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Table 1 Densitometric analysis of dot blot experiments with the supernatants of the adsorption reaction performed with 50 µg xylanase (GH10-XA) and 1 × 1010 spores

From: Conversion of xylan by recyclable spores of Bacillus subtilis displaying thermophilic enzymes

Xylanase source

Amount of sample used

Density (OD/mm2)a

Amount of xylanase (ng)b

Xylanase μg (% total)b

Purified xylanase (ng)

1000.0

690.77

NA

NA

500.0

450.37

NA

NA

250.0

204.87

NA

NA

125.0

176.36

NA

NA

62.5

114.49

NA

NA

Unbound (μl)

10.0

1149.80

1855.10

34.08 ± 2.36

5.0

587.18

892.18

(68%)

2.5

312.98

406.05

 
  1. NA not applicable
  2. aDensity measured by optical density (OD) per square millimeter and obtained by ChemiDocXRS apparatus with Quantity-One software (Bio-Rad)
  3. bCalculated from signals (density OD/mm2) obtained with purified Xylanase