L-Deoxyalliin-L-Deoxyalliin

左旋茶氨酸 L-theanine

左旋茶氨酸 L-theanine 即谷酰基乙胺。是从茶叶中发现的（ Y． Saka-to， 1950）。与谷氨酸同样机制合成。  

L-DOPA (L-3,4-Dihydroxyphenylalanine)

The nonprotein amino acid, 3,4-dihydroxyphenylalanine (L -DOPA) (Fig. 1) is present in high concentrations (about 3–6%) in Mucuna spp. The in vitro addition of L -DOPA to the red blood cells from individuals deficient in glucose 6-phosphate

L-Mimosine (-(3-Hydroxy-4-Pyridone-1-yl)-L-Alanine)

L -mimosine is a nonprotein amino acid. Despite the consideration of Leucaena leucocephala as a promising alternate source of protein for fodder, the presence of mimosine to the extent of 2% to 10% dry matter in the leaf and 2% to 5% dry