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EC number: 204-465-2
CAS number: 121-33-5
No more data on results.
Table 1: Total carbon evolves as CO2 (mgC/100g soil) from soil-clay mixtures treated with H2SO4 and amended with vanillin
(yield 75mg C/100 soil) and the % of vanillin mineralisation after 3 weeks of incubation (mean +/- standard error).
Ml H2SO4/ No clay added 9% kaolinite 9% montmorillonite
100g soil pH C % pH C % pH C %
0 5.1 7+/-2.3 9 5 8+/-1.1 11 5.6 31+/-2.2 41
0.1 3.8 4+/-0.9 5 3.8 3+/-0.4 4 4.2 30+/-1.9 40
0.3 3.2 2+/-0.6 3 3.2 4+/-1.1 5 3.4 26+/-4 35
0.6 2.8 2+/-0.5 3 2.9 4+/-1.1 5 2.8 22+/-0.2 29
1.2 2.3 3+/-0.7 4 2.2 3+/-0.6 4 2.2 10+/-2.1 13
2 1.8 3+/-0.3 4 1.8 3+/-0.6 4 1.6 2+/-0.4 3
Table: Vanillin dissipation half-life time related to the montmorillonite load in the soil.
Montmorillonite load (%) 0 5 10 20
DT50 (days) 5.0 4.1 3.9 2.3
None of the publications dealing with the degradation of vanillin in soil have been selected as key study. However, they can be used in a weight of evidence approach to report that vanillin can be degraded in different soils, in different conditions of temperature (13 and 20°C) and that vanillic acid, which is itself degraded in soil, is one of the degradation product.
It is to be noted that since vanillin is readily biodegradable, further
degradation in soil would not be necessary to investigate.
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