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https://www.readbyqxmd.com/read/28531658/co-plantation-of-aquatic-macrophytes-typha-angustifolia-and-paspalum-scrobiculatum-for-effective-treatment-of-textile-industry-effluent
#1
Vishal V Chandanshive, Niraj R Rane, Asif S Tamboli, Avinash R Gholave, Rahul V Khandare, Sanjay P Govindwar
Field treatment of textile industry effluent was carried out in constructed drenches (91.4m×1.2m×0.6m; 65.8m(3)) planted independently with Typha angustifolia, Paspalum scrobiculatum and their co-plantation (consortium-TP). The in situ treatment of effluent by T. angustifolia, P. scrobiculatum and consortium-TP was found to decrease ADMI color value by 62, 59 and 76%, COD by 65, 63 and 70%, BOD by 68, 63 and 75%, TDS by 45, 39 and 57%, and TSS by 35, 31 and 47%, respectively within 96h. Heavy metals such as arsenic, cadmium, chromium and lead were also removed up to 28-77% after phytoremediation...
May 12, 2017: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/28529543/pilot-scale-steam-explosion-pretreatment-with-2-naphthol-to-overcome-high-softwood-recalcitrance
#2
Thomas Pielhop, Janick Amgarten, Michael H Studer, Philipp Rudolf von Rohr
BACKGROUND: Steam explosion pretreatment has been examined in many studies for enhancing the enzymatic digestibility of lignocellulosic biomass and is currently the most common pretreatment method in commercial biorefineries. It is however not effective for overcoming the extremely high recalcitrance of softwood to biochemical conversion. Recent fundamental research in small-scale liquid hot water pretreatment has shown, though, that the addition of a carbocation scavenger like 2-naphthol can prevent lignin repolymerization and thus enhance the enzymatic digestibility of softwood cellulose...
2017: Biotechnology for Biofuels
https://www.readbyqxmd.com/read/28529519/genome-wide-identification-of-sorghum-bicolor-laccases-reveals-potential-targets-for-lignin-modification
#3
Jinhui Wang, Juanjuan Feng, Weitao Jia, Pengxiang Fan, Hexigeduleng Bao, Shizhong Li, Yinxin Li
Laccase is a key enzyme in plant lignin biosynthesis as it catalyzes the final step of monolignols polymerization. Sweet sorghum [Sorghum bicolor (L.) Moench] is considered as an ideal feedstock for ethanol production, but lignin greatly limits the production efficiency. No comprehensive analysis on laccase has ever been conducted in S. bicolor, although it appears as the most promising target for engineering lignocellulosic feedstock. The aim of our work is to systematically characterize S. bicolor laccase gene family and to identify the lignin-specific candidates...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28528952/an-overview-of-natural-renewable-bio-polymer-lignin-towards-nano-and-biotechnological-applications
#4
REVIEW
Selvaraj Mohana Roopan
Lignin were said to be major bio-polymer next to cellulose which is an abundant biopolymer. This type of lignin was mostly isolated from woods which were named after their physical, morphological appearances and majorly on extracting sources. Still now there are very few reports on isolation, identification of pure lignin and isolating pathways are also not well defined. Molecular weight of lignin varies from thousands to ten thousands which are not explored accurately. Even-though lignins were surrounded by these many hurdles it has various application studies which were studied and reported...
May 18, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28528626/colloid-particle-formulations-for-antimicrobial-applications
#5
REVIEW
Ahmed F Halbus, Tommy S Horozov, Vesselin N Paunov
Colloidal particles are being extensively studied in various antimicrobial applications due to their small size to volume ratio and ability to exhibit a wide spectrum of antibacterial, antifungal, antialgal and antiviral action. The present review focuses on various nanoparticles (NPs) of inorganic, organic and hybrid materials, and discusses some of the methods for their preparation as well as mechanisms of their antimicrobial action. We consider the antimicrobial applications of metal oxide nanoparticles (ZnO, MgO, CuO, Cu2O, Al2O3, TiO2, CeO2 and Y2O3), metal nanoparticles (NPs), such as copper, silver and gold, metal hydroxide NPs such as Mg(OH)2 as well as hybrid NPs made from biodegradable materials, such as chitosan, lignin and dextran, loaded with other antimicrobial agents...
May 12, 2017: Advances in Colloid and Interface Science
https://www.readbyqxmd.com/read/28528390/colonization-by-nitrogen-fixing-frankia-bacteria-causes-short-term-increases-in-herbivore-susceptibility-in-red-alder-alnus-rubra-seedlings
#6
Daniel J Ballhorn, Jacob D Elias, M A Balkan, Rachel F Fordyce, Peter G Kennedy
Carbon allocation demands from root-nodulating nitrogen-fixing bacteria (NFB) can modulate the host plant's chemical phenotype, with strong bottom-up effects on herbivores. In contrast to well-studied rhizobia, the effects of other important NFB on plant chemistry and herbivory are much less understood. Here, combining field surveys in the Oregon Coast Range, USA with laboratory experiments, we analyzed how N2-fixing Frankia bacteria influenced plant growth, chemistry, and herbivory on Alnus rubra (red alder) seedlings...
May 20, 2017: Oecologia
https://www.readbyqxmd.com/read/28528383/pretreatment-of-hardwood-and-miscanthus-with-trametes-versicolor-for-bioenergy-conversion-and-densification-strategies
#7
Ryan M Kalinoski, Hector D Flores, Sunil Thapa, Erin R Tuegel, Michael A Bilek, Evelin Y Reyes-Mendez, Michael J West, Tim J Dumonceaux, Thomas Canam
The pretreatment of plant biomass negatively impacts the economics of many bioenergy and bioproduct processes due to the thermochemical requirements for deconstruction of lignocelluluose. An effective strategy to reduce these severity requirements is to pretreat the biomass with white-rot fungi, such as Trametes versicolor, which have the innate ability to deconstruct lignocellulose with a suite of specialized enzymes. In the present study, the effects of 12 weeks of pretreatment with a wild-type strain (52J) and a cellobiose dehydrogenase-deficient strain (m4D) of T...
May 20, 2017: Applied Biochemistry and Biotechnology
https://www.readbyqxmd.com/read/28527803/using-brown-midrib-6-dwarf-forage-sorghum-silage-and-fall-grown-oat-silage-in-lactating-dairy-cow-rations
#8
M T Harper, J Oh, F Giallongo, J C Lopes, G W Roth, A N Hristov
Double cropping and increasing crop diversity could improve dairy farm economic and environmental sustainability. In this experiment, corn silage was partially replaced with 2 alternative forages, brown midrib-6 brachytic dwarf forage sorghum (Sorghum bicolor) or fall-grown oat (Avena sativa) silage, in the diet of lactating dairy cows. We investigated the effect on dry matter (DM) intake, milk yield (MY), milk components and fatty acid profile, apparent total-tract nutrient digestibility, N utilization, enteric methane emissions, and income over feed cost...
May 17, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28527740/reductions-of-plant-cover-induced-by-sheep-grazing-change-the-above-belowground-partition-and-chemistry-of-organic-c-stocks-in-arid-rangelands-of-patagonian-monte-argentina
#9
C Larreguy, A L Carrera, M B Bertiller
The objective of this study was to estimate the size and chemical quality of the total organic C stock and its partition between above-belowground plant parts and soil at sites with different plant cover induced by sheep grazing in the arid Patagonian Monte. This study was conducted at six representative sites with increasing signs of canopy disturbance attributed to grazing pressure. We used faeces density as a proxy of grazing pressure at each site. We assessed the total plant cover, shrub and perennial grass cover, total standing aboveground biomass (AGB), litter mass and belowground biomass (BGB) at each site...
May 18, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28525712/engineering-hydrogen-bonding-interaction-and-charge-separation-in-bio-polymers-for-green-lubrication
#10
Liwen Mu, Yijun Shi, Jing Hua, Wei Zhuang, Jiahua Zhu
Synthetic additives are widely used in lubricants nowadays to upgrade lubrication properties. The potential of integrating sustainable components in modern lubricants has rarely been studied yet. In this work, two sustainable resources lignin and gelatin have been synergistically incorporated into ethylene glycol (EG) and their tribological properties were systematically investigated. The abundant hydrogen bonding sites in lignin and gelatin as well as their inter-chain interaction via hydrogen bonding play the dominating roles in tuning the physicochemical properties of the mixture and improving lubricating properties...
May 19, 2017: Journal of Physical Chemistry. B
https://www.readbyqxmd.com/read/28524800/swelling-mechanism-of-urea-crosslinked-starch-lignin-films-in-water
#11
Ariyanti Sarwono, Zakaria Man, M Azmi Bustam, Duvvuri Subbarao, Alamin Idris, Nawshad Muhammad, Amir Sada Khan, Zahoor Ullah
Coating fertilizer particles with thin films is a possibility to control the fertilizer release rates. It is observed that novel urea crosslinked starch-lignin composite thin films, prepared by solution casting, swell on coming into contact with water due to increase in volume by water uptake diffusion. The effect of lignin content, varied from 0% to 20% in steps of 5% and three different temperatures (25°C, 35°C and 45°C) on swelling of the film was investigated. By gravimetric analysis, the equilibrium water uptake and diffusion coefficient decrease with lignin content indicating that the addition of lignin increases the hydrophobicity of the films...
May 19, 2017: Environmental Technology
https://www.readbyqxmd.com/read/28523820/organocatalytic-chemoselective-primary-alcohol-oxidation-and-subsequent-cleavage-of-lignin-model-compounds-and-lignin
#12
Saumya Dabral, Jose Hernández, Paul Kamer, Carsten Bolm
A one-pot two-step degradation of lignin β-O-4 model compounds initiated by preferred oxidation of the primary over the secondary hydroxyl groups with a TEMPO/DAIB system has been developed. The oxidised products are then cleaved by proline-catalysed retro-aldol reactions. This degradation methodology produces simple aromatics in good yields from lignin model compounds at room temperature with an extension to organosolv beechwood lignin L1 resulting in known cleavage products.
May 18, 2017: ChemSusChem
https://www.readbyqxmd.com/read/28522458/a-key-role-for-apoplastic-h2o2-in-norway-spruce-phenolic-metabolism
#13
Teresa Laitinen, Kris Morreel, Nicolas Delhomme, Adrien Gauthier, Bastian Schiffthaler, Kaloian Nickolov, Günter Brader, Kean-Jin Lim, Teemu H Teeri, Nathaniel R Street, Wout A Boerjan, Anna Karkonen
Apoplastic events such as monolignol oxidation and lignin polymerization are difficult to study in intact trees. To investigate the role of apoplastic H2O2 in gymnosperm phenolic metabolism, an extracellular lignin-forming cell culture of Norway spruce (Picea abies) was used as a research model. Scavenging of apoplastic H2O2 by KI repressed lignin formation, in line with peroxidases activating monolignols for lignin polymerization. Time course analyses coupled to candidate substrate product pair network propagation revealed differential accumulation of low-molecular-weight phenolics, including (glycosylated) oligolignols, (glycosylated) flavonoids and proanthocyanidins, in lignin-forming and H2O2-scavenging cultures, and supported that monolignols are oxidatively coupled not only in the cell wall, but also in the cytoplasm where they are coupled to other monolignols and proanthocyanidins...
May 18, 2017: Plant Physiology
https://www.readbyqxmd.com/read/28517113/differences-between-two-strains-of-ceriporiopsis-subvermispora-on-improving-the-nutritive-value-of-wheat-straw-for-ruminants
#14
Nazri Nayan, Anton S M Sonnenberg, Wouter H Hendriks, John W Cone
AIM: The present study evaluated differences between two strains of Ceriporiopsis subvermispora on improving the nutritive value and in vitro degradability of wheat straw. METHODS AND RESULTS: Wheat straw was treated with the fungi for 7 weeks. Weekly samples were analyzed for ergosterol content, in vitro gas production (IVGP), chemical composition and lignin degrading enzyme activity. Ergosterol data showed CS1 to have a faster initial growth than CS2 and reaching a stationary phase after 3 weeks...
May 18, 2017: Journal of Applied Microbiology
https://www.readbyqxmd.com/read/28516417/microbial-lipid-production-from-enzymatic-hydrolysate-of-pecan-nutshell-pretreated-by-combined-pretreatment
#15
Lizhen Qin, Hanyu Qian, Yucai He
Biodiesel is a fuel composed of monoalkyl esters of long-chain fatty acids derived from renewable biomass sources. In this study, biomass waste pecan nutshell (PS) was attempted to be converted into microbial oil. For effective utilization of PS, sequential pretreatment with ethylene glycol-H2SO4-water (78:2:20, wt:wt:wt) at 130 °C for 30 min and aqueous ammonia (25 wt%) at 50 °C for 24 h was used to enhance its enzymatic saccharification. Significant linear correlation was obtained about delignification-saccharification (R (2) = 0...
May 17, 2017: Applied Biochemistry and Biotechnology
https://www.readbyqxmd.com/read/28515786/evaluation-of-biomass-quality-in-short-rotation-bamboo-phyllostachys-pubescens-for-bioenergy-products
#16
Seung Gon Wi, Dae-Seok Lee, Quynh Anh Nguyen, Hyeun-Jong Bae
BACKGROUND: In order to improve the availability of biomass, the concept of growing high yield biomass with short rotations and intensive culture has been introduced. Bamboo has become a feedstock of potential interest for future energy production due to its high productivity and short rotation time. The growth age of biomass is an important factor affecting the efficiency of bioconversion and pretreatment for bioenergy production. In this regard, more information is required on the morphology and chemical composition of bamboo for short-rotation biomass production...
2017: Biotechnology for Biofuels
https://www.readbyqxmd.com/read/28515461/variation-of-nanostructures-molecular-interactions-and-anisotropic-elastic-moduli-of-lignocellulosic-cell-walls-with-moisture
#17
S Youssefian, J E Jakes, N Rahbar
A combination of experimental, theoretical and numerical studies is used to investigate the variation of elastic moduli of lignocellulosic (bamboo) fiber cell walls with moisture content (MC). Our Nanoindentation results show that the longitudinal elastic modulus initially increased to a maximum value at about 3% MC and then decreased linearly with increasing MC. In contrast, the transverse moduli decrease linearly with MC. We showed that amorphous materials in cell walls have key roles in the variation of elastic modulus with increasing MC...
May 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28514158/preparation-of-carbon-dots-for-cellular-imaging-by-molecular-aggregation-of-cellulolytic-enzyme-lignin
#18
Na Niu, Zhuoming Ma, Fei He, Shujun Li, Jian Li, Shou-Xin Liu, Piaoping Yang
Carbon dots, which are less than 10 nm in diameter, have been widely investigated because of their unique luminescence properties and potential for use in bioimaging. In the present work, natural carbon dots (L-CDs) were obtained by molecular aggregation, using ethanol-extracted cellulolytic enzyme lignin. The whole process for the preparation of L-CDs was green and simple to operate and did not use toxic chemical reagents or harsh conditions. The newly prepared L-CDs emitted multicolour photoluminescence following one- and two-photon excitation...
May 17, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/28512593/electrochemical-determination-of-caffeine-content-in-ethiopian-coffee-samples-using-lignin-modified-glassy-carbon-electrode
#19
Meareg Amare, Senait Aklog
Lignin film was deposited at the surface of glassy carbon electrode potentiostatically. In contrast to the unmodified glassy carbon electrode, an oxidative peak with an improved current and overpotential for caffeine at modified electrode showed catalytic activity of the modifier towards oxidation of caffeine. Linear dependence of peak current on caffeine concentration in the range 6 × 10(-6) to 100 × 10(-6) mol L(-1) with determination coefficient and method detection limit (LoD = 3 s/slope) of 0.99925 and 8...
2017: Journal of Analytical Methods in Chemistry
https://www.readbyqxmd.com/read/28506668/characterization-of-selected-municipal-solid-waste-components-to-estimate-their-biodegradability
#20
R Bayard, H Benbelkacem, R Gourdon, P Buffière
Biological treatments of Residual Municipal Solid Waste (RMSW) allow to divert biodegradable materials from landfilling and recover valuable alternative resources. The biodegradability of the waste components needs however to be assessed in order to design the bioprocesses properly. The present study investigated complementary approaches to aerobic and anaerobic biotests for a more rapid evaluation. A representative sample of residual MSW was collected from a Mechanical Biological Treatment (MBT) plant and sorted out into 13 fractions according to the French standard procedure MODECOM™...
May 12, 2017: Journal of Environmental Management
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