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https://www.readbyqxmd.com/read/29112398/new-ace-inhibitory-peptides-from-hemp-seed-cannabis-sativa-l-proteins
#1
Lara P Orio, Giovanna Boschin, Teresa Recca, Carlo F Morelli, Laura Ragona, Pierangelo Francescato, Anna Arnoldi, Giovanna Speranza
An hemp seed protein isolate, prepared from defatted hemp seed meals by alkaline solubilization/acid precipitation, was subjected to extensive chemical hydrolysis under acid conditions (6 M HCl). The resulting hydrolysate was fractionated by semipreparative RP-HPLC and the purified fractions were tested as inhibitors of angiotensin converting enzyme (ACE). Mono- and bi-dimensional NMR experiments and LC-MS/MS analyses led to the identification of four potentially bioactive peptides, i.e. GVLY, IEE, LGV, and RVR...
November 7, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/29111245/environmental-performance-of-straw-based-pulp-making-a-life-cycle-perspective
#2
Mingxing Sun, Yutao Wang, Lei Shi
Agricultural straw-based pulp making plays a vital role in pulp and paper industry, especially in forest deficient countries such as China. However, the environmental performance of straw-based pulp has scarcely been studied. A life cycle assessment on wheat straw-based pulp making in China was conducted to fill of the gaps in comprehensive environmental assessments of agricultural straw-based pulp making. On average, the global warming potential (GWP), GWP excluding biogenic carbon, acidification potential and eutrophication potential of wheat straw based pulp making are 2299kg CO2-eq, 4550kg CO2-eq, 16...
October 27, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/29105041/the-crop-residue-of-fiber-hemp-cv-futura-75-from-a-waste-product-to-a-source-of-botanical-insecticides
#3
Giovanni Benelli, Roman Pavela, Giulio Lupidi, Massimo Nabissi, Riccardo Petrelli, Stephane L Ngahang Kamte, Loredana Cappellacci, Dennis Fiorini, Stefania Sut, Stefano Dall'Acqua, Filippo Maggi
In the attempt to exploit the potential of the monoecious fiber hemp cv. Futura 75 in new fields besides textile, cosmetics and food industry, its crop-residue given by leaves and inflorescences was subjected to hydrodistillation to obtain the essential oils. These are niche products representing an ideal candidate for the development of natural insecticides for the control and management of mosquito vectors, houseflies and moth pests. After GC-MS analysis highlighting a safe and legal chemical profile (THC in the range 0...
November 6, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29099795/microwave-assisted-extraction-of-cannabinoids-in-hemp-nut-using-response-surface-methodology-optimization-and-comparative-study
#4
Chih-Wei Chang, Ching-Chi Yen, Ming-Tsang Wu, Mei-Chich Hsu, Yu-Tse Wu
Hemp nut is commonly incorporated into several food preparations; however, most countries set regulations for hemp products according to their cannabinoid content. In this study, we have developed an efficient microwave-assisted extraction (MAE) method for cannabinoids (i.e., Δ9-tetrahydrocannabinol, cannabidiol, and cannabinol) in hemp nut. Optimization of the MAE procedure was conducted through single factor experiments and response surface methodology (RSM). A comparative study was also conducted to determine the differences in the extraction yields and morphology of hemp nut between MAE and reference extraction methods, namely heat reflux extraction (HRE), Soxhlet extraction (SE), supercritical fluid extraction (SFE), and ultrasound-assisted extraction (UAE)...
November 3, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29098190/cannabis-sativa-hemp-seeds-%C3%AE-9-tetrahydrocannabinol-and-potential-overdose
#5
Yi Yang, Melissa M Lewis, Angelica M Bello, Ewa Wasilewski, Hance A Clarke, Lakshmi P Kotra
Introduction:Cannabis sativa (hemp) seeds are popular for their high nutrient content, and strict regulations are in place to limit the amount of potentially harmful phytocannabinoids, especially Δ(9)-tetrahydrocannabinol (Δ(9)-THC). In Canada, this limit is 10 μg of Δ(9)-THC per gram of hemp seeds (10 ppm), and other jurisdictions in the world follow similar guidelines. Materials and Methods: We investigated three different brands of consumer-grade hemp seeds using four different procedures to extract phytocannabinoids, and quantified total Δ(9)-THC and cannabidiol (CBD)...
2017: Cannabis and Cannabinoid Research
https://www.readbyqxmd.com/read/29096438/exploration-of-potentially-bioactive-peptides-generated-from-the-enzymatic-hydrolysis-of-hempseed-proteins
#6
Gilda Aiello, Carmen Lammi, Giovanna Boschin, Chiara Zanoni, Anna Arnoldi
The seed of industrial hemp is an underexploited protein source. In view of a possible use in functional foods, a hempseed protein concentrate was hydrolyzed with pepsin, trypsin, pancreatin, or a mixture of these enzymes. A detailed peptidomic analysis using data-dependent acquisition showed that the numbers of peptides identified ranged from 90 belonging to 33 parent proteins in the peptic hydrolysate to 9 belonging to 6 proteins in the pancreatin digest. The peptic and tryptic hydrolysates resulted to be the most efficient inhibitors of 3-hydroxymethyl-coenzyme A reductase activity, when tested on the catalytic domain of the enzyme...
November 2, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/29095577/regulating-hemp-and-cannabis-based-products
#7
Mindy Bridges, Karmen Hanson
(1)Different state agencies often regulate the hemp and cannabis industries separately. (2) Pharmaceutical products derived from cannabis are currently in clinical trials for approval in the U.S. and other countries. One product is already approved for use in 29 countries, but not in the U.S. (3) In August 2017, NCSL unanimously approved a policy position supporting federal legislation to define industrial hemp as a distinct agricultural crop (containing 1 percent or less of THC) and allow states to regulate commercial hemp farming...
October 2017: NCSL Legisbrief
https://www.readbyqxmd.com/read/29080417/identification-of-a-sustainable-two-plant-diet-that-effectively-prevents-age-related-metabolic-syndrome-and-extends-lifespan-in-aged-mice
#8
Xiang-Yong Li, Ying-Hua Liu, Bin Wang, Chih-Yu Chen, Hong-Man Zhang, Jing X Kang
The current system of food production is linked to both the increasing prevalence of chronic disease and the deterioration of the environment, and thereby calls for novel ways of producing nutritious foods in a sustainable manner. In the "longevity village" of Bama, China, we have identified two plant foods, hemp seed and bitter vegetable (Sonchus oleraceus), that are commonly consumed by its residents and grow abundantly in unfarmed land without fertilizers or pesticides. Here, we show that a diet composed of these two foods (the "HB diet") provides a sufficient variety of nutrients and confers significant health benefits...
September 19, 2017: Journal of Nutritional Biochemistry
https://www.readbyqxmd.com/read/29070891/damage-mechanisms-in-defected-natural-fibers
#9
Johnny Beaugrand, Sofiane Guessasma, Jean-Eudes Maigret
A novel experimental setup is presented to reveal damage mechanisms in bast fibers. 3D imaging at submicronic scale based on X-ray micro-tomography is combined with in-situ tensile experiments of both elementary fibers and bundles. The results reveal that the relevant scale that drives failure of hemp lignocellulosic fibers is submicronic. In-situ tensile experiments assisted by X-ray micro-tomography shows complex damage mechanisms involving the constitutive sub-layer structure, fiber extraction defects like kink bands, and the tubular porosity of the natural fiber...
October 25, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28954403/textile-hemp-vs-salinity-insights-from-a-targeted-gene-expression-analysis
#10
Gea Guerriero, Marc Behr, Jean-Francois Hausman, Sylvain Legay
Soil salinity is a serious threat to agriculture, because it compromises biomass production and plant productivity, by negatively affecting the vegetative growth and development of plants. Fiber crops like textile hemp (Cannabis sativa L.) are important natural resources that provide, sustainably, both cellulosic and woody fibers for industry. In this work, the response to salinity (200 mM NaCl) of a fiber variety of hemp (Santhica 27) was studied using quantitative real-time PCR. The responses of plantlets aged 15 days were analyzed by microscopy and by measuring the changes in expression of cell wall-related genes, as well as in the general response to exogenous constraints...
September 26, 2017: Genes
https://www.readbyqxmd.com/read/28946925/iodine-concentration-of-milk-alternative-drinks-available-in-the-uk-in-comparison-with-cows-milk
#11
Sarah C Bath, Sarah Hill, Heidi Goenaga Infante, Sarah Elghul, Carolina J Nezianya, Margaret P Rayman
Iodine deficiency is present in certain groups of the UK population, notably in pregnant women; this is of concern as iodine is required for fetal brain development. UK milk is rich in iodine and is the principal dietary iodine source. UK sales of milk-alternative drinks are increasing but data are lacking on their iodine content. As consumers may replace iodine-rich milk with milk-alternative drinks, we aimed to measure the iodine concentration of those available in the UK. Using inductively coupled plasma-MS, we determined the iodine concentration of seven types of milk-alternative drink (soya, almond, coconut, oat, rice, hazelnut and hemp) by analysing forty-seven products purchased in November/December 2015...
October 2017: British Journal of Nutrition
https://www.readbyqxmd.com/read/28931375/identification-of-fasciclin-like-arabinogalactan-proteins-in-textile-hemp-cannabis-sativa-l-in-silico-analyses-and-gene-expression-patterns-in-different-tissues
#12
Gea Guerriero, Lauralie Mangeot-Peter, Sylvain Legay, Marc Behr, Stanley Lutts, Khawar Sohail Siddiqui, Jean-Francois Hausman
BACKGROUND: The fasciclin-like arabinogalactan proteins (FLAs) belong to the arabinogalactan protein (AGP) superfamily and are known to play different physiological roles in plants. This class of proteins was shown to participate in plant growth, development, defense against abiotic stresses and, notably, cell wall biosynthesis. Although some studies are available on the characterization of FLA genes from different species, both woody and herbaceous, no detailed information is available on the FLA family of textile hemp (Cannabis sativa L...
September 20, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28891950/impact-of-silicon-in-plant-biomass-production-focus-on-bast-fibres-hypotheses-and-perspectives
#13
REVIEW
Marie Luyckx, Jean-Francois Hausman, Stanley Lutts, Gea Guerriero
Silicon (Si) is an abundant element which, when supplied to plants, confers increased vigor and resistance to exogenous stresses, as well as enhanced stem mechanical strength. Plant species vary in their ability to take Si up and to accumulate it under the form of silicon dioxide (SiO₂) in their tissues: emblematic of this is the example of Poales, among which there is rice, a high Si accumulator. Monocots usually accumulate more Si than dicots; however, the impact that Si has on dicots, notably on economically important dicots, is a subject requiring further study and scientific efforts...
September 9, 2017: Plants (Basel, Switzerland)
https://www.readbyqxmd.com/read/28888560/unintentional-cannabis-ingestion-in-children-a-systematic-review
#14
John R Richards, Nishelle E Smith, Aimee K Moulin
OBJECTIVE: To analyze published reports of unintentional cannabis ingestions in children to determine presenting signs and symptoms, route of exposure, treatment, and outcome. STUDY DESIGN: PubMed, OpenGrey, and Google Scholar were systematically searched. Articles were selected, reviewed, and graded using Oxford Center for Evidence-Based Medicine guidelines. RESULTS: Of 3316 articles, 44 were included (3582 children age ≤12 years). We found no high quality (Oxford Center for Evidence-Based Medicine level I or II) studies and 10 level III studies documenting lethargy as the most common presenting sign and confirming increasing incidence of unintentional ingestion in states having decriminalized medical and recreational cannabis...
September 6, 2017: Journal of Pediatrics
https://www.readbyqxmd.com/read/28886910/challenges-towards-revitalizing-hemp-a-multifaceted-crop
#15
REVIEW
Craig Schluttenhofer, Ling Yuan
Hemp has been an important crop throughout human history for food, fiber, and medicine. Despite significant progress made by the international research community, the basic biology of hemp plants remains insufficiently understood. Clear objectives are needed to guide future research. As a semi-domesticated plant, hemp has many desirable traits that require improvement, including eliminating seed shattering, enhancing the quantity and quality of stem fiber, and increasing the accumulation of phytocannabinoids...
September 5, 2017: Trends in Plant Science
https://www.readbyqxmd.com/read/28872624/effect-of-silane-coupling-agent-on-tribological-properties-of-hemp-fiber-reinforced-plant-derived-polyamide-1010-biomass-composites
#16
Yosuke Nishitani, Tetsuto Kajiyama, Toshiyuki Yamanaka
We have studied the effects of silane coupling agents used for the surface treatment of fiber on the tribological properties of hemp fiber (HF) reinforced plant-derived polyamide 1010 (PA1010) biomass composites. Hemp fibers were surface-treated by two surface treatment methods: (a) alkali treatment by sodium hydroxide solution and (b) surface treatment by silane coupling agents. Three types of silane coupling agents, namely aminosilane, epoxysilane and ureidosilane were used. These HF/PA1010 biomass composites were extruded using a twin extruder, and injection-molded...
September 5, 2017: Materials
https://www.readbyqxmd.com/read/28866364/development-of-rapid-and-highly-sensitive-detection-of-bean-common-mosaic-necrosis-virus-in-leguminous-crops-using-loop-mediated-isothermal-amplification-assay
#17
Siwon Lee, Heejung Kim, Jin-Young Lee, Jae-Young Rho
Bean common mosaic necrosis virus (BCMNV) is a plant pathogenic virus that can infect leguminous crops such as kidney beans, sunn hemp, red beans, and mung beans. BCMNV has not been reported in Korea and is classified as a quarantine plant virus. Currently, the standard diagnostic method for diagnosis of BCMNV is reverse transcription (RT)-nested PCR system. However a more rapid monitoring system is needed to enable the testing of more samples. The use of highly efficient loop-mediated isothermal amplification (LAMP) assay for its detection has not yet been reported, and development of LAMP for detecting BCMNV in this study...
September 1, 2017: Journal of Virological Methods
https://www.readbyqxmd.com/read/28861507/a-conversion-of-oral-cannabidiol-to-delta9-tetrahydrocannabinol-seems-not-to-occur-in-humans
#18
Gerhard Nahler, Franjo Grotenhermen, Antonio Waldo Zuardi, José A S Crippa
Cannabidiol (CBD), a major cannabinoid of hemp, does not bind to CB1 receptors and is therefore devoid of psychotomimetic properties. Under acidic conditions, CBD can be transformed to delta9-tetrahydrocannabinol (THC) and other cannabinoids. It has been argued that this may occur also after oral administration in humans. However, the experimental conversion of CBD to THC and delta8-THC in simulated gastric fluid (SGF) is a highly artificial approach that deviates significantly from physiological conditions in the stomach; therefore, SGF does not allow an extrapolation to in vivo conditions...
2017: Cannabis and Cannabinoid Research
https://www.readbyqxmd.com/read/28846607/green-composites-based-on-blends-of-polypropylene-with-liquid-wood-reinforced-with-hemp-fibers-thermomechanical-properties-and-the-effect-of-recycling-cycles
#19
Gianluca Cicala, Claudio Tosto, Alberta Latteri, Angela Daniela La Rosa, Ignazio Blanco, Ahmed Elsabbagh, Pietro Russo, Gerhard Ziegmann
Green composites from polypropylene and lignin-based natural material were manufactured using a melt extrusion process. The lignin-based material used was the so called "liquid wood". The PP/"Liquid Wood" blends were extruded with "liquid wood" content varying from 20 wt % to 80 wt %. The blends were thoroughly characterized by flexural, impact, and dynamic mechanical testing. The addition of the Liquid Wood resulted in a great improvement in terms of both the flexural modulus and strength but, on the other hand, a reduction of the impact strength was observed...
August 26, 2017: Materials
https://www.readbyqxmd.com/read/28810219/industrial-hemp-as-a-potential-bioenergy-crop-in-comparison-with-kenaf-switchgrass-and-biomass-sorghum
#20
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...
November 2017: Bioresource Technology
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