beer brewing process
TRANSCRIPT
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Ingeniør i Kemi og Bioteknologi
7 semester
Af
Christian Seeberg Christiansen
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Det Tekniske Fakultet i Odense
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Det Tekniske Fakultet i Odense
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21 ingeniøruddannelserDiplomingeniør (3,5 år inkl. praktik)
• Bygningsteknik
• Elektroteknik
• Global Management and
Manufacturing
• Integreret Design
• Interaction Design *
• It
• Kemiteknik
• Maskinteknik
• Mekatronik *
• Produktionsteknik
• Stærkstrømsteknik
Civilingeniør
(bachelor 3 år + kandidat 2 år)
• Fysik og Teknologi
• Innovation and Business *
• Kemi og Bioteknologi
• Lærings- og Oplevelsesteknologi
• Mekatronik *
• Product Development and Innovation
• Robotteknologi
• Velfærdsteknologi
• Energiteknologi
• Software Engineering
• Miljøteknologi (kun kandidat)
• Konstruktionsteknik (kun kandidat)
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Om Kemi Ingeniør Uddannelsen
• Grundlæggende
mat+fys
• Kemi
• Biokemi
• Mikrobiologi
• Industrielle processer
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Om Kemi Ingeniør Uddannelsen
• Klasseundervisning
• Forelæsninger
• Opgaveregning
• Virksomhedsbesøg
• Semesterprojekter
• Laboratoriearbejde
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Studiemiljø
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Uddannelsens opbygningDiplomingeniør i Kemiteknik
1.-5. semester:
- Innovation, proces og produktdesign
- Analysemetoder og anvendt statistik
- Fødevare- og bioteknologi
- Energi og materialer
- Kemisk produktion og miljø
6. semester- Ingeniørpraktik
7. Semester
- Afgangsprojekt
Bachelor i Kemi og Bioteknologi/civilingeniør i
Kemi
1.-5. semester:
- Innovation, proces og produktdesign
- Analysemetoder og anvendt statistik
- Fødevare- og bioteknologi
- Energi og materialer
- Kemisk produktion og miljø
6. semester
- Bachelorprojekt
7.-9. semester- Fagprofil-kurser/ valgfrie kurser
10. semester- speciale
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Karrieremuligheder
• Ansvarsområder:
– Forskning, udvikling, ledelse, produktion,
analyser, miljø- og kvalitetssikring og
undervisning.
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Karrieremuligheder
• Ansættelsesområder:
– F.eks. Kemisk industri, levnedsmiddel- og
medicinalindustri, ved miljøforvaltning eller
laboratorier.
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Ølbrygningsprojekt
Problemstilling
– Brygge øl med 25 % alkohol!
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Hvordan gør vi det?
• Speciel amerikansk gær
• Utraditionel brygningsmetode
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Råstoffer
• Malt
• Humle
• Gær
• Vand
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Fremstilling af øl
• (Maltning)
• Mæskning
• Urtkogning
• Fermentering
• Filtrering
• Tapning
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Fremstilling af øl
• FlowSheet.
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Råstoffer
• Malt
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Fremstilling af øl
• FlowSheet.
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Fremstilling af øl
• Formål med mæskning:
– At omdanne malt til forgærbare sukkerstoffer
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Fremstilling af øl
• Monosaccharider
• Polysaccharider
• Disaccharider
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Fremstilling af øl
a-amylase:
– 70oC - 74oC
b-amylase:
– 58oC - 65oC
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Fremstilling af øl
• FlowSheet.
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Fremstilling af øl• Aromagivende stoffer i humle:
– Resin og lupulin
• Bitterhed
– Over 300 forskellige æteriske olier
• Olierne giver aromatiske nuancer
– Konservering
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Fremstilling af øl
• FlowSheet.
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Fermentering
• Respiration𝐶6𝐻12𝑂6 + 6 𝑂2 → 6 𝐻2𝑂 + 6 𝐶𝑂2
Energiudbytte: 38 ATP
• Fermentering𝐶6𝐻12𝑂6 → 2 𝐶2𝐻5𝑂𝐻 + 2 𝐶𝑂2
Energiudbytte: 2 ATP
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Fermentering
Substrat Udover sukkerstoffer
De vigtigste salte er bl.a.
- Zink, minimum 0,2 mg/L
- Phosphat, essentiel for ATP
- Magnesium – vigtig for phosphat reaktioner
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Fermentering
• Primære fase – umodne øl
• Sekundære fase – modne øl
Gærens Vækstfaser
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Fermentering
• Modning af øllens smag efter brygning
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Fermentering
Bundgær (Lager)Saccharomyces Carlsbergensis
Ca. 10oC
Topgær (Ale)Saccharomyces Cerevisae
15 - 20oC
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Fremstilling af øl
• FlowSheet.
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Filtrering
• Formål:• Fjerne uønskede partikler
• uklarhed
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Filtrering
• Øl – kompleks væske
– Mange opløste stoffer
• Ønskede – makromolekyler
• Uønskede – gærceller, kolloide partiklerKlasse: Eksempel: Typisk størrelse:
Celler Gærceller ≈ 5 – 13 mm
Kolloide partikler Proteiner, polyphenoler ≈ 0,5 - 2 mm
Makromolekyler Proteiner, kulhydrater ≤ 0,4 mm
• Optimal porediameter – 0,45 mm
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Filtrering
• Traditionelt:
– Dead-end filtrering:
• Filterhjælp: Kiselgur
• Problemer:
– Ikke fremtidssikret
– Ikke miljøvenligt
– Ikke arbejdsmiljøvenligt
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Filtrering
• Crossflow filtrering
– Ikke helt så effektivt som dead-end
• Back flushing
• Omvendt montering
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Laboratoriearbejde
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Brygningsudstyr
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Bioreaktor
- Udtagning af prøver
- Temperatur
- Beluftning
- Tilsætning af substrat
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Analysering
• pH
• Brix (sukker)
• Celletælling
• HPLC
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Forsøgsresultat
• C6H12O6 → 2 C2H5OH + 2 CO2
• Resultat: 10,08% alcohol
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Bliv studerende for en dag
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