Ejection liquid, ejection method, method of making droplets...

C - Chemistry – Metallurgy – 07 – K

Patent

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Details

C07K 1/113 (2006.01) A61K 9/72 (2006.01) A61K 38/00 (2006.01) C07K 1/02 (2006.01) C07K 14/00 (2006.01) C07K 14/47 (2006.01) C40B 50/14 (2006.01) C40B 60/14 (2006.01) A61M 15/00 (2006.01)

Patent

CA 2603016

The present invention provides a liquid composition, as an ejection liquid used for stably ejecting liquid droplets, including at least one kind of a protein and a peptide, and a compound having a betaine skeleton by application of thermal energy to the liquid; a method of making droplets form the liquid; and an ejection method and an ejection device suitable for utilizing protein liquid droplets. By adding a compound having a betaine skeleton to an aqueous solution of at least one kind of a protein and a peptide, the liquid composition is improved in stability for ejection by application of thermal energy. Further, a surfactant may be further added to the liquid composition containing the compound having a betaine skeleton, and in this case the effect of stable ejection can be obtained.

La présente invention concerne une composition liquide, utilisée comme liquide d'éjection pour projeter des gouttelettes liquides de façon stable, y compris au moins un genre de protéine et un peptide, et un composé ayant un squelette de bétaïne, par application d'énergie thermique au liquide ; une méthode pour produire des gouttelettes à partir du liquide ; et une méthode d~éjection et un appareil d'éjection appropriés pour utilisation de gouttelettes de liquide protéique. En ajoutant un composé ayant un squelette de bétaïne à une solution aqueuse d'au moins un genre de protéine et un peptide, la composition liquide est rendue plus stable pour une éjection par application d'énergie thermique. En outre, un tensio-actif peut être encore ajouté à la composition liquide contenant le composé à squelette de bétaïne, et dans ce cas une éjection stable peut être obtenue.

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