نتایج جستجو برای: ray spectroscopy response surface methodology solid state fermentation

تعداد نتایج: 2996233  

2013
Anuj K Chandel Felipe AF Antunes Messias B Silva Silvio Silvério da Silva

BACKGROUND Fuel ethanol production from sustainable and largely abundant agro-residues such as sugarcane bagasse (SB) provides long term, geopolitical and strategic benefits. Pretreatment of SB is an inevitable process for improved saccharification of cell wall carbohydrates. Recently, ammonium hydroxide-based pretreatment technologies have gained significance as an effective and economical pre...

2012
Zhenqiang Xia Shengjun Wu

The growth lag phase during microbial fermentation reduced productivity and equipment efficiency. Inoculum age and size were the two important variables considered in fermentation optimisation. Previous studies investigated these two variables separately, in contrast to the orthogonal or use of response surface modelling method by recent papers. In nearly all cases, the inoculum from the late e...

Journal: :journal of nanostructures 2013
m. m. larijani p. balashabadi h. seyedi e. jafari-.khamse

titanium nitride-copper (tin-cu) nanocomposite films were deposited onto stainless steel substrate using hollow cathode discharge ion plating technique. the influence of cu content in the range of 2-7 at.% on the microstructure, morphology and mechanical properties of deposited films were investigated. structural properties of the films were studied by x-ray diffraction pattern. topography of t...

Journal: :Journal of general microbiology 1956
J F GARDNER L V JAMES S D RUBBO

Development of methodology for the recovery of citric acid from the fermented broth involves standardization of the various parameters to achieve maximum performance in terms of recovery and optimum conditions. The present investigation was carried out to study the purification of citric acid from fermented broth by calcium carbonate precipitation and subsequent acid hydrolysis. The parameters ...

2016
Ponnuswamy Vijayaraghavan Arumugaperumal Arun Naif Abdullah Al-Dhabi Samuel Gnana Prakash Vincent Mariadhas Valan Arasu Ki Choon Choi

BACKGROUND Hydrolytic enzymes, such as cellulases and proteases, have various applications, including bioethanol production, extraction of fruit and vegetable juice, detergent formulation, and leather processing. Solid-substrate fermentation has been an emerging method to utilize low-cost agricultural residues for the production of these enzymes. Although the production of carboxy methyl cellul...

Journal: :iranian journal of catalysis 2011
roozbeh javad kalbasi zohreh s. shahzeidi farzad zamani

a simple and green synthetic strategy to prepare bao/tio2-zro2 as a solid base catalyst was reported. these materials with various amounts of bao were prepared by the adsorption method. the physical and chemical properties of bao/tio2-zro2 were investigated by x-ray diffraction, x-ray fluorescence, specific surface area and bjh pore size distribution, ft-ir spectroscopy, scanning electron micro...

2016
Peter S. Deimel Francesco Allegretti

Photoelectron spectroscopy (PES) is one of the most established methods for determining the elemental composition and the chemical state of solid surfaces and thin films. This experiment focuses on X-ray Photoelectron Spectroscopy (XPS), which exploits Xray photons to excite electrons from the core levels of the atoms of a solid into the vacuum, thus probing the electronic structure of matter w...

Journal: :international journal of environmental research 0
j. hemmat environmental and industrial biotechnology group, department of biotechnology, iranian research organization for science and technology (irost), tehran, iran m. mazaheriassadi environmental and industrial biotechnology group, department of biotechnology, iranian research organization for science and technology (irost), tehran, iran

problematic dyes extensively used in different industries such as textile, paper, food, plasticsand cosmetics have undesirable environmental effects. white rot fungi demonstrating effective extracellularenzyme system, which is capable of degrading dyes and various xenobiotics. the aim of this study was tooptimize decolorization of reactive blue 19 (rb19) dye using phanerochaetechrysosporium. a ...

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