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https://www.readbyqxmd.com/read/29763699/structural-elucidation-and-antioxidant-activity-of-lignin-isolated-from-rice-straw-and-alkali%C3%A2-oxygen-black-liquor
#1
Bo Jiang, Yu Zhang, Lihui Gu, Wenjuan Wu, Huifang Zhao, Yongcan Jin
Alkali‑oxygen cooking of lignocellulose offers lignin many structural properties and bioactivities for biorefinery. In this work, milled wood lignin (MWL) and alkali‑oxygen lignin (AOL) were isolated from rice straw and alkali‑oxygen black liquor, respectively. The lignin structure was characterized by spectroscopy and wet chemistry. Antioxidant activity of lignins was assessed by DPPH·and ABTS scavenging ability assay. Results showed the oxidization and condensation of lignin occurred during alkali‑oxygen cooking...
May 12, 2018: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/29761641/uhplc-ms-ms-method-for-determining-dinotefuran-and-its-main-metabolites-in-samples-of-plants-animal-derived-foods-soil-and-water
#2
Ying Zhang, Xiaohu Wu, Tingting Duan, Jun Xu, Fengshou Dong, Xingang Liu, Xiaogang Li, Pengqiang Du, Yongquan Zheng
An ultra high performance liquid chromatography with tandem triple quadrupole mass spectrometry residue method for the quantification and identification of dinotefuran and its main metabolites 1-methyl-3-(tetrahydro-3-furylmethyl) urea and 1-methyl-3-(tetrahydro-3-furylmethyl) guanidine in fruit (watermelon), vegetable (cucumber), cereal (rice), animal-derived foods (milk, egg, and pork), soil and water was developed and validated. The samples were extracted with acetonitrile containing 15% v/v acetic acid and purified with dispersive solid-phase extraction with octadecylsilane, primary secondary amine, graphitized carbon black, or zirconia-coated silica prior to analysis...
May 15, 2018: Journal of Separation Science
https://www.readbyqxmd.com/read/29738543/analysis-of-air-pollution-over-hanoi-vietnam-using-multi-satellite-and-merra-reanalysis-datasets
#3
Kristofer Lasko, Krishna Prasad Vadrevu, Thanh Thi Nhat Nguyen
Air pollution is one of the major environmental concerns in Vietnam. In this study, we assess the current status of air pollution over Hanoi, Vietnam using multiple different satellite datasets and weather information, and assess the potential to capture rice residue burning emissions with satellite data in a cloud-covered region. We used a timeseries of Ozone Monitoring Instrument (OMI) Ultraviolet Aerosol Index (UVAI) satellite data to characterize absorbing aerosols related to biomass burning. We also tested a timeseries of 3-hourly MERRA-2 reanalysis Black Carbon (BC) concentration data for 5 years from 2012-2016 and explored pollution trends over time...
2018: PloS One
https://www.readbyqxmd.com/read/29735954/design-and-synthesis-of-lactams-derived-from-mucochloric-and-mucobromic-acids-as-pseudomonas-aeruginosa-quorum-sensing-inhibitors
#4
Basmah Almohaywi, Aditi Taunk, Daniel S Wenholz, Shashidhar Nizalapur, Nripendra N Biswas, Kitty K K Ho, Scott A Rice, George Iskander, David StC Black, Renate Griffith, Naresh Kumar
Bacterial infections, particularly hospital-acquired infections caused by Pseudomonas aeruginosa , have become a global threat with a high mortality rate. Gram-negative bacteria including P. aeruginosa employ N -acyl homoserine lactones (AHLs) as chemical signals to regulate the expression of pathogenic phenotypes through a mechanism called quorum sensing (QS). Recently, strategies targeting bacterial behaviour or QS have received great attention due to their ability to disarm rather than kill pathogenic bacteria, which lowers the evolutionary burden on bacteria and the risk of resistance development...
May 7, 2018: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29731679/black-rice-oryza-sativa-l-poaceae-extract-reduces-hippocampal-neuronal-cell-death-induced-by-transient-global-cerebral-ischemia-in-mice
#5
Sun-Nyoung Hwang, Jae-Cheon Kim, Mohammad Iqbal Hossain Bhuiyan, Joo Youn Kim, Ji Seon Yang, Shin Hee Yoon, Kee Dong Yoon, Seong Yun Kim
Rice is the most commonly consumed grain in the world. Black rice has been suggested to contain various bioactive compounds including anthocyanin antioxidants. There is currently little information about the nutritional benefits of black rice on brain pathology. Here, we investigated the effects of black rice ( Oryza sativa L ., Poaceae) extract (BRE) on the hippocampal neuronal damage induced by ischemic insult. BRE (300 mg/kg) was orally administered to adult male C57BL/6 mice once a day for 21 days. Bilateral common carotid artery occlusion (BCCAO) was performed for 23 min on the 8th day of BRE or vehicle administration...
April 2018: Experimental Neurobiology
https://www.readbyqxmd.com/read/29691532/black-rice-anthocyanin-rich-extract-and-rosmarinic-acid-alone-and-in-combination-protect-against-dss-induced-colitis-in-mice
#6
Lei Zhao, Yali Zhang, Guorong Liu, Shuai Hao, Chengtao Wang, Yong Wang
The aim of this study was to investigate the effect of black rice anthocyanin-rich extract (BRAE) and rosmarinic acid (RA), alone and in combination, on dextran sulfate sodium (DSS)-induced colitis in mice. Results showed that administration of BRAE and RA, alone and in combination, significantly decreased the disease activity index (DAI) and the histological score of colons in DSS-induced colitis mice. Moreover, the administration of BRAE and RA, alone and in combination, not only reduced myeloperoxidase (MPO) and nitric oxide (NO) levels, but also inhibited the expression of pro-inflammatory mediators including interleukin (IL)-6, IL-1β, tumor necrosis factor (TNF)-α, inducible nitric oxide synthase (iNOS) and cyclooxygenase (COX)-2...
April 25, 2018: Food & Function
https://www.readbyqxmd.com/read/29674021/solid-phase-microextraction-method-using-a-novel-polystyrene-oleic-acid-imidazole-polymer-in-micropipette-tip-of-syringe-system-for-speciation-and-determination-of-antimony-in-environmental-and-food-samples
#7
Abdul Haleem Panhwar, Mustafa Tuzen, Baki Hazer, Tasneem Gul Kazi
A simple, rapid and sensitive solid phase microextraction method was used for the speciation of inorganic antimony (Sb) by using a novel synthesized polymeric material in micropipette tip of syringe system. In present methodology, the specie of Sb (III) made hydrophobic complex with diethyl dithiocarbamate (DDTC) at pH 5.5 and subsequently adsorbed on polystyrene oleic acid imidazole polymer (POIP), whereas Sb(V) did not made complex and adsorbed on the polymer, remained in aqueous solutions. The strategy of multivariate was carried out to screen out the different variables and assessed the optimum values of their experimental values for the extraction efficiency of analyte...
July 1, 2018: Talanta
https://www.readbyqxmd.com/read/29605048/racial-and-ethnic-disparities-over-time-in-the-treatment-and-mortality-of-women-with-gynecological-malignancies
#8
J Alejandro Rauh-Hain, Alexander Melamed, Diego Schaps, Amy J Bregar, Ryan Spencer, John O Schorge, Laurel W Rice, Marcela G Del Carmen
OBJECTIVE: To examine temporal trends in treatment and survival among black, Asian, Hispanic, and white women diagnosed with endometrial, ovarian, cervical, and vulvar cancer. METHODS: Using the National Cancer Database (2004-2014), we identified women diagnosed with endometrial, ovarian, cervical, and vulvar cancer. For each disease site, we analyzed race/ethnicity-specific trends in receipt of evidence-based practices. Professional societies' recommendations were used to define these practices...
April 2018: Gynecologic Oncology
https://www.readbyqxmd.com/read/29579967/complexation-of-thermally-denatured-soybean-protein-isolate-with-anthocyanins-and-its-effect-on-the-protein-structure-and-in-vitro-digestibility
#9
Yan Zhang, Si Chen, Baokun Qi, Xiaonan Sui, Lianzhou Jiang
The complexation of anthocyanin-rich black rice extracts (ARBRE) with soybean protein isolate (SPI) heated at 0, 70, 85, and 100 °C and its effect on protein digestibility were studied. The structural changes of SPI during its interaction with ARBRE in all the samples were studied by Fourier transform infrared, circular dichroism, and fluorescence spectroscopy. The secondary structure changes of SPI in all the samples after complexation with ARBRE showed a significant increase in α-helix and a significant decrease in β-sheet contents...
April 2018: Food Research International
https://www.readbyqxmd.com/read/29578575/hybrid-chickadees-are-deficient-in-learning-and-memory
#10
Michael A McQuillan, Timothy C Roth Ii, Alex V Huynh, Amber M Rice
Identifying the phenotypes underlying postzygotic reproductive isolation is crucial for fully understanding the evolution and maintenance of species. One potential postzygotic isolating barrier that has rarely been examined is learning and memory ability in hybrids. Learning and memory are important fitness-related traits, especially in scatter-hoarding species, where accurate retrieval of hoarded food is vital for winter survival. Here, we test the hypothesis that learning and memory ability can act as a postzygotic isolating barrier by comparing these traits among two scatter-hoarding songbird species, black-capped (Poecile atricapillus), Carolina chickadees (Poecile carolinensis), and their naturally occurring hybrids...
March 26, 2018: Evolution; International Journal of Organic Evolution
https://www.readbyqxmd.com/read/29519654/characterization-and-induction-of-phenolic-acid-decarboxylase-from-aspergillus-luchuensis
#11
Mayumi Maeda, Masashi Tokashiki, Midori Tokashiki, Keiko Uechi, Susumu Ito, Toki Taira
Awamori is a traditional distilled liquor in the Ryukyu Islands, made from steamed rice by the action of the black-koji mold Aspergillus luchuensis and awamori yeast Saccharomyces cerevisiae. One of the specific flavors in aged awamori kusu is vanillin, which is derived from ferulic acid (FA) in rice grains. FA is released from the cell wall material in the rice grain by ferulic acid esterase produced by A. luchuensis. Through decarboxylation of FA, 4-vinylguaiacol (4-VG) is produced, which is transferred to the distilled liquor, and converted to vanillin by natural oxidization during the aging process...
March 5, 2018: Journal of Bioscience and Bioengineering
https://www.readbyqxmd.com/read/29514441/anthocyanin-and-proanthocyanidin-contents-antioxidant-activity-and-in-situ-degradability-of-black-and-red-rice-grains
#12
Kenji Hosoda, Hideki Sasahara, Kei Matsushita, Yasuaki Tamura, Makoto Miyaji, Hiroki Matsuyama
Objective: An experiment was conducted to assess the antioxidant contents and activities of colored rice grains and to evaluate their nutritive characteristics in terms of chemical composition and in situ ruminal degradation. Methods: Ten cultivars of colored rice grains (Oryza sativa L.) collected from several areas of Japan were studied, and control rice without pigment, maize, barley, and wheat grains were used as control grains. Their chemical compositions, pigment, polyphenol contents, total antioxidant capacity (TAC), and degradation characteristics were determined...
March 2, 2018: Asian-Australasian Journal of Animal Sciences
https://www.readbyqxmd.com/read/29502941/nuclear-magnetic-resonance-and-gas-chromatography-mass-spectrometry-based-metabolomic-characterization-of-water-soluble-and-volatile-compound-profiles-in-cabbage-vinegar
#13
Satoru Ishihara, Takashi Inaoka, Toshihide Nakamura, Keitarou Kimura, Yasuyo Sekiyama, Satoru Tomita
Non-targeted metabolomic analyses employing nuclear magnetic resonance- and gas chromatography/mass spectrometry-based techniques were applied for an in-depth characterization of cabbage vinegar, an original agricultural product made from cabbage harvested in Tsumagoi, Japan. Water-soluble and volatile metabolite profiles of cabbage vinegar were compared with those of various vinegars: rice vinegar, grain vinegar, apple vinegar, and black vinegar (Japanese kurozu made of brown rice). Principal component analysis (PCA) of the water-soluble metabolites indicated that cabbage vinegars belonged to an isolated class by the contributions of fructose, pyroglutamic acid, choline, and methiin (S-methylcysteine sulfoxide)...
March 1, 2018: Journal of Bioscience and Bioengineering
https://www.readbyqxmd.com/read/29500751/inhibitory-effect-of-japanese-black-vinegar-on-ige-mediated-degranulation-of-rbl-2h3-cells-and-a-murine-model-of-japanese-cedar-pollinosis
#14
Seiji Awane, Kosuke Nishi, Momoko Ishida, Masanobu Nagano, Kazunori Hashiguchi, Akira Fujii, Takuya Sugahara
Japanese black vinegar (JBV) is a traditional vinegar manufactured with steamed unpolished rice. After screening, beneficial effects of JBV on IgE-mediated allergic responses were found. In this study, acetic acid-free JBV was used to evaluate its antiallergic effects. JBV suppressed degranulation of rat basophilic leukemia RBL-2H3 cells in a dose-dependent manner without cytotoxicity. The inhibitory effect of JBV on the degranulation seemed to be caused by the bioactive ingredients other than proteins, because the activity was not affected by heat treatment or protease digestion...
March 2, 2018: Cytotechnology
https://www.readbyqxmd.com/read/29484380/black-rice-oryza-sativa-l-extract-modulates-ultraviolet-induced-expression-of-matrix-metalloproteinases-and-procollagen-in-a-skin-cell-model
#15
Mira Han, Jung-Soo Bae, Jae-Jun Ban, Hee Soon Shin, Dong Hun Lee, Jin Ho Chung
Exposure of the skin to ultraviolet (UV) radiation causes extracellular matrix (ECM) collapse in the dermis, owing to an increase in matrix metalloproteinase (MMP) production in both the epidermis and dermis, and a decrease in type I collagen expression in the dermis. Recently, black rice (Oryza sativa L.) was reported to have a wide range of pharmacological effects in various settings. However, the effects of black rice extract (BRE) on UV‑irradiated skin cells have not yet been characterized. BRE treatment did not affect cell morphology and viability of HaCaT and human dermal fibroblasts (HDF)...
May 2018: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/29465677/patterns-of-sexual-behavior-and-sexually-transmitted-infections-in-young-men-who-have-sex-with-men
#16
Sara A Vasilenko, Cara E Rice, Joshua G Rosenberger
PURPOSE: Young men who have sex with men (YMSM) are at an increased risk for sexually transmitted infections. Recent research has documented the importance of understanding the multidimensional nature of sexual risk behavior; however, little is known about how multidimensional patterns of sexual behavior among MSM may be associated with STIs. METHOD: This study applies latent class analysis to data from a large, HIV- sample of 18-25 year old MSM recruited from social and sexual networking websites (N = 5,965; 76% white, 11% Latino, 5% Black, 4% Asian, 4% other; 74% homosexual, 21% bisexual, 1% heterosexual, 3%, unsure/questioning 1% other) to uncover multidimensional patterns of past-year sexual behaviors, partner factors, and protective behavior and their associations with self-reported STI diagnosis...
November 21, 2017: Sexually Transmitted Diseases
https://www.readbyqxmd.com/read/29462990/exploration-of-rice-husk-compost-as-an-alternate-organic-manure-to-enhance-the-productivity-of-blackgram-in-typic-haplustalf-and-typic-rhodustalf
#17
Subramanium Thiyageshwari, Pandurangan Gayathri, Ramasamy Krishnamoorthy, Rangasamy Anandham, Diby Paul
The present study was aimed at using cellulolytic bacterium Enhydrobacter and fungi Aspergillus sp. for preparing compost from rice husk (RH). Further, the prepared compost was tested for their effect on blackgram growth promotion along with different levels of recommended dose of fertilizer (RDF) in black soil (typic Haplustalf) and red soil (typic Rhodustalf) soil. The results revealed that, inoculation with lignocellulolytic fungus (LCF) Aspergillus sp. @ 2% was considered as the most efficient method of composting within a short period...
February 17, 2018: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/29461660/outcomes-at-7-years-post-transplant-in-black-vs-nonblack-kidney-transplant-recipients-administered-belatacept-or-cyclosporine-in-benefit-and-benefit-ext
#18
Sander Florman, Flavio Vincenti, Antoine Durrbach, Marwan Abouljoud, Barbara Bresnahan, Valter Duro Garcia, Laura Mulloy, Kim Rice, Lionel Rostaing, Carlos Zayas, Kellie Calderon, Ulf Meier-Kriesche, Martin Polinsky, Lingfeng Yang, Jose Medina Pestana, Christian P Larsen
Clinical outcomes are generally worse for black vs nonblack renal allograft recipients. In BENEFIT and BENEFIT-EXT, recipients were randomized to belatacept more intense-based, belatacept less intense-based, or cyclosporine-based immunosuppression. At year 7, belatacept was associated with superior graft survival vs cyclosporine in BENEFIT (recipients of living or standard criteria deceased donor kidneys); belatacept was associated with similar graft survival vs cyclosporine in BENEFIT-EXT (recipients of extended criteria donor kidneys)...
April 2018: Clinical Transplantation
https://www.readbyqxmd.com/read/29455357/phytochemical-constituents-antioxidant-activity-and-antiproliferative-properties-of-black-red-and-brown-rice-bran
#19
Ali Ghasemzadeh, Mohamad Taghi Karbalaii, Hawa Z E Jaafar, Asmah Rahmat
BACKGROUND: In the recent years, the health benefits of the pigmented rice varieties have reported due to the presence of bioactive compounds. In this study, the phytochemical constituents (total phenolic, flavonoid and anthocyanin content) and individual phenolics and flavonoids of the extracts of sixteen genotypes of pigmented rice bran were evaluated using spectrophotometric and ultra-high performance liquid chromatography method. Antioxidative properties of the free and bound fractions were evaluated using nitric oxide and 1,1-diphenyl-2-picrylhydrazyl scavenging assays...
February 17, 2018: Chemistry Central Journal
https://www.readbyqxmd.com/read/29432718/natural-history-of-ground-glass-lesions-among-patients-with-previous-lung-cancer
#20
Jitesh B Shewale, David B Nelson, David C Rice, Boris Sepesi, Wayne L Hofstetter, Reza J Mehran, Ara A Vaporciyan, Garrett L Walsh, Stephen G Swisher, Jack Roth, Mara B Antonoff
BACKGROUND: Among patients with previous lung cancer, the malignant potential of subsequent ground glass opacities (GGOs) on computed tomography (CT) remains unknown, with a lack of consensus regarding surveillance and intervention. We sought to describe the natural history of GGO in patients with a history of lung cancer. METHODS: A retrospective review was performed of 210 patients with a history of lung cancer and ensuing CT evidence of pure or mixed GGOs between 2007 and 2013...
February 9, 2018: Annals of Thoracic Surgery
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