Dual potential of microalgae as a sustainable biofuel feedstock and animal feed

Journal of Animal Science and Biotechnology

Xin Gen Lei¹  Jonggun Kim¹  Krystal K Lum¹ 

[1] Department of Animal Science, Cornell University, Ithaca, NY 14850, USA

关键词: Nutrition;    Health;    Feed;    Biofuel;    Algae;   

Others  :  804815
DOI  :  10.1186/2049-1891-4-53

 received in 2013-06-06, accepted in 2013-12-18,  发布年份 2013

【 摘 要 】

The rise in global population has led to explorations of alternative sources of energy and food. Because corn and soybean are staple food crops for humans, their common use as the main source of dietary energy and protein for food-producing animals directly competes with their allocation for human consumption. Alternatively, de-fatted marine microalgal biomass generated from the potential biofuel production may be a viable replacement of corn and soybean meal due to their high levels of protein, relatively well-balanced amino acid profiles, and rich contents of minerals and vitamins, along with unique bioactive compounds. Although the full-fatted (intact) microalgae represent the main source of omega-3 (n-3) polyunsaturated fatty acids including docohexaenoic acid (DHA) and eicosapentaenoic acid (EPA), the de-fatted microalgal biomass may still contain good amounts of these components for enriching DHA/EPA in eggs, meats, and milk. This review is written to highlight the necessity and potential of using the de-fatted microalgal biomass as a new generation of animal feed in helping address the global energy, food, and environmental issues. Nutritional feasibility and limitation of the biomass as the new feed ingredient for simple-stomached species are elaborated. Potential applications of the biomass for generating value-added animal products are also explored.

【 授权许可】

   
2013 Lum et al.; licensee BioMed Central Ltd.

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