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Table 3 Soluble protein contents (mg/g dried cells) of cells kept at different storage temperatures for 12 months

From: The role of protein modifications in senescence of freeze-dried Acetobacter senegalensis during storage

Fractions

Storage temperature

−21°C

+4°C

+35°C

KPB

9.54 ± 1.41

11.05 ± 3.33

11.14 ± 2.98

LS

74.1 ± 6.15

66.67 ± 4.05

58.75 ± 6.38

HS

0.74 ± 0.43

1.26 ± 0.21

1.25 ±0.18

Ethanol

0.44 ± 0.18

0.39 ± 0.13

0.24 ± 0.12

NaOH

42.49 ± 0.71

41.99 ± 3.29

34.99 ± 5.65

  1. KPB: 50 mM potassium phosphate buffer solution, pH 6.8; LS: low salt buffer; HS: high salt buffer. Ethanol 70% (v/v) and NaOH 0.1 M. Data are presented as mean ± SD.
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Microbial Cell Factories

ISSN: 1475-2859

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