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https://www.readbyqxmd.com/read/28810219/industrial-hemp-as-a-potential-bioenergy-crop-in-comparison-with-kenaf-switchgrass-and-biomass-sorghum
#1
Lalitendu Das, Enshi Liu, Areej Saeed, David W Williams, Hongqiang Hu, Chenlin Li, Allison E Ray, Jian Shi
This study takes combined field trial, lab experiment, and economic analysis approaches to evaluate the potential of industrial hemp in comparison with kenaf, switchgrass and biomass sorghum. Agronomy data suggest that the per hectare yield (5437kg) of industrial hemp stem alone was at a similar level with switchgrass and sorghum; while the hemp plants require reduced inputs. Field trial also showed that ∼1230kg/ha hemp grain can be harvested in addition to stems. Results show a predicted ethanol yield of ∼82gallons/dry ton hemp stems, which is comparable to the other three tested feedstocks...
August 5, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28803111/laccase-enzyme-detoxifies-hydrolysates-and-improves-biogas-production-from-hemp-straw-and-miscanthus
#2
Michel Schroyen, Stijn W H Van Hulle, Sander Holemans, Han Vervaeren, Katleen Raes
The impact of various phenolic compounds, vanillic acid, ferulic acid, p-coumaric acid and 4-hydroxybenzoic acid on anaerobic digestion of lignocellulosic biomass (hemp straw and miscanthus) was studied. Such phenolic compounds have been known to inhibit biogas production during anaerobic digestion. The different phenolic compounds were added in various concentrations: 0, 100, 500, 1000 and 2000mg/L. A difference in inhibition of biomethane production between the phenolic compounds was noted. Hydrolysis rate, during anaerobic digestion of miscanthus was inhibited up to 50% by vanillic acid, while vanillic acid had no influence on the initial rate of biogas production during the anaerobic digestion of hemp straw...
July 27, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28772936/chemical-treatment-of-waste-abaca-for-natural-fiber-reinforced-geopolymer-composite
#3
Roy Alvin J Malenab, Janne Pauline S Ngo, Michael Angelo B Promentilla
The use of natural fibers in reinforced composites to produce eco-friendly materials is gaining more attention due to their attractive features such as low cost, low density and good mechanical properties, among others. This work thus investigates the potential of waste abaca (Manila hemp) fiber as reinforcing agent in an inorganic aluminosilicate material known as geopolymer. In this study, the waste fibers were subjected to different chemical treatments to modify the surface characteristics and to improve the adhesion with the fly ash-based geopolymer matrix...
May 25, 2017: Materials
https://www.readbyqxmd.com/read/28772871/composite-materials-based-on-hemp-and-flax-for-low-energy-buildings
#4
Przemysław Brzyski, Danuta Barnat-Hunek, Zbigniew Suchorab, Grzegorz Łagód
The article presents the results obtained in the course of a study on prospective application of flax/hemp wastes as a filling material of lime-based composites in the construction of low-energy buildings. The utilized filler comprised the hydrated lime with clay and Portland cement used as additives. The analysis involved evaluation of such properties as porosity, density, thermal conductivity, absorptivity, permeability, as well as compressive and flexural strength. Depending on the quantity of the filler, the properties of the composite changed...
May 7, 2017: Materials
https://www.readbyqxmd.com/read/28772109/differentiation-of-cannabis-subspecies-by-thca-synthase-gene-analysis-using-rflp
#5
Natasa Cirovic, Miljana Kecmanovic, Dusan Keckarevic, Milica Keckarevic Markovic
Cannabis sativa subspecies, known as industrial hemp (C. sativa sativa) and marijuana (C. sativa indica) show no evident morphological distinctions, but they contain different levels of psychoactive Δ-9-tetrahidrocanabinol (THC), with considerably higher concentration in marijuana than in hemp. C. sativa subspecies differ in sequence of tetrahydrocannabinolic acid (THCA) synthase gene, responsible for THC production, and only one active copy of the gene, distinctive for marijuana, is capable of producing THC in concentration more then 0,3% in dried plants, usually punishable by the law...
July 25, 2017: Journal of Forensic and Legal Medicine
https://www.readbyqxmd.com/read/28753919/as-v-sorption-desorption-on-different-waste-materials-and-soil-samples
#6
Ana Quintáns-Fondo, David Fernández-Calviño, Juan Carlos Nóvoa-Muñoz, Manuel Arias-Estévez, María J Fernández-Sanjurjo, Esperanza Álvarez-Rodríguez, Avelino Núñez-Delgado
Aiming to investigate the efficacy of different materials as bio-sorbents for the purification of As-polluted waters, batch-type experiments were employed to study As(V) sorption and desorption on oak ash, pine bark, hemp waste, mussel shell, pyritic material, and soil samples, as a function of the As(V) concentration added. Pyritic material and oak ash showed high sorption (90% and >87%) and low desorption (<2% and <7%). Alternatively, hemp waste showed low retention (16% sorption and 100% desorption of the amount previously sorbed), fine shell and pine bark sorbed <3% and desorbed 100%, the vineyard soil sample sorbed 8% and released 85%, and the forest soil sample sorbed 32% and desorbed 38%...
July 19, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/28727050/net-energy-of-hemp-hulls-and-processed-hemp-hull-products-fed-to-growing-pigs-and-the-comparison-of-net-energy-determined-via-indirect-calorimetry-and-calculated-from-prediction-equations
#7
J W Kim, C M Nyachoti
An experiment was conducted to determine the NE of hemp hulls (HH), extruded HH (EHH), and a blended product of HH with pea (HHP) fed to growing pigs using indirect calorimetry (IC) and to determine effects of dietary fiber on heat production (HP) and fasting HP (FHP). Twenty-four growing barrows with an average initial BW of 22.9 ± 1.75 kg were individually housed in adjustable metabolism crates. Pigs were randomly allotted to 1 of 4 dietary treatments with 6 replicates per treatment. A corn-soybean meal basal diet was prepared...
June 2017: Journal of Animal Science
https://www.readbyqxmd.com/read/28723068/biomimetic-hybridization-of-kevlar-into-silk-fibroin-nanofibrous-strategy-for-improved-mechanic-properties-of-flexible-composites-and-filtration-membranes
#8
Lili Lv, Xiangsheng Han, Lu Zong, Mingjie Li, Jun You, Xiaochen Wu, Chaoxu Li
Silk, one of the strongest natural biopolymers, was hybridized with Kevlar, one of the strongest synthetic polymers, through a biomimetic nanofibrous strategy. Regenerated silk materials have outstanding properties in transparency, biocompatibility, biodegradability and sustainability, and promised the applications as diverse as in pharmaceutics, electronics, photonic devices and membranes. To compete with super mechanic properties of their natural counterpart, regenerated silk materials have been hybridized with inorganic fillers such as graphene and carbon nanotubes, but frequently losing essential mechanic flexibility...
July 19, 2017: ACS Nano
https://www.readbyqxmd.com/read/28694530/transcriptomic-profiling-of-hemp-bast-fibres-at-different-developmental-stages
#9
Gea Guerriero, Marc Behr, Sylvain Legay, Lauralie Mangeot-Peter, Simone Zorzan, Mohammad Ghoniem, Jean-Francois Hausman
Bast fibres are long extraxylary cells which mechanically support the phloem and they are divided into xylan- and gelatinous-type, depending on the composition of their secondary cell walls. The former, typical of jute/kenaf bast fibres, are characterized by the presence of xylan and a high degree of lignification, while the latter, found in tension wood, as well as flax, ramie and hemp bast fibres, have a high abundance of crystalline cellulose. During their differentiation, bast fibres undergo specific developmental stages: the cells initially elongate rapidly by intrusive growth, subsequently they cease elongation and start to thicken...
July 10, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28664608/intima-media-thickness-at-different-arterial-segments-in-pediatric-type-1-diabetes-patients-and-its-relationship-with-advanced-glycation-end-products
#10
Christian Lilje, Julie C Cronan, Elridge J Schwartzenburg, Elizabeth M Owers, Patrice Clesi, Ricardo Gomez, Sarah Stender, James Hempe, Stuart A Chalew, Jeffrey P Cardinale
BACKGROUND: Patients with type 1 diabetes mellitus (T1DM) are at risk for premature atherosclerosis (AS), which has its origin in childhood. Carotid intima-media thickness (IMT) is an established surrogate marker for subclinical AS in adults. The first macroscopically detectable AS changes, however, begin in the abdominal aorta. Advanced glycation end products (AGE) predict microvascular complications in diabetes. OBJECTIVES: To assess the sensitivity for early macrovascular changes of brachial, femoral, and aortic IMT compared to conventional carotid IMT in pediatric T1DM patients ; and the relationship of IMT with AGE...
June 30, 2017: Pediatric Diabetes
https://www.readbyqxmd.com/read/28662388/white-rot-fungi-pretreatment-combined-with-alkaline-oxidative-pretreatment-to-improve-enzymatic-saccharification-of-industrial-hemp
#11
Chunliang Xie, Wenbing Gong, Qi Yang, Zuohua Zhu, Li Yan, Zhenxiu Hu, Yuande Peng
White-rot fungi combined with alkaline/oxidative (A/O) pretreatments of industrial hemp woody core were proposed to improve enzymatic saccharification. In this study, hemp woody core were treated with only white rot fungi, only A/O and combined with the two methods. The results showed that Pleurotus eryngii (P. eryngii) was the most effective fungus for pretreatment. Reducing sugars yield was 329mg/g with 30 Filter Paper Unit (FPU)/g cellulase loading when treated 21day. In the A/O groups, the results showed that when treated with 3% NaOH and 3% H2O2, the yield of reducing sugars was 288mg/g with 30FPU/g cellulase loading...
June 17, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28640922/changes-in-hemp-secondary-fiber-production-related-to-technical-fiber-variability-revealed-by-light-microscopy-and-attenuated-total-reflectance-fourier-transform-infrared-spectroscopy
#12
Eva Fernandez-Tendero, Arnaud Day, Sandrine Legros, Anouck Habrant, Simon Hawkins, Brigitte Chabbert
Interest in hemp (Cannabis sativa L.) is increasing due to the development of a new range of industrial applications based on bast fibers. However the variability of bast fiber yield and quality represents an important barrier to further exploitation. Primary and secondary fiber content was examined in two commercial hemp varieties (Fedora 17, Santhica 27) grown under contrasted sowing density and irrigation conditions. Both growing conditions and hemp varieties impact stem tissue architecture with a large effect on the proportion of secondary fibers but not primary fibers...
2017: PloS One
https://www.readbyqxmd.com/read/28636437/tobacco-rattle-virus-trv-mediated-silencing-of-nicotiana-benthamiana-argonautes-nbagos-reveals-new-antiviral-candidates-and-dominant-effects-of-trv-nbago1
#13
Denis Odokonyero, Maria R Mendoza, Peter Moffett, Herman B Scholthof
The objective of this study was to determine the contribution of different ARGONAUTE proteins in Nicotiana benthamiana (NbAGOs) to the defense against silencing sensitive GFP-expressing viral constructs based on Tomato bushy stunt virus (TBSV) (Tombusvirus), Sunn-hemp mosaic virus (Tobamovirus), and Foxtail mosaic virus (Potexvirus). Upon Tobacco rattle virus (TRV)-mediated down-regulation of NbAGO1, 4, 5, or 6, no effects were noted on susceptibility to any virus construct, whereas knockdown of NbAGO2 specifically prevented silencing of P19-defective TBSV (TGdP19)...
August 2017: Phytopathology
https://www.readbyqxmd.com/read/28625994/the-small-protein-hemp-is-a-transcriptional-activator-for-the-hemin-uptake-operon-in-burkholderia-multivorans-atcc-17616
#14
Takuya Sato, Shouta Nonoyama, Akane Kimura, Yuji Nagata, Yoshiyuki Ohtsubo, Masataka Tsuda
Iron and heme play very important roles in various metabolic functions in bacteria, and their intracellular homeostasis is maintained because high concentrations of free forms of these molecules greatly facilitate the Fenton reaction-mediated production of large amounts of reactive oxygen species that severely damage various biomolecules. The ferric uptake regulator (Fur) from Burkholderiamultivorans ATCC 17616 is an iron-responsive global transcriptional regulator, and its fur deletant exhibits pleiotropic phenotypes...
August 15, 2017: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/28610096/the-genus-i-phlesirtes-i-bolivar-1922-orthoptera-tettigoniidae-conocephalinae-conocephalini-karniellina-a-review-of-the-genus-with-data-on-its-bioacoustics-and-the-description-of-new-species
#15
Claudia Hemp, Klaus-Gerhard Heller
Species of the genus Phlesirtes are reviewed in this paper and 16 new species described. A key is provided to the species of Phlesirtes. Among the subtribe Karniellina of Conocephalini members of the genus Phlesirtes occupy habitats of montane to afroalpine grasslands in East Africa. All recorded species produced long-lasting, trill-like calling songs, consisting of sequences of continuously repeated syllables or syllable pairs with the peak of the carrier frequency in the low ultrasound.
March 22, 2017: Zootaxa
https://www.readbyqxmd.com/read/28609870/revision-of-the-genus-amytta-orthoptera-tettigoniidae-meconematinae-and-new-species-from-east-africa
#16
Claudia Hemp, Klaus-Gerhard Heller
New species of Amytta are described from East Africa. Beside tegminal length, they differ mainly in the structure of the complicated male genitalic organs, notably the last abdominal tergite and cerci. Data on habitat and the acoustics of some species and a key to the species are provided. The songs of all seven Amytta species studied are very similar, consisting of long trills with a syllable repetition rate of about 60 Hz (at 20ºC) and a broad frequency peak in the ultrasound at around 40 kHz. The biogeographic pattern and phylogenetic relationships are discussed for the group...
May 9, 2017: Zootaxa
https://www.readbyqxmd.com/read/28609672/development-of-a-new-extraction-technique-and-hplc-method-for-the-analysis-of-non-psychoactive-cannabinoids-in-fibre-type-cannabis-sativa-l-hemp
#17
Virginia Brighenti, Federica Pellati, Marleen Steinbach, Davide Maran, Stefania Benvenuti
The present work was aimed at the development and validation of a new, efficient and reliable technique for the analysis of the main non-psychoactive cannabinoids in fibre-type Cannabis sativa L. (hemp) inflorescences belonging to different varieties. This study was designed to identify samples with a high content of bioactive compounds, with a view to underscoring the importance of quality control in derived products as well. Different extraction methods, including dynamic maceration (DM), ultrasound-assisted extraction (UAE), microwave-assisted extraction (MAE) and supercritical-fluid extraction (SFE) were applied and compared in order to obtain a high yield of the target analytes from hemp...
September 5, 2017: Journal of Pharmaceutical and Biomedical Analysis
https://www.readbyqxmd.com/read/28549545/developmental-and-internal-validation-of-a-novel-13-loci-str-multiplex-method-for-cannabis-sativa-dna-profiling
#18
Rachel Houston, Matthew Birck, Sheree Hughes-Stamm, David Gangitano
Marijuana (Cannabis sativa L.) is a plant cultivated and trafficked worldwide as a source of fiber (hemp), medicine, and intoxicant. The development of a validated method using molecular techniques such as short tandem repeats (STRs) could serve as an intelligence tool to link multiple cases by means of genetic individualization or association of cannabis samples. For this purpose, a 13 loci STR multiplex method was developed, optimized, and validated according to relevant ISFG and SWGDAM guidelines. The STR multiplex consists of 13 previously described C...
May 2017: Legal Medicine
https://www.readbyqxmd.com/read/28482156/mno2-nanowire-biomass-derived-carbon-from-hemp-stem-for-high-performance-supercapacitors
#19
MinHo Yang, Dong Seok Kim, Seok Bok Hong, Jae-Wook Sim, Jinsoo Kim, Seung-Soo Kim, Bong Gill Choi
Hierarchical 3D nanostructures based on waste biomass are being offered as promising materials for energy storage due to their processabilities, multifunctionalities, environmental benignities, and low cost. Here we report a facile, inexpensive, and scalable strategy for the fabrication of hierarchical porous 3D structure as electrode materials for supercapacitors based on MnO2 nanowires and hemp-derived activated carbon (HC). Vertical MnO2 wires are uniformly deposited onto the surface of HC using a one-step hydrothermal method to produce hierarchical porous structures with conductive interconnected 3D networks...
May 16, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/28457055/short-term-efficacy-of-cbd-enriched-hemp-oil-in-girls-with-dysautonomic-syndrome-after-human-papillomavirus-vaccination
#20
Beniamino Palmieri, Carmen Laurino, Maria Vadalà
BACKGROUND: Cannabidiol (CBD)-based treatments for several diseases, including Tourette's syndrome, multiple sclerosis, epilepsy, movement disorders and glaucoma, are proving to be beneficial and the scientific clinical background of the drug is continuously evolving. OBJECTIVES: To investigate the short-term effect of CBD-enriched hemp oil for relieving symptoms and improving the life quality (QOL) in young girls with adverse drug effects (ADRs) following human papillomavirus (HPV) vaccine...
February 2017: Israel Medical Association Journal: IMAJ
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