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https://www.readbyqxmd.com/read/29793067/performance-and-methane-fermentation-characteristics-of-a-pilot-scale-anaerobic-membrane-bioreactor-anmbr-for-treating-pharmaceutical-wastewater-containing-m-cresol-mc-and-iso-propyl-alcohol-ipa
#1
Zhaobo Chen, Xue Li, Dongxue Hu, Yubo Cui, Fuguang Gu, Fuquan Jia, Tingting Xiao, Haiyan Su, Jiao Xu, Haixu Wang, Pan Wu, Ying Zhang, Na Jiang
In this study, a pilot scale anaerobic membrane bioreactor (AnMBR) was operated for 80 days to treat pharmaceutical wastewater containing m-cresol (MC) and iso-propyl alcohol (IPA). The aim of the study is to investigate the performance and methane fermentation characteristics of AnMBR at different hydraulic retention time (HRT) (48, 36, 24, 18 and 12 h). The average total removal efficiencies of MC and IPA were 95%, 96% during the 80 days, which demonstrated that the AnMBR system performed well in the MC and IPA removal...
May 11, 2018: Chemosphere
https://www.readbyqxmd.com/read/29792957/high-activity-production-of-xylanase-by-pichia-stipitis-purification-characterization-kinetic-evaluation-and-xylooligosaccharides-production
#2
Changhe Ding, Mengxing Li, Yuqi Hu
As an industrially important biological macromolecule, xylanase hydrolyzes xylan to produce xylooligosaccarides (XOS). XOS, with a degree of polymerization (DP) 2 to 4, are important prebiotics used as food ingredients. In this study, xylanase (5536 U/g substrate) was produced by Pichia stipitis using corncob and wheat bran mixture under solid state fermentation. Crude xylanase were purified and biochemically characterized. XOS hydrolyzed by crude and purified xylanases were quantified. Molecular weight of the purified enzyme was around 31...
May 21, 2018: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/29792906/four-novel-antibacterial-sesquiterpene-%C3%AE-amino-acid-quaternary-ammonium-hybrids-from-the-mycelium-of-mushroom-stereum-hirsutum
#3
Yuan-Chang Duan, Jun Feng, Na Bai, Guo-Hong Li, Ke-Qin Zhang, Pei-Ji Zhao
The mushroom Stereum hirsutum is parasitized by Tremella aurantia to form a heterogeneous basidiocarp Jin'er, which has been used as food and folk medicine in Chinese society. In present work, the S. hirsutum was fermented in YMG broth, and four novel mixed terpenes, stereumamides A-D (1-4), which are sesquiterpenes combined with α-amino acids to form quaternary ammonium hybrids, were isolated from the Stereum hirsutum FP-91666 and their structures were elucidated by spectroscopic data analysis. Stereumamides A and D showed antibacterial activity against Escherichia coli, Staphylococcus aureus, and Salmonella typhimurium, with the minimum inhibitory concentration (MIC) values of 12...
May 21, 2018: Fitoterapia
https://www.readbyqxmd.com/read/29792702/peniisocoumarins-a-j-isocoumarins-from-penicillium-commune-qqf-3-an-endophytic-fungus-of-the-mangrove-plant-kandelia-candel
#4
Runlin Cai, Yingnan Wu, Senhua Chen, Hui Cui, Zhaoming Liu, Chunyuan Li, Zhigang She
Ten new isocoumarins, named peniisocoumarins A-J (1-9 and 11), along with three known analogues (10, 12, and 13) were obtained from the fermentation of an endophytic fungus, Penicillium commune QQF-3, which was isolated from a fresh fruit of the mangrove plant Kandelia candel. Their structures were elucidated through extensive spectroscopic analysis. The absolute configurations of 1-7 were determined by single-crystal X-ray diffraction and modified Mosher's method, and those of 8, 9, and 11 were assigned on the basis of experimental and calculated electronic circular dichroism data...
May 24, 2018: Journal of Natural Products
https://www.readbyqxmd.com/read/29792588/candida-kantuleensis-sp-nov-a-d-xylose-fermenting-yeast-species-isolated-from-peat-in-a-tropical-peat-swamp-forest
#5
Sukanya Nitiyon, Pannida Khunnamwong, Noppon Lertwattanasakul, Savitree Limtong
Three strains (DMKU-XE11T , DMKU-XE15 and DMKU-XE20) representing a single novel anamorphic and d-xylose-fermenting yeast species were obtained from three peat samples collected from Khan Thulee peat swamp forest in Surat Thani province, Thailand. The strains differed from each other by one to two nucleotide substitutions in the sequences of the D1/D2 region of the large subunit (LSU) rRNA gene and zero to one nucleotide substitution in the internal transcribed spacer (ITS) region. Phylogenetic analysis based on the combined sequences of the ITS and the D1/D2 regions showed that the three strains represented a single Candida species that was distinct from the other related species in the Lodderomyces/Candida albicans clade...
May 24, 2018: International Journal of Systematic and Evolutionary Microbiology
https://www.readbyqxmd.com/read/29792356/isochromanes-from-aspergillus-fumigatus-an-endophytic-fungus-from-cordyceps-sinensis
#6
Xiao-Hua Li, Xue-Hua Han, Ling-Ling Qin, Jun-Lin He, Zhi-Xing Cao, Yu-Cheng Gu, Da-Le Guo, Yun Deng
Four previously undescribed isochromanes were isolated from the fermentation broth of an endophytic fungus Aspergillus fumigatus, which was obtained from the fruiting body of Cordyceps sinensis. Their structures were elucidated through extensive spectroscopic analyses. One racemic isochromane was further purified by chiral HPLC to yield a pair of enantiomers and their absolute configurations were determined by quantum chemical ECD calculations. These isolated compounds were evaluated for cytotoxicity against two cell lines (MV4-11 and MDA-ME-231) and the result showed that compounds 1a and 2 exhibited moderate growth inhibition against MV4-11 cell line...
May 24, 2018: Natural Product Research
https://www.readbyqxmd.com/read/29791772/characterization-culture-medium-optimization-and-antioxidant-activity-of-an-endophytic-vitexin-producing-fungus-dichotomopilus-funicola-y3-from-pigeon-pea-cajanus-cajan-l-millsp
#7
C B Gu, H Ma, W J Ning, L L Niu, H Y Han, X H Yuan, Y J Fu
AIMS: The aim of this study was to characterize a fungal endophyte Y3 from pigeon pea (Cajanus cajan [L.] Millsp), as a novel producer of vitexin, and its culture medium optimization and antioxidant activity. METHODS AND RESULTS: The endophyte from the leaves of pigeon pea was identified as Dichotomopilus funicola by the morphological and molecular characteristics. The most important medium variables affecting vitexin production in liquid culture of D. funicola Y3 were screened by Plackett-Burman design, and three culture medium constituents (i...
May 23, 2018: Journal of Applied Microbiology
https://www.readbyqxmd.com/read/29791447/development-of-an-rp-uhplc-pda-method-for-quantification-of-free-gossypol-in-cottonseed-cake-and-fungal-treated-cottonseed-cake
#8
Aparecido Almeida Conceição, Clemente Batista Soares Neto, José Antônio de Aquino Ribeiro, Felix Gonçalves de Siqueira, Robert Neil Gerard Miller, Simone Mendonça
Cottonseed cake biomass, which is a residue of oil extraction, is potentially appropriate for use as animal feed, given the high mineral, fibre and protein content. The presence of free gossypol, however, a toxic pigment in the glands of the cotton plant, limits use of this biomass for monogastric livestock. A promising method to detoxify cottonseed cake relies on fermentation by fungi, which can eliminate up to 100% of gossypol. In order to quantify trace levels of free gossypol in different cotton materials, including cottonseed cake treated with macrofungi, a simple and rapid chromatographic detection method was developed and validated...
2018: PloS One
https://www.readbyqxmd.com/read/29790749/anti-inflammatory-activity-of-8-hydroxydaidzein-in-lps-stimulated-bv2-microglial-cells-via-activation-of-nrf2-antioxidant-and-attenuation-of-akt-nf-%C3%AE%C2%BAb-inflammatory-signaling-pathways-as-well-as-inhibition-of-cox-2-activity
#9
Pei-Shan Wu, Hsiou-Yu Ding, Jui-Hung Yen, Shu-Fen Chen, Kuan-Han Lee, Ming-Jiuan Wu
It was demonstrated that isoflavones can cross the blood-brain barrier, making them desirable candidate agents for the prevention of neurological symptoms. 8-Hydroxydaidzein (8-OHD, 4',7,8-trihydoxyisoflavone) is an isoflavone found only in fermented soy food. Current results showed that 8-OHD inhibited LPS-stimulated production of nitric oxide (NO) and proinflammatory cytokines, such as tumor necrosis factor (TNF)-α and interleukin (IL)-6, by inhibiting gene expression in BV2 microglial cells. Moreover, 8-OHD markedly quenched reactive oxygen species (ROS) and activated NF-E2-related factor 2 (Nrf2) so as to upregulate expression of Phase II enzymes, including heme oxygenase (HO)-1, NAD(P)H quinone dehydrogenase 1 (NQO1), and the modifier subunit of glutamate cysteine ligase (GCLM)...
May 23, 2018: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/29790743/correction-to-identification-of-different-bile-species-and-fermentation-times-of-bile-arisaema-based-on-an-intelligent-electronic-nose-and-least-squares-support-vector-machine
#10
Chaoqun Tan, Dashuai Xie, Yujie Liu, Chunjie Wu, Chuanbiao Wen, Xiwei Huang, Jinhong Guo
No abstract text is available yet for this article.
May 23, 2018: Analytical Chemistry
https://www.readbyqxmd.com/read/29790498/rooibos-tea-extracts-inhibit-osteoclast-formation-and-activity-through-the-attenuation-of-nf-%C3%AE%C2%BAb-activity-in-raw264-7-murine-macrophages
#11
Shaakirah Moosa, Abe E Kasonga, Vishwa Deepak, Sumari Marais, Innocentia B Magoshi, Megan J Bester, Marlena C Kruger, Magdalena Coetzee
Rooibos tea is a naturally sweet and aromatic tea that is native to the Western Cape province of South Africa. Rooibos is usually fermented to produce the traditional reddish brown colour and has been found to have numerous health benefits. These include beneficial effects on osteoblasts; however, its effects on osteoclast formation and activity are unknown. Osteoclasts are large, multinucleated cells responsible for bone resorption. Binding of RANKL to its receptor on osteoclast precursors triggers the NF-κB signalling pathway leading to the formation of osteoclasts...
May 23, 2018: Food & Function
https://www.readbyqxmd.com/read/29789978/diauxic-growth-of-clostridium-acetobutylicum-atcc-824-when-grown-on-mixtures-of-glucose-and-cellobiose
#12
Felipe Buendia-Kandia, Emmanuel Rondags, Xavier Framboisier, Guillain Mauviel, Anthony Dufour, Emmanuel Guedon
Clostridium acetobutylicum, a promising organism for biomass transformation, has the capacity to utilize a wide variety of carbon sources. During pre-treatments of (ligno) cellulose through thermic and/or enzymatic processes, complex mixtures of oligo saccharides with beta 1,4-glycosidic bonds can be produced. In this paper, the capability of C. acetobutylicum to ferment glucose and cellobiose, alone and in mixtures was studied. Kinetic studies indicated that a diauxic growth occurs when both glucose and cellobiose are present in the medium...
May 22, 2018: AMB Express
https://www.readbyqxmd.com/read/29789929/mechanistic-simulation-of-batch-acetone-butanol-ethanol-abe-fermentation-with-in-situ-gas-stripping-using-aspen-plus%C3%A2
#13
Kwabena Darkwah, Sue E Nokes, Jeffrey R Seay, Barbara L Knutson
Process simulations of batch fermentations with in situ product separation traditionally decouple these interdependent steps by simulating a separate "steady state" continuous fermentation and separation units. In this study, an integrated batch fermentation and separation process was simulated for a model system of acetone-butanol-ethanol (ABE) fermentation with in situ gas stripping, such that the fermentation kinetics are linked in real-time to the gas stripping process. A time-dependent cell growth, substrate utilization, and product production is translated to an Aspen Plus batch reactor...
May 22, 2018: Bioprocess and Biosystems Engineering
https://www.readbyqxmd.com/read/29789757/locally-produced-lactic-acid-bacteria-for-pathogen-inactivation-and-odor-control-in-fecal-sludge
#14
Emmanuel Alepu Odey, Zifu Li, Xiaoqin Zhou, Yichang Yan
Providing safe fecal sludge (FS) sanitation has remained an important goal of global communities because of the high risks imposed on human health of the exposure to un-sanitized FS. This study used lactic acid fermentation as a pre-treatment technology to evaluate the sanitization effect of lactic acid bacteria (LAB) on FS. A combination of fermented rice flour and brown sugar was used as the medium to prepare LAB, and fecal coliforms were used as the indicator organisms. The addition of a LAB suspension grown in fermented rice flour and brown sugar to FS was studied to evaluate the survival of fecal coliforms...
May 20, 2018: Journal of Cleaner Production
https://www.readbyqxmd.com/read/29789435/molecular-mechanisms-preventing-senescence-in-response-to-prolonged-darkness-in-a-desiccation-tolerant-plant
#15
Meriem Durgud, Saurabh Gupta, Ivan Ivanov, Amin Omidbakhshfard, Maria Benina, Saleh Alseekh, Nikola Staykov, Mareike Hauenstein, Paul Dijkwel, Stefan Hörtensteiner, Valentina Toneva, Yariv Brotman, Alisdair R Fernie, Bernd Mueller-Roeber, Tsanko Gechev
The desiccation-tolerant plant Haberlea rhodopensis can withstand months of darkness without any visible senescence. Here, we investigated the molecular mechanisms of this adaptation to prolonged (30 days) darkness and subsequent return to light. H. rhodopensis plants remained green and viable throughout the dark treatment. Transcriptomic analysis revealed that darkness regulated several transcription factor (TF) genes. Stress- and autophagy-related TFs such as ERF8, HSFA2b, RD26, TGA1, and WRKY33 were upregulated, while chloroplast- and flowering-related TFs such as ATH1, COL2, COL4, RL1, and PTAC7 were repressed...
May 22, 2018: Plant Physiology
https://www.readbyqxmd.com/read/29789163/biodegradation-of-resin-dentin-interfaces-is-dependent-on-the-restorative-material-mode-of-adhesion-esterase-or-mmp-inhibition
#16
Bo Huang, Dennis G Cvitkovitch, J Paul Santerre, Yoav Finer
OBJECTIVE: To measure the effect of simulated human salivary esterases (SHSE) and metalloproteinases (MMP) inhibition on the integrity of restoration-tooth interfaces made from traditional or polyacid-modified resin composites bonded to human dentin by either total-etch or self-etch adhesives. METHODS: Resin-dentin specimens, made from traditional (Z250) or polyacid-modified (Dyract-eXtra) composites were bonded to human dentin using total-etch (TE-Scotchbond) or self-etch (SE-EasyBond) adhesives...
May 19, 2018: Dental Materials: Official Publication of the Academy of Dental Materials
https://www.readbyqxmd.com/read/29788433/metabolic-footprinting-of-fermented-milk-consumption-in-serum-of-healthy-men
#17
Grégory Pimentel, Kathryn J Burton, Ueli von Ah, Ueli Bütikofer, François P Pralong, Nathalie Vionnet, Reto Portmann, Guy Vergères
Background: Fermentation is a widely used method of natural food preservation that has consequences on the nutritional value of the transformed food. Fermented dairy products are increasingly investigated in view of their ability to exert health benefits beyond their nutritional qualities. Objective: To explore the mechanisms underpinning the health benefits of fermented dairy intake, the present study followed the effects of milk fermentation, from changes in the product metabolome to consequences on the human serum metabolome after its ingestion...
May 21, 2018: Journal of Nutrition
https://www.readbyqxmd.com/read/29788095/effects-of-maturity-at-harvest-on-the-nutritive-value-and-ruminal-digestion-of-eragrostis-tef-cv-moxie-when-fed-to-beef-cattle
#18
J R Vinyard, J B Hall, J E Sprinkle, G E Chibisa
Teff (Eragrostis tef cv. Moxie), a warm-season annual grass, could be an excellent forage for beef cattle. However, there is limited information on its nutritive value to cattle when harvested at different stages of maturity. Thus, the objective of this research was to determine the effect of feeding teff hay harvested at the boot (BT), early-heading (EH), or late-heading (LH) stages of maturity on nutrient intake, ruminal fermentation characteristics, omasal nutrient flow, and N utilization in beef cattle...
May 18, 2018: Journal of Animal Science
https://www.readbyqxmd.com/read/29788060/yeast-mitochondria-an-overview-of-mitochondrial-biology-and-the-potential-of-mitochondrial-systems-biology
#19
Carl Malina, Christer Larsson, Jens Nielsen
Mitochondria are dynamic organelles of endosymbiotic origin that are essential components of eukaryal cells. They contain their own genetic machinery, have multicopy genomes and like their bacterial ancestors they consist of two membranes. However, the majority of the ancestral genome has been lost or transferred to the nuclear genome of the host, preserving only a core set of genes involved in oxidative phosphorylation. Mitochondria perform numerous biological tasks ranging from bioenergetics to production of protein co-factors, including heme and iron-sulfur clusters...
August 1, 2018: FEMS Yeast Research
https://www.readbyqxmd.com/read/29786847/assessment-of-antibiotic-susceptibility-within-lactic-acid-bacteria-and-coagulase-negative-staphylococci-isolated-from-hunan-smoked-pork-a-naturally-fermented-meat-product-in-china
#20
Jing Wang, Xinyuan Wei, Mingtao Fan
The aim of this study was to evaluate the antibiotic susceptibility of lactic acid bacteria (LAB) and coagulase-negative staphylococci (CNS) strains isolated from naturally fermented smoked pork produced in Hunan, China. A total of 48 strains were isolated by selective medium and identified at the species level by 16S rRNA gene sequencing as follows: Staphylococcus carnosus (23), Lactobacillus plantarum (12), Lactobacillus brevis (10), Lactobacillus sakei (1), Weissella confusa (1), and Weissella cibaria (1)...
May 22, 2018: Journal of Food Science
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