Why Can’t You Digest Grass?

You’ve probably seen cows enjoying a nice mouthful of grass, but why can’t we do the same?

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Sources:

Turning Waste Into Food: Cellulose Digestion


http://www.fda.gov/AnimalVeterinary/ResourcesforYou/AnimalHealthLiteracy/ucm255500.htm
http://science.jrank.org/pages/1335/Cellulose-Cellulose-digestion.html
https://www.britannica.com/animal/ruminant
https://www.mun.ca/biology/scarr/Ruminant_Digestion.html

Cellulose:
https://www.britannica.com/science/cellulose
http://antoine.frostburg.edu/chem/senese/101/consumer/faq/what-is-cellulose.shtml
http://chemistry.elmhurst.edu/vchembook/547cellulose.html

Hydrolysis/Fermentation Inside Rumen:
https://www.britannica.com/science/hydrolysis
http://bioenergycenter.org/besc/publications/wilson_microbial.pdf
http://web.mit.edu/pweigele/www/Towards%20a%20Personal%20Bioreactor/Readings_files/Anaerobic%20cellulose%20degredation.pdf
Carbohydrate Oxidation-Fermentation
http://www.publish.csiro.au/?act=view_file&file_id=SA0501041.pdf
http://www.eng.umd.edu/~nsw/ench485/lab4.htm
http://pubs.acs.org/doi/abs/10.1021/ja410291u?journalCode=jacsat
http://arbl.cvmbs.colostate.edu/hbooks/pathphys/digestion/herbivores/rum_absorb.html
http://mmbr.asm.org/content/66/3/506.full

Microbes in Humans:
https://www.researchgate.net/publication/248436704_Influence_of_particle_size_and_pH_on_anaerobic_degradation_of_cellulose_by_ruminal_microbes
http://www.innerbody.com/anatomy/digestive/large-intestine
http://www.livescience.com/52026-colon-large-intestine.html

Image Sources:
https://en.wikipedia.org/wiki/Cellulose#/media/File:Cellulose_spacefilling_model.jpg
https://en.wikipedia.org/wiki/Ruminant#/media/File:Abomasum_(PSF).png
https://en.wikipedia.org/wiki/Cellulase#/media/File:1NLRribbon.png
https://en.wikipedia.org/wiki/PH#/media/File:PHscalenolang.svg

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