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Results 451 - 500 of 1851
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Li Zheng - - 2006
Batch and fed-batch fermentation studies were performed to evaluate the potential of corn steep liquor (CSL)-supplemented acid-hydrolysate of soybean meal (AHSM) as an alternative to yeast extract (YE) for the production of L-lactic acid by Lactobacillus casei LA-04-1. The CSL-supplemented AHSM gave an outstanding result in supporting L-lactic acid production ...
Saito Katsuichi - - 2006
The objectives of this study were to evaluate the fundamental properties of potato pulp and to explore its potential uses. Lactic acid bacteria were the dominant microbes in potato pulp over the season (maximum being 10(8)/g). The water content in potato pulp was approximately 80% in all season. Starch and ...
Filya I - - 2006
AIMS: To evaluate the effect of Lactobacillus buchneri, heterofermentative lactic acid bacteria (LAB), on the fermentation, aerobic stability and ruminal degradability of whole-crop maize silages under laboratory conditions. Two homofermentative LAB were tested for the purpose of comparison. METHODS AND RESULTS: Maize was harvested at early dent [290 g kg(-1) ...
Garai G - - 2006
Biogenic amines play an important physiological role in mammals, and high amounts of some exogenous amines in human diet may contribute to a wide variety of toxic effects. These amines are commonly found in many foodstuffs, particularly in fermented products such as cheese, meat products, beer, wine, and ciders. Here, ...
Venus Joachim - - 2006
Originally, lactic acid was produced from pure substrates like glucose. Increasingly, however, agricultural feedstocks such as grains and green biomass are also being used as raw materials for the biotechnological production of lactic acid. A high-productivity lactic acid bacterium strain was selected, process parameters were optimized for the batch fermentation ...
Moldes A B - - 2006
On the basis of previous knowledge, different agroindustrial wastes were submitted to dilute-acid hydrolysis with H2SO4 to obtain hemicellulosic sugars and then employed for lactic acid production by Lactobacillus pentosus. Toxic compounds released from lignin did not affect lactic acid fermentation when hydrolysates from trimming vine shoots, barley bran husks, ...
González-Fandos E - - 2006
AIMS: The aim of this study was to evaluate the effect of lactic acid washing on the growth of Listeria monocytogenes on poultry legs stored at 4 degrees C for 7 days. METHODS AND RESULTS: Fresh inoculated chicken legs were dipped into either a 0.11, 0.22 mol l(-1) or 0.55 ...
Bengmark Stig - - 2007
It is today generally accepted, that the intestinal bacterial flora is deeply involved in the pathogenesis of human inflammatory bowel diseases (IBDs), although the exact presence of unwanted or lack of specific crucial bacteria are not yet known. Westerners lack to large extent important immunomodulatory and fibre-fermenting lactic acid bacteria ...
Thomsen Mette Hedegaard - - 2007
The green crop drying industry in Denmark uses Italian rye grass, clover, and alfalfa as raw materials for the production of green pellets. The green crop drying industry solves its energy economical problems by heating and pressing of the green crop before drying. The produced sidestream is called brown juice. ...
Seto Akira - - 2006
A microbial colony that contained a marked amount of cellulose was isolated from vineyard soil. The colony was formed by the associated growth of two bacterial strains: a cellulose-producing acetic acid bacterium (st-60-12) and a lactic acid bacterium (st-20). The 16S rDNA-based taxonomy indicated that st-60-12 belonged to Gluconacetobacter xylinus ...
Hao Jianrong - - 2007
Pseudomonas stutzeri SDM oxidized DL-lactic acid (25.5 g l(-1)) into pyruvic acid (22.6 g l(-1)) over 24 h. Both NAD(+)-independent D-lactate dehydrogenase and NAD(+)-independent L-lactate dehydrogenase were found for the first time in the bioconversion of lactate to pyruvate based on the enzyme activity assay and proteomic analysis.
Liao Xia - - 2006
This paper reports on specific open and interconnected CO(2) foams of poly(L-lactic acid). The effect of varying gas concentration and hence physical changes induced by CO(2) has been investigated and thus used to generate specific structures. The developed morphologies have a skin core structure with larger pores in the core ...
Dinopoulos A - - 2006
We present a case of infantile-onset Alexander disease (AD) with a novel glial fibrillary acidic protein mutation but without clinical evidence of neurologic deterioration. Brain MRI studies showed typical AD findings and increasing size of frontal cavitations. Serial proton MR spectroscopy demonstrated high levels of myo-inositol and lactic acid and ...
Ralston James P - - 2006
We present a case of a 40-year-old woman with a history of a wide local excision for a melanoma and subsequent postoperative soft tissue loss who was successfully treated with injectable poly-L-lactic acid (Sculptra). After only one treatment with the filler agent, the treated area showed significant volume enhancement and ...
Bengmark Stig - - 2006
Increasing evidence suggests that two factors significantly influence outcome in a surgical emergency - premorbid health and the degree of inflammation during the first 24 h following trauma. Repeat observations suggest that the depth of post-trauma immunoparalysis reflects the height of early inflammatory response. Administration to surgical emergencies, as was ...
Graves Tara - - 2007
The combined effects of lactic acid and acetic acid on ethanol production by S. cerevisiae in corn mash, as influenced by temperature, were examined. Duplicate full factorial experiments (three lactic acid concentrations x three acetic acid concentrations) were performed to evaluate the interaction between lactic and acetic acids on the ...
Hickey Dara K - - 2006
To assess the contribution of starter lactic acid bacteria (LAB) to lipolysis in Cheddar cheese, the evolution of free fatty acids (FFAs) was monitored in Cheddar cheeses manufactured from pasteurized milks with or without starter. Starter-free cheeses were acidified by a combination of lactic acid and glucono-delta-lactone. Starter cultures were ...
Gerardu V A M - - 2007
Previous work showed that a single application of 40% chlorhexidine varnish, EC40, reduced plaque acidogenicity upon sucrose challenge during less than 3 weeks. It was questioned whether lactic acid production could be reduced significantly longer when the treatment was intensified. Therefore, the effects of three consecutive EC40 applications on plaque ...
Venkatesh C - - 2007
Lactic acid content was found to vary among the different proglottid types of the parasite. This higher amount of lactic acid might be considered as the end product of anaerobic metabolism. The pyruvic acid level of the parasitic proglottides remained lower than lactate level. The intermediary carbohydrate metabolites, viz. lactate, ...
Panesar P S - - 2007
Lactic acid is a versatile organic acid, which finds major application in the food, pharmaceuticals, and chemical industries. Microbial fermentation has the advantage that by choosing a strain of lactic acid bacteria producing only one of the isomers, an optically pure product can be obtained. The production of L: (+) ...
Rivas Beatriz - - 2006
The recovery of tartaric acid (TA) from distilled vinification lees coming from the white and red winemaking technology was optimized using response surface methodology and Statistica 5.0 software. The sequential treatment of dissolving TA and further calcium tartrate (CaT) precipitation could be used to recover up to 92.4% of the ...
Behr Jürgen - - 2006
Resistance to hops is a prerequisite for lactic acid bacteria to spoil beer. In this study we analyzed mechanisms of hop resistance of Lactobacillus brevis at the metabolism, membrane physiology, and cell wall composition levels. The beer-spoiling organism L. brevis TMW 1.465 was adapted to high concentrations of hop compounds ...
Osaka Issey - - 2006
Linear and cyclic polylactic acids (PLAs) were characterized using electrospray ionization mass spectrometry (ESI-MS) as part of our ongoing investigation of the hydrolysis mechanism of biodegradable polymers. The condensation oligomers of linear polylactic acid (LPLA) were synthesized by thermal dehydration of L-lactic acid. The trimer and tetramer base polymers of ...
Leonard Aimee L - - 2006
Poly-L-lactic acid is a biodegradable synthetic polymer used in an injectable form for subcutaneous volume restoration. Volumetric correction following subcutaneous and deep dermal injection of poly-L-lactic acid is thought to occur through a foreign body tissue response leading to increased production of fibroblasts and subsequent neocollagenesis. Despite the growing popularity ...
Batdorj B - - 2006
AIMS: The aim of this study was to isolate and identify bacteriocin-producing lactic acid bacteria (LAB) issued from Mongolian airag (traditional fermented mare's milk), and to purify and characterize bacteriocins produced by these LAB. METHODS AND RESULTS: Identification of the bacteria (Enterococcus durans) was carried out on the basis of ...
López F N A - - 2006
AIMS: To study the effects of temperature, NaCl and acid (HCl, citric, acetic and lactic) concentrations on the specific growth rate (mu), lag phase (lambda), and h0 of Lactobacillus pentosus IGLAC01. METHODS AND RESULTS: Response surface (RS) methodology (D-optimal design) was used with a dummy variable, to account for the ...
Kleinschmit D H - - 2006
The results of adding Lactobacillus buchneri to silages from 43 experiments in 23 sources reporting standard errors were summarized using meta-analysis. The effects of inoculation were summarized by type of crop (corn or grass and small grains) and the treatments were classified into the following categories: 1) untreated silage with ...
Suck Roland - - 2006
Recombinant production in bacteria of soluble and monomeric Phl p 1, a major allergen of Timothy grass pollen, has proved to be very problematic. In order to facilitate expression and purification of this allergen, a recombinant variant was designed with a single amino acid substitution. Several comparative analyses with natural ...
Jackson Donald C - - 2007
Freshwater turtles as a group are more resistant to anoxia than other vertebrates, but some species, such as painted turtles, for reasons not fully understood, can remain anoxic at winter temperatures far longer than others. Because buffering of lactic acid by the shell of the painted turtle is crucial to ...
Murphy J - - 2007
OBJECTIVE: Sodium hexametaphosphate (SHMP) is a widely used industrial preservative commonly found in children's drinks. In this paper we examined the effect of SHMP incorporated into children's drinks on acid production by the oral biofilm by monitoring salivary concentrations of lactic acid. MATERIALS AND METHOD: Twelve healthy adult subjects with ...
Arendt Elke K - - 2007
Sourdough has been used since ancient times and its ability to improve the quality and increase the shelf-life of bread has been widely described. During sourdough fermentation, lactic acid bacteria (LAB) produce a number of metabolites which have been shown to have a positive effect on the texture and staling ...
Gobbetti Marco - - 2007
Celiac disease (CD) is one of the most common food intolerance. The only effective treatment for CD is a strict adherence to a gluten-free diet throughout the patient's lifetime. Gluten-free products are not widely available and are usually more expensive than their gluten-containing counterparts. There is, therefore, an urgent need ...
Kishida Hisanori - - 2006
Alkali hydrothermal experiments with glycolaldehyde were carried out at 300 degrees C. Glycolaldehyde was converted into lactic acid in a yield of 28% based on the starting carbon mass of glycolaldehyde. A conversion pathway for glycolaldehyde into lactic acid is proposed and our results suggest that the pathway via glycolaldehyde ...
Sheng Jiangyun - - 2006
Caries-causing oral bacteria such as Streptococcus mutans are protected by the actions of F-ATPases against acid damage in dental plaque acidified by glycolytic acid production or ingestion of acids foods and beverages. Catabolites such as glucose and sucrose were found to enhance the protection of S. mutans and also other ...
Vleggaar Danny - - 2006
Facial rejuvenation has traditionally centered on the correction of ptosis, lines, and wrinkles, typically achieved by surgical tightening of the skin or by injecting soft-tissue fillers. In recent years, volumetric augmentation and recontouring have been recognized as fundamentally important aspects of facial rejuvenation. An overview of volume restoration and recontouring ...
Sakai Kenji - - 2006
We have shown that stable lactic acid fermentation of model kitchen refuse occurs with intermittent pH adjustment under nonsterilized conditions. Nonetheless, the optical activity of the accumulated lactic acid was low, which is disadvantageous for the production of high-quality poly-l-lactic acid. Here, we attempt to increase optical purity by introducing ...
Okubo Yoko - - 2006
The community structure of pink-colored microbial mats naturally occurring in a swine wastewater ditch was studied by culture-independent biomarker and molecular methods as well as by conventional cultivation methods. The wastewater in the ditch contained acetate and propionate as the major carbon nutrients. Thin-section electron microscopy revealed that the microbial ...
Kawahata Miho - - 2006
Using two types of genome-wide analysis to investigate yeast genes involved in response to lactic acid and acetic acid, we found that the acidic condition affects metal metabolism. The first type is an expression analysis using DNA microarrays to investigate 'acid shock response' as the first step to adapt to ...
Samelis John - - 2006
A polyphasic taxonomic approach was used to identify a major atypical group of gas-forming, arginine-negative lactic acid bacteria associated with spoilage of whole (nonsliced) refrigerated (4 degrees C) cooked hams produced in two Greek industrial meat plants. Biochemical characterization revealed that the ham isolates shared their phenotypic properties with Leuconostoc ...
Lam Samuel M - - 2006
Poly-L-lactic acid gained U.S. Food and Drug Administration approval for use in human immunodeficiency virus-related facial lipoatrophy in August of 2004. Since that time, it has become available for use in the United States for human immunodeficiency virus facial lipoatrophy patients and for off-label uses in other areas for soft-tissue ...
John Rojan P - - 2006
Saccharification and fermentation of cassava (Manihot esculenta) bagasse was carried out in a single step for the production of L-(+)-lactic acid by Lactobacillus casei and Lactobacillus delbrueckii. Using 15.5% w/v of cassava bagasse as the raw material, a maximum starch to lactic acid conversion of 96% was obtained with L. ...
Małolepsza-Jarmołowska K - - 2006
Intravaginal tablets based on hydrophilic methylcellulose and containing lactic acid complexed with chitosan undergo deformation under standard conditions. The high flow--limit of the gel originating from the tablets as well as its dynamic viscosity should ensure the durability of this dosage form on the vaginal mucosa. By selecting either ratios ...
Yamada Mamoru - - 2007
The ability to produce vanillin and/or vanillic acid from isoeugenol was screened using resting cells of various bacteria. The vanillin- and/or vanillic-acid-producing activities were observed in strains belonging to the genera Achromobacter, Aeromonas, Agrobacerium, Alcaligenes, Arthrobacter, Bacillus, Micrococcus, Pseudomonas, Rhodobacter, and Rhodococcus. Strain IE27, a soil isolate showing the highest ...
Hierro Núria - - 2006
Real-time PCR, or quantitative PCR (QPCR), has been developed to rapidly detect and quantify the total number of yeasts in wine without culturing. Universal yeast primers were designed from the variable D1/D2 domains of the 26S rRNA gene. These primers showed good specificity with all the wine yeasts tested, and ...
El-Beyrouty Claudine - - 2006
OBJECTIVE: To review the clinical data for poly-L-lactic acid, a synthetic polymer used as an intradermal injection for the treatment of HIV associated facial fat loss (lipoatrophy). DATA SOURCES: A literature search was performed using MEDLINE (1966-August 2006). The search was limited to articles published in English and used the ...
John Rojan P - - 2006
Protease-treated wheat bran (20% w/v) of particle size less than 300 microm containing 65% (w/w) starch was used for the simultaneous saccharification and L-(+)-lactic acid fermentation by the mixed cultures of Lactobacillus casei and Lactobacillus delbrueckii. Maximum lactate yield after various process optimizations was 123 g l(-1) with a productivity ...
Nanjo Yoko - - 2006
A flow-injection dual biosensor system with microdialysis sampling is proposed for the simultaneous determination of D-lactic and L-lactic acids. The dialysate from the microdialysis tube is delivered to a sample loop of the six-way autoinjector and then automatically injected into the flow-injection line with a dual enzyme electrode arranged in ...
Thirion L - - 2006
Melasma is an endocrine-mediated facial hypermelanosis with epidermal and occasionally dermal components. We tested in a randomized double-blind design the effect of a whitening formulation (Thiospot intensive((R))) on this skin disorder. The product containing ethyl linoleate, thioctic acid, octadecenedioic acid, lactic acid and ethylhexyl methoxycinnamate was applied twice daily for ...
Anang D M - - 2006
Oxalic acid was evaluated as a treatment for reducing populations of naturally occurring microorganisms on raw chicken. Raw chicken breasts were dipped in solutions of oxalic acid (0, 0.5, 1.0, 1.5, and 2.0%, wt/vol) for 10, 20, and 30 min, individually packed in oxygen-permeable polyethylene bags, and stored at 4 ...
Bosilevac Joseph M - - 2006
Lactic acid has become the most commonly used organic acid for treatment of postevisceration beef carcasses. Many processors have also implemented 2% lactic acid washes on preevisceration carcasses. We previously demonstrated that hot water washing and steam vacuuming are effective carcass interventions. Because of the effectiveness of hot water, we ...
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