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OOT 2023 Organik kimyo
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- ___________ ___________________________________ (imzo) 14-- LABORATORIYA MASHG’ULOTI Sana:_________________ Mavzu: OQSILLARGA XOS TAJRIBALAR
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XULOSA__________________________________________________________________ _________________________________________________________________________________ _________________________________________________________________________________ _________________________________________________________________________________ _________________________________________________________________________________ _________________________________________________________________________________ Laboratoriya ishini tajriba qismini topshirish__________ Talaba ____________ ___________________________________ (imzo) O‘qituvchi ___________ ___________________________________ (imzo) 14-- LABORATORIYA MASHG’ULOTI Sana:_________________ Mavzu: OQSILLARGA XOS TAJRIBALAR Ishning maqsadi: Oqsillarga xos tajribalarni o’tkazish. Nazariy bilimlarni amaliyotda mustahkamlash 1-tajriba. Oqsilni organik erituvchilar bilan cho`ktirish. Reaktivlar: tuxum oqsilining l %li eritmasi, etil spirt, atseton. 16 Ikkita probirkaning har biriga tuxum oqsilining l % li eritmasidan 1ml dan qo`shib, birinchi probirkaga 3 - 4 ml spirt, ikkinchisiga esa 3 – 4 ml atseton qo`shiladi. Bunda har ikkala probirkada ham loyqalanish kuzatiladi va so`ngra oqsil cho`kmasi hosil bo`ladi. XULOSA_________________________________________________________________________ _________________________________________________________________________________ _________________________________________________________________________________ _________________________________________________________________________________ _________________________________________________________________________________ _________________________________________________________________________________ _________________________________________________________________________________ _________________________________________________________________________________ __________________________________________________________________________ 2-tajriba. Oqsilni konsentrlangan mineral kislotalar bilan cho`ktirish. Reaktivlar: tuxum oqsilining l%li eritmasi, konsentrlangan nitrat kislota. Probirkaga 1 – 2 ml konsentrlangan nitrat kislota quyiladi va probirkani qiya holda ushlab, ehtiyotlik bilan probirka devori bo`ylab pipetka yordamida teng hajmdagi tuxum oqsilining eritmasi quyiladi. Ikkala suyuqlik qatlami chegarasida yupqa parda ko`rinishida oqsil cho`kmasi hosil bo`ladi. Tajribani o`tkazishda konsentrlangan sulfat yoki xlorid kislotadan foydalanish mumkin. Oqsil konsentrlangan kislotalar ta`sirida denaturalizatsiyalanadi va degidratlanadi, kolloid zarrachalardagi zaryadning neytrallanishi oqibatida cho`kma hosil bo`ladi. Download 0.73 Mb. Do'stlaringiz bilan baham: |
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