Afifah Supardy

6 Questions 9 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.

08 August 2018 4,278 3 View

What is the best step to process the biofilm on cover slips for the Scanning Electron Microscope?

I have developed biofilm from marine bacteria on the glass coverslips and in the process to view it under the scanning electron microscope. However, from the readings of some studies, I want to...

02 February 2016 1,275 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...

01 January 2016 6,083 5 View

What is the correct definition of marine fouling bacteria?

In most antifouling studies, the fouling bacteria was first isolated from seawater or biofilm that formed on fouled surfaces. However, how do we know that which is isolated are really contributing...

10 October 2013 4,336 4 View

What are the reasons for irreproducible results in cross-streak assay?

I did a cross-streak assay to test the antibacterial activity of the marine epiphytic bacteria against some fouling bacteria. The tests were done in two separate batches (different time but...

01 January 1970 4,929 0 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 4,898 3 View