Tlhahlobo ea Ts'ebetso ea Tlhahiso ea Gelatin ka Mokhoa oa Alkaline

Gelatin ke colloid e sebelisoang haholo indastering ea lijo, meriana, litlolo le liindasteri tse ling. Ho na le mekhoa e fapaneng ea tlhahiso, eo har'a eona mokhoa oa alkaline o sebelisoang haholo. Ka tlase ke tlhaloso e qaqileng ea ts'ebetso ea mokhoa oa alkaline:
Ⅰ. Ho Lokisetsa Lintho tse Tala

Taba ea pele, thepa e tala e ruileng ka collagen, tse kang matlalo kapa masapo a liphoofolo, lia lokisoa. Lisebelisoa tsena li theha motheo oagelatin tlhahiso, 'me boleng ba tsona bo ama sehlahisoa sa ho qetela ka kotloloho. Ka hona, thepa e tala e tlameha hoe foreshe ebile e se na tšilafalonakong ea khetho.

II. Kalafo ea Alkaline

Ka mor'a moo, thepa e tala e phekoloa ka alkaline. Sepheo ke ho:

1. Tlosa likarolo tse seng tsa collagen (mohlala, mafura, litšila).
2. Kolagen e haelloang ka karolo e itseng ho ntlafatsa ho qhibiliha ha eona.

Litaolo tsa Bohlokoa:

• Mahloriso a Alkali: Hangata tharollo ea 2–5% ea sodium hydroxide (NaOH) kapa 1–3% ea calcium hydroxide (Ca(OH)₂).
• Thempereichara: E bolokoe mochesong oa 15–25°C ho qoba ho haelloa ke metsi ho feteletseng.
• Nako: Lihora tse 12–48 (li fapana ho latela mofuta oa thepa e tala le botenya).
  
  

  Ⅲ. Sefe
  Kamora kalafo ea alkaline, motsoako o sefshoa ho tlosa litšila tse tiileng. Mekhoa e tloaelehileng e kenyelletsa:

  • Ho Sila ka Letlooeng le Letle: Ho sebedisa di-screen tsa letlooeng tse 80–100 ho arola dikarolwana tse kgolo.
  • Ho Centrifugation: Bakeng sa litšila tse tšesaane, ho centrifugation ka 3000–5000 rpm ke khetho.

  Sepheo ke ho fumanamokelikeli o hlakileng, o se nang litšila.
  Ⅳ. Ho tsepamisa maikutlo

  Mokelikeli o sefiloeng o kopanngoa ho eketsa gelatin mahloriso (hangata ho tloha ho 5–10% ho isa ho 20–30%). Sena hangata se finyelloa kamouoane o futhumetsengtlas'a maemo a laoloang:

  • Thempereichara: 60–70°C ho thibela ho fetoha ha collagen.
  • Pherekano: Ho hlohlelletsa ho sa khaotseng ho qoba ho chesa haholo le ho chesa sebakeng seo.
    
    Ⅴ. Ho omisa
    

    Qetellong, tharollo e tiileng ea gelatin e omisoa ho hlahisa sehlahisoa sa ho qetela. Mekhoa e tloaelehileng ea ho omisa e kenyelletsa:

    1. Ho omisa ka Spray: Ho atomisa tharollo hore e be marotholi le ho omisa ka moea o chesang (120–140°C) ho etsa phofo.
    2. Ho omisa ka vacuum: Ho omisa ka mocheso oa 40–50°C tlas'a vacuum ho boloka litšobotsi tsa ts'ebetso ea gelatin.

    Ho sa tsotelehe hore na mokhoa ofe o amohetsweng, taolo e tiileng ea mocheso le nako ea hlokahala ho netefatsa boleng le botsitso ba sehlahisoa.