The global potential for Agave as a biofuel feedstock

Large areas of the tropics and subtropics are too arid or degraded to support food crops, but Agave species may be suitable for biofuel production in these regions. We review the potential of Agave species as biofuel feedstocks in the context of ecophysiology, agronomy, and land availability for this genus globally. Reported dry biomass yields of Agave spp., when annualized, range from <1 to 34 Mg ha−1 yr−1 without irrigation, depending on species and location. Some of the most productive species have not yet been evaluated at a commercial scale. Approximately 0.6 Mha of land previously used to grow Agave for coarse fibers have fallen out of production, largely as a result of competition with synthetic fibers. Theoretically, this crop area alone could provide 6.1 billion L of ethanol if Agave were re‐established as a bioenergy feedstock without causing indirect land use change. Almost one‐fifth of the global land surface is semiarid, suggesting there may be large opportunities for expansion of Agave crops for feedstock, but more field trials are needed to determine tolerance boundaries for different Agave species.

[1]  K. Mylsamy,et al.  Investigation on Physio-chemical and Mechanical Properties of Raw and Alkali-treated Agave americana Fiber , 2010 .

[2]  Park S. Nobel,et al.  Field productivity of a CAM plant, Agave salmiana, estimated using daily acidity changes under various environmental conditions , 1985 .

[3]  D. Zizumbo-Villarreal,et al.  Diversity and structure of landraces of Agave grown for spirits under traditional agriculture: A comparison with wild populations of A. angustifolia (Agavaceae) and commercial plantations of A. tequilana. , 2009, American journal of botany.

[4]  Alison M. Smith.  Prospects for increasing starch and sucrose yields for bioethanol production. , 2008, The Plant journal : for cell and molecular biology.

[5]  T. Heinze,et al.  Cellulose derivatives from cellulosic material isolated from Agave lechuguilla and fourcroydes , 2002 .

[6]  Ana Zapata.  Tequila: A Natural and Cultural History , 2003 .

[7]  R. B. García-Reyes,et al.  Contribution of agro-waste material main components (hemicelluloses, cellulose, and lignin) to the removal of chromium (III) from aqueous solution , 2009 .

[8]  Martijn Gough.  Climate change , 2009, Canadian Medical Association Journal.

[9]  N. Harriman.  Remarkable agaves and cacti , 1994, Economic Botany.

[10]  M. Oketch.  Determinants of human capital formation and economic growth of African countries , 2006 .

[11]  Tequila Herradura,et al.  Production of tequila from agave: historical influences and contemporary processes , 2000 .

[12]  M. Medina-Mora,et al.  Tequila: A Natural and Cultural History , 2005 .

[13]  P. Nobel,et al.  Achievable productivities of certain CAM plants: basis for high values compared with C3 and C4 plants. , 1991, The New phytologist.

[14]  Richard K. Perrin,et al.  Efficiency in Midwest US corn ethanol plants: A plant survey , 2009 .

[15]  W. Clary,et al.  Herbage production following tree and shrub removal in the pinyon-juniper type of Arizona. , 1981 .

[16]  Ana Valenzuela,et al.  Effects of soil management practices on soil fertility measurements on Agave tequilana plantations in Western Central Mexico , 2006 .

[17]  T. Nikam,et al.  Somatic embryogenesis in sisal (Agave sisalana Perr. ex. Engelm) , 2003, Plant Cell Reports.

[18]  Howard Griffiths,et al.  Exploiting the potential of plants with crassulacean acid metabolism for bioenergy production on marginal lands. , 2009, Journal of experimental botany.

[19]  Cornelis J. Weijer,et al.  PtdIns(3,4,5)P3-Dependent and -Independent Roles for PTEN in the Control of Cell Migration , 2007, Current Biology.

[20]  Fubao Sun,et al.  Partitioning the variance between space and time , 2010 .

[21]  R. H. Kirby,et al.  Vegetable fibres: botany, cultivation, and utilization , 1963 .

[22]  Danuta Martyn.  Climates of the World , 1992 .

[23]  P. Nobel,et al.  Productivity of Agave deserti: measurement by dry weight and monthly prediction using physiological responses to environmental parameters , 1984, Oecologia.

[24]  Chris Somerville,et al.  Feedstocks for Lignocellulosic Biofuels , 2010, Science.

[25]  Mercedes G. López,et al.  Water-soluble carbohydrates and fructan structure patterns from Agave and Dasylirion species. , 2006, Journal of agricultural and food chemistry.

[26]  Park S. Nobel,et al.  Environmental responses and productivity of the CAM plant, Agave tequilana , 1987 .

[27]  G. Blunden,et al.  The comparative leaf anatomy of Agave, Beschorneria, Doryanthes and Furcraea species (Agavaceae: Agaveae) , 1973 .

[28]  P. Nobel.  Par, Water, and Temperature Limitations on the Productivity of Cultivated Agave fourcroydes (Henequen) , 1985 .

[29]  R. Blench.  ASPECTS OF RESOURCE CONFLICT IN SEMI-ARID AFRICA , 1996 .

[30]  R M Rowell,et al.  Utilization of byproducts from the tequila industry: part 1: agave bagasse as a raw material for animal feeding and fiberboard production. , 2001, Bioresource technology.

[31]  P. Nobel,et al.  Temperature, water, and PAR influences on predicted and measured productivity of Agave deserti at various elevations , 2004, Oecologia.

[32]  M. Cedeño.  Tequila production. , 1995, Critical reviews in biotechnology.

[33]  Víctor González-Álvarez,et al.  Anaerobic treatment of Tequila vinasses in a CSTR-type digester  , 2010, Biodegradation.

[34]  T. W. Hoekstra,et al.  Arid Lands Management: TOWARD ECOLOGICAL SUSTAINABILITY , 1999 .

[35]  Andrew D. Jones,et al.  Supporting Online Material for: Ethanol Can Contribute To Energy and Environmental Goals , 2006 .

[36]  Park S. Nobel,et al.  High annual productivity of certain agaves and cacti under cultivation , 1992 .

[37]  D. Stewart,et al.  Plant fibres: Botany, chemistry and processing for industrial use , 1993 .

[38]  H. S. Gentry,et al.  Agaves of Continental North America. , 1983 .

[39]  J. Holtum,et al.  Agave as a biofuel feedstock in Australia , 2011 .

[40]  P. Nobel,et al.  Environmental Productivity Indices for a Chihuahuan Desert Cam Plant, Agave Lechuguilla , 1986 .

[41]  G. Lock.  Sisal; thirty year's sisal research in Tanzania , 1969 .

[42]  Park S. Nobel,et al.  Environmental influences on CO2 uptake by agaves, cam plants with high productivities , 1990, Economic Botany.

[43]  S. Schneider,et al.  Climate Change 2007 Synthesis report , 2008 .

[44]  P. Nobel,et al.  Loss of water transport capacity due to xylem cavitation in roots of two CAM succulents. , 1999, American journal of botany.

[45]  Barry Osmond,et al.  Curiosity and context revisited: crassulacean acid metabolism in the Anthropocene. , 2007, Journal of experimental botany.

[46]  N. Ochoa-Alejo,et al.  In vitro propagation of three Agave species used for liquor distillation and three for landscape , 2008, Plant Cell, Tissue and Organ Culture.