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Abstract
SummaryDefatted whey was obtained by aggregating residual fat to calcium phosphate precipitates and separating the precipitate by membrane microfiltration (pore diameter 0·2 μm). When ultrafiltering this defatted whey the performance of an inorganic membrane (molecular mass cut-off, 10 kDa) was limited by the large concentration of Ca and phosphates. Consequently, the influence of the aggregation pH (either decreasing or constant) on membrane fouling has been studied for ultrafiltration (UF) of defatted sweet whey and defatted whey UF retentates (protein content up to 30g l–1). In all experiments protein rejection was 100%. When pH was kept constant during the pretreatment, membrane fouling was significantly lowered. Hydraulic resistances ascribed to irreversible fouling were in good agreement with fouled membrane analyses performed by i.r. and X-ray photoelectron spectroscopies. They showed that provided a low Ca and phosphate content was maintained in the microfiltrate, which was achieved at constant pH, no apatite was detected within the membrane, and proteins were less fouling. On the other hand, the amount of fouling material depended on the transmembrane pressure gradient along the hydraulic path. On the membrane surface, the higher the pressure, the higher the fouling. In the membrane bulk, the fouling heterogeneity depended on the ability of the defatted whey to precipitate apatite. If it did, the higher the pressure, the higher the calcium phosphate and the protein fouling. With other phosphate structures, the bulk fouling depended on the barrier formed by surface fouling layers and the protein concentration polarization layer, which were more resistant to solute and solvent transfer under higher pressure, where they were thicker.
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Yee KW, Wiley DE, Bao J. A unified model of the time dependence of flux decline for the long-term ultrafiltration of whey. J Memb Sci 2009. [DOI: 10.1016/j.memsci.2009.01.041] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Barba D, Beolchini F, Cifoni D, Veglió F. WHEY PROTEIN CONCENTRATE PRODUCTION IN A PILOT SCALE TWO-STAGE DIAFILTRATION PROCESS. SEP SCI TECHNOL 2007. [DOI: 10.1081/ss-100102948] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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D'ALVISE N, LESUEUR-LAMBERT C, FERTIN B, DHULSTER P, GUILLOCHON D. Removal of Polyphenols and Recovery of Proteins from Alfalfa White Protein Concentrate by Ultrafiltration and Adsorbent Resin Separations. SEP SCI TECHNOL 2007. [DOI: 10.1081/ss-100102349] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
- N. D'ALVISE
- a LABORATOIRE DE TECHNOLOGIE DES SUBSTANCES NATURELLES , IUT ‘A’ LILLE I, BP 179, VILLENEUVE D' ASCQ CEDEX , 59653 , FRANCE
| | - C. LESUEUR-LAMBERT
- a LABORATOIRE DE TECHNOLOGIE DES SUBSTANCES NATURELLES , IUT ‘A’ LILLE I, BP 179, VILLENEUVE D' ASCQ CEDEX , 59653 , FRANCE
| | - B. FERTIN
- a LABORATOIRE DE TECHNOLOGIE DES SUBSTANCES NATURELLES , IUT ‘A’ LILLE I, BP 179, VILLENEUVE D' ASCQ CEDEX , 59653 , FRANCE
| | - P. DHULSTER
- a LABORATOIRE DE TECHNOLOGIE DES SUBSTANCES NATURELLES , IUT ‘A’ LILLE I, BP 179, VILLENEUVE D' ASCQ CEDEX , 59653 , FRANCE
| | - D. GUILLOCHON
- a LABORATOIRE DE TECHNOLOGIE DES SUBSTANCES NATURELLES , IUT ‘A’ LILLE I, BP 179, VILLENEUVE D' ASCQ CEDEX , 59653 , FRANCE
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Nau F, Kerhervé FL, Leonil J, Daufin G. Selective separation of tryptic β-casein peptides through ultrafiltration membranes: Influence of ionic interactions. Biotechnol Bioeng 2004; 46:246-53. [DOI: 10.1002/bit.260460307] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Barba D, Beolchini F, Cifoni D, Veglio' F. Whey ultrafiltration in a tubular membrane: effect of selected operating parameters. SEP SCI TECHNOL 2002. [DOI: 10.1081/ss-120003043] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Hydrolysis and large scale ultrafiltration study of alfalfa protein concentrate enzymatic hydrolysate. Enzyme Microb Technol 2000; 27:286-294. [PMID: 10899555 DOI: 10.1016/s0141-0229(00)00212-x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Batch enzymatic hydrolysis of insoluble Alfalfa Protein Concentrate by Delvolase was carried out at laboratory and at pilot-plant scale coupled to an ultrafiltration reactor with a mineral tubular membrane. Parametric studies were carried out on the batch system to determine the biochemical and hydrodynamical optimum conditions. The hydrolysis conditions selected were 40 degrees C, pH 9.5, initial substrate level 3 g protein/100 g and the enzyme substrate ratio 152 U/g protein. After 5 h of hydrolysis, 96% of the total amount of initial nitrogen was solubilized. The ultrafiltration conditions selected were a 10 000 Nominal Molecular Weight Cut-Off, a transmembrane pressure of 1.5 bar, a flux velocity of 0.8 m/s. Fifty percent of the initial nitrogen appeared in the permeate.
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Boyaval P, Lavenant C, Gésan G, Daufin G. Transient and stationary operating conditions on performance of lactic acid bacteria crossflow microfiltration. Biotechnol Bioeng 2000; 49:78-86. [DOI: 10.1002/(sici)1097-0290(19960105)49:1<78::aid-bit10>3.0.co;2-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Merin U, Shomer I. Ultrafiltration performance of heat-treated shamouti orange [Citrus sinensis (L.) Osbeck] juice. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 1999; 47:2617-2622. [PMID: 10552535 DOI: 10.1021/jf980774n] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
During ultrafiltration of orange juice with inorganic membranes, heating of the juice prior to the filtration experiment resulted in a significant increase of the fouling indices. The effect of the irreversible fouling (Rif) was always high, whereas the reversible fouling (Rrf) depended on the treatment. It was clearly seen that fouling was reduced after pectin degradation, but the heat treatment applied to the juice before filtration still resulted in reduced fluxes. It is suggested that pectins and proteins that undergo flocculation/coagulation during the heat treatment tend to interact with the membrane-filtering layer and to cause reduction of permeation flux. To clean the membrane to restore its pure water flux, close to the initial one, a proteolitic enzyme detergent wash was needed.
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Affiliation(s)
- U Merin
- Department of Food Science, Agricultural Research Organization, The Volcani Center, P.O. Box 6, Bet Dagan 50-250, Israel
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Critical stability conditions in crossflow microfiltration of skimmed milk: transition to irreversible deposition. J Memb Sci 1999. [DOI: 10.1016/s0376-7388(99)00017-4] [Citation(s) in RCA: 98] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Cabero M, Riera F, Álvarez R. Rinsing of ultrafiltration ceramic membranes fouled with whey proteins: effects on cleaning procedures. J Memb Sci 1999. [DOI: 10.1016/s0376-7388(98)00294-4] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Le Berre O, Daufin G. Skimmilk crossflow microfiltration performance versus permeation flux to wall shear stress ratio. J Memb Sci 1996. [DOI: 10.1016/0376-7388(96)00076-2] [Citation(s) in RCA: 70] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Gésan G, Daufin G, Merin U. Performance of whey crossflow microfiltration during transient and stationary operating conditions. J Memb Sci 1995. [DOI: 10.1016/0376-7388(95)00037-d] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Daufin G, Radenac JF, Gésan G, Kerhervé FL, Berre OL, Michel F, Merin U. A Novel Rig Design for Ultra- and Microfiltration Experiments. SEP SCI TECHNOL 1993. [DOI: 10.1080/01496399308017501] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Gésan G, Daufin G, Merin U, Labbé JP, Quémerais A. Fouling during constant flux crossflow microfiltration of pretreated whey. Influence of transmembrane pressure gradient. J Memb Sci 1993. [DOI: 10.1016/0376-7388(93)85138-m] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Koutake M, Matsuno I, Nabetani H, Nakajima M, Watanabe A. Osmotic pressure model of membrane fouling applied to the ultrafiltration of whey. J FOOD ENG 1993. [DOI: 10.1016/0260-8774(93)90050-t] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Utilizing the tubular bioreactor for continuous recovery of secreted fusion protein from recombinant Escherichia coli. ACTA ACUST UNITED AC 1991. [DOI: 10.1007/bf00387409] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Nyström M, Järvinen P. Modification of polysulfone ultrafiltration membranes with UV irradiation and hydrophilicity increasing agents. J Memb Sci 1991. [DOI: 10.1016/s0376-7388(00)81540-9] [Citation(s) in RCA: 104] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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