Skip to main content

Table 3 Amino acid composition of protein extracted from B. juncea using thin stillage and NaCl solution.

From: Biorefinery process for protein extraction from oriental mustard (Brassica juncea (L.) Czern.) using ethanol stillage

Amino acid

Thin stillagea

NaCl solutiona

Protein isolated from B. junceab

FAOc

Cysteine

5.3 ± 0.0

5.2 ± 0.2

2.9 ± 0.1

N

Asparagine

5.4 ± 0.2

6.0 ± 0.1

Nd

N

Methionine

2.2 ± 0.2

2.3 ± 0.0

2.7 ± 0.0

2.5e

Threonine

3.1 ± 0.1

3.5 ± 0.2

4.3 ± 0.1

3.4

Serine

3.9 ± 0.1

4.2 ± 0.0

4.5 ± 0.0

N

Glutamic acidf

22.2 ± 0.1

23.0 ± 0.2

20.8 ± 0.1

N

Glycine

4.6 ± 0.1

4.9 ± 0.1

5.2 ± 0.0

N

Alanine

3.9 ± 0.1

4.3 ± 0.1

4.4 ± 0.1

N

Valine

6.0 ± 0.2

3.0 ± 0.2

5.2 ± 0.1

3.5

Isoleucine

3.4 ± 0.0

3.8 ± 0.1

3.7 ± 0.1

2.8

Leucine

6.6 ± 0.1

7.5 ± 0.1

7.8 ± 0.0

6.6

Phenylalanine

3.6 ± 0.2

4.1 ± 0.4

4.5 ± 0.0

N

Histidine

4.5 ± 0.1

4.5 ± 0.1

2.8 ± 0.0

1.9

Lysine

5.2 ± 0.2

5.9 ± 0.3

4.9 ± 0.1

5.8

Arginine

7.0 ± 0.2

7.6 ± 0.1

10.0 ± 0.0

N

Tryptophan

N

N

1.5 ± 0.0

N

Tyrosine

N

N

2.3 ± 0.0

6.3g

Aspartic acid

N

N

7.0 ± 0.1h

N

Proline

N

N

5.6 ± 0.0

N

  1. Data expressed as g/100 g of protein are the mean ± standard deviations (SD) of three analyses.
  2. a 1.0 M NaCl added. b, c From references (Alireza-Sadeghi et al. 2006; FAO 2002).
  3. d N means no analysis.
  4. e Value for methionine + cysteine. f Value for glutamic acid + glutamine.
  5. g Value for tyrosine + phenylalanine. h Value for aspartic acid + asparagine.