Table 4. Protein quality of defatted rice bran extract powders (freeze-dried)

	Defatted rice bran extract powders
	C1)	A	E	AE
Amino acid score	0.64±0.002)d3)	0.70±0.00c	0.86±0.01b	0.94±0.00a
First limiting amino acid	L-leucine	L-isoleucine	L-valine	L-tryptophan
In vitro protein digestibility (%)	83.40±0.10b	83.73±0.31b	90.23±0.21a	90.67±0.32a
PDCAAS4)	0.54±0.01d	0.59±0.00c	0.78±0.01b	0.86±0.01a

Extracted powders of defatted rice bran with water (C), by auto-clave (A), by enzymatic hydrolysis (E), and by auto-clave and enzymatic hydrolysis (AE).
Values are mean±SD (n=3).
^a-dMeans in the same row with different letters are significantly different at p<0.05 by Duncan’s multiple range test.
PDCAAS, protein digestibility corrected amino acid score.