Nurul Ain Natasha

6 Questions 1 Answers 0 Followers

Questions related from Nurul Ain Natasha

Extraction solvent of saponins from oily seeds?

Hi all I am currently embarking a project to determine saponin content in oily seeds, I have been looking at various literature methodology and according to available data in the literature,...

16 May 2023 1,226 1 View

Theory behind the Liebermann-Burchard assay for saponin determination?

Hi all I am interested to determine the saponin content from oily seeds and have found a few methodology from papers that uses Liebermann-Burchard assay (via UV-Vis spectrophotometer), however I...

16 May 2023 4,830 0 View

Why is it necessary to vortex and incubate in dark the sample and DPPH solution and other DPPH questions?

Hi all, In the determination of Antioxidant capacity of fruit samples, I used DPPH assay and have a few questions regarding the DPPH assay 1) why is it necessary to vortex and incubate in dark...

31 August 2020 559 3 View

What is the difference between determining total phenolic content and antioxidant capacity of fruits?

Hi all, I understand that quantification of total phenolic content (TPC) refers to all the phenolic compounds present in the sample of interest, however, the folin-ciocalteu assay does this by a...

28 August 2020 141 5 View

Why are UV (colorimetric methods) used in determining Total phenolic content/Antioxidant activity of fruits?

Why are UV (colorimetric) spectrophotometric methods used in determining Total phenolic content/Antioxidant activity of fruits? Is HPLC possible? what are the differences these methods?

26 August 2020 6,801 15 View

What is the equation to explain how one possible organic side product is formed in the synthesis of 1-bromobutane?

And show the chemical properties window of this side product. Explain how this product can be separated from the desired product. I have already identified that the possible organic side products...

30 December 2019 6,451 4 View