New procedure for extraction of algal lipids from wet biomass: A green clean and scalable process.

Celine Dejoye Tanzi (1) , Maryline Abert (1) , Farid Chemat (1)

1 SQPOV - Sécurité et Qualité des Produits d'Origine Végétale

" A new extraction procedure of lipids from wet microalgae. " Nannochloropsis oculata and Dunaliella salina were chosen as a microalgae. " Influence of operating parameters on the extraction yields will be studied. " Utilization of terpenes bio-solvents recognized as environmentally safer. a b s t r a c t A new procedure, called Simultaneous Distillation and Extraction Process (SDEP), for lipid extraction from wet microalgae (Nannochloropsis oculata and Dunaliella salina) was reported. This method does not require a pre-drying of the biomass and employs alternative solvents such as d-limonene, a-pinene and p-cymene. This procedure has been compared with Soxhlet extraction (Sox) and Bligh & Dyer method (B&D). For N. oculata, results showed that SDEP-cymene provided similar lipid yields to B&D (21.45% and 23.78%), while SDEP-limonene and pinene provided lower yields (18.73% and 18.75% respectively). For D. salina, SDEP-pinene provided the maximum lipid yield (3.29%) compared to the other solvents, which is quite close to B&D result (4.03%). No significant differences in terms of distribution of lipid classes and fatty acid composition have been obtained for different techniques. Evaluation of energy consumption indicates a substantial saving in the extraction cost by SDEP compared to the conventional extraction technique, Soxhlet.

Mots clés: wet lipid extraction; Nannochloropsis oculata; terpene

Mots clés: microalgae; Dunaliella salina

Domaines: Sciences du Vivant [q-bio]

Celine Dejoye Tanzi, Maryline Abert, Farid Chemat. New procedure for extraction of algal lipids from wet biomass: A green clean and scalable process.. Bioresource Technology, 2013, 134, pp.271-275. ⟨10.1016/j.biortech.2013.01.168⟩. ⟨hal-01328660⟩