Joana P. A. Ferreira

4 Questions 8 Answers 0 Followers

Questions related from Joana P. A. Ferreira

Opinion on Journal Food Chemistry Advances?

What do you think about the Journal Food Chemistry Advances? Does it worth publishing in there?

25 July 2023 8,114 5 View

Best GC-MS columns for polyphenols?

I have some columns for my Thermo Scientific GC-MS: 1) DB-WAX 2) DB-1 c) DB-17HT d) VF-1MS e) TR-FAME f) TG-5MS g) TG-WAXMS A In my opinion, for polyphenols as flavonoid (and their glicosides)...

02 April 2022 7,952 3 View

I need to prepare a stock solution of 25U?

I need to prepare a stock solution of 25U from an enzyme and the bottle I bought says that the enzyme is in 1U/mg. I am newin this field of research... I have worked only once with enzymes but I...

14 November 2021 5,484 3 View

How do I separate a complex mixture of phenolics in a Quercus sample?

I have a complex mixture of phenolics, flavonoids and tannins from a methanol extract of Q suber. I did HPLC/UV in a C18 column using MeOH/Water/formic acid gradients and i don´t see any peak. It...

13 May 2015 5,261 7 View