Faʻafesoʻotaʻi matou i le aso!

Sauniuniga oona o le Gallic

iconAcid Hydrolysis

O le metotia hydrolysis metotia e masani ona vaevaeina i le tasi-sitepu metotia ma lua-sitepu metotia. O le faʻagasologa o le gasologa o le lua-sitepu sauniuniga o le gallic acid raw material → toʻesea o le vai vevela → toega faʻamama → tannin aqueous solution faʻasologa e tusa o le 20% → acid hydrolysis → maalili crystallization maeʻa filtration Cooling ma crystallization → centrifugation → mago → maeʻa oloa o gallic acid. O le laʻasaga e tasi mo le sauniunia o le galic acid e aveʻesea ai le manaʻoga mo le tasi laʻasaga o le leyan cyanine peʻa faʻatusatusa i le laʻasaga e lua. E tuusaʻo faʻaopopoina ma acid hydrolysis, aveʻesea le manaʻoga mo le tuʻimomomoina, leaching, faʻasologa ma isi gaioiga, faʻapuʻupuʻuina o le gaosiga taʻamilosaga, ma le auala auala ma meafaigaluega tisaini talafeagai talafeagai, o le atinaʻeina o ana oloa ua ausia lelei penefiti tamaoaiga, ma maua o se auala e alu ese ai mo vaomatua punaoa i nofoaga maugā.

Ae ui i lea, o le sulfuric acid faʻaaogaina i le acid hydrolysis metotia o se malosi acid, lea e faʻapipiʻiina mea faigaluega i ni tikeri eseese. E ui lava o le tali faʻamama ma le pusaʻaisa na faia i le le 'elea uʻamea, ona o le maualuga tali atu vevela ma maualuga faʻavaʻaina acid, o le pala ua manino, lea e aʻafia ai le tautua olaga o mea faigaluega.

iconAlkaline Hydrolysis

Alkaline hydrolysis o le faʻamamaina o le vaega o mea mai fafo, e pei o le vai vai tannin fofo i lalo o alkaline tuʻutuʻuga, ona faʻamamaina lea ma faʻamaʻaina ma le acid e faʻatupuina ai le galic acid.

O le faʻagasologa autu e tafe mai ai mea masani → toʻesea mai o le vai vevela → alkali hydrolysis → faʻamamaina o le acid → faʻamamaina o le crystallization → centrifugation e maua ai ni oloa masoa → faʻaleagaina o le gaʻo ma le faʻamamaina o le malala

Faʻatusatusa i le metotia hydrolysis metotia, o le alkaline hydrolysis metotia e sili atu paʻutiʻu i meafaigaluega ma matua faʻaititia ai le faʻaititia o le aoga o meafaigaluega, ae o le gaioiga e sili atu ona faigata nai lo le metotia hydrolysis metotia. Ole tele ole gaosiga ole gaʻo ole fale e faʻaaogaina le hydrolysis alkaline. [3]

iconFaafefeteina

O le faʻafefeteina metotia faʻaaogaina microorganisms mo faʻafefeteina i se aqueous fofo aofia tannins, ma faʻaaoga kulukose i tannins o se carbon punaoa mo le tuputupu ae ma toe gaosia o microorganisms. O meaola oona na mafua mai i meaola niniʻi faʻaleagaina le hydrolysis o taninini.

Faʻagasologa o le gaosiga Oloa mea masani i le lapoa e laʻititi ifo i le 10mm → pupuni iniseti pauta → faʻatofu i le vai e faʻatupu ai le 30% tannin solution → faʻaopopo ituaiga uliuli suia → faʻafefeteina mo 8-9 aso → faʻamamaina → fufuluina → faʻatamaia o le galic acid → faʻateʻaina recrystallization → alamanuia gallic acid.

O le faʻafitauli autu lava i le faʻafefeteina o auala o le faʻatutuina o meaola o le ola ma le hydrolysis o taninini o loʻo faʻatinoina i totonu o le vaʻa tali tutusa, ma o faʻagasologa o tulaga e faigata ona oʻo atu i le tulaga sili ona lelei, e mafua ai le umi o le taʻamilosaga (sili atu i le 3 aso), le atoatoa hydrolysis o tannins, ma toega tannins Up i le 15% ~ 20%.

iconEnzymatic

Ile vaʻai atu i faʻaletonu ole metotia faʻapipiʻiina, o suʻesuʻega i luga ole faiga fou ole enzymatic ua atiaʻe i le fale ma fafo atu. O le ki i le metotia enzymatic o le vailiili ma sauniuni lelei tele meaola o le ola. Tanninase o le acetyl hydrolase, o le extrasporal induced acyl hydrolase, lea e mafai lelei, faʻapitoa, ma vaeluaina le ester bond, depsil bond ma glycosidic fusia i tannin molelaʻe e gaosia ai gallic acid. I lalo o tulaga talafeagai, ituaiga eseese ma inducer tannins mafai gaosia tannase. O le masani faʻaaogaina o Aspergillus niger.

Faʻagasologa o le tafe Enzyme fatu totoina → faʻamalosia o le gaosia o le enzyme → (faʻaopopoina o mea masani)

Faʻatusatusa i le faʻafefeteina metotia, o le metotia faʻasolosolo ua matua faʻapuʻupuʻuina le taimi o tali, o le tannin hydrolysis rate rate ua sili atu i le 98%, ma o le faʻaaogaina faʻasino igoa ma gaosiga tau e matua faʻaititia.


Taimi Post: Fep-23-2021