Beer Clarification Using Ceramic Tubular Membranes

Cimini, Alessio; Moresi, Mauro

doi:10.1007/s11947-014-1338-2

Cited by 25 publications

(21 citation statements)

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“…Among all the above quality attributes, the turbidity of filtered beer is that controlling the performance of the beer clarification process (Cimini and Moresi ). In fact, a certain reduction in aromatic, foaming, coloring, and extract‐forming compounds is generally observed, this being due to their adsorption onto the membrane or filter‐aids.…”

Section: Resultsmentioning

confidence: 99%

“…However, the average permeation flux was absolutely incomparable with that achievable with conventional powder filters. Such a membrane was previously regarded as optimal (Cimini and Moresi ), especially if the β‐glucan content of precentrifuged rough beer had been enzymatically minimized (Cimini and others ). Nevertheless, even if the average permeation flux (128 ± 33 L/m 2 /h) in the ceramic 0.8‐μm HF membrane module (Cimini and Moresi ) was greater than that (80 to 100 L/m 2 /h) claimed by Heineken/Norit Membrane Technology (Noordman and others ; Buttrick , ), it was from about one‐fifth to one‐half of the average filtration rate achieved in the classic technology using kieselguhr for the primary filtration of rough beer.…”

Section: Resultsmentioning

confidence: 99%

“…Further improvement is expected if the novel combined process consisting of sequential pre‐centrifugation, PVPP stabilization, cartridge filtration and CFMF of pale lager previously tested (Cimini and Moresi ) would be integrated with a preliminary enzymatic treatment (Cimini and others ), as shown in Figure .…”

Section: Resultsmentioning

confidence: 99%

“…The rough beer was clarified using a laboratory centrifuge (Beckman model J2‐21) at 6000 × g and less than 4 °C for 10 min to remove the suspended matter with size larger than 0.5 μm and thus limit cake layer formation during CFMF, as suggested by Buttrick () and tested previously (Cimini and Moresi ).…”

Section: Methodsmentioning

confidence: 99%

“…A series of previous trials using a ceramic 0.8‐μm single tube membrane module allowed a combined process consisting of sequential precentrifugation to reduce the RB haze level to 0.7 to 1.4 EBC unit, PVPP stabilization, trap filtration and CFMF to be developed (Cimini and Moresi , ; Cimini and others ). In this way, a bright, chill‐proof, and microbiologically stable beer was recovered at average permeation fluxes as high as 385 to 300 L/m 2 /h in the presence of periodic CO 2 back‐flushing.…”

Section: Introductionmentioning

confidence: 99%

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Beer Clarification by Novel Ceramic Hollow‐Fiber Membranes: Effect of Pore Size on Product Quality

Cimini

Moresi

2016

Journal of Food Science

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In this work, the crossflow microfiltration performance of rough beer samples was assessed using ceramic hollow-fiber (HF) membrane modules with a nominal pore size ranging from 0.2 to 1.4 μm. Under constant operating conditions (that is, transmembrane pressure difference, TMP = 2.35 bar; feed superficial velocity, v = 2.5 m/s; temperature, T = 10 °C), quite small steady-state permeation fluxes (J ) of 32 or 37 L/m /h were achieved using the 0.2- or 0.5-μm symmetric membrane modules. Both permeates exhibited turbidity <1 EBC unit, but a significant reduction in density, viscosity, color, extract, and foam half-life with respect to their corresponding retentates. The 0.8-μm asymmetric membrane module might be selected, its corresponding permeate having quite a good turbidity and medium reduction in the aforementioned beer quality parameters. Moreover, it exhibited J values of the same order of magnitude of those claimed for the polyethersulfone HF membrane modules currently commercialized. The 1.4-μm asymmetric membrane module yielded quite a high steady-state permeation flux (196 ± 38 L/m /h), and a minimum decline in permeate quality parameters, except for the high levels of turbidity at room temperature and chill haze. In the circumstances, such a membrane module might be regarded as a real valid alternative to conventional powder filters on condition that the resulting permeate were submitted to a final finishing step using 0.45- or 0.65-μm microbially rated membrane cartridges prior to aseptic bottling. A novel combined beer clarification process was thus outlined.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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