Soya e fana ka tlatsetso ea bohlokoa lijong tsa vegan hobane soya e na le protheine e ngata haholo. E lokiselitsoe ho jeoa, protheine e ka ba karolo ea 9 lekholong. Protheine eo e nang le eona e ka monngoa habonolo le ho sebelisoa ke ’mele. Kaha li-vegan ha li je protheine e tsoang nama kapa lihlahisoa tsa lebese, ho bohlokoa ho fumana protheine ho tsoa mehloling ea limela ha u latela lijo tsa vegan.
'Meleng oa motho, liprotheine li na le boikarabelo, har'a lintho tse ling, bakeng sa ho haha le ho nchafatsa metsoako ea' mele ea liprotheine. Tsena li kenyelletsa karolo e kholo ea 'mele oa motho joalo ka mesifa, letlalo, moriri, litho, lisele tsa mali, kapa lihormone.
Ligrama tse 100 tsa soya e omisitsoeng li na le ligrama tse 35 tsa protheine, e lokiselitsoeng kapa e phehiloeng e ntse e le ligrama tse 15. Tofu e entsoeng ka soya le e halikiloeng e na le ligrama tse 16 tsa protheine. Ka lebese la soya, protheine e tlase haholo ho karolo ea 3 lekholong feela.