Perspective

An Outlook on Microalgal Biofuels

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Science  13 Aug 2010:
Vol. 329, Issue 5993, pp. 796-799
DOI: 10.1126/science.1189003

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  • Response to J. Benemann's E-Letter

    J. Benemann argues about the present market price for algae we reported ("An outlook on microalgal biofuels," Perspectives, 13 August 2010, p. 796) and indicates that the value given is not realistic because it is based on algae pills. Farms presently exist in the United States that can produce Spirulina at prices only 20 to 50 times the cost price of soy protein.

    The price we gave was based on the values reported in the...

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    Competing Interests: None declared.
  • How to Make Cost-Effective Microalgal Biofuel

    R. H. Wijffles and M. J. Barbosa state that the market price for microalgae is 500 times that of soybeans ("An outlook on microalgal biofuels," Perspectives, 13 August 2010, p. 796). However, they confuse prices for microalgae tablets sold retail as nutritional supplements with commodity prices for soybeans. Bulk prices for Spirulina (Arthrospira platensis), produced by the two major U.S. algae farms, located in Califo...

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    Competing Interests: None declared.
  • Safety of Microalgal Biofuels' Co-Products
    • Weibo Wang, scientific research personnel
    • Other Contributors:
    Safety of Microalgal Biofuels' Co-Products

    R. H. Wijffels and M. J. Barbosa's Perspective in the special section on Scaling Up Alternative Energy ("An outlook on microalgal biofuels," 13 August 2010, p. 796) emphasizes that economically feasible production of microalgae for biofuel will only be achieved if co-products are also explored. Wijffels and Barbosa estimated that plenty of protein would be a co-product of microalgal bi...

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    Competing Interests: None declared.