How many methods are there to identify the lignin contents in the lignocellulosic materials?

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Neelu Raina

You can try this acid hydrolysis method by NREL

Article Compositional Analysis of Lignocellulosic Feedstocks. 1. Rev...

Keep in view that the moisture content of the biomass has a profound effect on the results.

This is also a good read

Dang T. Nguyen

Dear Dr. Neelu Raina,

Thanks for your valuable share.

Best regards,

Boredi Silas Chidi

Dang T. Nguyen Neelu Raina . A facile spectroscopic method, CASA (Cysteine–Assisted Sulfuric Acid) method, was recently developed to quantify the lignin content of lignocellulosic biomass.

Check Article A facile spectroscopic method for measuring lignin content i...

Thanks Dang sir and Boredi sir for your reply.

Dear Dr. Boredi Silas Chidi,

The article is really valuable. Thanks for your outstanding response.

Best regards.

Nada Farhan Kadhim

Interested

Ahmed Muayad Younus Al-Zehhawi

Interested 2

Doufnoune RACHIDA Rachida

Dear Dang T. Nguyen,

Please check the following documents.

With my best regards

Dear Prof. Dr. Nada, Dr. Ahmed Muayad Younus, Prof. Dr. Doufnoune Rachida,

So great. Thanks for your valuable contribution in this discussion.

Chuck A Arize

Commonly-used methods for the quantitative analysis of lignin are the Klason and the AcBr methods. Klason is a gravimetric method and only measures insoluble material after hydrolysis with 72% H2SO4. It is often combined with spectrophotometric determination of dissolved lignin [5].

Qualitative analyses of the lignin extract using UV-vis spectroscopy. Inlet shows the quantitative analysis of the powdered lignin extract [1] The most commonly-used method for quantitative analysis of lignin is the Klason method. It is a gravimetric method to measure insoluble material in plant cell wall after hydrolysis with 72% H 2 SO 4.

Kiprotich Kiptum

Also check on this paper.

https://pubs.rsc.org/en/content/articlelanding/2021/gc/d1gc01507a