How can I separate hydrolysable tannins (gallotannins or ellagitannins) from procyanidins of plant extract?

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How can, granulometry or grain size data, be used in enrichment factor calculations?

As a stable element

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Is there anything faster than Xarray or Pandas out there?

Hello, dear RG community. Personally, I have found Xarray to be excruciatingly slow, especially for big datasets and nonstandard operations (like a custom filtering function). The only suggestion...

15 July 2024 4,705 2 View

O impacto da Gestão Estratégica de Marketing, na tomada de decisões empresariais?

o impacto da Gestão Estratégica de Marketing, na tomada de decisões empresariais?

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My hippocampal mouse primary neurons clump when I plate them on microfluidic devices for axonal isolation. Any tip?

Hi all, I am working on both primary hippocampal mouse neurons and i3Neurons to isolate axonal material. I plate them in microfluidic devices in house made (like any other you can find on the...

01 July 2024 8,070 0 View

How to reduce the material coming out of the torque rheometer?

A physical mix was in vitro evaluated on a torque rheometer. The composition was predominantly recycled polypropylene (PP), yet the melt flow index (MFI) was found to be excessively high....

25 June 2024 10,154 0 View

Can you use MTT assay for tissue samples?

Can you use the MTT assay of cell viability for tissue samples derived from rats e.g. liver, muscle, heart, brain, or is this method reserved for cultured cells? Thank you

29 May 2024 6,389 2 View

Problem when running Spin-Orbit Coupling using CASTEP. What is nlpot_prepare_precon_ks?

I am currently using CASTEP version 22.11, and I encounter the following error when running calculations with spin-orbit coupling: Error with dsytrf in nlpot_prepare_precon_ks Current trace...

19 May 2024 4,236 5 View

What are the features and best library to predict and clasify people?

Hello everyone, I am currently exploring several options to give the collected data the greatest value possible. I have demographic data on older people, where I perform various memory and mood...

02 May 2024 876 6 View

Do the bottom layers of the slab need to be fixed when we use DFPT or finite displacement methods to compute the phonon spectrum of a surface?

When using DFPT or the finite displacement (also known as the frozen phonon) method to compute surface phonon spectra, it is generally necessary to perform high-precision optimization on the slab...

22 April 2024 8,385 0 View

Is this formula to calculate LST is accurate?

Could you please provide me some authoritetic refers where this formula used if it accurate OR tell me why it is wrong and how to fix it? 1. TOA (L) = ML * Qcal + AL 2. BT = (K2 / (ln (K1 / L) +...

19 April 2024 8,924 0 View

How to identify the class of phytochemicals or plant secondary metabolites after GC-MS analysis and NIST library identification?

I have performed GC-MS analysis of Phytochemicals from a medicinal plants and also identified compound using NIST library. After NIST identification, I have a list of compounds. I am constructing...

12 June 2024 235 4 View

Crestomer on Plywood?

Normally unsaturated polyester or more in general radicalic bonding pastes doesn't adhere to marine plywood, due to the inhibition effect of formaldehyde and tannins. Crestomer 1152 of Scott...

22 April 2024 1,988 0 View

Is it possible that phenolic compounds other than flavonoids are detected in the total flavonoid assay?

Hi, I would like to know how much specific is the TFA. It could takes into account not only flavonoids but also other phenolics compounds, such as tannins for example?.

06 November 2023 5,610 3 View

How to Epon embed liver gor transmission electron microscopy?

Hi guys, I did an Epon embedding of mouse liver for trasmission electron microscopy, in order to see mitochondria cristae, but the images appear blurry and I cannot see the cristae properly (see...

21 August 2023 4,247 2 View

How to conduct tannin content assay by the vanillin/HCl method?

I am using fermented sorghum as my sample, I extracted the sample using MeoH. I facing problem my absorbance reading are not right, know that my samples are wet basis. I used catechin to do my...

16 August 2023 9,089 3 View

How to remove tannin from the crude extracts of plants except solid-phase extraction (SPE) cartridge filled with polyamide gel?

August Colleagues, Greetings! I want to remove tannin from the plant extracts. Literature study guided me to use SPE to remove tannin. However, I do not have SPE. Is there any other alternative...

27 July 2023 9,001 0 View

How can I make tannic acid and PVA solution ?

I am facing the problem of PVA getting coagulated upon addition of tannic acid.

09 May 2023 5,036 0 View

I am working on bacterial laccase by using a chemical guaiacol. Positive result are forming red brown clear zone. I couldn't get positive. help me ?

1. I got red brown colony but not red brown clear zone. Can we say that it is a positive result 2. Tannic positive results can not be a positive on Guaiacol. Why? 3. Can I autoclave guaiacol and...

21 April 2023 2,028 2 View

How to detect the compounds from the hptlc peak and rf value ?

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07 April 2023 644 0 View

How Extract tannin from plante waste?

Welcom dears... I want extraction tannin from plant waste and remove impurties ... What the best and semplest method to make this

28 January 2023 9,730 2 View

Prakash Shrestha Pradhan

Dear Ivanov,

The attached articles and its cross references may be helpful to you

Best Wishes,

Fatima Mohammed Hussen

Good refrences by Prakash thanks they are also useful for me

Ivan Ivanov

Thanks for the references dr. Pradhan

Debasis Chakrabarty

Please find an attached file.....I hope u can find your answer there.

Wishes

Sen Lin

dialysis

Sara Canas

Dear Dr. Ivanov,

Please see the attached articles.

Best regards,