Analysing extraction uniformity from porous coffee beds using mathematical modelling and computational fluid dynamics approaches
Achieving a uniform extraction of soluble material from a porous matrix is a generic problem in various separation and filtration operations, with applications in the food processing, chemical and pharmaceutical industries. This paper describes models of fluid flow and transport of soluble material...
Gespeichert in:
| Veröffentlicht in: | PloS one 2019-07, Vol.14 (7), p.e0219906-e0219906 |
|---|---|
| Hauptverfasser: | , , , , , |
| Format: | Artikel |
| Sprache: | eng |
| Schlagworte: | |
| Online-Zugang: | Volltext |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| container_end_page | e0219906 |
|---|---|
| container_issue | 7 |
| container_start_page | e0219906 |
| container_title | PloS one |
| container_volume | 14 |
| creator | Moroney, Kevin M O'Connell, Ken Meikle-Janney, Paul O'Brien, Stephen B G Walker, Gavin M Lee, William T |
| description | Achieving a uniform extraction of soluble material from a porous matrix is a generic problem in various separation and filtration operations, with applications in the food processing, chemical and pharmaceutical industries. This paper describes models of fluid flow and transport of soluble material within a packed granular bed in the context of coffee extraction. Coffee extraction is described by diffusion of soluble material from particles of one or more representative sizes into fluid flowing through the packed bed. One-dimensional flow models are compared to computational fluid dynamics (CFD) models. A fine and a coarse coffee grind are considered. Model results are compared to experimental data for a packed cylindrical coffee bed and the influence of a change in geometry to a truncated cone is considered. Non-uniform flow in the truncated cone causes significant variation in the local extraction level. Coffee extraction levels during brewing are analysed using extraction maps and the degree of variation is represented on the industry standard coffee brewing control chart. A high variation in extraction yield can be expected to impart bitter flavours into the brew and thus is an important variable to quantify. |
| doi_str_mv | 10.1371/journal.pone.0219906 |
| format | Article |
| fullrecord | <record><control><sourceid>gale_plos_</sourceid><recordid>TN_cdi_plos_journals_2267556896</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><galeid>A595104890</galeid><doaj_id>oai_doaj_org_article_aa5fd50106be44f9865fef48d344f45b</doaj_id><sourcerecordid>A595104890</sourcerecordid><originalsourceid>FETCH-LOGICAL-c692t-7bdc4bf42ac52b31d433f116725813797f13320c1f8e4635494636e448845bbf3</originalsourceid><addsrcrecordid>eNqNk0uL2zAQx01p6T7ab1BaQ6G0h6SSZcn2pRCWPgILC31dhaxHoiBbrmSX5rYfvePEu8RlD8UgS6Pf_KWZ0STJC4yWmBT4_c4PoRVu2flWL1GGqwqxR8k5rki2YBkij0_mZ8lFjDuEKCkZe5qcEUwYhcV5crsCjX207SbVf_ogZG99mw6tNT40tt-nJvgm7XzwQ0ylN0brtNYqpsPBpxH9VsNgpXBp45V2bjSLVgHcdEMvRj3YM26wKlX7VjRWxlR0XfBCbnV8ljwxwkX9fPpfJj8-ffx-9WVxffN5fbW6XkhWZf2iqJXMa5NnQtKsJljlhBiMWZHREtJRFQYTkiGJTalzRmhewch0npdlTuvakMvk1VG3cz7yKXmRZxkrKGVlxYBYHwnlxY53wTYi7LkXlh8MPmy4CBCp01wIahRFGLEajjBVyajRJi8VgRWcB1ofptOGutFK6hZy62ai853WbvnG_-aMsbJEFQi8nQSC_zXo2PPGRgnpFa2GUhzuXcClKQL09T_ow9FN1EZAALY1fqz2KMpXtKIY5WU1ai0foOBTGuoGL81YsM8c3s0cgOnhIW3EECNff_v6_-zNzzn75oTdauH6bfRuGJ9TnIP5EZTBxxi0uU8yRnxslLts8LFR-NQo4PbytED3TnedQf4CfHYP9g</addsrcrecordid><sourcetype>Open Website</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>2267556896</pqid></control><display><type>article</type><title>Analysing extraction uniformity from porous coffee beds using mathematical modelling and computational fluid dynamics approaches</title><source>Public Library of Science (PLoS) Journals Open Access</source><source>MEDLINE</source><source>DOAJ Directory of Open Access Journals</source><source>EZB-FREE-00999 freely available EZB journals</source><source>PubMed Central</source><source>Free Full-Text Journals in Chemistry</source><creator>Moroney, Kevin M ; O'Connell, Ken ; Meikle-Janney, Paul ; O'Brien, Stephen B G ; Walker, Gavin M ; Lee, William T</creator><contributor>Tian, Fang-Bao</contributor><creatorcontrib>Moroney, Kevin M ; O'Connell, Ken ; Meikle-Janney, Paul ; O'Brien, Stephen B G ; Walker, Gavin M ; Lee, William T ; Tian, Fang-Bao</creatorcontrib><description>Achieving a uniform extraction of soluble material from a porous matrix is a generic problem in various separation and filtration operations, with applications in the food processing, chemical and pharmaceutical industries. This paper describes models of fluid flow and transport of soluble material within a packed granular bed in the context of coffee extraction. Coffee extraction is described by diffusion of soluble material from particles of one or more representative sizes into fluid flowing through the packed bed. One-dimensional flow models are compared to computational fluid dynamics (CFD) models. A fine and a coarse coffee grind are considered. Model results are compared to experimental data for a packed cylindrical coffee bed and the influence of a change in geometry to a truncated cone is considered. Non-uniform flow in the truncated cone causes significant variation in the local extraction level. Coffee extraction levels during brewing are analysed using extraction maps and the degree of variation is represented on the industry standard coffee brewing control chart. A high variation in extraction yield can be expected to impart bitter flavours into the brew and thus is an important variable to quantify.</description><identifier>ISSN: 1932-6203</identifier><identifier>EISSN: 1932-6203</identifier><identifier>DOI: 10.1371/journal.pone.0219906</identifier><identifier>PMID: 31365538</identifier><language>eng</language><publisher>United States: Public Library of Science</publisher><subject>Applied mathematics ; Biology and Life Sciences ; Bitter taste ; Breweries ; Brewing ; Coffee ; Coffee (Beverage) ; Coffee - chemistry ; Coffee industry ; Computational fluid dynamics ; Computer and Information Sciences ; Computer applications ; Control charts ; Engineering ; Flavors ; Fluid dynamics ; Fluid flow ; Food ; Food Handling - methods ; Food processing ; Food processing industry ; Food processing machinery ; Forecasts and trends ; Generic drugs ; Genetic aspects ; Hot Temperature ; Hydrodynamics ; Industry standards ; Mathematical analysis ; Mathematical models ; Mathematics ; Matrix methods ; Medicine and Health Sciences ; Models, Theoretical ; Nonuniform flow ; Organic chemistry ; Packed beds ; Pharmaceutical industry ; Physical Sciences ; Plant extracts ; Plant Extracts - chemistry ; Porosity ; Porous materials ; Porous media ; Quality ; Research and Analysis Methods ; Uniform flow ; Variation ; VOCs ; Volatile organic compounds</subject><ispartof>PloS one, 2019-07, Vol.14 (7), p.e0219906-e0219906</ispartof><rights>COPYRIGHT 2019 Public Library of Science</rights><rights>2019 Moroney et al. This is an open access article distributed under the terms of the Creative Commons Attribution License: http://creativecommons.org/licenses/by/4.0/ (the “License”), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.</rights><rights>2019 Moroney et al 2019 Moroney et al</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c692t-7bdc4bf42ac52b31d433f116725813797f13320c1f8e4635494636e448845bbf3</citedby><cites>FETCH-LOGICAL-c692t-7bdc4bf42ac52b31d433f116725813797f13320c1f8e4635494636e448845bbf3</cites><orcidid>0000-0002-4573-5137</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://www.ncbi.nlm.nih.gov/pmc/articles/PMC6668809/pdf/$$EPDF$$P50$$Gpubmedcentral$$Hfree_for_read</linktopdf><linktohtml>$$Uhttps://www.ncbi.nlm.nih.gov/pmc/articles/PMC6668809/$$EHTML$$P50$$Gpubmedcentral$$Hfree_for_read</linktohtml><link.rule.ids>230,315,729,782,786,866,887,2106,2932,23875,27933,27934,53800,53802</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/31365538$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><contributor>Tian, Fang-Bao</contributor><creatorcontrib>Moroney, Kevin M</creatorcontrib><creatorcontrib>O'Connell, Ken</creatorcontrib><creatorcontrib>Meikle-Janney, Paul</creatorcontrib><creatorcontrib>O'Brien, Stephen B G</creatorcontrib><creatorcontrib>Walker, Gavin M</creatorcontrib><creatorcontrib>Lee, William T</creatorcontrib><title>Analysing extraction uniformity from porous coffee beds using mathematical modelling and computational fluid dynamics approaches</title><title>PloS one</title><addtitle>PLoS One</addtitle><description>Achieving a uniform extraction of soluble material from a porous matrix is a generic problem in various separation and filtration operations, with applications in the food processing, chemical and pharmaceutical industries. This paper describes models of fluid flow and transport of soluble material within a packed granular bed in the context of coffee extraction. Coffee extraction is described by diffusion of soluble material from particles of one or more representative sizes into fluid flowing through the packed bed. One-dimensional flow models are compared to computational fluid dynamics (CFD) models. A fine and a coarse coffee grind are considered. Model results are compared to experimental data for a packed cylindrical coffee bed and the influence of a change in geometry to a truncated cone is considered. Non-uniform flow in the truncated cone causes significant variation in the local extraction level. Coffee extraction levels during brewing are analysed using extraction maps and the degree of variation is represented on the industry standard coffee brewing control chart. A high variation in extraction yield can be expected to impart bitter flavours into the brew and thus is an important variable to quantify.</description><subject>Applied mathematics</subject><subject>Biology and Life Sciences</subject><subject>Bitter taste</subject><subject>Breweries</subject><subject>Brewing</subject><subject>Coffee</subject><subject>Coffee (Beverage)</subject><subject>Coffee - chemistry</subject><subject>Coffee industry</subject><subject>Computational fluid dynamics</subject><subject>Computer and Information Sciences</subject><subject>Computer applications</subject><subject>Control charts</subject><subject>Engineering</subject><subject>Flavors</subject><subject>Fluid dynamics</subject><subject>Fluid flow</subject><subject>Food</subject><subject>Food Handling - methods</subject><subject>Food processing</subject><subject>Food processing industry</subject><subject>Food processing machinery</subject><subject>Forecasts and trends</subject><subject>Generic drugs</subject><subject>Genetic aspects</subject><subject>Hot Temperature</subject><subject>Hydrodynamics</subject><subject>Industry standards</subject><subject>Mathematical analysis</subject><subject>Mathematical models</subject><subject>Mathematics</subject><subject>Matrix methods</subject><subject>Medicine and Health Sciences</subject><subject>Models, Theoretical</subject><subject>Nonuniform flow</subject><subject>Organic chemistry</subject><subject>Packed beds</subject><subject>Pharmaceutical industry</subject><subject>Physical Sciences</subject><subject>Plant extracts</subject><subject>Plant Extracts - chemistry</subject><subject>Porosity</subject><subject>Porous materials</subject><subject>Porous media</subject><subject>Quality</subject><subject>Research and Analysis Methods</subject><subject>Uniform flow</subject><subject>Variation</subject><subject>VOCs</subject><subject>Volatile organic compounds</subject><issn>1932-6203</issn><issn>1932-6203</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2019</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><sourceid>ABUWG</sourceid><sourceid>AFKRA</sourceid><sourceid>AZQEC</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><sourceid>GNUQQ</sourceid><sourceid>DOA</sourceid><recordid>eNqNk0uL2zAQx01p6T7ab1BaQ6G0h6SSZcn2pRCWPgILC31dhaxHoiBbrmSX5rYfvePEu8RlD8UgS6Pf_KWZ0STJC4yWmBT4_c4PoRVu2flWL1GGqwqxR8k5rki2YBkij0_mZ8lFjDuEKCkZe5qcEUwYhcV5crsCjX207SbVf_ogZG99mw6tNT40tt-nJvgm7XzwQ0ylN0brtNYqpsPBpxH9VsNgpXBp45V2bjSLVgHcdEMvRj3YM26wKlX7VjRWxlR0XfBCbnV8ljwxwkX9fPpfJj8-ffx-9WVxffN5fbW6XkhWZf2iqJXMa5NnQtKsJljlhBiMWZHREtJRFQYTkiGJTalzRmhewch0npdlTuvakMvk1VG3cz7yKXmRZxkrKGVlxYBYHwnlxY53wTYi7LkXlh8MPmy4CBCp01wIahRFGLEajjBVyajRJi8VgRWcB1ofptOGutFK6hZy62ai853WbvnG_-aMsbJEFQi8nQSC_zXo2PPGRgnpFa2GUhzuXcClKQL09T_ow9FN1EZAALY1fqz2KMpXtKIY5WU1ai0foOBTGuoGL81YsM8c3s0cgOnhIW3EECNff_v6_-zNzzn75oTdauH6bfRuGJ9TnIP5EZTBxxi0uU8yRnxslLts8LFR-NQo4PbytED3TnedQf4CfHYP9g</recordid><startdate>20190731</startdate><enddate>20190731</enddate><creator>Moroney, Kevin M</creator><creator>O'Connell, Ken</creator><creator>Meikle-Janney, Paul</creator><creator>O'Brien, Stephen B G</creator><creator>Walker, Gavin M</creator><creator>Lee, William T</creator><general>Public Library of Science</general><general>Public Library of Science (PLoS)</general><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>IOV</scope><scope>ISR</scope><scope>3V.</scope><scope>7QG</scope><scope>7QL</scope><scope>7QO</scope><scope>7RV</scope><scope>7SN</scope><scope>7SS</scope><scope>7T5</scope><scope>7TG</scope><scope>7TM</scope><scope>7U9</scope><scope>7X2</scope><scope>7X7</scope><scope>7XB</scope><scope>88E</scope><scope>8AO</scope><scope>8C1</scope><scope>8FD</scope><scope>8FE</scope><scope>8FG</scope><scope>8FH</scope><scope>8FI</scope><scope>8FJ</scope><scope>8FK</scope><scope>ABJCF</scope><scope>ABUWG</scope><scope>AFKRA</scope><scope>ARAPS</scope><scope>ATCPS</scope><scope>AZQEC</scope><scope>BBNVY</scope><scope>BENPR</scope><scope>BGLVJ</scope><scope>BHPHI</scope><scope>C1K</scope><scope>CCPQU</scope><scope>D1I</scope><scope>DWQXO</scope><scope>FR3</scope><scope>FYUFA</scope><scope>GHDGH</scope><scope>GNUQQ</scope><scope>H94</scope><scope>HCIFZ</scope><scope>K9.</scope><scope>KB.</scope><scope>KB0</scope><scope>KL.</scope><scope>L6V</scope><scope>LK8</scope><scope>M0K</scope><scope>M0S</scope><scope>M1P</scope><scope>M7N</scope><scope>M7P</scope><scope>M7S</scope><scope>NAPCQ</scope><scope>P5Z</scope><scope>P62</scope><scope>P64</scope><scope>PATMY</scope><scope>PDBOC</scope><scope>PIMPY</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PTHSS</scope><scope>PYCSY</scope><scope>RC3</scope><scope>7X8</scope><scope>5PM</scope><scope>DOA</scope><orcidid>https://orcid.org/0000-0002-4573-5137</orcidid></search><sort><creationdate>20190731</creationdate><title>Analysing extraction uniformity from porous coffee beds using mathematical modelling and computational fluid dynamics approaches</title><author>Moroney, Kevin M ; O'Connell, Ken ; Meikle-Janney, Paul ; O'Brien, Stephen B G ; Walker, Gavin M ; Lee, William T</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c692t-7bdc4bf42ac52b31d433f116725813797f13320c1f8e4635494636e448845bbf3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2019</creationdate><topic>Applied mathematics</topic><topic>Biology and Life Sciences</topic><topic>Bitter taste</topic><topic>Breweries</topic><topic>Brewing</topic><topic>Coffee</topic><topic>Coffee (Beverage)</topic><topic>Coffee - chemistry</topic><topic>Coffee industry</topic><topic>Computational fluid dynamics</topic><topic>Computer and Information Sciences</topic><topic>Computer applications</topic><topic>Control charts</topic><topic>Engineering</topic><topic>Flavors</topic><topic>Fluid dynamics</topic><topic>Fluid flow</topic><topic>Food</topic><topic>Food Handling - methods</topic><topic>Food processing</topic><topic>Food processing industry</topic><topic>Food processing machinery</topic><topic>Forecasts and trends</topic><topic>Generic drugs</topic><topic>Genetic aspects</topic><topic>Hot Temperature</topic><topic>Hydrodynamics</topic><topic>Industry standards</topic><topic>Mathematical analysis</topic><topic>Mathematical models</topic><topic>Mathematics</topic><topic>Matrix methods</topic><topic>Medicine and Health Sciences</topic><topic>Models, Theoretical</topic><topic>Nonuniform flow</topic><topic>Organic chemistry</topic><topic>Packed beds</topic><topic>Pharmaceutical industry</topic><topic>Physical Sciences</topic><topic>Plant extracts</topic><topic>Plant Extracts - chemistry</topic><topic>Porosity</topic><topic>Porous materials</topic><topic>Porous media</topic><topic>Quality</topic><topic>Research and Analysis Methods</topic><topic>Uniform flow</topic><topic>Variation</topic><topic>VOCs</topic><topic>Volatile organic compounds</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Moroney, Kevin M</creatorcontrib><creatorcontrib>O'Connell, Ken</creatorcontrib><creatorcontrib>Meikle-Janney, Paul</creatorcontrib><creatorcontrib>O'Brien, Stephen B G</creatorcontrib><creatorcontrib>Walker, Gavin M</creatorcontrib><creatorcontrib>Lee, William T</creatorcontrib><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>Gale In Context: Opposing Viewpoints</collection><collection>Gale In Context: Science</collection><collection>ProQuest Central (Corporate)</collection><collection>Animal Behavior Abstracts</collection><collection>Bacteriology Abstracts (Microbiology B)</collection><collection>Biotechnology Research Abstracts</collection><collection>Proquest Nursing & Allied Health Source</collection><collection>Ecology Abstracts</collection><collection>Entomology Abstracts (Full archive)</collection><collection>Immunology Abstracts</collection><collection>Meteorological & Geoastrophysical Abstracts</collection><collection>Nucleic Acids Abstracts</collection><collection>Virology and AIDS Abstracts</collection><collection>Agricultural Science Collection</collection><collection>Health & Medical Collection</collection><collection>ProQuest Central (purchase pre-March 2016)</collection><collection>Medical Database (Alumni Edition)</collection><collection>ProQuest Pharma Collection</collection><collection>Public Health Database</collection><collection>Technology Research Database</collection><collection>ProQuest SciTech Collection</collection><collection>ProQuest Technology Collection</collection><collection>ProQuest Natural Science Collection</collection><collection>Hospital Premium Collection</collection><collection>Hospital Premium Collection (Alumni Edition)</collection><collection>ProQuest Central (Alumni) (purchase pre-March 2016)</collection><collection>Materials Science & Engineering Collection</collection><collection>ProQuest Central (Alumni Edition)</collection><collection>ProQuest Central UK/Ireland</collection><collection>Advanced Technologies & Aerospace Collection</collection><collection>Agricultural & Environmental Science Collection</collection><collection>ProQuest Central Essentials</collection><collection>Biological Science Collection</collection><collection>ProQuest Central</collection><collection>Technology Collection</collection><collection>Natural Science Collection</collection><collection>Environmental Sciences and Pollution Management</collection><collection>ProQuest One Community College</collection><collection>ProQuest Materials Science Collection</collection><collection>ProQuest Central Korea</collection><collection>Engineering Research Database</collection><collection>Health Research Premium Collection</collection><collection>Health Research Premium Collection (Alumni)</collection><collection>ProQuest Central Student</collection><collection>AIDS and Cancer Research Abstracts</collection><collection>SciTech Premium Collection</collection><collection>ProQuest Health & Medical Complete (Alumni)</collection><collection>Materials Science Database</collection><collection>Nursing & Allied Health Database (Alumni Edition)</collection><collection>Meteorological & Geoastrophysical Abstracts - Academic</collection><collection>ProQuest Engineering Collection</collection><collection>ProQuest Biological Science Collection</collection><collection>Agricultural Science Database</collection><collection>Health & Medical Collection (Alumni Edition)</collection><collection>Medical Database</collection><collection>Algology Mycology and Protozoology Abstracts (Microbiology C)</collection><collection>Biological Science Database</collection><collection>Engineering Database</collection><collection>Nursing & Allied Health Premium</collection><collection>Advanced Technologies & Aerospace Database</collection><collection>ProQuest Advanced Technologies & Aerospace Collection</collection><collection>Biotechnology and BioEngineering Abstracts</collection><collection>Environmental Science Database</collection><collection>Materials Science Collection</collection><collection>Access via ProQuest (Open Access)</collection><collection>ProQuest One Academic Eastern Edition (DO NOT USE)</collection><collection>ProQuest One Academic</collection><collection>ProQuest One Academic UKI Edition</collection><collection>Engineering Collection</collection><collection>Environmental Science Collection</collection><collection>Genetics Abstracts</collection><collection>MEDLINE - Academic</collection><collection>PubMed Central (Full Participant titles)</collection><collection>DOAJ Directory of Open Access Journals</collection><jtitle>PloS one</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Moroney, Kevin M</au><au>O'Connell, Ken</au><au>Meikle-Janney, Paul</au><au>O'Brien, Stephen B G</au><au>Walker, Gavin M</au><au>Lee, William T</au><au>Tian, Fang-Bao</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Analysing extraction uniformity from porous coffee beds using mathematical modelling and computational fluid dynamics approaches</atitle><jtitle>PloS one</jtitle><addtitle>PLoS One</addtitle><date>2019-07-31</date><risdate>2019</risdate><volume>14</volume><issue>7</issue><spage>e0219906</spage><epage>e0219906</epage><pages>e0219906-e0219906</pages><issn>1932-6203</issn><eissn>1932-6203</eissn><abstract>Achieving a uniform extraction of soluble material from a porous matrix is a generic problem in various separation and filtration operations, with applications in the food processing, chemical and pharmaceutical industries. This paper describes models of fluid flow and transport of soluble material within a packed granular bed in the context of coffee extraction. Coffee extraction is described by diffusion of soluble material from particles of one or more representative sizes into fluid flowing through the packed bed. One-dimensional flow models are compared to computational fluid dynamics (CFD) models. A fine and a coarse coffee grind are considered. Model results are compared to experimental data for a packed cylindrical coffee bed and the influence of a change in geometry to a truncated cone is considered. Non-uniform flow in the truncated cone causes significant variation in the local extraction level. Coffee extraction levels during brewing are analysed using extraction maps and the degree of variation is represented on the industry standard coffee brewing control chart. A high variation in extraction yield can be expected to impart bitter flavours into the brew and thus is an important variable to quantify.</abstract><cop>United States</cop><pub>Public Library of Science</pub><pmid>31365538</pmid><doi>10.1371/journal.pone.0219906</doi><tpages>e0219906</tpages><orcidid>https://orcid.org/0000-0002-4573-5137</orcidid><oa>free_for_read</oa></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 1932-6203 |
| ispartof | PloS one, 2019-07, Vol.14 (7), p.e0219906-e0219906 |
| issn | 1932-6203 1932-6203 |
| language | eng |
| recordid | cdi_plos_journals_2267556896 |
| source | Public Library of Science (PLoS) Journals Open Access; MEDLINE; DOAJ Directory of Open Access Journals; EZB-FREE-00999 freely available EZB journals; PubMed Central; Free Full-Text Journals in Chemistry |
| subjects | Applied mathematics Biology and Life Sciences Bitter taste Breweries Brewing Coffee Coffee (Beverage) Coffee - chemistry Coffee industry Computational fluid dynamics Computer and Information Sciences Computer applications Control charts Engineering Flavors Fluid dynamics Fluid flow Food Food Handling - methods Food processing Food processing industry Food processing machinery Forecasts and trends Generic drugs Genetic aspects Hot Temperature Hydrodynamics Industry standards Mathematical analysis Mathematical models Mathematics Matrix methods Medicine and Health Sciences Models, Theoretical Nonuniform flow Organic chemistry Packed beds Pharmaceutical industry Physical Sciences Plant extracts Plant Extracts - chemistry Porosity Porous materials Porous media Quality Research and Analysis Methods Uniform flow Variation VOCs Volatile organic compounds |
| title | Analysing extraction uniformity from porous coffee beds using mathematical modelling and computational fluid dynamics approaches |
| url | https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2024-11-29T23%3A46%3A54IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-gale_plos_&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.atitle=Analysing%20extraction%20uniformity%20from%20porous%20coffee%20beds%20using%20mathematical%20modelling%20and%20computational%20fluid%20dynamics%20approaches&rft.jtitle=PloS%20one&rft.au=Moroney,%20Kevin%20M&rft.date=2019-07-31&rft.volume=14&rft.issue=7&rft.spage=e0219906&rft.epage=e0219906&rft.pages=e0219906-e0219906&rft.issn=1932-6203&rft.eissn=1932-6203&rft_id=info:doi/10.1371/journal.pone.0219906&rft_dat=%3Cgale_plos_%3EA595104890%3C/gale_plos_%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_pqid=2267556896&rft_id=info:pmid/31365538&rft_galeid=A595104890&rft_doaj_id=oai_doaj_org_article_aa5fd50106be44f9865fef48d344f45b&rfr_iscdi=true |