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https://www.readbyqxmd.com/read/28503798/neutral-and-alkaline-cellulases-production-engineering-and-applications
#1
REVIEW
Ines Ben Hmad, Ali Gargouri
Neutral and alkaline cellulases from microorganisms constitute a major group of the industrial enzymes and find applications in various industries. Screening is the important ways to get novel cellulases. Most fungal cellulases have acidic pH optima, except some fungi like Humicola insolens species. However, new applications require the use of neutral and alkaline cellulases in food, brewery and wine, animal feed, textile and laundry, pulp and paper industries, agriculture as well in scientific research purposes...
May 15, 2017: Journal of Basic Microbiology
https://www.readbyqxmd.com/read/28493276/analytical-characterization-of-the-hydrolysis-of-barley-malt-macromolecules-during-enzymatic-degradation-over-time-using-af4-mals-ri
#2
Heinrich Rübsam, Thomas Becker, Martina Gastl
The changes on the molecular weight distribution (MWD) and particle size distribution (PSD) during hydrolysis of barley malt in isothermal mashing procedures were determined using asymmetrical flow field flow fractionation coupled to multiangle laser light scattering and refractive index (AF4/MALS/RI). Mash/trials were focused on amylolytic starch degradation. Therefore, temperatures (65, 70, and 75 °C) were selected according to α- and β-amylases range of activity. Samples were produced by triplicate, tracking amylolytic processes over time periods from 10 to 90 min in each mash/trial...
May 10, 2017: Journal of Food Science
https://www.readbyqxmd.com/read/28487196/strategies-for-cost-effective-and-enhanced-production-of-bacterial-cellulose
#3
REVIEW
Mazhar Ul Islam, Muhammad Wajid Ullah, Shaukat Khan, Nasrullah Shah, Joong Kon Park
Bacterial cellulose (BC) has received substantial attention because of its high purity, mechanical strength, crystallinity, liquid-absorbing capabilities, biocompatibility, and biodegradability etc. These properties allow BC to be used in various fields, especially in industries producing medical, electronic, and food products etc. A major discrepancy associated with BC is its high production cost, usually much higher than the plant cellulose. To address this limitations, researchers have developed several strategies for enhanced production of BC including the designing of advanced reactors and utilization of various carbon sources...
May 6, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28460916/mass-spectrometry-for-the-characterization-of-brewing-process
#4
Adriana Fu Vivian, Caroline Tiemi Aoyagui, Diogo Noin de Oliveira, Rodrigo Ramos Catharino
Beer is a carbonated alcoholic beverage produced by fermenting ingredients containing starch, especially malted cereals, and other compounds such as water, hops and yeast. The process comprises five main steps: malting, mashing, boiling, fermentation and maturation. There has been growing interest in the subject, since there is increasing demand for beer quality aspects and beer is a ubiquitous alcoholic beverage in the world. This study is based on the manufacturing process of a Brazilian craft brewery, which is characterized by withdrawing samples during key production stages and using electrospray ionization (ESI) high-resolution mass spectrometry (HRMS), a selective and reliable technique used in the identification of substances in an expeditious and practical way...
November 2016: Food Research International
https://www.readbyqxmd.com/read/28391101/control-of-vocs-from-printing-press-air-emissions-by-anaerobic-bioscrubber-performance-and-microbial-community-of-an-on-site-pilot-unit
#5
D Bravo, P Ferrero, J M Penya-Roja, F J Álvarez-Hornos, C Gabaldón
A novel process consisted of an anaerobic bioscrubber was studied at the field scale for the removal of volatile organic compounds (VOCs) emitted from a printing press facility. The pilot unit worked under high fluctuating waste gas emissions containing ethanol, ethyl acetate, and 1-ethoxy-2-propanol as main pollutants, with airflows ranging between 184 and 1253 m(3) h(-1) and an average concentration of 1126 ± 470 mg-C Nm(-3). Three scrubber configurations (cross-flow and vertical-flow packings and spray tower) were tested, and cross-flow packing was found to be the best one...
April 6, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28377233/first-study-on-the-formation-and-resuscitation-of-viable-but-nonculturable-state-and-beer-spoilage-capability-of-lactobacillus-lindneri
#6
Junyan Liu, Lin Li, Bing Li, Brian M Peters, Yang Deng, Zhenbo Xu, Mark E Shirtliff
OBJECTIVES: This study aimed to investigate the spoilage capability of Lactobacillus lindneri during the induction and resuscitation of viable but nonculturable (VBNC) state. METHODS: L. lindneri strain was identified by sequencing the PCR product (amplifying 16S rRNA gene) using ABI Prism 377 DNA Sequencer. During the VBNC state induction by low temperature storage and beer adaption, total, culturable, and viable cells were assessed by acridine orange direct counting, plate counting, and Live/Dead BacLight bacterial viability kit, respectively...
April 2, 2017: Microbial Pathogenesis
https://www.readbyqxmd.com/read/28373030/quantitative-evaluation-of-haze-formation-of-koji-and-progression-of-internal-haze-by-drying-of-koji-during-koji-making
#7
Kazunari Ito, Katsuya Gomi, Masahiro Kariyama, Tsuyoshi Miyake
The construction of an experimental system that can mimic koji making in the manufacturing setting of a sake brewery is initially required for the quantitative evaluation of mycelia grown on/in koji pellets (haze formation). Koji making with rice was investigated with a solid-state fermentation (SSF) system using a non-airflow box (NAB), which produced uniform conditions in the culture substrate with high reproducibility and allowed for the control of favorable conditions in the substrate during culture. The SSF system using NAB accurately reproduced koji making in a manufacturing setting...
March 31, 2017: Journal of Bioscience and Bioengineering
https://www.readbyqxmd.com/read/28317512/alcohol-industry-sponsorship-of-university-student-sports-clubs-in-brazil
#8
Ilana Pinsky, Ana Regina Noto, Maria Carolina Botéquio de Moraes, Elaine Lucas Dos Santos, Robert Sparks, Kerry O'Brien
OBJECTIVE: The university sport environment represents an important target for alcohol industry marketing. This study investigated the nature of relationships between the alcohol industry and university student sports clubs (USSCs). METHOD: Semi-structured interviews were conducted with board members from 60 active USSCs in the city of São Paulo, Brazil. Interviews were transcribed and subjected to content analysis using NVivo10. RESULTS: All invited USSCs participated in the study...
March 2017: Journal of Studies on Alcohol and Drugs
https://www.readbyqxmd.com/read/28295427/microbial-dynamics-in-anaerobic-digestion-reactors-for-treating-organic-urban-residues-during-the-start-up-process
#9
R J Alcántara-Hernández, N Taş, S Carlos-Pinedo, A Durán-Moreno, L I Falcón
Anaerobic digestion of organic residues offers economic benefits via biogas production, still methane (CH4 ) yield relies on the development of a robust microbial consortia for adequate substrate degradation, among other factors. In this study, we monitor biogas production and changes in the microbial community composition in two semi-continuous stirred tank reactors during the setting process under mesophilic conditions (35°C) using a 16S rDNA high-throughput sequencing method. Reactors were initially inoculated with anaerobic granular sludge from a brewery wastewater treatment plant, and gradually fed organic urban residues (4·0 kg VS m(-3)  day(-1) ) ...
June 2017: Letters in Applied Microbiology
https://www.readbyqxmd.com/read/28290323/uncovering-patterns-of-consumers-interest-for-beer-a-case-study-with-craft-beers
#10
Gianluca Donadini, Sebastiano Porretta
To uncover patterns of consumer interest in craft beers, the authors explored the quality perception of craft beers in a panel of industrial mass-marketed beer drinkers (n=150) and examined the differences in interest for this beer segment between men and women. The authors adopted a conjoint rating experiment in which the respondents were given forty-nine beer profiles to evaluate and were asked to score the degree of interest in each profile on a 9-point scale. Each profile was described on eight attributes (type of brewery, brewing technology, characterizing raw materials, brewhouse equipment, location of the brewery, type of container, retail price, where to buy) varied at different levels...
January 2017: Food Research International
https://www.readbyqxmd.com/read/28281053/effect-of-adding-brewery-wastewater-to-pulp-and-paper-mill-effluent-to-enhance-the-photofermentation-process-wastewater-characteristics-biohydrogen-production-overall-performance-and-kinetic-modeling
#11
Jacqueline Xiao Wen Hay, Ta Yeong Wu, Joon Ching Juan, Jamaliah Md Jahim
Although a significant amount of brewery wastewater (BW) is generated during beer production, the nutrients in the BW could be reused as a potential bio-resource for biohydrogen production. Therefore, improvements in photofermentative biohydrogen production due to a combination of BW and pulp and paper mill effluent (PPME) as a mixed production medium were investigated comprehensively in this study. The experimental results showed that both the biohydrogen yield and the chemical oxygen demand removal were improved through the combination of BW and PPME...
March 9, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28278102/operational-and-biological-analyses-of-branched-water-adjust-and-combined-treatment-for-wastewater-from-a-chemical-industrial-park
#12
Ming Xu, Jiashun Cao, Chao Li, Yong Tu, Haisuo Wu, Weijing Liu
The combined biological processes of branched water-adjustment, chemical precipitation, hydrolysis acidification, secondary sedimentation, A/O and activated carbon treatment were used for chemical industrial wastewater treatment in the Taihu Lake Basin. Full-scale treatment resulted in effluent COD, TN, NH3-N and TP of 35.1 mg/L, 5.20 mg/L, 3.10 mg/L and 0.15 mg/L, respectively, with a total removal efficiency of 91.1%, 67.1%, 70.5% and 89.3%, respectively. In this process, short-circuited organic carbon from brewery wastewater was beneficial for denitrification and second-sulfate reduction...
February 22, 2017: Environmental Technology
https://www.readbyqxmd.com/read/28271150/german-water-infrastructure-in-china-colonial-qingdao-1898-1914
#13
Agnes Kneitz
Within the colorful tapestry of colonial possessions the German empire acquired over the short period of its existence, Qingdao stands out because it fulfilled a different role from settlements in Africa-especially because of its exemplary planned water infrastructure: its technological model, the resulting (public) hygiene, and the adjunct brewery. The National Naval Office (Reichsmarineamt), which oversaw the administration of the future "harbour colony"-at first little more than a little fishing village-enjoyed a remarkable degree of freedom in implementing this project...
March 7, 2017: NTM
https://www.readbyqxmd.com/read/28260371/analysis-of-100-year-old-beer-originated-from-the-czech-republic
#14
Jana Olšovská, Dagmar Matoulková, Martin Dušek, Jürgen Felsberg, Markéta Jelínková, Pavel Čejka, Karel Štěrba
Three bottles of different beers were found in 2015 during a reconstruction of the brewery of the Raven Trading s.r.o. company in Záhlinice, Czech Republic. Thanks to good storage conditions, it was possible to analyze their original characteristics. All three bottles contained most probably lager type beer. One beer had sulfuric and fecal off-flavors; it was bright with the original extract of 10.3° Plato. The second beer, with an original extract of 7.6° Plato, was dark and very acidic, resembling Lambic...
April 12, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28237364/an-overview-recycling-of-solid-barley-waste-generated-as-a-by-product-in-distillery-and-brewery
#15
REVIEW
Poonam Singh Nigam
This overview has focused on the options available for the utilisation of residual-biomass generated in distillery and brewery for the production of added-value products. Bio-processing approaches have been reviewed and discussed for the economical bioconversion and utilisation of this waste for the production of bioproducts, such as lactic acid, enzymes, xylitol and animal feed. Though this overview provides several options for the bioprocessing of this residual material, a more suitable one could be chosen according to the processing-facilities available and the amount of residue available in local area...
February 22, 2017: Waste Management
https://www.readbyqxmd.com/read/28213731/fungi-based-treatment-of-brewery-wastewater-biomass-production-and-nutrient-reduction
#16
M Hultberg, H Bodin
The beer-brewing process produces high amounts of nutrient-rich wastewater, and the increasing number of microbreweries worldwide has created a need for innovative solutions to deal with this waste. In the present study, fungal biomass production and the removal of organic carbon, phosphorus and nitrogen from synthetic brewery wastewater were studied. Different filamentous fungi with a record of safe use were screened for growth, and Trametes versicolor, Pleurotus ostreatus and Trichoderma harzianum were selected for further work...
February 17, 2017: Applied Microbiology and Biotechnology
https://www.readbyqxmd.com/read/28065666/simple-biogas-desulfurization-by-microaeration-full-scale-experience
#17
P Jeníček, J Horejš, L Pokorná-Krayzelová, J Bindzar, J Bartáček
Hydrogen sulfide in biogas is common problem during anaerobic treatment of wastewater with high sulfate concentration (breweries, distilleries, etc.) and needs to be removed before biogas utilization. Physico-chemical desulfurization methods are energetically demanding and expensive compare to biochemical methods. Microaeration, i.e. dosing of small amount of air, is suitable and cost effective biochemical method of sulfide oxidation to elemental sulfur. It has been widely used in biogas plants, but its application in anaerobic reactors for wastewater treatment has been rarely studied or tested...
January 5, 2017: Anaerobe
https://www.readbyqxmd.com/read/27997869/effect-of-extended-famine-conditions-on-aerobic-granular-sludge-stability-in-the-treatment-of-brewery-wastewater
#18
Santo Fabio Corsino, Alessandro di Biase, Tanner Ryan Devlin, Giulio Munz, Michele Torregrossa, Jan A Oleszkiewicz
Results obtained from three aerobic granular sludge reactors treating brewery wastewater are presented. Reactors were operated for 60d days in each of the two periods under different cycle duration: (Period I) short 6h cycle, and (Period II) long 12h cycle. Organic loading rates (OLR) varying from 0.7kgCODm(-3)d(-1) to 4.1kgCODm(-3)d(-1) were tested. During Period I, granules successfully developed in all reactors, however, results revealed that the feast and famine periods were not balanced and the granular structure deteriorated and became irregular...
February 2017: Bioresource Technology
https://www.readbyqxmd.com/read/27880922/genotoxicity-induced-by-water-and-sediment-samples-from-a-river-under-the-influence-of-brewery-effluent
#19
Ana Letícia Hilario Garcia, Cristina Araujo Matzenbacher, Marcela Silva Santos, Lismare Prado, Jaqueline Nascimento Picada, Suziane M Premoli, Dione S Corrêa, Liana Niekraszewicz, Johnny Ferraz Dias, Ivana Grivicich, Juliana da Silva
Brewery effluents contain complex mixtures that are discharged into rivers. Therefore, it is necessary to evaluate the genotoxic potential of these effluents. The study evaluated the genotoxicity of surface water and sediment samples from the Jacuí River in the state of Rio Grande do Sul, Brazil, which received effluents discharged from a brewery. The Salmonella/microsome test, Comet Assay and Micronucleus test on V79 cells, as well as the element profile (PIXE) and PAHs levels were used for this purpose...
February 2017: Chemosphere
https://www.readbyqxmd.com/read/27878746/electricity-production-and-characterization-of-high-strength-industrial-wastewaters-in-microbial-fuel-cell
#20
Afsin Y Cetinkaya, Oguz Kaan Ozdemir, Ahmet Demir, Bestami Ozkaya
Microbial fuel cells (MFCs) convert electrochemical energy into electrical energy immediately and have a big potential usage for the same time wastewater treatment and energy recovery via electro-active microorganisms. However, MFCs must be efficiently optimized due to its limitations such as high cost and low power production. Finding new materials to increase the cell performance and reduce cost for MFC anodes is mandatory. In the first step of this study, different inoculation sludges such as anaerobic gum industry wastewater, anaerobic brewery wastewater and anaerobic phosphate were tested, and MFC that was set up with anaerobic gum industry wastewater inoculation sludge exhibited the highest performance...
November 23, 2016: Applied Biochemistry and Biotechnology
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