MD3099F1 - Procedeu de obtinere a hialuronatului de sodiu, acidului hialuronic si complexului acid hialuronic-proteina - Google Patents

Procedeu de obtinere a hialuronatului de sodiu, acidului hialuronic si complexului acid hialuronic-proteina

Info

Publication number
MD3099F1
MD3099F1 MDA20050349A MD20050349A MD3099F1 MD 3099 F1 MD3099 F1 MD 3099F1 MD A20050349 A MDA20050349 A MD A20050349A MD 20050349 A MD20050349 A MD 20050349A MD 3099 F1 MD3099 F1 MD 3099F1
Authority
MD
Moldova
Prior art keywords
hyaluronic acid
ratio
stage
sodium hyaluronate
acetone
Prior art date
Application number
MDA20050349A
Other languages
English (en)
Other versions
MD3099G2 (ro
Inventor
Larisa Zadorojnai
Original Assignee
Universitatea Tehnica A Moldovei
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Universitatea Tehnica A Moldovei filed Critical Universitatea Tehnica A Moldovei
Priority to MDA20050349A priority Critical patent/MD3099G2/ro
Publication of MD3099F1 publication Critical patent/MD3099F1/ro
Publication of MD3099G2 publication Critical patent/MD3099G2/ro

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  • Polysaccharides And Polysaccharide Derivatives (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)

Abstract

Inventia se refera la un procedeu de obtinere a hialuronatului de sodiu, acidului hialuronic si complexului acid hialuronic-proteina, care pot fi utilizate in industria alimentara, farmaceutica si cosmetica. Esenta inventiei consta in aceea ca procedeul include spalarea crestelor de cocosi, gaini cu apa la temperatura de 10...15°C timp de 5...6 ore, maruntirea si deshidratarea lor in acetona sau etanol de 96%, care contine 1% CHCl3, in raport de1:3, dupa care se lasa pentru 6...24 ore la temperatura de 0...4°C, apoi solventul se separa si se efectueaza deshidratarea suplimentara si degresarea cu acetona la fierbere timp de 2 ore, sedimentulobtinut se usuca si se supune extragerii cu solutie apoasa de 1M NaCl in doua stadii: I stadiu la rece la 4...10°C si al II-lea stadiu la incalzire pana la 50...60°C, totodata la I stadiu se efectueaza extragerea in raport de 1:20 de trei ori, se separa reziduul de extract, dupa care se efectueaza sedimentarea acidului hialuronic din extract cu etanol de 96% in raport de 1:3, sedimentul se redizolva si se elimina proteinele din el la incalzire si racire la pH 5,0...5,5, se adauga CHCl3 in raport de 1:1, se separa faza apoasa, se trateaza cu etanol de 96% in raport de 1:3, se separa sedimentulformat de hialuronat de sodiu cu un continut de proteina de cel mult 1%, iar acidul hialuronic se obtine la acidularea cu HCl a solutiei apoase de hialuronat de sodiu; la al II-lea stadiu reziduul obtinut la I stadiu se extrage in raport de 1:3, apoi se sedimenteaza cu acetona obtinand un complex acid hialuronic-proteina cu un continut de proteinade 65%.
MDA20050349A 2005-11-29 2005-11-29 Procedeu de obţinere a hialuronatului de sodiu, acidului hialuronic şi complexului acid hialuronic-proteină MD3099G2 (ro)

Priority Applications (1)

Application Number Priority Date Filing Date Title
MDA20050349A MD3099G2 (ro) 2005-11-29 2005-11-29 Procedeu de obţinere a hialuronatului de sodiu, acidului hialuronic şi complexului acid hialuronic-proteină

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
MDA20050349A MD3099G2 (ro) 2005-11-29 2005-11-29 Procedeu de obţinere a hialuronatului de sodiu, acidului hialuronic şi complexului acid hialuronic-proteină

Publications (2)

Publication Number Publication Date
MD3099F1 true MD3099F1 (ro) 2006-07-31
MD3099G2 MD3099G2 (ro) 2007-02-28

Family

ID=36808911

Family Applications (1)

Application Number Title Priority Date Filing Date
MDA20050349A MD3099G2 (ro) 2005-11-29 2005-11-29 Procedeu de obţinere a hialuronatului de sodiu, acidului hialuronic şi complexului acid hialuronic-proteină

Country Status (1)

Country Link
MD (1) MD3099G2 (ro)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4141973A (en) * 1975-10-17 1979-02-27 Biotrics, Inc. Ultrapure hyaluronic acid and the use thereof
RU2055079C1 (ru) * 1992-02-04 1996-02-27 Научно-производственное акционерное общество "Техкон" Способ получения препарата гиалуроновой кислоты
RU2074196C1 (ru) * 1993-08-23 1997-02-27 Научно-производственная фирма "Нарт" Способ получения гиалуроновой кислоты
RU2115662C1 (ru) * 1997-07-21 1998-07-20 Самойленко Игорь Иннокентьевич Способ получения гиалуроновой кислоты
MD1617G2 (ro) * 2000-03-28 2001-08-31 Государственный Медицинский И Фармацевтический Университет "Nicolae Testemitanu" Республики Молдова Procedeu de obţinere a acidului hialuronic

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Publication number Publication date
MD3099G2 (ro) 2007-02-28

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Legal Events

Date Code Title Description
FG4A Patent for invention issued
KA4A Patent for invention lapsed due to non-payment of fees (with right of restoration)
MM4A Patent for invention definitely lapsed due to non-payment of fees