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Table 3 Volatile compounds in ensiled crops

From: Ensiling of crops for biogas production: effects on methane yield and total solids determination

Substrate

n

Lactic acid

Ethanol

Acetic acid

Butyric acid

Total

Maize

2

1.26 ± 0.02

0.21 ± 0.00

0.74 ± 0.04

BD

2.21 ± 0.05

Hemp

2

BD

0.29 ± 0.01

0.94 ± 0.04

0.11 ± 0.01

1.13 ± 0.04

Beets

2

0.91 ± 0.07

4.82 ± 0.86

1.09 ± 0.14

BD

6.82 ± 0.87

Beet tops

2

1.08 ± 0.04

0.53 ± 0.04

0.56 ± 0.00

BD

2.18 ± 0.06

  1. Contents of volatile compounds measured in the ensiled crops, expressed as percentage of wet weight (mean ± SD). Determinations were made in duplicate starting with the steeping step.
  2. BD, below detection limit.
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Biotechnology for Biofuels and Bioproducts

ISSN: 2731-3654

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