/sci/ - Science & Math

not trolling and its not hw or anything, im just doing a lab report, but i have a dumb question

if my calculated protein concentration in 1 mL of extract from a food sample is 11.2 mg/mL

how do i calculate the protein as a percentage of a 5g sample of the same food item? like what info do i need?

heres what i did:

took 5 g of soybeans, ground them to uniform powder, dried them in a moisture balance, defatted them with hexane extraction, then solubilized proteins with water and NaOH, added acid and ppt to isoelectric pt, centrifuge, collect protein, solubilize again, and take 1 mL of this solution, dilute to 5mL and do Biuret method, obtain absorbance, obtain concentration using standard curve (previously developed)

how do i go back to determining protein content as a percentage of the entire sample? im literally drawing a blank right now

>>7538026
everytime i see something diferent added to that pic

chemfag here

just gonna leave this garbage here, dont mind me: http://chemistry.about.com/od/chemists/fl/Reasons-To-Date-a-Chemist.htm

>>7136434
Synthetic Biology.