How can i prepare a serial dilution from probiotic to be used in MTT assay?

16 February 2023 1 3K Report

how to make a serial dilution of a freeze dried powder from certain probiotic to undergo MTT assay?

Rana Elmahdy , would be good to provide a few more details, however, here is a general answer to your questions:

- Prepare a probiotic's initial concentration(s) in a culture medium. It will be a stock solution that you will use for serial dilution procedures to prepare desired different concentrations (dilutions) of probiotics.

- Serial dilution principle and the procedure is explained in the video tutorials below. You'll need to do calculations based on the required concentration(s), volumes, and dilution factor for your experimental setup.

https://www.youtube.com/watch?v=NXirIFfpKdg

https://www.youtube.com/watch?v=sjJSSuc3LfQ

https://www.youtube.com/watch?v=yYWFX4IXc5Y

The publications below might be helpful for your experiments:

Article Inhibitory Effects of Probiotic Lactobacillus on the Growth ...

http://dx.doi.org/10.1590/s2175-97902022e19400

Article The effects of probiotic Bacillus subtilis on the cytotoxici...

Article Probiotic potential and anticancer properties of Pediococcus...

Badges
Science topic

More Rana Elmahdy's questions See All

How to extract peaklists from mass spectrometry raw file and do mascot search for my protein in ncbi?

I have a raw file of tandem mass spectrometry (LC-MS/MS) data. I want do online protein databank search for my protein identification and its homology.

30 January 2021 3,081 3 View

How can i save multi medical images after some preprocessing in a file ?

i have multi x ray images after preprocessing on it , i saved them as a vector in file .dat but this file not accepted in next stage (convolution neural network ). how can i save all image in...

27 December 2020 1,369 4 View

What is microbiology and its types,scope?

the study of microorganisms is called microbiology Microbiology is the study of microscopic organisms, such as bacteria, viruses, archaea, fungi and protozoa. This discipline includes fundamental...

13 December 2020 8,287 6 View

How can one calculate Gibbs energy and entropy in ab initio molecules dynamics?

Hello, I've been investigating a bunch of monomers which spontaneously react in water to form a polymer. I would like to know how to calculate the thermodynamics of such a system. On the surface,...

18 November 2020 5,595 3 View

How to make a solution of resazurin powder ???

I want to test chitosan nanoparticles as antimicrobial against pseudomonas How to use resazurin microtitre assay????

08 November 2020 9,533 2 View

Please suggest me EI compendex conferences with good acceptance rate?

I want to publish a paper at the EI-Compendex conference, please suggest a conference with a high acceptance rate. My field of research is IoT security and cryptography analysis.

19 October 2020 5,365 3 View

Why COS 7 Cells change its morphology to round shape (rounded nucleus and peri nucleus cytoplasm) after Transfection?

I have transfected COS 7cells to express Protein-GFP conjugate, transfection rate was very low (20-30 %) , but the cell morphology changed, many of the cells appear round, (nucleus round too)...

15 September 2020 5,324 3 View

How to separate mixture of two organic compounds using size exclusion chromatography?

My organic compounds have a molecular weight in the range of 2500g/mol and other is 1066.22 g/mol. aThe TLC results show three spots. But the main problem with my compounds are acid sensitivity of...

20 August 2020 6,119 3 View

Dear All. Can normal RNA extraction kit be used for RNA extraction from cell-free medium like culture supernatant, VTM, plasma, etc.?

I am asking specifically for RNA extraction for VTM containing COVID-19 SARS-CoV-2 virus particles. Will the extraction kit make difference in total or specific (viral) RNA yield? There are many...

16 August 2020 8,385 2 View

Should outlier analysis be done before PCA while trying to perform step-wise Regression? Also how to deal with outliers?

Currently I am working on a project wherein I need to predict the estimated new Selling price of IPL players based on their current base price and previous years' performance & sold price. I'm...

05 August 2020 4,254 6 View

RIA. How to measure?

When you use RIA, with a control the unknown sample with antibodies, you bare in mind the binding sites of the antibodies. However you still need to measure labelled antigen (radioactive) and not...

28 February 2021 2,133 3 View

What is the most suitable resuspension buffer for TCA/acetone precipitated protein?

I need to extract protein from fermented carbon sources for Bradford assay. Most researchers experiencing insolubility of pellet in resuspension buffer. Please assist me to select most suitable...

26 February 2021 7,129 3 View

EMSA troubleshooting. Protein-DNA complex not migrating, cold probe lane with multiple bands. Can anyone help?

I'm running an EMSA to show the DNA binding activity of recombinant proteins versus the Wild type. Previous assays run by my research group using a different test system show the protein-DNA...

24 February 2021 8,325 1 View

What is the proper in vitro culturing method to get information about the activation of innate immune cells by VLPs?

Dear All, I am interested in studying the response of immune cells against virus-like particles (VLPs). I used the PBMC in vitro assay and treat it with the VLP using PHA as a positive ctrl while...

16 February 2021 1,337 2 View

Why does flow deformation occur at the test line and control line on nitrocellulose membranes (LFIA)?

I use 1% BSA in 10 mM phosphate buffer (pH 7.4) solution when striping my nitrocellulose membranes with antigens and antibodies. However, I always observe deformed flow when my sample or running...

16 February 2021 4,224 3 View

Can the viability assays (ex: MTT/CCK-8) measure cell proliferation? or are they solely viability assays?

I want to conduct a proliferation assay to test a chemotherapy combination on a cancer cell line. At first, I thought about the MTT assay. But now, all sources are saying that these do not measure...

14 February 2021 3,142 7 View

GST assay in microplate?

I'd like to know if anyone can provide me with a protocol for traditional GST enzymatic assay (with GSH and CDNB as substrates) in a 96 well microplate, for cell line and/or C.elegans...

11 February 2021 1,328 3 View

What lysis buffer is compatible with Bradford assay?

Hello! I am planning to use Bradford assay to measure protein content in PBMCs lysates. The problem is that Bradford assay doesn't seem to be compatible with Tris-based buffers or SDS. Are there...

10 February 2021 1,797 5 View

For PC-3 cell line. How long before irradiation do I have to synchronize my cells to G0/G1?

I am trying to do a clonogenic assay for PC-3 after irradiation. I have to synchronize my cells by serum starvation but there's a optimal time I have to do that before irradiation. been looking in...

09 February 2021 9,480 1 View

What is best technique to quantify necrotic cell death of specific cell populations?

I currently using FACS (Aurora Cytek) to quantify necrotic Gr1+ cell death from the spleens of immune competent mice. I target Gr1+ cells in the spleens of tumor-bearing mice using a photodynamic...

08 February 2021 733 6 View