Table 1 Brewer’s spent grain composition and enzymatic activities of SSF-BSG extract and experimental diets.

From: Solid-state fermented brewer's spent grain enzymatic extract increases in vitro and in vivo feed digestibility in European seabass

Composition (% dry matter)

Moisture

Reducing sugars (mg sugars g−1)

Protein

Cellulose

Hemicellulose

Lignin

BSG

4.3

6.7

25.8

21.2

23.8

15.0

Enzymatic activity (U kg−1 diet)

Cellulase

Xylanase

β-glucosidase

Phytase

Protease

 

SSF-BSG extract

1343

15,885

–

–

–

 

Experimental diets

Control

270

309

330

280

92

 

BSG0.1

1110

1590

330

652

646

 

BSG0.2

1910

5538

510

717

1824

 

BSG0.4

5075

10,153

830

1050

1686

 

BSG0.4 + 

4420

9955

820

989

1740

 

NAT

1220

4590

710

1036

–

 
  1. BSG: Brewer’s spent grain.
  2. SSF-BSG extract: lyophilized extract obtained after solid-state fermentation of BSG with Aspergillus ibericus.
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