Why the obtained results of antioxidant activity measured by DPPH and ORAC are very similar and vice versa of ABTS?

More Ibrahim Khalifa's questions See All

Ask about the most moderation directions in natural components extraction and identification ?

I want to update my background about isolation of bioactive components ways from plants sources. So if you have any advice or something else, tell me please.

01 January 1970 1,307 3 View

Fingerprint analysis, what about their advantage in chromatography analysis, and what does it mean?

more information, please!!

01 January 1970 488 3 View

What is the relation between hyphal extension inhibition and mycelia yield assay for antifungal determination?

What is the relation between them, and if you know about a paper in this point, please could you recommend it to me me for any fungal strains?

01 January 1970 7,314 3 View

please can you help me for obtained this methods (AACC Method 56-10 ) (AWRC)

(AWRC) in baking products

01 January 1970 5,789 0 View

What about the 3T3-L1 cells and in vivo "animal" studies?

Please give me your suggestions and opinions about the major difference between both of them, and what is the best method and mostly moderately?

01 January 1970 507 0 View

What is the best software for Box-Behnken experimental design?

Please anyone support me with the best software and the free one to design more than three factor experiment.

01 January 1970 1,864 3 View

What different between DPPH and ABTS assays when it comes to AOA determination?

01 January 1970 1,992 4 View

How can I estimate the soluble dietary fiber and insoluble dietary fiber in flour?

Dietary fiber.

01 January 1970 1,955 5 View

Phytochemicals extraction methods, which is the best?

We can use a lot of methods to phytochemical extraction from different sources, Which is the best? Can any one provide me the suitable answer from your experiments?

01 January 1970 941 12 View

Is the fluorescence of protein related with its solubility or no, and how the solubility affect its fluorescence intensity?

For experts, could u inform me the relationship between the solubility and fluorescence intensity for a protein solution. Thanks in advance....

01 January 1970 1,443 0 View

How can I calculate IC50 in DPPH test by using graph pad prism software?

How can I calculate IC50 in the DPPH test using graph pad prism software? or suggest a manual method and other software to calculate the IC50 value.

06 August 2024 8,848 3 View

How does one derive the standard deviation of a scale?

Dear all, I am working on analyzing data from a survey on student satisfaction. The survey contains items with a 7-point Likert response format that produce 12 scales related to different areas...

05 August 2024 2,141 4 View

Why results of ROS flurescence are negative as there was no bacteria within?

Hello. I am working on ROS production of two systems: system A is cerium oxide and hydrogen peroxide, system B is cerium oxide nanoparticle, hydrogen peroxide and potassium bromide. I did some...

04 August 2024 5,974 3 View

In WECS : Gain values for conversion of PMSM rotor speed(rad/s) to p.u. input to wind turbine and Torque(pu) of WT to input of PMSM-Torque (Nm) ?

I am working on developing a MATLAB Simulink model of Wind turbine with PMSG followed by MPPT Boost converter. I have gone through so many literature and videos but I am not finding clear solution...

03 August 2024 888 1 View

Does the gender of plants affect in the level of DPPH?

I have conducted research on the genus Salix, ad my results show that gender has a direct impact on the DPPH. Has anyone else obtained similar results or do you know of any articles that confirm this?

27 July 2024 5,144 1 View

How can one determine the conversion factor for a radiolabeled substrate to a radiolabeled product using slopes from linear regression equation?

I am preparing a radiolabeled product using a radiolabeled substrate. I have the cpm values for different dilutions of both my known substrate and unknown product ? How can one determine the...

27 July 2024 3,604 1 View

Why specific capacitance is not proportional with the specific surface area?

Dear researchers, Why specific capacitance is not proportional to the specific surface area? I have material A with a surface area higher than material B, but material B is showing little bit...

26 July 2024 9,156 2 View

How can I calculate the SOD enzymatic activities using the spectrophotometer method?

I have to quantify the enzymatic activities of SOD in plants using a method that employs hypoxanthine-xanthine oxidase to create O2. The colorimetric reaction was performed by combining...

23 July 2024 8,492 3 View

Can I use CCCP instead of H₂O₂ as a positive control for ROS measurement through flow cytometry?

I am giving starvation stress to the soil amoeba (Dictyostelium discoideum) cells in my study groups and using NAC as a negative control. I am using DHE for ROS measurement.

20 July 2024 6,354 0 View

Is there a method that I can measure alcohol dehydrogenase activity using NAD+ in enzyme extraction from plants?

17 July 2024 935 1 View