Isithombe: I-Active Craft Beer Fermentation ku-Beaker

Lesi sithombe sithwebula umzuzwana wenguquko eguquguqukayo ngaphakathi kwendawo yokuphisa ngobungcweti, lapho umsebenzi ongabonakali wemvubelo wenziwa ubonakale ngokunyakaza okuphenduphendukayo koketshezi olubilayo. Enkabeni yokwakheka kunobhakha wengilazi okhanyelayo, ogcwele isixazululo esinamafu, esinombala we-amber esikhanya ngokufudumele ngaphansi kokukhanya okuqondisayo. Lolu ketshezi luyasebenza—amabhamuza amancane akhuphuka kancane esuka ekujuleni, akhe igwebu elithambile futhi enze amaphethini ayinkimbinkimbi ajikelezayo kuwo wonke umzimba woketshezi. Lezi zinkomba ezibukwayo zikhuluma namandla okwenziwa kwe-metabolic kwesiko lemvubelo ngaphakathi, ukuguqula ushukela ube utshwala ne-carbon dioxide enqubweni yakudala necwengiwe ngokwesayensi.

Umbala wenhlaka woketshezi uphakamisa isisekelo se-malt-rich wort, okungenzeka yakhelwe i-ale egcwele umzimba noma ubhiya okhethekile. Ukuba namafu kubonisa ukuba khona kwamaseli eyeast amisiwe, amaprotheni, nezinhlanganisela ze-hop, konke okunomthelela enkingeni yokuvutshelwa. Igwebu phezulu alifani kodwa lithungwe futhi alilingani, libonisa ukuhlukahluka kwemvelo kwezinqubo zebhayoloji kanye nohlamvu oluyingqayizivele lwenqwaba ngayinye. Ukunyakaza okuzungezayo ngaphakathi kwebhika kuveza umuzwa wokujula namandla, njengokungathi uketshezi ngokwalo luxoxa nama-microbial agents ashayela ukuguqulwa kwalo.

Ikhanyisiwe ukusuka ohlangothini, ibhika lenza ukukhanya okuthambile kanye nethunzi endaweni ebushelelezi lapho lihlezi khona. Ukukhanyisa kufudumele futhi kugolide, kuthuthukisa amathoni acebile oketshezi futhi kugcizelela ukuthungwa nokunyakaza kwawo. Lokhu kukhanya kwengeza ungqimba lokusondelana esigcawini, kumema umbukeli ukuthi abukele eduze futhi ajabulele ubuhle obucashile bokuvutshelwa. Futhi kufeza injongo engokoqobo, okuvumela ukuhlolwa okucacile okubonakalayo kokucaca koketshezi, ukugcinwa kwegwebu, nomsebenzi wamabhamuza—izinkomba eziyinhloko zempilo nokuqhubeka kokuvutshelwa.

Ngemuva, isithombe siyafiphala sibe isilungiselelo semboni esifiphele kancane. Izinto eziyinsimbi eziyisilinda—cishe amathange okuvubela noma izitsha zokuphisa utshwala—zima zithule, izindawo zazo ezipholishiwe zibamba ukubenyezela kokukhanya. Lokhu okwasemuva kuphakamisa umsebenzi wokuphisa omkhulu, oyinkimbinkimbi, lapho ibhikha elingaphambili liyingxenye yesistimu ebanzi yokuhlola, yokulawula ikhwalithi, noma ukuthuthukiswa kweresiphi. Ubuhle bezimboni buqinisa umuzwa wokunemba nobungcweti, kuyilapho ukufiphala kugcina kugxile kubhekha nokuqukethwe kwalo.

Ingqikithi yokwakheka ibhalansiswe ngokucophelela, ihlanganisa uphenyo lwesayensi nomsebenzi wezandla. Idlulisa isimo selukuluku nokulawula, lapho okuguquguqukayo ngakunye kugadwa futhi ukubonwa ngakunye kunomthelela ekuqondeni okujulile kokuziphatha kwemvubelo nokuthuthukiswa kukabhiya. Isithombe simema umbukeli ukuthi acabangele ubunkimbinkimbi bokuvutshelwa—hhayi nje njengokusabela kwamakhemikhali, kodwa njengenqubo ephilayo elolongwa yisayensi yezinto eziphilayo, indawo ezungezile, kanye nenhloso yomuntu.

Ekugcineni, lesi sithombe siwumkhosi wokugubha amandla okuguqula imvubelo kanye nokunakekelwa okucophelela okudingekayo ukuze kusetshenziswe. Ihlonipha ukuphambana kwesiko nokuqanjwa kabusha, lapho amasu akudala elungiswa ngesayensi yesimanje ukuze kukhiqizwe iziphuzo ezijulile, umlingiswa, kanye nekhwalithi. Ngokukhanya kwaso, ukwakheka, nemininingwane, isithombe sixoxa indaba yokuvutshelwa njengokubili impumelelo yobuchwepheshe kanye nohambo lwezinzwa—oluqala ngoketshezi olunamafu kubhekha wengilazi futhi lugcine ngephinti eliklanywe kahle.

Isithombe sihlobene: Ukuvubela Ubhiya nge-CellarScience Berlin Yeast