Table 6. The content of free amino acids in various parts of Hovenia dulcis Thunbergii

Amino acids (mg/100 g)	Hovenia dulcis parts
Amino acids (mg/100 g)	Fruit	Branch	Leaf
Aspartic acid	7.55±1.54^4)b5)	15.79±2.59^b	321.58±13.18^a
Serine	8.54±2.31^b	2.39±0.64^b	126.92±12.96^a
Glutamic acid	9.65±1.93^b	2.68±0.57^b	510.34±18.62^a
Glycine	2.34±1.19^b	-	185.69±17.23^a
Histidine	-⁶⁾	-	93.85±8.66
Arginine	9.27±2.27^b	37.07±3.88^b	228.96±10.73^a
Threonine	1.64±0.45^b		134.79±15.29^a
Alanine	13.85±3.79^b	6.66±1.06^b	274.23±21.78^a
Proline	115.92±10.27^b	114.05±9.65^b	359.71±26.49^a
Tyrosine	2.01±0.59^b	-	132.58±16.67^a
Cystine	0.58±0.12^b	1.09±0.11^b	62.38±8.42^a
Valine	2.79±0.21^b	-	207.27±19.15^a
Methionine	-	-	67.41±10.02
Lysine	-	-	172.32±17.55
Isoleucine	17.02±3.29^b	0.45±0.09^c	178.49±13.24^a
Leucine	3.34±0.96^b	0.95±0.22^b	367.84±20.84^a
Phenylalanine	2.21±0.76^b	0.74±0.25^b	289.74±24.71^a
TAA¹⁾	196.11±2.95	180.78±1.29	3,424.36±11.10
EAA²⁾	26.99±1.27	2.13±1.08	1,511.71±9.11
EAA/TAA(%)³⁾	13.76	1.18	40.70

TAA, total amino acid.
EAA, essential amino acid (Thr+Val+Mct+Ile+Leu+His+Lys).
EAA/TAA (%), essential amino acid/total amino acid.
All values are mean±SD (n=3).
Means with different superscript letters in the same row are significantly different by Duncan’s multiple range test (p⟨0.05). a⟩b⟩c.
-, trace.