Afifah Supardy

4 Questions 8 Answers 0 Followers

Questions related from Afifah Supardy

How does the bioautography assay of carotenoid (and its constituents) can be carried out to determine the bioactive compound/ spots?

Carotenoid is light sensitive and is easily disappear from TLC due to exposure to light and air.

30 August 2018 5,006 3 View

Does the size of cover slips is important to test the antimicrobial agent on the formation of biofilm?

Can we use different sizes (unstandardized) cover slips to grow the biofilm and test the effect of antimicrobial agents (different concentrations) on the formation of biofilm? The test is to...

17 January 2016 5,445 4 View

Does anyone have experienced antibiofilm test results with an extract that showed enhancement and inhibition in biofilm production?

In my antibiofilm test (quantification) using the 96-well plates and CV staining method, i found out that at lower extract concentrations, the production of biofilm was higher than the control...

02 November 2015 6,791 11 View

A molecular weight of a polyunsaturated fatty acid (C16H24O2) is 248.1763. However, the m/z given was 293.178. How to get the m/z?

The compound was identified with Q-TOF LC/MS, negative mode ESI. Does the m/z value is influenced by the COOH (carboxyl group) of the compound?

01 January 1970 5,668 2 View