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https://www.readbyqxmd.com/read/29344754/green-and-sustainable-separation-of-natural-products-from-agro-industrial-waste-challenges-potentialities-and-perspectives-on-emerging-approaches
#1
REVIEW
Vânia G Zuin, Luize Z Ramin
New generations of biorefinery combine innovative biomass waste resources from different origins, chemical extraction and/or synthesis of biomaterials, biofuels, and bioenergy via green and sustainable processes. From the very beginning, identifying and evaluating all potentially high value-added chemicals that could be removed from available renewable feedstocks requires robust, efficient, selective, reproducible, and benign analytical approaches. With this in mind, green and sustainable separation of natural products from agro-industrial waste is clearly attractive considering both socio-environmental and economic aspects...
January 17, 2018: Topics in Current Chemistry (Journal)
https://www.readbyqxmd.com/read/29340787/a-profilin-gene-promoter-from-switchgrass-panicum-virgatum-l-directs-strong-and-specific-transgene-expression-to-vascular-bundles-in-rice
#2
Wenzhi Xu, Wusheng Liu, Rongjian Ye, Mitra Mazarei, Debao Huang, Xinquan Zhang, C Neal Stewart
A switchgrass vascular tissue-specific promoter (PvPfn2) and its 5'-end serial deletions drive high levels of vascular bundle transgene expression in transgenic rice. Constitutive promoters are widely used for crop genetic engineering, which can result in multiple off-target effects, including suboptimal growth and epigenetic gene silencing. These problems can be potentially avoided using tissue-specific promoters for targeted transgene expression. One particularly urgent need for targeted cell wall modification in bioenergy crops, such as switchgrass (Panicum virgatum L...
January 17, 2018: Plant Cell Reports
https://www.readbyqxmd.com/read/29330191/thermophilic-alkaline-fermentation-followed-by-mesophilic-anaerobic-digestion-for-efficient-hydrogen-and-methane-production-from-waste-activated-sludge-focusing-on-dynamics-of-bacterial-pathogens-as-revealed-by-the-combination-of-metagenomic-and-qpcr-analysis
#3
Jingjing Wan, Yuhang Jing, Yue Rao, Shicheng Zhang, Gang Luo
Thermophilic alkaline fermentation followed by mesophilic anaerobic digestion (TM) for hydrogen and methane production from waste activated sludge (WAS) was investigated. TM process was also compared to mesophilic alkaline fermentation followed by mesophilic anaerobic digestion (MM) process and one-stage mesophilic anaerobic digestion (M) process. The results showed that both hydrogen yield (74.5 mLH2/gVS) and methane yield (150.7 mLCH4/gVS) in TM process were higher than those (6.7 mLH2/gVS and 127.8 mLCH4/gVS) in MM process...
January 12, 2018: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/29321811/gene-stacking-of-multiple-traits-for-high-yield-of-fermentable-sugars-in-plant-biomass
#4
Aude Aznar, Camille Chalvin, Patrick M Shih, Michael Maimann, Berit Ebert, Devon S Birdseye, Dominique Loqué, Henrik V Scheller
Background: Second-generation biofuels produced from biomass can help to decrease dependency on fossil fuels, bringing about many economic and environmental benefits. To make biomass more suitable for biorefinery use, we need a better understanding of plant cell wall biosynthesis. Increasing the ratio of C6 to C5 sugars in the cell wall and decreasing the lignin content are two important targets in engineering of plants that are more suitable for downstream processing for second-generation biofuel production...
2018: Biotechnology for Biofuels
https://www.readbyqxmd.com/read/29317713/comparison-of-changes-in-mitochondrial-bioenergetics-between-keratinocytes-in-human-external-auditory-canal-skin-and-cholesteatomas-from-normoxia-to-hypoxia
#5
Cheng-Ping Shih, Jen-Tin Lee, Hang-Kang Chen, Yi-Chun Lin, Hsin-Chien Chen, Yuan-Yung Lin, Chao-Yin Kuo, Yu-Ting Chen, Chih-Hung Wang
Cholesteatoma has attracted many studies seeking to uncover its nature and the pathogenesis of related diseases. However, no researchers have explored the mitochondrial bioenergetics of cholesteatoma. The aim of this study was to investigate the energy demand and differential mitochondrial respiration profiles between keratinocytes in external auditory canal (EAC) skin and cholesteatoma samples cultured in normoxic (20% O2) and hypoxic (5% O2) conditions. Enhanced cellular proliferation of both types of keratinocytes was found in hypoxia compared to normoxia...
January 9, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29310841/mixing-seawater-with-a-little-wastewater-to-produce-bioenergy-from-limnetic-algae
#6
Haiyan Pei, Liqun Jiang
Microalgae are considered to be a promising feedstock for biofuel, but expansion of algal lipid production commercially still has a long way to go. Inexhaustible seawater, with a little wastewater added, has great potential to optimize microalga production so that biodiesel production can thrive cost-effectively and sustainably.
January 5, 2018: Trends in Biotechnology
https://www.readbyqxmd.com/read/29302792/mitochondrial-bioenergy-alterations-in-avian-hd11-macrophages-infected-with-infectious-bronchitis-virus
#7
Sergio E L da Silva, Helena L Ferreira, Andrea F Garcia, Felipe E S Silva, Roberto Gameiro, Carolina U F Fabri, Dielson S Vieira, Tereza C Cardoso
To establish an association between mitochondrial dysfunction and apoptosis following infectious bronchitis virus (IBV) infection, HD11 avian macrophage cells were infected with the Massachusetts 41 (M41) strain. Our results show that the M41 strain of IBV induced cytopathic effects followed by the release of new viral particles. Elevated numbers of apoptotic cells were observed at 24, 48 and 72 h post-infection (p.i.). Viral infection was associated with mitochondrial membrane depolarization and reactive oxygen species (ROS) production at all of the examined timepoints p...
January 4, 2018: Archives of Virology
https://www.readbyqxmd.com/read/29291569/influence-of-bioenergy-waste-biochar-on-proton-and-ligand-promoted-release-of-pb-and-cu-in-a-shooting-range-soil
#8
Prasanna Kumarathilaka, Mahtab Ahmad, Indika Herath, Kushani Mahatantila, B C L Athapattu, Jörg Rinklebe, Yong Sik Ok, Adel Usman, Mohammad I Al-Wabel, Adel Abduljabbar, Meththika Vithanage
Presence of organic and inorganic acids influences the release rates of trace metals (TMs) bound in contaminated soil systems. This study aimed to investigate the influence of bioenergy waste biochar, derived from Gliricidia sepium (GBC), on the proton and ligand-induced bioavailability of Pb and Cu in a shooting range soil (17,066mg Pb and 1134mg Cu per kg soil) in the presence of inorganic (sulfuric, nitric, and hydrochloric) and organic acids (acetic, citric, and oxalic). Release rates of Pb and Cu in the shooting range soil were determined under different acid concentrations (0...
December 29, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/29291098/diesel-production-from-lignocellulosic-feed-the-biocrack-process
#9
K Treusch, J Ritzberger, N Schwaiger, P Pucher, M Siebenhofer
The bioCRACK process is a promising technology for the production of second generation biofuels. During this process, biomass is pyrolized in vacuum gas oil and converted into gaseous, liquid and solid products. In cooperation with the Graz University of Technology, the liquid phase pyrolysis process was investigated by BDI - BioEnergy International AG at an industrial pilot plant, fully integrated in the OMV refinery in Vienna/Schwechat. The influence of various biogenous feedstocks and the influence of the temperature on the product distribution in the temperature range of 350°C to 390°C was studied...
November 2017: Royal Society Open Science
https://www.readbyqxmd.com/read/29282406/corrigendum-pectins-endopolygalacturonases-and-bioenergy
#10
Mariana B G Latarullo, Eveline Q P Tavares, Gabriel Padilla, Débora C C Leite, Marcos S Buckeridge
[This corrects the article on p. 1401 in vol. 7, PMID: 27703463.].
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/29282380/biofuels-bioenergy-and-the-bioeconomy-in-north-and-south
#11
Francis X Johnson
No abstract text is available yet for this article.
December 1, 2017: Industrial Biotechnology
https://www.readbyqxmd.com/read/29281982/polyamines-in-the-life-of-arabidopsis-profiling-the-expression-of-s-adenosylmethionine-decarboxylase-samdc-gene-family-during-its-life-cycle
#12
Rajtilak Majumdar, Lin Shao, Swathi A Turlapati, Subhash C Minocha
BACKGROUND: Arabidopsis has 5 paralogs of the S-adenosylmethionine decarboxylase (SAMDC) gene. Neither their specific role in development nor the role of positive/purifying selection in genetic divergence of this gene family is known. While some data are available on organ-specific expression of AtSAMDC1, AtSAMDC2, AtSAMDC3 and AtSAMDC4, not much is known about their promoters including AtSAMDC5, which is believed to be non-functional. RESULTS: (1) Phylogenetic analysis of the five AtSAMDC genes shows similar divergence pattern for promoters and coding sequences (CDSs), whereas, genetic divergence of 5'UTRs and 3'UTRs was independent of the promoters and CDSs; (2) while AtSAMDC1 and AtSAMDC4 promoters exhibit high activity (constitutive in the former), promoter activities of AtSAMDC2, AtSAMDC3 and AtSAMDC5 are moderate to low in seedlings (depending upon translational or transcriptional fusions), and are localized mainly in the vascular tissues and reproductive organs in mature plants; (3) based on promoter activity, it appears that AtSAMDC5 is both transcriptionally and translationally active, but based on it's coding sequence it seems to produce a non-functional protein; (4) though 5'-UTR based regulation of AtSAMDC expression through upstream open reading frames (uORFs) in the 5'UTR is well known, no such uORFs are present in AtSAMDC4 and AtSAMDC5; (5) the promoter regions of all five AtSAMDC genes contain common stress-responsive elements and hormone-responsive elements; (6) at the organ level, the activity of AtSAMDC enzyme does not correlate with the expression of specific AtSAMDC genes or with the contents of spermidine and spermine...
December 28, 2017: BMC Plant Biology
https://www.readbyqxmd.com/read/29277053/high-yielding-tropical-energy-crops-for-bioenergy-production-effects-of-plant-components-harvest-years-and-locations-on-biomass-composition
#13
K C Surendra, Richard Ogoshi, Halina M Zaleski, Andrew G Hashimoto, Samir Kumar Khanal
The composition of lignocellulosic feedstock, which depends on crop type, crop management, locations and plant parts, significantly affects the conversion efficiency of biomass into biofuels and biobased products. Thus, this study examined the composition of different parts of two high yielding tropical energy crops, Energycane and Napier grass, collected across three locations and years. Significantly higher fiber content was found in the leaves of Energycane than stems, while fiber content was significantly higher in the stems than the leaves of Napier grass...
December 18, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/29234462/a-precise-and-consistent-assay-for-major-wall-polymer-features-that-distinctively-determine-biomass-saccharification-in-transgenic-rice-by-near-infrared-spectroscopy
#14
Jiangfeng Huang, Ying Li, Yanting Wang, Yuanyuan Chen, Mingyong Liu, Youmei Wang, Ran Zhang, Shiguang Zhou, Jingyang Li, Yuanyuan Tu, Bo Hao, Liangcai Peng, Tao Xia
Background: The genetic modification of plant cell walls has been considered to reduce lignocellulose recalcitrance in bioenergy crops. As a result, it is important to develop a precise and rapid assay for the major wall polymer features that affect biomass saccharification in a large population of transgenic plants. In this study, we collected a total of 246 transgenic rice plants that, respectively, over-expressed and RNAi silenced 12 genes of the OsGH9 and OsGH10 family that are closely associated with cellulose and hemicellulose modification...
2017: Biotechnology for Biofuels
https://www.readbyqxmd.com/read/29227859/waste-biorefineries-integrating-anaerobic-digestion-and-microalgae-cultivation-for-bioenergy-production
#15
REVIEW
Yi-di Chen, Shih-Hsin Ho, Dillirani Nagarajan, Nan-Qi Ren, Jo-Shu Chang
Commercialization of microalgal cultivation has been well realized in recent decades with the use of effective strains that can yield the target products, but it is still challenged by the high costs arising from mass production, harvesting, and further processing. Recently, more interest has been directed towards the utilization of waste resources, such as sludge digestate, to enhance the economic feasibility and sustainability of microalgae production. Anaerobic digestion for waste disposal and phototrophic microalgal cultivation are well-characterized technologies in both fields...
December 8, 2017: Current Opinion in Biotechnology
https://www.readbyqxmd.com/read/29226783/evaluation-of-the-water-disinfection-by-product-dichloroacetonitrile-induced-biochemical-oxidative-histopathological-and-mitochondrial-functional-alterations-subacute-oral-toxicity-in-rats
#16
Ying Dong, Fang Li, Haijun Shen, Rongzhu Lu, Siqi Yin, Qi Yang, Zhuangfa Li, Suhua Wang
Dichloroacetonitrile (DCAN), an emerging nitrogenous disinfection by-product, is more genotoxic and cytotoxic than the currently regulated carbonaceous disinfection by-products such as haloacetic acids. Few mechanistic studies have been conducted on the hepatic and renal toxicities of DCAN. This study examined the clinical biochemical, hematological, histopathological, oxidative, and mitochondrial functional alterations to evaluate the systematic toxicity after subacute oral exposure of 11 or 44 mg/kg/day in rats for 28 days...
January 1, 2017: Toxicology and Industrial Health
https://www.readbyqxmd.com/read/29223285/editorial-overview-seeds-for-a-bioenergy-future
#17
EDITORIAL
Matthew W Kanan
No abstract text is available yet for this article.
December 2017: Current Opinion in Chemical Biology
https://www.readbyqxmd.com/read/29223108/impacts-of-sugarcane-agriculture-expansion-over-low-intensity-cattle-ranch-pasture-in-brazil-on-greenhouse-gases
#18
Camila Bolfarini Bento, Solange Filoso, Leonardo Machado Pitombo, Heitor Cantarella, Raffaella Rossetto, Luiz Antonio Martinelli, Janaina Braga do Carmo
Sugarcane is a widespread bioenergy crop in tropical regions, and the growing global demand for renewable energy in recent years has led to a dramatic expansion and intensification of sugarcane agriculture in Brazil. Currently, extensive areas of low-intensity pasture are being converted to sugarcane, while management in the remaining pasture is becoming more intensive, i.e., includes tilling and fertilizer use. In this study, we assessed how such changes in land use and management practices alter emissions of greenhouse gases (GHG) such as CO2, N2O and CH4 by measuring in situ fluxes for one year after conversion from low-intensity pasture to conventional sugarcane agriculture and management-intensive pasture...
December 6, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/29220811/synergistic-effect-of-the-enzyme-complexes-comprising-agarase-carrageenase-and-neoagarobiose-hydrolase-on-degradation-of-the-red-algae
#19
Dae Hee Kang, Seung Kyou You, Young-Chul Joo, Sang Kyu Shin, Jeong Eun Hyeon, Sung Ok Han
In the practice of converting red algae biomass into biofuel or valuable biomaterials, the critical step is the decomposition process of the agarose to give fermentable monomeric sugars. In this study, we selected three enzymes such as agarase, carrageenase and neoagarobiose hydrolase to inducible the simultaneous hydrolysis of the major substrates such as agar and carrageenan constituting the pretreated red algae, and expressed the chimeric enzymes and formed a complexes through optimization of addition ratio...
December 2, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/29218539/carbon-storage-potential-increases-with-increasing-ratio-of-c4-to-c3-grass-cover-and-soil-productivity-in-restored-tallgrass-prairies
#20
Brian J Spiesman, Herika Kummel, Randall D Jackson
Long-term soil carbon (C) storage is essential for reducing CO2 in the atmosphere. Converting unproductive and environmentally sensitive agricultural lands to grasslands for bioenergy production may enhance C storage. However, a better understanding of the interacting effects of grass functional composition (i.e., relative abundance of C4 and C3 grass cover) and soil productivity on C storage will help guide sustainable grassland management. Our objective was to examine the relationship between grass functional composition and potential C storage and how it varies with potential soil productivity...
December 7, 2017: Oecologia
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