Can someone throw some light on the analysis of sodium salts of nitrites and nitrates added as preservatives in meat by HPLC ?

More Dr.Aneez Ahamad, P.Y's questions See All

How are FTIR spectrometer and Q-TOF LC/MS differentially capable in identifying unknown compounds ?

01 February 2016 8,139 2 View

Does anyone work with biogenic amines ?

When u extract histamine in fish and analyse by UPLC, u find lot of orher peaks other than histamine. Could someone list lhe other metabolites and is there a way of identifying it.

08 September 2015 6,384 6 View

What precautions should you take when you extract essential oil from rose or flower water?

The essential oil content in the rose or flower water will determine the quality of the product. Has anyone has developed a specific method.

02 March 2015 7,224 2 View

What is the major diference between C-3 and C-4 plants?

Why is it that honey requires C-3 plant sugars?

01 February 2015 5,569 14 View

Is Histamine the major biogenic amine in fish?

When the fish is more putrified, I noticed a shift in the retention time of histamine

01 February 2015 5,110 1 View

Does anybody have the address of the supplier who provides CRM in Honey matrix?

This is for stable isotope analysis

11 December 2014 7,863 1 View

Is the separation of bioamines eluting along with histamine a difficult process in UHPLC?

As it is closely related species, in the spoilage fishes u find close retention times

11 December 2014 5,550 2 View

Which type of compound does lamda max of 218 indicate in a uv-vis spectrum of a partially purified compound through column and TLC?

A crude extract of fungal culture using EtOH was subjected to column and TLC and partially purified compound was obtained. UV vis spectrum of the compound/s has max absorbance at 218nm. The...

11 August 2024 9,801 2 View

Can you connect an HPLC to a Mass Spec only at a certain time point?

Can anyone explain this method? Especially the last statement where it says only at 1.5 to 2.5mins was the MS/MS connected to the UPLC. How is that possible, is it a feature in this specific...

11 August 2024 8,141 3 View

Basis set and input instruction to calculate HOMO and LUMO using Orca for Imidazolium based organic salts?

Hey there, As a synthetic chemist delving into theoretical calculations for my imidazolium-based organic molecules, I would greatly appreciate any guidance on the appropriate input instructions...

09 August 2024 5,444 7 View

GC-MS retention index prediticon?

Hello experts, Does anyone know any free software about retention index prediction ?

08 August 2024 7,403 2 View

Can I use a HisTRAP column for affinity chromatography?

I'm working on selecting antibodies against a recombinant protein that has a His-tag. My idea is to first bind the recombinant protein to a HisTRAP column and then use this column for an affinity...

07 August 2024 505 3 View

Separation of organic acids-HPLC?

Hello What should be done to separate and identify organic acids in HPC when their RetTime is the same?Like oxalic acid with Propanoic Acid.or acids that have a very close RetTime.

07 August 2024 8,782 3 View

Why is electronic energy 0.000 for liquid crystal compounds and is invariable with temperature in Guassian 09 software?

Are there any suggestions or insights you can provide to help address this problem

06 August 2024 1,443 2 View

RNA later for the preservation of RNA in fecal samples at room temperature for one day (37°C)?

I am planning to collect human fecal samples for metatranscriptomic analysis using MGI. These samples are from indigenous people living in a region with high temperatures. I will have access to a...

06 August 2024 1,367 3 View

How can we use mobile apps for improving students' academic performance?

Mobile apps can be a powerful tool for enhancing academic performance, how can we use mobile apps for improving academic performance

04 August 2024 9,492 0 View

Why is TLC not a form of partition chromatography?

Why is TLC not a form of partition chromatography and paper chromatography not a form of absorption chromatography?

03 August 2024 7,035 3 View