Sehlahisoa se secha sa Glucono-delta-lactone
Colorkem e phatlalalitse Sekeketso se secha sa Lijo: Glucono-delta-lactone ka la 20th.Phupu, 2022. Glucono-delta-lactone e khutsufalitsoe e le lactone kapa GDL, 'me foromo ea eona ea molek'hule ke C6Hl0O6.Liteko tsa chefo li pakile hore ke ntho e jeoang e seng chefo.kristale e tšoeu kapa phofo e tšoeu ea kristale, hoo e batlang e se na monko, pele e monate ebe e bolila ka tatso.qhibilihang ka metsing.Glucono-delta-lactone e sebelisoa e le coagulant, haholo-holo bakeng sa tlhahiso ea tofu, hape e le protheine coagulant bakeng sa lihlahisoa tsa lebese.
Molao-motheo
Molao-motheo oa glucoronolide coagulation ea tofu ke hore ha lactone e qhibiliha ka metsing ho ea ho gluconic acid, acid e na le phello ea acid coagulation ho protheine e lebeseng la soya.Hobane ho bola ha lactone ho batla ho le butle, mokhoa oa ho kopanya hamonate o tšoana le ts'ebetso e phahameng, kahoo tofu e entsoeng e tšoeu ebile e boreleli, e ntle ka ho arohana ha metsi, e hana ho pheha le ho halika, e monate ebile e ikhetha.Ho eketsa li-coagulant tse ling tse kang: gypsum, brine, calcium chloride, umami seasoning, joalo-joalo, le tsona li ka etsa tofu e monate e fapaneng.
Sebelisa
1. Tofu coagulant
Ho sebelisa glucono-delta-lactone e le protheine coagulant ho hlahisa tofu, sebopeho se tšoeu ebile se bonolo, ntle le ho baba le ho hlaba ha brine ea setso kapa gypsum, ha ho tahlehelo ea protheine, chai e ngata ea tofu, 'me ho bonolo ho e sebelisa.
Ka lebaka la 'nete ea hore ha GDL e sebelisoa e le mong, tofu e na le tatso e bolila hanyane,' me tatso e bolila ha e tšoanelehe bakeng sa tofu, kahoo GDL le CaSO4 kapa li-coagulants tse ling li atisa ho sebelisoa hammoho le tlhahiso ea tofu.Ho ea ka litlaleho, ha ho etsoa tofu e hloekileng (ke hore, tofu e bonolo), karo-karolelano ea GDL/CaSO4 e lokela ho ba 1/3-2/3, palo ea tlatsetso e lokela ho ba 2.5% ea boima ba linaoa tse omileng, mocheso o lokela ho laoloa 4 °C, 'me lihlahisoa tsa tofu li lokela ho omella.Ka makhetlo a 5 boima ba linaoa, 'me boleng le bona bo molemo.Leha ho le joalo, ho na le mathata a mang ao u lokelang ho a ela hloko ha u sebelisa GDL ho etsa tofu.Ka mohlala, ho tiea le ho hlafuna ha tofu e entsoeng ka GDL ha e ntle joaloka tofu ea setso.Ho phaella moo, palo ea metsi a ho hlatsoa e fokotseha, 'me protheine e ka har'a linaoa e lahleheloa haholo.
2. Moemeli oa ho roala lebese
GDL ha e sebelisoe feela joalo ka protheine ea coagulant bakeng sa tlhahiso ea tofu, empa hape e le protheine ea coagulant bakeng sa tlhahiso ea protheine ea lebese ea yogurt le chisi.Liphuputso li bontšitse hore matla a gel ea lebese la khomo le entsoeng ka acidification le GDL ke makhetlo a 2 a mofuta oa belisoa, athe matla a gel ea yogurt ea pōli e entsoeng ka acidification le GDL ke makhetlo a 8-10 a mofuta oa belisoa.Ba lumela hore lebaka la matla a futsanehileng a gel ea yoghurt e lomositsoeng e ka ba tšitiso ea lintho tse qalang (biomass le cellular polysaccharides) ho sebelisana ha gel lipakeng tsa liprotheine nakong ea ho belisoa.Liphuputso tse ling li bontšitse hore gel ea lebese e hlahisoang ke asiti ea addititive 3% GDL ka 30 °C e na le sebopeho se ts'oanang le gel e hlahisoang ke ho belisoa ha lactic acid.Ho boetse ho tlalehoa hore ho eketsa 0.025% -1.5% GDL lebese la nare ho ka finyella pH e hlokahalang ea curd, 'me tlatsetso e khethehileng e fapana le mafura a lebese la nare le mocheso oa ho teteana.
3. Ho ntlafatsa boleng
Tšebeliso ea GDL ka nama ea lijo tsa motšehare le nama ea kolobe e entsoeng ka makotikoting e ka eketsa phello ea moemeli oa mebala, kahoo e fokotsa bongata ba nitrite, e leng chefo ho feta.Bakeng sa boleng ba lijo tsa makotikoting, palo e kholo ea ho eketsoa ka nako ena ke 0.3%.Ho tlalehoa hore ho eketsoa ha GDL ho 4 ° C ho ka ntlafatsa elasticity ea fibrillin, 'me ho phaella ha GDL ho ka eketsa elasticity ea gel, ebang ke ka pel'a myosin le myosin kapa ka pel'a myosin feela.matla.Ho phaella moo, ho kopanya GDL (0.01% -0.3%), ascorbic acid (15-70ppm) le sucrose fatty acid ester (0.1% -1.0%) ka hlama e ka ntlafatsa boleng ba bohobe.Ho eketsa GDL lijong tse halikiloeng ho ka boloka oli.
4. Li-preservatives
Lipatlisiso tsa Saniea, marie-Helence et al.e bontšitse hore ho hlakile hore GDL e ka lieha le ho thibela tlhahiso ea phage ea libaktheria tsa lactic acid, kahoo e tiisa kholo e tloaelehileng le ho ikatisa ha libaktheria tsa lactic acid.Ho eketsa palo e loketseng ea GDL lebeseng ho thibela ho hloka botsitso ho bakoang ke phage ho boleng ba sehlahisoa sa chisi.Qvist, Sven et al.e ithutile ka thepa ea GDL ea boroso e kholo e khubelu, mme a fumana hore ho eketsa 2% lactic acid le 0.25% GDL ho sehlahisoa ho ka thibela ka katleho kholo ea Listeria.Mehlala e meholo ea boroso e khubelu e kentsoeng ka Listeria e bolokoa ho 10 °C matsatsi a 35 ntle le kholo ea baktheria.Mehlala e se nang li-preservative kapa sodium lactate feela e bolokiloe ho 10 °C mme baktheria e ne e tla hola ka potlako.Leha ho le joalo, ke habohlokoa ho hlokomela hore ha palo ea GDL e phahame haholo, batho ka bomong ba ka lemoha monko o bakoang ke eona.Ho boetse ho tlalehoa hore tšebeliso ea GDL le sodium acetate ka karolelano ea 0.7-1.5: 1 e ka lelefatsa bophelo ba sethala le bohobe bo hloekileng.
5. Li-acidifiers
Jwalo ka acidulant, GDL e ka ekeletswa ho sherbet e monate le jelly tse kang vanilla extract le chocolate banana.Ke ntho e ka sehloohong e nang le asiti e ka har'a motsoako oa tomoso, e ka hlahisang khase ea carbon dioxide butle-butle, li-bubble li tšoana hantle ebile lia tiea, 'me li ka hlahisa likuku tse nang le tatso e ikhethang.
6. Chelating agents
GDL e sebediswa e le sesebediswa sa chelating indastering ya lebese le biri ho thibela ho thehwa ha lactite le tartar.
7. Li-protein flocculants
Metsing a litšila a indasteri a nang le liprotheine, ho eketsoa ha flocculant e entsoeng ka letsoai la calcium, letsoai la magnesium le GDL ho ka etsa hore protheine e be agglutinate le precipitate, e ka tlosoang ka mekhoa ea 'mele.
Mehato ya tlhokomelo
Glucuronolactone ke kristale e tšoeu ea phofo, e ka bolokoang nako e telele tlas'a maemo a omileng, empa e senyeha habonolo hore e be acid sebakeng se mongobo, haholo-holo ka tharollo e nang le metsi.Mochesong oa kamore, lactone ka tharollo e senyehile ka mokhoa o itseng hore e be acid nakong ea metsotso e 30, 'me mocheso o ka holimo ho likhato tse 65.Lebelo la hydrolysis le potlakisa, 'me le tla fetoloa ka ho feletseng ho gluconic acid ha mocheso o le ka holimo ho likhato tse 95.Ka hona, ha lactone e sebelisoa e le coagulant, e lokela ho qhibiliha ka metsing a batang 'me e sebelisoe pele ho halofo ea hora.U se ke ua boloka tharollo ea eona ea metsi nako e telele.
Nako ea poso: Aug-15-2022