Table 2.
Chemical properties of the raw materials and their extracts prepared with 0%–5% acetic acid
| Moisture (%) | Ash (%) | Crude protein (%) | Crude lipid (%) | Acetic acid (%) | pH | |
|---|---|---|---|---|---|---|
| CSPa | 11.9 ± 0.5 | 35.7 ± 3.2 | 25.0 ± 1.2 | 0.2 ± 0.1 | Nte | 8.9 ± 0.1 |
| CSAb | 2.1 ± 0.7 | 98.2 ± 2.3 | Ndf | Nd | Nt | 12.3 ± 0.1 |
| CSP‐A0 c | 13.5 ± 2.1ab, g | 39.0 ± 1.4bcd | 32.7 ± 1.2a | 0.3 ± 0.1b | 4.8 ± 0.2d | 8.5 ± 0.0b |
| CSP‐A1c | 11.1 ± 1.1bc | 39.8 ± 4.1bcd | 1.9 ± 0.3b | 0.7 ± 0.2a | 47.4 ± 3.4bc | 4.4 ± 0.0d |
| CSP‐A3c | 14.6 ± 2.1ab | 44.2 ± 1.7b | 1.6 ± 0.2b | 0.6 ± 0.1a | 41.2 ± 4.5c | 4.3 ± 0.0d |
| CSP‐A5c | 15.7 ± 0.1a | 43.7 ± 2.7b | 1.3 ± 0.1b | 0.3 ± 0.1b | 44.0 ± 2.8bc | 4.1 ± 0.0d |
| CSA‐A0d | 7.3 ± 1.1cd | 87.6 ± 3.6a | Nd | Nd | Nd | 11.4 ± 0.1a |
| CSA‐A1d | 5.8 ± 1.2d | 41.2 ± 0.2bc | Nd | Nd | 48.8 ± 1.1b | 10.9 ± 0.0a |
| CSA‐A3d | 6.0 ± 1.0d | 35.3 ± 1.3 cd | Nd | Nd | 56.3 ± 1.8a | 6.0 ± 0.1c |
| CSA‐A5d | 10.8 ± 2.1bc | 33.9 ± 2.7d | Nd | Nd | 61.9 ± 1.0a | 4.7 ± 0.0d |
Data expressed as the mean ± SD in triplicate determinations.
a
Crab shell powder.
b
Crab shell ash.
c
The extracts from CSP with 0%–5% acetic acid.
d
The extracts from CSA with 0%–5% acetic acid.
e
Not tested.
f
Not detected.
g
The different small letters indicate significantly different values in each the vertical column (p < 0.05).