Table 3 Amino acid content (g/100 g protein powder) and nutritional profile of AE-HPC and RMS-HPI.

From: Differences in hempseed protein separated from AOT reverse micelles and alkaline extraction–isoelectric precipitation

Amino acid

AE-HPC

RMS-HPI

Recommended pattern

(FAO/WHO, 2013)

Essential amino acids

Threonine

2.35 ± 0.01a

2.34 ± 0.08a

2.5

Valine

3.46 ± 0.05a

3.41 ± 0.08a

4.0

Methionine

1.36 ± 0.02a

1.91 ± 0.16b

2.3 (Methionine + Cysteine)

Isoleucine

2.82 ± 0.07a

2.82 ± 0.08a

3.0

Leucine

4.73 ± 0.08a

4.62 ± 0.08a

6.1

Phenylalanine

3.21 ± 0.05a

3.15 ± 0.02a

4.1 (Phenylalanine + Tyrosine)

Lysine

2.37 ± 0.06a

2.33 ± 0.24a

4.8

Histidine

2.14 ± 0.02a

2.30 ± 0.02b

1.6

Nonessential amino acids

Cysteine

1.86 ± 0.04a

2.45 ± 0.00b

 

Aspartic Acid

7.33 ± 0.07a

7.83 ± 0.02b

 

Serine

3.40 ± 0.13a

3.73 ± 0.06b

 

Glutamic acid

12.82 ± 0.24a

15.25 ± 0.20b

 

Proline

2.67 ± 0.01a

2.47 ± 0.02b

 

Glycine

2.85 ± 0.02a

3.25 ± 0.04b

 

Alanine

2.94 ± 0.05a

2.91 ± 0.01a

 

Tyrosine

2.43 ± 0.03a

2.71 ± 0.02b

 

Arginine

9.45 ± 0.24a

11.23 ± 0.04b

 

Nutritional profile

PER1

1.35 ± 0.04a

1.31 ± 0.04a

 

PER2

1.42 ± 0.03a

1.34 ± 0.03a

 

PER3

0.62 ± 0.05a

0.55 ± 0.10a

 

EAAI

130.15 ± 0.21a

139.38 ± 1.21b

 

p-BV

130.16 ± 0.23a

140.22 ± 0.49b

 

NI

111.93 ± 0.18a

131.63 ± 0.42b

 

AAS

Threonine

0.94 ± 0.01a

0.92 ± 0.03a

 

Valine

0.87 ± 0.01a

0.85 ± 0.02a

 

Methionine + Cysteine

1.40 ± 0.03a

1.90 ± 0.07b

 

Isoleucine

0.94 ± 0.02a

0.94 ± 0.03a

 

Leucine

0.78 ± 0.01a

0.76 ± 0.01a

 

Phenylalanine + Tyrosine

1.38 ± 0.02a

1.43 ± 0.01b

 

Lysine

0.49 ± 0.01a

0.49 ± 0.05a

 

Histidine

1.34 ± 0.01a

1.44 ± 0.02b

 

Arg/Lys ratio

3.98 ± 0.01a

4.81 ± 0.50b

 
  1. Data are presented as the mean ± standard deviation (SD) of triplicate experiments. AE-HPC and RMS-HPI represent hempseed protein isolated by alkaline extraction–isoelectric precipitation and reverse micelle method, respectively. Different lowercase (a–b) letters indicate markedly differences (P < 0.05).