12 Questions 17 Answers 0 Followers
Questions related from Li Yoke Ho
According to : https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3429087/For the solubility assay, the intestinal digests need to be centrifuged, to yield a supernatant and precipitate. The nutrients...
08 December 2016 509 2 View
Hi,Anyone doing ABTS antioxidant assay?*Attached picture show my samples+ABTS solution (After > 7 minute); Left is lower antioxidant content than right*So I heard ABTS Assay works from turning...
19 October 2016 3,173 9 View
Hi,So I encapsulated some oil. Any suggestions to check the oil oxidative stability besides extracting it (via soxhlet) and run peroxide test?There's very little encapsulated oil (around 1.0%...
15 October 2016 1,341 1 View
Just wondering. After mixing in equal amount and left in the dark for 16h. How long can the ABTS stock solution (1:1 ABTS+K2S2O8) be kept in the fridge?
14 October 2016 1,856 4 View
Using 2% w/v Gelatin A and Gum acacia, 0.5gm crystalline drug and 1ml 10% tween 80.h20 So I adjust to ph to 3.8 and subjecting it to ice bath to reduce the temperature to 15C. Repeat experiment...
22 July 2015 7,532 2 View
Hi, I am not pharmacy etc based background. My understanding of Encapsulation/Entrapment efficiency comes from papers/books.Direct and Indirect method?when to use which?Calculation?Method?If my...
19 July 2015 9,860 6 View
Hi, I am not from pharmacology background. But I would like to determine my sample aqueous solubility after spray-drying. I chance upon paper belowPaper:Solid Dispersions of α-Mangostin Improve...
19 July 2015 4,612 9 View
I just tried out the procedure based on this paper: http://www.ncbi.nlm.nih.gov/pubmed/9743913 Using 2% w/v Gelatin A and Gum acacia, 0.1% w/v crystalline drug and tween 80 So I adjust to ph 4 for...
08 August 2014 5,540 2 View
I came across this word "Solvent displacement" in journals. I Googled it. But there doesn't seem to be much explanation of the idea and method behind it. I just do not get how it works. Anyone...
03 June 2014 4,414 1 View
So I've just started looking at surfactants, emulsions etc. I've been looking at some journals on emulsion/dispersion for spray drying etc. and all, but without much success. Let's say I want to...
26 May 2014 6,772 13 View
I'm wondering if its possible to use Tween 20/80 as a carrier/solubilizer to dissolve a hydrophobic substance. So far, I tried heating either Tween to around 70C, and it manage to dissolve my...
15 March 2014 265 14 View
I am thinking of encapsulating a hydrophobic antioxidant (lets call it A) using a spray dryer. Since it is hydrophobic, i was thinking of dissolving A with a vegetable oil, maltodextrin as a wall...
11 February 2014 5,477 3 View
