Screening of Industrial Wastewaters as Feedstock for the Microbial Production of Oils for Biodiesel Production and High-Quality Pigments
The production of biodiesel has notably increased over the past decade. Currently, plant oil is the main feedstock for biodiesel production, but, due to concerns related to the competition with food production, alternative oil feedstocks have to be found. Oleaginous yeasts are known to produce high...
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| Format: | Article |
| Language: | English |
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Wiley
2012-01-01
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| Series: | Journal of Combustion |
| Online Access: | http://dx.doi.org/10.1155/2012/153410 |
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| author | Teresa Schneider Simone Graeff-Hönninger William Todd French Rafael Hernandez Wilhelm Claupein William E. Holmes Nikolaus Merkt |
| author_facet | Teresa Schneider Simone Graeff-Hönninger William Todd French Rafael Hernandez Wilhelm Claupein William E. Holmes Nikolaus Merkt |
| author_sort | Teresa Schneider |
| collection | DOAJ |
| description | The production of biodiesel has notably increased over the past decade. Currently, plant oil is the main feedstock for biodiesel production, but, due to concerns related to the competition with food production, alternative oil feedstocks have to be found. Oleaginous yeasts are known to produce high amounts of lipids, but no integrated process from microbial fermentation to final biodiesel production has reached commercial realization yet due to economic constraints. Therefore, growth and lipid production of red yeast Rhodotorula glutinis was tested on low-cost substrates, namely, wastewaters from potato, fruit juice, and lettuce processing. Additionally, the production of carotenoids as high-value by-products was examined. All evaluated wastewaters met the general criteria for microbial lipid production. However, no significant increase in lipid content was observed, probably due to lack of available carbon in wastewaters from fruit juice and lettuce processing, and excess of available nitrogen in potato processing wastewater, respectively. During growth on wastewaters from fruit juice and lettuce processing the carotenoid content increased significantly in the first 48 hours. The relations between carbon content, nitrogen content, and carotenoid production need to be further assessed. For economic viability, lipid and carotenoid production needs to be increased significantly. The screening of feedstocks should be extended to other wastewaters. |
| format | Article |
| id | doaj-art-de4d7f1b88e548d4aa73845ac7d6f7cd |
| institution | Kabale University |
| issn | 2090-1968 2090-1976 |
| language | English |
| publishDate | 2012-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Journal of Combustion |
| spelling | doaj-art-de4d7f1b88e548d4aa73845ac7d6f7cd2025-08-20T03:26:30ZengWileyJournal of Combustion2090-19682090-19762012-01-01201210.1155/2012/153410153410Screening of Industrial Wastewaters as Feedstock for the Microbial Production of Oils for Biodiesel Production and High-Quality PigmentsTeresa Schneider0Simone Graeff-Hönninger1William Todd French2Rafael Hernandez3Wilhelm Claupein4William E. Holmes5Nikolaus Merkt6Crop Science, Universität Hohenheim, Fruwirthstraβe 23, 70599 Stuttgart-Hohenheim, GermanyCrop Science, Universität Hohenheim, Fruwirthstraβe 23, 70599 Stuttgart-Hohenheim, GermanyDave C. Swalm School of Chemical Engineering, Mississippi State University, Starkville P.O. Box 9595, MS 39762, USADave C. Swalm School of Chemical Engineering, Mississippi State University, Starkville P.O. Box 9595, MS 39762, USACrop Science, Universität Hohenheim, Fruwirthstraβe 23, 70599 Stuttgart-Hohenheim, GermanyDave C. Swalm School of Chemical Engineering, Mississippi State University, Starkville P.O. Box 9595, MS 39762, USACrop Science, Universität Hohenheim, Fruwirthstraβe 23, 70599 Stuttgart-Hohenheim, GermanyThe production of biodiesel has notably increased over the past decade. Currently, plant oil is the main feedstock for biodiesel production, but, due to concerns related to the competition with food production, alternative oil feedstocks have to be found. Oleaginous yeasts are known to produce high amounts of lipids, but no integrated process from microbial fermentation to final biodiesel production has reached commercial realization yet due to economic constraints. Therefore, growth and lipid production of red yeast Rhodotorula glutinis was tested on low-cost substrates, namely, wastewaters from potato, fruit juice, and lettuce processing. Additionally, the production of carotenoids as high-value by-products was examined. All evaluated wastewaters met the general criteria for microbial lipid production. However, no significant increase in lipid content was observed, probably due to lack of available carbon in wastewaters from fruit juice and lettuce processing, and excess of available nitrogen in potato processing wastewater, respectively. During growth on wastewaters from fruit juice and lettuce processing the carotenoid content increased significantly in the first 48 hours. The relations between carbon content, nitrogen content, and carotenoid production need to be further assessed. For economic viability, lipid and carotenoid production needs to be increased significantly. The screening of feedstocks should be extended to other wastewaters.http://dx.doi.org/10.1155/2012/153410 |
| spellingShingle | Teresa Schneider Simone Graeff-Hönninger William Todd French Rafael Hernandez Wilhelm Claupein William E. Holmes Nikolaus Merkt Screening of Industrial Wastewaters as Feedstock for the Microbial Production of Oils for Biodiesel Production and High-Quality Pigments Journal of Combustion |
| title | Screening of Industrial Wastewaters as Feedstock for the Microbial Production of Oils for Biodiesel Production and High-Quality Pigments |
| title_full | Screening of Industrial Wastewaters as Feedstock for the Microbial Production of Oils for Biodiesel Production and High-Quality Pigments |
| title_fullStr | Screening of Industrial Wastewaters as Feedstock for the Microbial Production of Oils for Biodiesel Production and High-Quality Pigments |
| title_full_unstemmed | Screening of Industrial Wastewaters as Feedstock for the Microbial Production of Oils for Biodiesel Production and High-Quality Pigments |
| title_short | Screening of Industrial Wastewaters as Feedstock for the Microbial Production of Oils for Biodiesel Production and High-Quality Pigments |
| title_sort | screening of industrial wastewaters as feedstock for the microbial production of oils for biodiesel production and high quality pigments |
| url | http://dx.doi.org/10.1155/2012/153410 |
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