiltration process monitoring and antioxidant activity analysis of skimmed milk samples

Trayanov

2022

FSAB

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Dead-end stirred cell experiments were performed with reconstituted skimmed milk and model solutions of single components (lactic acid). When a low solids concentration is presented with the feed, dead-end filtration with a selected polymeric membrane with cut-off of 300 Da is a viable option to assure a high rejection of the dissolved organic compounds (> 90%), combined with a good transport at moderate pressures (20 bar) with an average flux increasing from 48 Lh−1m−2 at room temperature and over 67 L h−1m−2 at 50°C until reaching a volume reduction of about 5. The DPPH antioxidant activity was effectively improved (~3 fold) with some loss due to fouling, temperature and transmission of low-molecular weight components in the permeates in spite of high rejection in the process, whilst the latter have astoundingly an antioxidant capacity, so each permeate can be divided into time intervals of permeation per sample into aliquotes with different DPPH antioxidant activity. That is further confirmed with statistical analysis where р > 0.05. As conclusion, because the temperature of up to 50°C significantly increases the flux without much effect on the antioxidant activity, such temperatures, dilution and conditions are viable option for large-scale production uses.

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Concentration of Skim Milk by a Cascade Comprised of Ultrafiltration and Nanofiltration: Investigation of the Nanofiltration of Skim Milk Ultrafiltration Permeate

Cited by 7 publications

References 30 publications

Production of Liquid Milk Protein Concentrate with Antioxidant Capacity, Angiotensin Converting Enzyme Inhibitory Activity, Antibacterial Activity, and Hypoallergenic Property by Membrane Filtration and Enzymatic Modification of Proteins

Production of Liquid Milk Protein Concentrate with Antioxidant Capacity, Angiotensin Converting Enzyme Inhibitory Activity, Antibacterial Activity, and Hypoallergenic Property by Membrane Filtration and Enzymatic Modification of Proteins

A review of multistage membrane filtration approaches for enhanced efficiency during concentration and fractionation of milk and whey

Nanofiltration process monitoring and antioxidant activity analysis of skimmed milk samples

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