yeast Articles
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Effect of xylose and nutrients concentration on ethanol production by a newly isolated extreme thermophilic bacterium
An extreme thermophilic ethanol-producing strain was isolated from an ethanol high-yielding mixed culture, originally isolated from a hydrogen producing reactor operated at 70 °C. Ethanol yields were assessed with increasing concentrations of xylose, up to 20 g/l. The ability of the strain to grow without nutrient addition (yeast extract, peptone and vitamins) was also assessed. The maximum ...
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Modified ADM1 for high-rate anaerobic co-digestion of thermally pre-treated brewery surplus yeast wastewater
Co-digestion of surplus yeast with brewery wastewater is a potentially economical method for recovering energy, in the form of biogas, from this difficult to dispose of by-product. In this work a modified version of the ADM1 (Anaerobic Digestion Model No. 1) was calibrated for an anaerobic digester fed with thermally pre-treated brewery yeast surplus wastewater. The model could predict ...
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Anaerobic co-digestion of surplus yeast and wastewater to increase energy recovery in breweries
Surplus yeast is a residue produced during brewery process, which presents high contents of organic matter. Biogas production from yeast could significantly contribute to bioenergy production in breweries, via biogas generation. Co-digestion of surplus yeast and brewery wastewater in a single treatment step would simplify the technical and economical requirements for the transformation of both ...
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Butanol and ethanol production from tapioca starch wastewater by
Clostridium spp.Total (TWW) and tapioca starch wash wastewater (TSWW) from a cassava processing plant in Thailand were analyzed for their composition with a view to evaluate their potential as substrates for solvent production by ABE fermentation with Clostridium spp. Starch was detected at a 1.63-fold higher level in the TWW than that in the TSWW (24.4% and 15.0% (w/w), respectively). The chemical oxygen demand ...
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Bioethanol Dispersing as World Challenge
Bioethanol dispersing finds broad application in a national economy as solvent, also it is applied in production of a butadiene, as fuel for rocket engines, car engines, antifreeze, etc., it is an important intermediate product of organic synthesis (in production of esters, celluloid, artificial silk, ethyl aldehyde, acetic acid, chloroform, ethyl oxide and other products). Ethanol contains ...
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Role of acetyl coenzyme a synthesis and breakdown in alternative carbon source utilization in candida albicans
Acetyl coenzyme A (acetyl-CoA) is the central intermediate of the pathways required to metabolize nonfermentable carbon sources. Three such pathways, i.e., gluconeogenesis, the glyoxylate cycle, and β-oxidation, are required for full virulence in the fungal pathogen Candida albicans. These processes are compartmentalized in the cytosol, mitochondria, and peroxosomes, necessitating ...
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Converting plant waste into biofuels
Promising advances using yeast and fungi. Written by Nancy W. Stauffer. You can read the original story in MIT News MIT researchers are genetically engineering yeast to break down stubborn plant fibers into sugars that it can then ferment — a first step toward a potentially cost-effective single-organism process for manufacturing cellulosic biofuels. The source of the genetic material: ...
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Use of cooling tower blow down in ethanol fermentation
Reducing water consumption in bioethanol production conserves an increasingly scarce natural resource, lowers production costs, and minimizes effluent management issues. The suitability of cooling tower blow down water for reuse in fermentation was investigated as a means to lower water consumption. Extensive chemical characterization of the blow down water revealed low concentrations of toxic ...
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Bulk carbon, oxygen, and hydrogen stable isotope composition of recent resins from amber-producing Hymenaea
Antimicrobial peptide magainin II, isolated from the skin of the African clawed toad, has shown activity in vitro against a range of micro-organisms. Transgenic potato lines expressing a synthetic magainin gene show improved resistance to the bacterial plant pathogen, Erwinia carotovora. Culturable bacterial and fungal communities associated with magainin-producing potato plants were compared ...
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A co-beneficial system using aquatic plants: bioethanol production from free-floating aquatic plants used for water purification
A co-beneficial system using constructed wetlands (CWs) planted with aquatic plants is proposed for bioethanol production and nutrient removal from wastewater. The potential for bioethanol production from aquatic plant biomass was experimentally evaluated. Water hyacinth and water lettuce were selected because of their high growth rates and easy harvestability attributable to their ...
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Multiple uses for heat exchangers in brewing
There are numerous uses for heat exchangers in breweries, from cooling, pasteurising and fermenting products, through to efficiently dealing with waste streams such as yeast slurry. Compared to other methods of heating, heat exchangers can be much more energy efficient, providing both environmental and economic benefits. One of the first uses of heat exchangers in brewing is for rapidly cooling ...
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CO2 Monitor For Breweries: Carbon Dioxide Safety and How to Stay Safe
Carbon dioxide is a necessary byproduct of the brewing process, yet too much CO2 can be dangerous to employee health. In Germany, two workers died at the same brewery in 2012 due to hazardous levels of CO2 present in beer mixing and pressure tanks. Learn more about how CO2 levels can get out of control during the beer brewing process and ways to protect your staff from this deadly gas. Carbon ...
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Engine detonation with bioethanol cavitation
Bioethanol is an alcohol of an organic origin which receives from a sugar ferment reaction. In the process of ethanol formation, starch from grains of plants turns in simple sugar in reaction with enzymes. Natural sugar ferments with yeast and form a mix of alcohol, water and unfermented remains. Alcohol is separated from a mix in distillation capacities and additionally clears in rectifying ...
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Engine detonation with bioethanol cavitation
Bioethanol is an alcohol of an organic origin which receives from a sugar ferment reaction. In the process of ethanol formation, starch from grains of plants turns in simple sugar in reaction with enzymes. Natural sugar ferments with yeast and form a mix of alcohol, water and unfermented remains. Alcohol is separated from a mix in distillation capacities and additionally clears in rectifying ...
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How is Ethanol Produced?
What is ethanol? Ethanol is an alternative fuel made from corn, sugarcane, wheat, and other agricultural products, and is produced by the fermentation of carbohydrates such as sugar, starch, and cellulose. Ethanol Feedstocks All plants contain sugars that can be fermented to make ethanol in a process called biochemical conversion. Plant material can also be converted to ethanol using heat and ...
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A possible solution: Biodiesel made with garbage `the fuel of the future`
A group of Spanish developers working under the company name Ecofasa, headed by chief executive officer and inventor Francisco Angulo, has developed a biochemical process to turn urban solid waste into a fatty acid biodiesel feedstock.Here is a translated description of the tecnology:ECOFA is a new fuel, which due to its origin, its production, and its solution to the inherent problems in any ...
By Ecofa
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Case study - Bakery ethanol
Overview A bread and bun bakery was faced with installing air pollution control equipment to control the volatile organic compounds (VOCs) emitted during their baking process. The local regulatory agency requires bakeries that generate over 25 tons of ethanol per year to reduce emissions by 95% by installing control devices on their ovens. The airstream that needed to be treated included ethanol ...
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Amit Kumar and Gregory Stephanopoulos on turning waste gases into biofuels
Research conducted by Kumar, along with a team led by Professor Greg Stephanopoulos, looks to the future of emissions reduction and recycling. Original story at MIT News One of the most promising ways to combat carbon emissions is to transform those emissions into something useful. Recently, Gregory Stephanopoulos, the Willard Henry Dow Professor in Chemical Engineering at MIT; postdoc Amit ...
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Bioethanol dispersing – world challenge
Bioethanol dispersing finds broad application in a national economy as solvent, also it is applied in production of a butadiene, as fuel for rocket engines, car engines, antifreeze, etc., it is an important intermediate product of organic synthesis (in production of esters, celluloid, artificial silk, ethyl aldehyde, acetic acid, chloroform, ethyl oxide and other products). Ethanol contains ...
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Biogas Plant - Case Study
The first unit of the integrated system at the Gonen Renewable Energy Complex consists of a state of the art biogas plant. Our biogas plant, which achieves the highest capacity utilization rate in Turkey, both generates electricity and produces raw materials for the CatLiq and Organic Fertilizer ...
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