Carolynna Buyau James

4 Questions 13 Answers 0 Followers

Questions related from Carolynna Buyau James

Why my fermented extracts shows low DPPH activity?

I did solid state fermentation for 7 days. I used A. niger, Penicillium sp. and T. harzianum. 1 flask without fungus as control. It seems like my control (unfermented) shows higher DPPH activity....

23 August 2018 601 10 View

I am doing ABTS, can I use Ascorbic Acid as my standard instead of Trolox?

This is because I don't have any Trolox in the lab.

31 July 2018 7,333 7 View

Why can't i get a stable reading for my ascorbic acid standard?

The DPPH i used was 0.5mM. I dissolved my ascorbic acid in methanol to get 2mg/mL. I'm doing half serial dilutions and i do dilution using methanol. My DPPH i dissolved it in Methanol. I'm in the...

25 June 2018 5,968 5 View

I am doing DPPH for my methanol extracts. My extracts can bleached 0.2 mM DPPH at 1mg/ml. How should i do my ascorbic acid standard?

When i used 0.2 mM DPPH, my ascorbic acid readings show no different. Difficult for me to plot the graph.

18 June 2018 5,605 7 View