Biorefinery-Based Approach to Exploit Mixed Cultures of Lipomyces starkeyi and Chloroidium saccharophilum for Single Cell Oil Production

Gaetano Zuccaro, Angelo del Mondo, Gabriele Pinto, Antonino Pollio and Antonino De Natale
Additional contact information
Gaetano Zuccaro: Department of Chemical, Materials and Production Engineering, University of Naples Federico II, 80125 Napoli, Italy
Angelo del Mondo: Stazione Zoologica Anton Dohrn, Istituto Nazionale di Biologia, Ecologia e Biotecnologie Marine, Villa Comunale, 80121 Napoli, Italy
Gabriele Pinto: Dipartimento di Biologia, Universita’ degli Studi di Napoli Federico II, Via Cinthia 26, 80126 Napoli, Italy
Antonino Pollio: Dipartimento di Biologia, Universita’ degli Studi di Napoli Federico II, Via Cinthia 26, 80126 Napoli, Italy
Antonino De Natale: Dipartimento di Biologia, Universita’ degli Studi di Napoli Federico II, Via Cinthia 26, 80126 Napoli, Italy

Energies, 2021, vol. 14, issue 5, 1-20

Abstract: The mutualistic interactions between the oleaginous yeast Lipomyces starkeyi and the green microalga Chloroidium saccharophilum in mixed cultures were investigated to exploit possible synergistic effects. In fact, microalga could act as an oxygen generator for the yeast, while the yeast could provide carbon dioxide to microalga. The behavior of the two microorganisms alone and in mixed culture was studied in two synthetic media (YEG and BBM + G) before moving on to a real model represented by the hydrolysate of Arundo donax , used as low-cost feedstock, and previously subjected to steam explosion and enzymatic hydrolysis. The overall lipid content and lipid productivity obtained in the mixed culture of YEG, BBM + G and for the hydrolysate of Arundo donax were equal to 0.064, 0.064 and 0.081 g lipid ·g biomass −1 and 30.14, 35.56 and 37.22 mg lipid ·L −1 ·day −1 , respectively. The mixed cultures, in all cases, proved to be the most performing compared to the individual ones. In addition, this study provided new input for the integration of Single Cell Oil (SCO) production with agro-industrial feedstock, and the fatty acid distribution mainly consisting of stearic (C18:0) and oleic acid (C18:1) allows promising applications in biofuels, cosmetics, food additives and other products of industrial interest.

Keywords: mixed culture; Lipomyces starkeyi; Chloroidium saccharophilum; Single Cell Oils (SCOs); Arundo donax; biorefinery (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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