USE OF HOP ACIDS IN FUEL ETHANOL PRODUCTION
Six hop acids are common to hops and beer: alpha acid, beta acids, isoalpha acids, rho-isoalpha acids, tetrahydro-isoalpha acids, and hexahydro-isoalpha acids. The six hop acids were tested to determine which were the most effective in inhibiting the growth of bacteria common to fuel ethanol product...
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| creator | MAYE JOHN P |
| description | Six hop acids are common to hops and beer: alpha acid, beta acids, isoalpha acids, rho-isoalpha acids, tetrahydro-isoalpha acids, and hexahydro-isoalpha acids. The six hop acids were tested to determine which were the most effective in inhibiting the growth of bacteria common to fuel ethanol production. The bacteria used in the tests were Lactobacillus brevis and Lactobacillus fermentum. The minimum inhibitory concentrations (MIC) of the hop acids were determined using MRS-broth. Molasses mash and wheat mashes were used as the growth media for the fermentations. In all cases the hop acids controlled the growth of these two lactobacillus bacteria with tetrahydroisoalpha acid, hexahydroisoalpha acid, and isoalpha acid killing the most bacteria at the lowest MIC. Treating yeast propagators, steep tanks, and fermenters with a minimum inhibitory concentration of hop acids will stop bacteria growth, increase ethanol yields and avoid the need for antibiotics. |
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The six hop acids were tested to determine which were the most effective in inhibiting the growth of bacteria common to fuel ethanol production. The bacteria used in the tests were Lactobacillus brevis and Lactobacillus fermentum. The minimum inhibitory concentrations (MIC) of the hop acids were determined using MRS-broth. Molasses mash and wheat mashes were used as the growth media for the fermentations. In all cases the hop acids controlled the growth of these two lactobacillus bacteria with tetrahydroisoalpha acid, hexahydroisoalpha acid, and isoalpha acid killing the most bacteria at the lowest MIC. Treating yeast propagators, steep tanks, and fermenters with a minimum inhibitory concentration of hop acids will stop bacteria growth, increase ethanol yields and avoid the need for antibiotics.</description><language>eng</language><subject>AGEING ; APPARATUS SPECIALLY ADAPTED THEREFOR ; BEER ; BIOCHEMISTRY ; BREWING OF BEER ; CHEMISTRY ; CLARIFICATION ; COMPOSITIONS THEREOF ; CULTURE MEDIA ; ENZYMOLOGY ; FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIREDCHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERSFROM A RACEMIC MIXTURE ; FOODS OR FOODSTUFFS ; FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BYSUBCLASSES A23B - A23J ; HUMAN NECESSITIES ; METALLURGY ; MICROBIOLOGY ; MICROORGANISMS OR ENZYMES ; MUTATION OR GENETIC ENGINEERING ; PASTEURISATION ; PRESERVATION ; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL ; PRODUCTION OF SUCROSE ; PROPAGATING, PRESERVING OR MAINTAINING MICROORGANISMS ; PURIFICATION ; SPIRITS ; STERILISATION ; SUGAR INDUSTRY ; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OFNUTRITIVE QUALITIES, PHYSICAL TREATMENT ; THEIR TREATMENT, NOT COVERED BY OTHER CLASSES ; VINEGAR ; WINE</subject><creationdate>2009</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20090212&DB=EPODOC&CC=US&NR=2009042276A1$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,309,781,886,25569,76552</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20090212&DB=EPODOC&CC=US&NR=2009042276A1$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>MAYE JOHN P</creatorcontrib><title>USE OF HOP ACIDS IN FUEL ETHANOL PRODUCTION</title><description>Six hop acids are common to hops and beer: alpha acid, beta acids, isoalpha acids, rho-isoalpha acids, tetrahydro-isoalpha acids, and hexahydro-isoalpha acids. The six hop acids were tested to determine which were the most effective in inhibiting the growth of bacteria common to fuel ethanol production. The bacteria used in the tests were Lactobacillus brevis and Lactobacillus fermentum. The minimum inhibitory concentrations (MIC) of the hop acids were determined using MRS-broth. Molasses mash and wheat mashes were used as the growth media for the fermentations. In all cases the hop acids controlled the growth of these two lactobacillus bacteria with tetrahydroisoalpha acid, hexahydroisoalpha acid, and isoalpha acid killing the most bacteria at the lowest MIC. Treating yeast propagators, steep tanks, and fermenters with a minimum inhibitory concentration of hop acids will stop bacteria growth, increase ethanol yields and avoid the need for antibiotics.</description><subject>AGEING</subject><subject>APPARATUS SPECIALLY ADAPTED THEREFOR</subject><subject>BEER</subject><subject>BIOCHEMISTRY</subject><subject>BREWING OF BEER</subject><subject>CHEMISTRY</subject><subject>CLARIFICATION</subject><subject>COMPOSITIONS THEREOF</subject><subject>CULTURE MEDIA</subject><subject>ENZYMOLOGY</subject><subject>FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIREDCHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERSFROM A RACEMIC MIXTURE</subject><subject>FOODS OR FOODSTUFFS</subject><subject>FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BYSUBCLASSES A23B - A23J</subject><subject>HUMAN NECESSITIES</subject><subject>METALLURGY</subject><subject>MICROBIOLOGY</subject><subject>MICROORGANISMS OR ENZYMES</subject><subject>MUTATION OR GENETIC ENGINEERING</subject><subject>PASTEURISATION</subject><subject>PRESERVATION</subject><subject>PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL</subject><subject>PRODUCTION OF SUCROSE</subject><subject>PROPAGATING, PRESERVING OR MAINTAINING MICROORGANISMS</subject><subject>PURIFICATION</subject><subject>SPIRITS</subject><subject>STERILISATION</subject><subject>SUGAR INDUSTRY</subject><subject>THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OFNUTRITIVE QUALITIES, PHYSICAL TREATMENT</subject><subject>THEIR TREATMENT, NOT COVERED BY OTHER CLASSES</subject><subject>VINEGAR</subject><subject>WINE</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2009</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZNAODXZV8HdT8PAPUHB09nQJVvD0U3ALdfVRcA3xcPTz91EICPJ3CXUO8fT342FgTUvMKU7lhdLcDMpuriHOHrqpBfnxqcUFicmpeakl8aHBRgYGlgYmRkbmZo6GxsSpAgDdAyWI</recordid><startdate>20090212</startdate><enddate>20090212</enddate><creator>MAYE JOHN P</creator><scope>EVB</scope></search><sort><creationdate>20090212</creationdate><title>USE OF HOP ACIDS IN FUEL ETHANOL PRODUCTION</title><author>MAYE JOHN P</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_US2009042276A13</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng</language><creationdate>2009</creationdate><topic>AGEING</topic><topic>APPARATUS SPECIALLY ADAPTED THEREFOR</topic><topic>BEER</topic><topic>BIOCHEMISTRY</topic><topic>BREWING OF BEER</topic><topic>CHEMISTRY</topic><topic>CLARIFICATION</topic><topic>COMPOSITIONS THEREOF</topic><topic>CULTURE MEDIA</topic><topic>ENZYMOLOGY</topic><topic>FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIREDCHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERSFROM A RACEMIC MIXTURE</topic><topic>FOODS OR FOODSTUFFS</topic><topic>FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BYSUBCLASSES A23B - A23J</topic><topic>HUMAN NECESSITIES</topic><topic>METALLURGY</topic><topic>MICROBIOLOGY</topic><topic>MICROORGANISMS OR ENZYMES</topic><topic>MUTATION OR GENETIC ENGINEERING</topic><topic>PASTEURISATION</topic><topic>PRESERVATION</topic><topic>PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL</topic><topic>PRODUCTION OF SUCROSE</topic><topic>PROPAGATING, PRESERVING OR MAINTAINING MICROORGANISMS</topic><topic>PURIFICATION</topic><topic>SPIRITS</topic><topic>STERILISATION</topic><topic>SUGAR INDUSTRY</topic><topic>THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OFNUTRITIVE QUALITIES, PHYSICAL TREATMENT</topic><topic>THEIR TREATMENT, NOT COVERED BY OTHER CLASSES</topic><topic>VINEGAR</topic><topic>WINE</topic><toplevel>online_resources</toplevel><creatorcontrib>MAYE JOHN P</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>MAYE JOHN P</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>USE OF HOP ACIDS IN FUEL ETHANOL PRODUCTION</title><date>2009-02-12</date><risdate>2009</risdate><abstract>Six hop acids are common to hops and beer: alpha acid, beta acids, isoalpha acids, rho-isoalpha acids, tetrahydro-isoalpha acids, and hexahydro-isoalpha acids. The six hop acids were tested to determine which were the most effective in inhibiting the growth of bacteria common to fuel ethanol production. The bacteria used in the tests were Lactobacillus brevis and Lactobacillus fermentum. The minimum inhibitory concentrations (MIC) of the hop acids were determined using MRS-broth. Molasses mash and wheat mashes were used as the growth media for the fermentations. In all cases the hop acids controlled the growth of these two lactobacillus bacteria with tetrahydroisoalpha acid, hexahydroisoalpha acid, and isoalpha acid killing the most bacteria at the lowest MIC. Treating yeast propagators, steep tanks, and fermenters with a minimum inhibitory concentration of hop acids will stop bacteria growth, increase ethanol yields and avoid the need for antibiotics.</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | AGEING APPARATUS SPECIALLY ADAPTED THEREFOR BEER BIOCHEMISTRY BREWING OF BEER CHEMISTRY CLARIFICATION COMPOSITIONS THEREOF CULTURE MEDIA ENZYMOLOGY FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIREDCHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERSFROM A RACEMIC MIXTURE FOODS OR FOODSTUFFS FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BYSUBCLASSES A23B - A23J HUMAN NECESSITIES METALLURGY MICROBIOLOGY MICROORGANISMS OR ENZYMES MUTATION OR GENETIC ENGINEERING PASTEURISATION PRESERVATION PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL PRODUCTION OF SUCROSE PROPAGATING, PRESERVING OR MAINTAINING MICROORGANISMS PURIFICATION SPIRITS STERILISATION SUGAR INDUSTRY THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OFNUTRITIVE QUALITIES, PHYSICAL TREATMENT THEIR TREATMENT, NOT COVERED BY OTHER CLASSES VINEGAR WINE |
| title | USE OF HOP ACIDS IN FUEL ETHANOL PRODUCTION |
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