Table 7 Levels of independent variables utilized in definitive screening design for optimizing the delignification efficiency (%) of Garlic peels (30 mg mL− 1) using laccase from V. salarius.

From: Green valorization of garlic peel waste using halophilic laccase for efficient biomass delignification and biorefinery applications

Independent variable

Unit

Symbol

Coded variable level

Low (− 1)

Medium (0)

High (+ 1)

Concentration of HBAa

mM

A

1

5.5

10

Laccase content

U L− 1

B

50

125

200

pH

–

C

5

7

9

Temperature

°C

D

30

40

50

  1. a 4-Hydroxybenzoic acid.
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