Maybe the following papers will help you:

Hi

I hope the attached paper help you

thanks

Dear Md Kawsar Khan,

I suggest you “Kjeldahl method” for total protein content determination and “Soxhlet method” for fat content determination.

For details of the methods, you can go through the the attached link and paper.

http://discoverfoodtech.com/protein-estimation-by-kjeldahl-method/

Hello!

After vigorous washing by tap water followed by freeze drying and grinding into fine powder, you can extract crude protein and lipid by Kjeldahl and Soxhlet methods, respectively, from insects. There are plenty of papers for your reference in internet.

I suggest you “Kjeldahl method” for total protein content determination and “Soxhlet method” for fat content determination.