Table 6
Free amino acids of Opuntia spp. fruits
(unit: mg%)

	O. ficus-indica	O. humifusa
Asparticacid	24.01±0.28^1)a2)	31.68±2.78^b
Glutamicacid	71.21±0.62^b	653.00±58.81^a
Asparagine	6.63±0.11^a	2.05±0.18^b
Serine	22.49±0.11^a	15.58±1.23^b
Glutamine	31.16±0.04^a	8.83±0.54^b
Histidine	5.30±0.15^a	1.50±0.26^b
Glycine	6.19±0.05^a	0.98±0.03^b
Threonine	4.63±0.10^a	2.20±0.26^b
Arginine	36.05±0.23^a	2.31±0.11^b
Alanine	12.97±0.13^a	6.98±0.40^b
Taurine	15.32±0.04	-
γ-aminobutyricacid	25.99±0.00^a	10.71±0.93^b
Tyrosine	179.50±0.05^a	1.19±0.30^b
Valine	9.72±0.19^a	8.07±0.17^b
Methionine	5.35±0.13^a	0.83±0.09^b
Tryptophane	18.23±0.22^a	4.11±0.24^b
Phenylalanine	14.91±0.08^a	1.99±0.01^b
Isoleucine	9.10±0.08	8.01±0.40
Leucine	10.46±0.07^a	2.66±0.26^b
Lysine	6.38±2.27^b	1.07±0.05^b
Proline	79.58±3.04^a	34.17±1.88^b
TAA³⁾	595.18	797.92
EAA⁴⁾	78.78	28.94
EAA/TAA(%)	13.24	3.63

¹⁾All results are expressed as mean±SD for three replicates.
²⁾Different superscripts in the same row are significantly different at p<0.05 by Duncan’s multiple range test.
³⁾Total amino acid.
⁴⁾Total essential amino acid.