15 Questions 30 Answers 0 Followers
Questions related from Nurul Ashikin Abdul Karim
How to know the wavelength that i should use to measure the optical rotation? What is the difference between optical rotation and optical ellipticity? thanks
03 March 2016 3,167 7 View
My compound only dissolve in water (glucomoringin). what is the best solvent to dissolve it to run NMR
02 February 2016 7,497 2 View
I'm extracting glucomoringin from plant. when i read in journal, most stated that it must be activated with enzyme before it can be use for any biactivities.The purpose is to hydrolyze the gmg to...
11 November 2015 7,655 4 View
I'd done MTT assay on a cancer cell line to study cytotoxicity of crude plant extracts. The incubation period for the assay were 24, 48 and 72 hours. However, i found that some of the ic 50...
09 September 2015 8,890 4 View
Prostate cancer cell lines in local university. I really need to find those cell lines. thanks
08 August 2015 6,359 3 View
I had purify glucosinolates from seed of plant. But when i do NMR, the result showed impurities in 0-2.5 ppm. How can i solved this issue?
06 June 2015 1,810 5 View
My compound is a glucosinolate. It is easily dissolved in water, but I found out that it isnt dissolved well in organic solvent that i tried such as methanol, ethanol, acetone and hexane I need...
04 April 2015 5,094 6 View
i had done tlc for my crude extract as it has been suggested by sv to check the compound and solvent system. i had found only 1 spot for my crude and the best solvent system. my desired pure...
03 March 2015 9,046 17 View
Why do people spending a lot of money for buying orchid? What are the characteristics of beautiful or characteristics of marketable orchids?
03 March 2014 5,608 1 View
We tried to culture pineapple n36 for some months, but still have fungus contamination. Any suggestion for sterilization techniques?
07 July 2013 8,415 5 View
I have to use the EDC chemical for my project. I have never used it before, I 'd read on the label for storage condition which stated that it can only be freshly use. Does it mean that I can't...
05 May 2013 4,003 3 View
Has anyone had experience doing disk diffusion and minimal inhibitory tests for plant extracts? The results of my MIC test contradict the disk diffusion test results. In MIC, it shows positive...
04 April 2013 3,862 21 View
In my case, my parameter is the production of secondary metabolite by the callus. And is it valid if I extract the callli after 4 weeks of monitoring by one time subculturing?
04 April 2013 7,720 3 View
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04 April 2013 259 4 View
What type of polyphenols are usually involved?
01 January 2013 9,349 0 View
