Abstract:
:The elemental composition of microorganisms varies widely with respect to the N, S, P and ash content as well as many trace elements depending on microorganism and growth conditions. As a consequence, the mass of 1 C-mol of biomass can differ considerably from one microorganism to another. Experimental results show that sulfur is completely volatilized during combustion, so that the calculation of the mass fraction of oxygen is affected when S is not measured. However, its neglect does not seriously affect the elemental composition and the degree of reduction of biomass. Phosphorus is found in ash after combustion at the same degree of reduction as in biomass. Therefore, oxygen bound to it should be included in the elemental formula, so that the degree of reduction of biomass remains unchanged by inclusion of P into elemental formula. No external oxygen is incorporated into biomass during combustion and thus the measured ash fraction is correct.
journal_name
J Biotechnoljournal_title
Journal of biotechnologyauthors
Duboc P,Schill N,Menoud L,van Gulik W,von Stockar Udoi
10.1016/0168-1656(95)00135-0subject
Has Abstractpub_date
1995-12-01 00:00:00pages
145-58issue
2eissn
0168-1656issn
1873-4863pii
0168165695001350journal_volume
43pub_type
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