Aida Maaz

10 Questions 17 Answers 0 Followers

Questions related from Aida Maaz

PLGA nanoparticles Freeze drying, what is the best?

Hi Colleagues, Before digging into the literature and trying different approaches I want to ask the experts in here! Regarding the freeze-drying process for PLGA NPs stabilized with different...

30 November 2020 4,419 4 View

PEG-PLGA nanoparticles?

Hello everyone I have a typical question. I am trying to add PEG 5K as a surfactant alongside PVP K25 to make PLGA NPs. I can't understand why when I am trying to wash the particles...

19 November 2020 9,097 1 View

How could I know and control the concentration of Au Nanoparticles suspension as 10% of the expected Au NPs are often lost from washing process?

For seed mediated synthesis of gold nano-crystals with different shapes and sizes. I need to know the exact amount of Au seeds being used for the preparation and which is crucial to the final...

02 February 2019 1,913 2 View

How to prepare paracetamol 120mg/5mL oral suspension for children?

Hello.. I need referenced formulation for preparing paracetamol 120mg/5mL oral suspension with clear manufacturing steps..because I have trouble with it, since the active ingredient is...

25 May 2016 6,915 3 View

How can I calculate poly dispersity index (PdI) from DLS data?

I need to know the equation used for pdI calculation and make sure if pdI equals the square of the standard deviation / mean diameter is applicable..

31 December 2015 2,653 7 View

The encapsulation efficiency of nano-precipitation method (easy method) for my drug is zero, is it possible?

The supernatant equals the theoretical total with nanaoprecipitation method for preparation gatifloxacin nanoparticles with this formula. The organic phase: aceton 5ml +PCL 200mg the aqueous...

29 September 2014 6,529 3 View

Can someone send me a proven formula for microparticles preparation by single emulsification w/o or complex coacervation to be optimized?

I hardly tried with w/o/w microparticles preparation method for gatifloxcin ocular delivery but it didn't work. So I have to test something else to reach the suitable size for ocular delivery with...

05 September 2014 2,176 6 View

Is it possible for the pH of aqueous phase to affect the poly caprolactone polymer during nanoparticles preparation?

I noticed that Zeta Potential value was increased in alkaline aqueous phase, when I prepared Nano formula with PCL poly caprolactone polymer by nano-precipitation method

01 September 2014 7,842 6 View

In microparticles preparation, what are the factors that affect hydrophilic drug's diffusion from inner to outer aqueous phase in w/o/w method?

I am really interested in double emulsification method in microparticles preparation which is suitable for hydrophilic drugs, but I am having difficulties in encapsulating my relatively...

30 August 2014 7,415 8 View

Microparticles preparation with double emulsification w/o/w methods, What are the basic principles for its success?

I am currently working in research entitled: Development and Quality Control of a Sustained Release Ophthalmic Pharmaceutical Product Using Micro / In Situ Gelling for Gatifloxacin drug... and...

27 August 2014 6,767 7 View