L-Phenylalanine yog ib qho tseem ceeb amino acid thiab nws yog tus precursor ntawm cov amino acid tyrosine.Lub cev tsis tuaj yeem tsim phenylalanie tab sis nws xav tau phenylalanie los tsim cov protein.Yog li, tib neeg xav tau phenylalanie los ntawm cov khoom noj.3 hom phenylalanie muaj nyob rau hauv qhov: D-phenylalanine, L-phenylalanine, thiab DL-phenylalanine.Ntawm peb daim ntawv no, L-phenylalanine yog daim ntawv ntuj pom muaj nyob rau hauv feem ntau cov khoom noj uas muaj cov proteins, xws li nqaij nyug, nqaij qaib, nqaij npuas, ntses, mis nyuj, yogurt, qe, cheese, soy khoom, thiab qee yam txiv ntseej thiab noob.