title: Ethanol production from potato peel waste (PPW).
abstract: Considerable concern is caused by the problem of potato peel waste (PPW) to potato industries in Europe. An integrated, environmentally-friendly solution is yet to be found and is currently undergoing investigation. Potato peel is a zero value waste produced by potato processing plants. However, bio-ethanol produced from potato wastes has a large potential market. If Federal Government regulations are adopted in light of the Kyoto agreement, the mandatory blending of bio-ethanol with traditional gasoline in amounts up to 10% will result in a demand for large quantities of bio-ethanol. PPW contain sufficient quantities of starch, cellulose, hemicellulose and fermentable sugars to warrant use as an ethanol feedstock. In the present study, a number of batches of PPW were hydrolyzed with various enzymes and/or acid, and fermented by Saccharomyces cerevisae var. bayanus to determine fermentability and ethanol production. Enzymatic hydrolysis with a combination of three enzymes, released 18.5 g L(-1) reducing sugar and produced 7.6 g L(-1) of ethanol after fermentation. The results demonstrate that PPW, a by-product of the potato industry features a high potential for ethanol production.
authors.affiliation: Institute of Technology of Agricultural Products, National Agricultural Research Foundation, 1, Sof. Venizelou St., Lycovrissi, 14123 Athens, Greece. dimarap@yahoo.com
authors.forename: D
authors.initials: D
authors.lastname: Arapoglou
authors.forename: Th
authors.initials: T
authors.lastname: Varzakas
authors.forename: A
authors.initials: A
authors.lastname: Vlyssides
authors.forename: C
authors.initials: C
authors.lastname: Israilides
mesh_terms: D056804:Biofuels; D000431:Ethanol / Q000378:metabolism*; D005060:Europe; D005285:Fermentation; D006868:Hydrolysis; D012037:Refuse Disposal / Q000379:methods*; D012441:Saccharomyces cerevisiae / Q000378:metabolism*; D011198:Solanum tuberosum / Q000378:metabolism*
chemical_list: D056804:Biofuels; D000431:Ethanol