We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
EFFECT OF NICKEL CONTAMINATION ON THE GROWTH OF OLEAGINOUS YEASTS IN HYDROLISATES OF Arundo donax.
- Authors
Pirozzi, Domenico; Toscano, Giuseppe; Caputo, Gerardo; Florio, Ciro; Rugari, Felicia; Travaglini, Giuseppe; Yousuf, Abu; Zuccaro, Gaetano
- Abstract
Hydrolysates of Arundo donax, a crop offering high productivity in contaminated or salinized soils with no inputs of irrigation and agrochemicals, were used in a discontinuous fermenter to grow the oleaginous yeast Lipomyces starkey, to obtain microbial oils potentially useful for the production of 2nd-generation biodiesel. A mixture of fermentable sugars was obtained by steam-explosion and subsequent enzymatic hydrolysis of the lignocellulosic materials. The concentration of Ni2+ ions and of inhibitors of the microbial growth significantly affected both the biomass and the triglyceride yields. The microbial lipids produced were compatible with the synthesis of an automotive-grade biodiesel. A physico-mathematical model, developed to describe the biomass growth, demonstrated that the concentration of heavy metals affected the maximum biomass concentration, though its influence on the specific growth rate of the yeasts was not significant.
- Subjects
NICKEL &; the environment; YEAST research; GIANT reed; HEAVY metals &; the environment; METALS &; the environment
- Publication
Environmental Engineering & Management Journal (EEMJ), 2015, Vol 14, Issue 7, p1683
- ISSN
1582-9596
- Publication type
Article
- DOI
10.30638/eemj.2015.179