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Kamzolova Svetlana V - - 2012
The yeast Yarrowia lipolytica VKM Y-2412 was selected as a prospective producer of α-ketoglutaric acid (KGA) from ethanol. The following peculiarities were found: (1) the intensive KGA production occurred only under the limitation of cell growth by thiamine and the excess of ethanol and nitrogen, (2) the production of KGA ...
Magdalon Juliana - - 2012
Oleic (OLA) and linoleic (LNA) acids are commonly consumed fatty acids and they can modulate the inflammatory response, in which macrophages play an important role. The aim of this study was to investigate the effects of these two fatty acids on the production of inflammatory mediators by macrophages. Rats received ...
Ladeira Márcio M - - 2012
The objective of this review is to report how the use of lipid sources in diets for ruminants can affect the fatty acid profile of beef. In addition, recent patents that can be utilized to alter the fatty acid profile in the meat, or which concern the synthesis of conjugated ...
Arslan Seher S Department of Food Engineering, Pamukkale University, 20070 Kinikli, Denizli, - - 2014
The use of corn oil in white cheese production instead of milk fat was investigated and its effects on the quality parameters of cheese were studied. It was demonstrated that the use of corn oil significantly affected the levels of dry matter, fat in dry matter, protein, salt in dry ...
Abd El Baky Hanaa H - - 2012
The effects of cultivation of Scenedesmus obliquus in nutrient medium supplemented with 0.03%, 3, 9% and 12% CO(2) or 2.5-20mgL(-1) of Fe(3+) on dry weight of biomass (DW), total lipid accumulation (TL contents) and total lipid productivity (TLP) were evaluated under indoor conditions. The accumulation of TL and TLP showed ...
Horiuchi H - - 2012
Lactobacillus delbrueckii ssp. bulgaricus (L. bulgaricus) and Streptococcus thermophilus are traditionally used for the manufacture of yogurt. It is said that a symbiotic relationship exists between Strep. thermophilus and L. bulgaricus and this decreases fermentation time. It is well known that L. bulgaricus is stimulated by the formate produced by ...
Hsieh Hsin-Ju - - 2012
Discovery of an alternative fuel is now an urgent matter because of the impending issue of oil depletion. Lipids synthesized in algal cells called triacylglycerols (TAGs) are thought to be of the most value as a potential biofuel source because they can use transesterification to manufacture biodiesel. Biodiesel is deemed ...
Malihan Lenny B - - 2012
The amenability of three brown algal species, Sargassum fulvellum, Laminaria japonica and Undaria pinnatifida, to hydrolysis were investigated using the ionic liquid (IL), 1-n-butyl-3-methylimidazolium chloride ([BMIM]Cl). Compositional analyses of the brown algae reveal that sufficient amounts of sugars (15.5-29.4wt.%) can be recovered. Results from hydrolysis experiments show that careful selection ...
Yuan Xufeng - - 2012
A microbial consortium MC1 was used to pretreat filter paper, office paper, newspaper, and cardboard to enhance methane production. The results of pretreatment indicated that sCOD of hydrolysates of the four substrates increased significantly in the early stage, and peaked on day 7. During pretreatment, ethanol, acetic acid, propionic acid, ...
Saeed Abrar - - 2012
The pre-hydrolysis liquor (PHL) of the kraft-based dissolving pulp production process contains various amounts of hemicelluloses that can be utilized in the production of value-added products. In this work, a new process was proposed for removing the inhibitors of PHL via employing a flocculation concept in order to facilitate the ...
Rosca Mariana G - - 2012
Mitochondrial reactive oxygen species (ROS) cause kidney damage in diabetes. We investigated the source and site of ROS production by kidney cortical tubule mitochondria in streptozotocin-induced type 1 diabetes in rats. In diabetic mitochondria, the increased amounts and activities of selective fatty acid oxidation enzymes is associated with increased oxidative ...
Sciotto Caterina - - 2012
The levels of trans isomers of eicosapentaenoic (EPA) acid and docosahexaenoic acid (DHA) in 77 omega-3 products on the European market have been studied. Fatty acids were analyzed as fatty acid methyl esters by gas chromatography with a flame ionization detector, using a cyanopropyl coated stationary phase. The amount of ...
Pudlik Agata M - - 2012
The citrate transporter CitP of lactic acid bacteria catalyzes electrogenic precursor-product exchange of citrate versus L-lactate during citrate-glucose cometabolism. In the absence of sugar, L-lactate is replaced by the metabolic intermediates/end products pyruvate, α-acetolactate, and acetate. In this study, the binding and translocation properties of CitP were analyzed systematically for ...
Krömer Jens O - - 2012
Aromatics are amongst the most important bulk feedstocks for the chemical industry, however, no viable bioprocess exists today and production is still dependent on petro-chemistry. In this article the production of aromatic precursors such as p-hydroxybenzoic acid (PHBA) and p-amino benzoic acid (PABA) in Saccharomyces cerevisiae was evaluated using metabolic ...
Orellana Arturo - - 2012
An efficient and stereo- and regiooselective synthesis of (-)-kainic acid, through a high-pressure promoted Diels-Alder cycloaddition of a trisubstituted vinylogous malonate derived from 4-hydroxyproline, is described. The bicylic adduct could be converted to the natural product with complete stereocontrol.
Seo Jong-Su - - 2012
Mycobacterium aromativorans strain JS19b1(T) can utilize phenanthrene as a sole source of carbon and energy. Strain JS19b1(T) degrades phenanthrene through highly branched metabolic pathways, including dioxygenation on C-1,2, C-3,4 and C-9,10 positions and ring opening by both ortho- and meta-cleavage. The presence of novel metabolic pathways was confirmed by replacement ...
Wu Z - - 2012
This trial was conducted to determine the effect of the addition of 2 or 4% oleic acid to an hydrogenated fat coating applied to an experimental supplement with 55 or 58% lysine sulfate on ruminal escape and intestinal absorption of Lys. Two lactating Holstein cows (103 d in milk and ...
Fernandes Jane Luiza Nogueira - - 2012
In the present investigation, we studied the enzymatic synthesis of monoacylglycerols (MAG) and diacylglycerols (DAG) via the esterification of saturated fatty acids (stearic, palmitic and an industrial residue containing 87% palmitic acid) and glycerol in a solvent-free system. Three immobilized lipases (Lipozyme RM IM, Lipozyme TL IM and Novozym 435) ...
Salgado José Manuel - - 2012
The enzyme PAD from Lactobacillus plantarum CECT 748(T) decarboxylates some cinnamic acids namely p-coumaric acid (p-CA), caffeic acid (CA), and ferulic acid (FA) into their corresponding 4-vinyl derivatives (4-VD): 4-vinyl phenol (4-VP), 4-vinyl catechol (4-VC), and 4-vinyl guaiacol (4-VG), respectively, which are valuable food additives mainly employed as flavouring agents. ...
Zhuang Yingbin - - 2012
Production of bio-oil by microwave-assisted direct liquefaction (MADL) of Ulva prolifera was investigated, and the bio-oil was analyzed by elementary analysis, Fourier transform infrared spectroscopic analysis (FT-IR), and gas chromatography-mass spectrometry (GC-MS). The results indicate that the liquefaction yield is influenced by the microwave power, liquefaction temperature, liquefaction time, catalyst ...
Elbeshbishy Elsayed - - 2012
Batch anaerobic studies were conducted using five mixtures (M1-M5) of bovine serum albumin (BSA) and starch. The results showed that co-digestion of BSA and starch had a positive impact on the methane production. The highest methane production of 288mL, the highest methane yield of 360mL CH(4)/g COD(added), and the highest ...
Leggio Antonella - - 2012
In meat products the contents of free amino acids and free fatty acids are two important parameters used to establish their quality. These compounds play a very important role in defining the sensorial characteristics and acceptability of meat products. An innovative procedure for the measurement of free amino acid and ...
Kupiainen Laura - - 2012
Organosolv methods can be used to delignify lignocellulosic crop residues for pulp production or to pretreat them prior to enzymatic hydrolysis for bioethanol production. In this study, organic solvent was used as an acidic hydrolysis catalyst to produce glucose. Hydrolysis experiments were carried out in 5-20% formic acid at 180-220°C. ...
Kwon Eilhann E - - 2012
This study provides a novel methodology for biodiesel (FAME) production under ambient pressure, which resolves most drawbacks of current commercialized biodiesel conversion via the transesterification reaction. This has been achieved by means of a thermo-chemical process and a true continuous flow system. This also enables combination of esterification of free ...
Phrueksawan Parichat - - 2012
This study shows that Rhizopus oryzae is capable of directly utilizing cassava pulp alone to L: -lactic acid in solid state fermentation (SSF). pH control at 6.0 helped prevent end product inhibition. Increasing lactate titer was observed at the higher initial moistened water due to the higher degree of substrate ...
Jeong Tae Su - - 2012
Acid-catalyzed hydrothermal hydrolysis is one path to cellulosic glucose and subsequently to its dehydration end products such as hydroxymethyl furfural (HMF), formic acid and levulinic acid. The effect of sugar decomposition not only lowers the yield of fermentable sugars but also forms decomposition products that inhibit subsequent fermentation. The present ...
Xia Xiao-Feng - - 2012
An efficient method to construct cyclopenta[c]chromene skeletons by Lewis acid-catalyzed intramolecular [3+2] cycloaddition of cyclopropane 1,1-diesters with alkynes is presented. Two new fused cycles can be formed in one step in moderate to excellent yields (up to 94 %), and the products can be converted into bioactive barbituric acid derivatives (1) ...
Klement Tobias - - 2012
ABSTRACT: BACKGROUND: In the last years, the biotechnological production of platform chemicals for fuel components has become a major focus of interest. Although ligno-cellulosic material is considered as suitable feedstock, the almost inevitable pretreatment of this recalcitrant material may interfere with the subsequent fermentation steps. In this study, the fungus ...
Scialla Julia J JJ Department of Medicine, University of Miami, Miami, Florida 33136, USA. - - 2012
Increased acid excretion may promote renal injury. To evaluate this in African Americans with hypertensive nephrosclerosis, we studied the association between the net endogenous acid production and progression of kidney disease in 632 patients in the AASK trial. Protein and potassium intakes were estimated from 24 h urea nitrogen and ...
Huang Jing-Mei - - 2012
In the presence of p-toluenesulfonic acid and iodine, styrene derivatives undergo head-to-tail dimerization followed by trapping with nitriles to yield the corresponding Ritter-type products.
Tang Liang - - 2012
  It is known that Cinnamomum camphora seed oil (CCSO) is rich in medium-chain fatty acids (MCFAs) or medium-chain triacylglycerols (MCTs). The purpose of the present study was to produce zero-trans MCTs-enriched plastic fat from a lipid mixture (500 g) of palm stearin (PS) and CCSO at 3 weight ratios ...
Leggio Antonella - - 2012
This paper compares some important parameters and the free amino acid and biogenic amine contents of cured industrial and homemade meat products. To this aim, industrial and homemade "soppressata" and "salsiccia", typical dry fermented sausages produced in Southern Italy, were analyzed. The homemade sausages showed a higher level of free ...
Wang Hui - - 2012
To establish high-efficiency pretreatments of cornstalk (CS) for hydrogen fermentative production, various pretreatment strategies have been investigated and contrasted in this work. Five pretreatment methods, including acid-soaking pretreatment, base-soaking pretreatment, high-temperature-assisted acid pretreatment, high-temperature-assisted base pretreatment and ultrasonic-assisted acid pretreatment (UAP), were performed on CS. The results showed that UAP ...
Zhang Fuzhong - - 2012
Microbial production of chemicals is now an attractive alternative to chemical synthesis. Current efforts focus mainly on constructing pathways to produce different types of molecules. However, there are few strategies for engineering regulatory components to improve product titers and conversion yields of heterologous pathways. Here we developed a dynamic sensor-regulator ...
Bulushev Dmitri A - - 2012
The rate of hydrogen production from vapour-phase formic acid decomposition can be increased by 1-2 orders of magnitude by doping a Pd/C catalyst with potassium ions. Surface potassium formate and/or bicarbonate species could be involved in the rate-determining step of this reaction.
Xu Weiyin - - 2012
Organosolv switchgrass lignin is depolymerized and hydrodeoxygenated with a formic acid hydrogen source, 20 wt % Pt/C catalyst, and ethanol solvent. The combination of formic acid and Pt/C is found to promote production of higher fractions of lower molecular weight compounds in the liquid products. After 4 h of reaction, all of the ...
Tarvainen Marko Tapio - - 2012
Normal diet contains large quantities of oxidized fatty acids, glycerolipids, cholesterol and their cytotoxic degradation products, because many foods in the diet are fried, heated, or otherwise processed, and consumed often after long storage. There is also evidence that the acid medium of stomach promotes lipid peroxidation and that the ...
Zand Afshin - - 2012
Isozeaxanthin under acidic conditions forms an allylic cation which reacts readily with thiol nucleophiles. With N-acetylcysteine as a nucleophile the products obtained are carotenoid-cysteine conjugates in which the amino acid moiety binds carotenoid via sulphur in position 4. The water solubility of the products can be increased by deprotection of ...
Liu Junhan - - 2012
Scenedesmus spp. have been reported as potential microalgal species used for the lipid production. This study investigated the effects of light intensity (at three levels: 50, 250, and 400 μmol photons m(-2) s(-1)) on the growth and lipid production of Scenedesmus sp. 11-1 under N-limited condition. Carotenoid to chlorophyll ratio was higher when ...
Ghosh Saptarshi - - 2012
Shikimic acid is a key intermediate for the synthesis of the antiviral drug oseltamivir (Tamiflu®). Shikimic acid can be produced via chemical synthesis, microbial fermentation and extraction from certain plants. An alternative production route is via biotransformation of the more readily available quinic acid. Much of the current supply of ...
Bondioli Paolo - - 2012
Nannochloropsis sp. F&M-M24 and Tetraselmis suecica F&M-M33 were cultivated outdoors in Green Wall Panels under nutrient deficiency to stimulate oil synthesis. Under nitrogen deprivation, Nannochloropsis attained average biomass and lipid productivities of 9.9 and 6.5gm(-2)day(-1), respectively. Starved Tetraselmis cultures achieved a biomass productivity of about 7.6gm(-2)day(-1) and a lipid productivity ...
Popovich Cecilia A - - 2012
The freshwater microalga Neochloris oleoabundans was used to study algal lipid production in enriched natural seawater, in order to assess its suitability as biodiesel feedstock. Optimal and nitrogen-stress (N-stress) conditions were analyzed. Under optimal conditions, the strain's growth rate was 0.73 div day(-1) and the biomass concentration was 1.5gL(-1), while ...
Kapu N U S - - 2012
Spent mushroom compost (SMC), a byproduct of commercial mushroom cultivation, poses serious environmental problems that have hampered the growth of this important agro-industry. In an effort to develop new applications for SMC, we explored its use as a feedstock for bioethanol production. SMC constitutes approximately 30%w/w polysaccharides, 66% of which ...
Liu Zhen - - 2012
Hemicellulose, which contains glucose, xylose, and arabinose as the 3 main sugars, is an important renewable source for biorefinery. In this study, propionic acid production from glucose, xylose, or arabinose using Propionibacterium acidipropionici ATCC 4875 was investigated. Using xylose, the predominant sugar in hemicellulose, a final propionic acid concentration of ...
Zhang Dan - - 2012
The production of poly(γ-glutamic acid) by Bacillus subtilis NX-2 from cane molasses and monosodium glutamate waste liquor (MGWL) was studied for the first time in this work. When batch fermentation was carried out with untreated molasses, 33.6±0.37gL(-1) PGA was obtained with a productivity of 0.46±0.006gL(-1)h(-1). In order to minimize the ...
Ramos-Morales Francisco - - 2012
The first stress that foodborne pathogens find upon ingestion is the very acidic pH of the stomach of the host. In addition, intracellular pathogens like Salmonella are submitted to low pH inside the host cells. Two general acid survival systems are found in these organisms: acid resistance mechanisms and acid ...
Zhu Junli - - 2012
Mayonnaise made from contaminated eggs has been linked to outbreaks of Salmonella infections. This study was undertaken to determine the fate of salmonellae in home-style mayonnaise and acid solutions with or without chemical preservatives. Egg yolks were inoculated with different levels of a three-serotype (Typhimurium, Heidelberg, and Enteritidis [untypeable phage ...
Hajjaj Hassan - - 2012
Amino acids were used as sole nitrogen sources to examine their effects on the production of water-soluble red pigments and citrinin by Monascus ruber ATCC 96218 cultivated on chemically defined media. In general, when glycine, tyrosine, arginine, serine, or histidine were used as sole nitrogen sources, they favored the production ...
Allam Uday Sankar - - 2012
During the course of infection, Salmonella has to face several potentially lethal environmental conditions, one such being acidic pH. The ability to sense and respond to the acidic pH is crucial for the survival and replication of Salmonella. The physiological role of one gene (STM1485) involved in this response, which ...
Abdo Mohannad - - 2012
Equimolar quantities of 2-(ethoxy)ethaneseleninic acid and p-thiocresol react rapidly in dichloromethane solution to give the selenosulfide along with disulfide, diselenide, and two products oxidized at sulfur, the thiosulfonate and the selenosulfonate. The latter two are new for this sort of coupling; their formation may be the result of an early ...
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