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https://www.readbyqxmd.com/read/29345463/-%C3%A2-sativamides-a-and-b-two-pairs-of-racemic-nor-lignanamide-enantiomers-from-the-fruits-of-cannabis-sativa-hemp-seed
#1
Guo-Yuan Zhu, Ji Yang, Xiao-Jun Yao, Xing Yang, Jing Fu, Xin Liu, Li-Ping Bai, Liang Liu, Zhi-Hong Jiang
(±)-Sativamides A (1) and B (2), two pairs of nor-lignanamide enantiomers featuring a unique benzo-angular triquinane skeleton, were isolated from the fruits of Cannabis sativa (hemp seed). Their structures were elucidated by detailed spectroscopic analysis and ECD calculations. The resolution of (+)- and (-)-sativamides A and B were achieved by chiral HPLC. Pretreatment of neuroblastoma cells with 1 and 2 significantly reduced the endoplasmic reticulum (ER) stress-induced cytotoxicity.
January 18, 2018: Journal of Organic Chemistry
https://www.readbyqxmd.com/read/29340860/trace-element-phytoextraction-from-contaminated-soil-a-case-study-under-mediterranean-climate
#2
Werther Guidi Nissim, Emily Palm, Stefano Mancuso, Elisa Azzarello
The current field study aims to assess the suitability of four different plant species (i.e. poplar, willow, hemp and alfalfa) to be used for trace element (TE) (i.e. Cd, Cu, Ni, Pb and Zn) phytoextraction under hot-arid Mediterranean climate conditions. Plants were grown for two consecutive years on a moderate TE contaminated soil, supplied with water and mineral nutrients. The growth and physiological parameters were assessed throughout the trial to compare the response of plants to the environmental pollution, and TE uptake rates were measured for aboveground plant tissues...
January 16, 2018: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29339280/simultaneous-degumming-and-production-of-a-natural-gum-from-crotalaria-juncea-seeds-physicochemical-and-rheological-characterization
#3
Suvra Sadhukhan, Annesha Bhattacharjee, Ujjaini Sarkar, Pabitra Kumar Baidya, Sibashish Baksi
The oil extracted from Crotalaria juncea (Sunn-hemp) contains 70% of gum. Several methods of degumming are attempted in order to maximize the yield of gum. During appropriate water induced degumming, about 95-98% of phosphatides are separated. The maximum oil yield for two types of degummimg processes are 0.59% and 0.69% corresponding to hot water and pure O-phosphoric acid (19.88 N) treatment respectively. The % oil yield obtained for TOP degumming is about 0.78%. Physico-chemical characteristics of the isolated gum such as moisture, ash, protein, fat and aqueous solubility along with FTIR and TGA analysis are studied in order to evaluate the effect of extraction process...
January 12, 2018: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/29336683/adsorption-of-2-4-dichlorophenoxyacetic-acid-and-4-chloro-2-metylphenoxyacetic-acid-onto-activated-carbons-derived-from-various-lignocellulosic-materials
#4
Beata Doczekalska, Krzysztof Kuśmierek, Andrzej Świątkowski, Monika Bartkowiak
Adsorption of 2,4-dichlorophenoxyacetic acid (2,4-D) and 4-chloro-2-metylphenoxyacetic acid (MCPA) from aqueous solution onto activated carbons derived from various lignocellulosic materials including willow, miscanthus, flax, and hemp shives was investigated. The adsorption kinetic data were analyzed using two kinetic models: the pseudo-first order and pseudo-second order equations. The adsorption kinetics of both herbicides was better represented by the pseudo-second order model. The adsorption isotherms of 2,4-D and MCPA on the activated carbons were analyzed using the Freundlich and Langmuir isotherm models...
January 16, 2018: Journal of Environmental Science and Health. Part. B, Pesticides, Food Contaminants, and Agricultural Wastes
https://www.readbyqxmd.com/read/29332804/effect-of-preprocessing-high-resolution-mass-spectra-on-the-pattern-recognition-of-cannabis-hemp-and-liquor
#5
Xinyi Wang, Peter de B Harrington, Steven F Baugh
High-resolution mass spectrometry (HRMS) combined with pattern recognition was used to discriminate among twenty-five Cannabis samples, twenty hemp samples, and eight liquor samples. The effects of preprocessing on multivariate data analysis were evaluated for Orbitrap high-resolution mass spectra. Different root transformations were evaluated with respect to the bin width and the average classification rates. In addition, linear binning and proportional binning with various resolving powers were studied with respect to the average classification rates...
April 1, 2018: Talanta
https://www.readbyqxmd.com/read/29331518/microwave-assisted-ionic-liquid-mediated-rapid-catalytic-conversion-of-non-edible-lignocellulosic-sunn-hemp-fibres-to-biofuels
#6
Souvik Kumar Paul, Saikat Chakraborty
Sunn hemp fibre - a cellulose-rich crystalline non-food energy crop, containing 75.6% cellulose, 10.05% hemicellulose, 10.32% lignin, with high crystallinity (80.17%) and degree of polymerization (650) - is identified as a new non-food substrate for lignocellulosic biofuel production. Microwave irradiation is employed to rapidly rupture the cellulose's glycosidic bonds and enhance glucose yield to 78.7% at 160 °C in only 46 min. The reactants - long-chain cellulose, ionic liquid, transition metal catalyst, and water - form a polar supramolecular complex that rotates under the microwave's alternating polarity and rapidly dissipates the electromagnetic energy through molecular collisions, thus accelerating glycosidic bond breakage...
January 3, 2018: Bioresource Technology
https://www.readbyqxmd.com/read/29306345/evaluation-of-the-effects-of-different-diets-on-microbiome-diversity-and-fatty-acid-composition-of-rumen-liquor-in-dairy-goat
#7
P Cremonesi, G Conte, M Severgnini, F Turri, A Monni, E Capra, L Rapetti, S Colombini, S Chessa, G Battelli, S P Alves, M Mele, B Castiglioni
Fat supplementation plays an important role in defining milk fatty acids (FA) composition of ruminant products. The use of sources rich in linoleic and α-linolenic acid favors the accumulation of conjugated linoleic acids isomers, increasing the healthy properties of milk. Ruminal microbiota plays a pivotal role in defining milk FA composition, and its profile is affected by diet composition. The aim of this study was to investigate the responses of rumen FA production and microbial structure to hemp or linseed supplementation in diets of dairy goats...
January 8, 2018: Animal: An International Journal of Animal Bioscience
https://www.readbyqxmd.com/read/29249063/the-application-of-plant-in-vitro-cultures-in-cannabinoid-production
#8
REVIEW
Tomasz Wróbel, Mariola Dreger, Karolina Wielgus, Ryszard Słomski
Cannabinoids have considerable interest in the pharmaceutical industry. However, the production of medicines from hemp (Cannabis sativa L.) in most countries is restricted by law. Large-scale, field cultivation of hemp is difficult to control. Cannabinoid content in plants is variable and depends on multiple factors. Therefore, alternative methods of production have been investigated. The development of micropropagation techniques is a necessary step for genetic modification. Promising results have been obtained for certain narcotic genotypes...
December 16, 2017: Biotechnology Letters
https://www.readbyqxmd.com/read/29247959/triacylglycerol-hand-shape-profile-of-argan-oil-rapid-and-simple-uhplc-pda-esi-tof-ms-and-hptlc-methods-to-detect-counterfeit-argan-oil-and-argan-oil-based-products
#9
Giordana Pagliuca, Carlotta Bozzi, Francesca Romana Gallo, Giuseppina Multari, Giovanna Palazzino, Rita Porrà, Alessia Panusa
The marketing of new argan-based products is greatly increased in the last few years and consequently, it has enhanced the number of control analysis aimed at detecting counterfeit products claiming argan oil as a major ingredient. Argan oil is produced in Morocco and it is quite expensive. Two simple methods for the rapid screening of pure oil and argan-oil based products, focused on the analysis of the triacylglycerol profile, have been developed. A three-minute-run by UHPLC-PDA allows the identification of a pure argan oil, while the same run with the MS detector allows also the analysis of products containing the oil down to 0...
December 2, 2017: Journal of Pharmaceutical and Biomedical Analysis
https://www.readbyqxmd.com/read/29245458/new-i-eurycorypha-i-species-orthoptera-tettigonoidea-phaneropteridae-%C3%A2-phaneropterinae-from-east-africa
#10
Claudia Hemp
Eight Eurycorypha species are newly described for Tanzania. These are E. binasuta n. sp. from the Nguru and Udzungwa Mountains, E. curviflava n. sp. from the eastern slopes of Mt Kilimanjaro, E. divertata n. sp., E. elongata n. sp. and E. flexata n. sp. from the East Usambara Mountains, E. pseudomeruensis n. sp. from Central-west Tanzania and western Kenya, E. pseudovaria n. sp. from the West and East Usambara Mountains and E. victoriae n. sp. from the shores of Lake Victoria. Further the hitherto unknown females of two Eurycorypha, E...
November 30, 2017: Zootaxa
https://www.readbyqxmd.com/read/29245416/review-of-the-african-genera-i-arantia-i-st%C3%A3-l-and-i-goetia-i-karsch-orthoptera-tettigoniidae-phaneropterinae
#11
Claudia Hemp, Bruno Massa
The genus Arantia is reviewed, the distribution and distinguishing characters given. The three species of Goetia are assigned as subgenus to Arantia. Arantia gestri Griffini is transferred to this new subgenus and synonymized with G. dimidiata Bolívar. Other species synonymized are: A. accrana Karsch with A. rectifolia Brunner von Wattenwyl; A. gabunensis Brunner von Wattenwyl with A. regina Karsch; A. mammisignum Karsch and A. tigrina Bolívar with A. excelsior Karsch; A. ugandana Rehn is synonymized with A...
December 7, 2017: Zootaxa
https://www.readbyqxmd.com/read/29240420/iodine-promoted-aromatization-of-p-menthane-type-phytocannabinoids
#12
Federica Pollastro, Diego Caprioglio, Patrizia Marotta, Aniello Schiano Moriello, Luciano De Petrocellis, Orazio Taglialatela-Scafati, Giovanni Appendino
Treatment with iodine cleanly converts various p-menthane-type phytocannabinoids and their carboxylated precursors into cannabinol (CBN, 1a). The reaction is superior to previously reported protocols in terms of simplicity and substrate range, which includes not only tricyclic tetrahydrocannabinols such as Δ9-THC (2a) but also bicyclic phytocannabinoids such as cannabidiol (CBD, 3a). Lower homologues from the viridin series (2c and 3c, respectively) afforded cannabivarin (CBV), a non-narcotic compound that, when investigated against a series of ionotropic (thermo-TRPs) biological end-points of phytocannabinoids, retained the submicromolar TRPA1-activating and TRPM8-inhibiting properties of CBN, while also potently activating TRPV2...
December 14, 2017: Journal of Natural Products
https://www.readbyqxmd.com/read/29207512/molecular-investigation-of-the-stem-snap-point-in-textile-hemp
#13
Marc Behr, Sylvain Legay, Jean-Francois Hausman, Stanley Lutts, Gea Guerriero
Fibre crops are important natural resources, as they sustainably provide bast fibres, an economically-valuable raw material used in the textile and biocomposite sectors. Among fibre crops, textile hemp (Cannabis sativa L.) is appreciated for its long and strong gelatinous bast fibres. The stem of fibre crops is a useful system for cell wall-oriented studies, because it shows a strong tissue polarity with a lignified inner core and a cellulosic hypolignified cortex, as well as a basipetal lignification gradient...
December 4, 2017: Genes
https://www.readbyqxmd.com/read/29204056/effects-of-hemp-seed-soft-capsule-on-colonic-ion-transport-in-rats
#14
Xiao-Fang Lu, Meng-Di Jia, Sheng-Sheng Zhang, Lu-Qing Zhao
AIM: To investigate the effect of Hemp seed soft capsule (HSCC) on colonic ion transport and its related mechanisms in constipation rats. METHODS: Sprague-Dawley male rats were randomly divided into three groups: normal group, constipation group and HSSC group. Rats in the constipation and HSSC groups were administrated loperamide 3 mg/kg per day orally for 12 d to induce the constipation model. Then, the HSSC group was given HSSC 0.126 g/kg per day by gavage for 7 d...
November 14, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/29182999/analysis-of-cannabinoids-in-commercial-hemp-seed-oil-and-decarboxylation-kinetics-studies-of-cannabidiolic-acid-cbda
#15
Cinzia Citti, Barbara Pacchetti, Maria Angela Vandelli, Flavio Forni, Giuseppe Cannazza
Hemp seed oil from Cannabis sativa L. is a very rich natural source of important nutrients, not only polyunsaturated fatty acids and proteins, but also terpenes and cannabinoids, which contribute to the overall beneficial effects of the oil. Hence, it is important to have an analytical method for the determination of these components in commercial samples. At the same time, it is also important to assess the safety of the product in terms of amount of any psychoactive cannabinoid present therein. This work presents the development and validation of a highly sensitive, selective and rapid HPLC-UV method for the qualitative and quantitative determination of the main cannabinoids, namely cannabidiolic acid (CBDA), tetrahydrocannabinolic acid (THCA), cannabidiol (CBD), tetrahydrocannabinol (THC), cannabinol (CBN), cannabigerol (CBG) and cannabidivarin (CBDV), present in 13 commercial hemp seed oils...
February 5, 2018: Journal of Pharmaceutical and Biomedical Analysis
https://www.readbyqxmd.com/read/29112398/new-ace-inhibitory-peptides-from-hemp-seed-cannabis-sativa-l-proteins
#16
Lara P Orio, Giovanna Boschin, Teresa Recca, Carlo F Morelli, Laura Ragona, Pierangelo Francescato, Anna Arnoldi, Giovanna Speranza
A 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 bidimensional NMR experiments and LC-MS analyses led to the identification of four potentially bioactive peptides, i.e. GVLY, IEE, LGV, and RVR...
November 17, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/29111245/environmental-performance-of-straw-based-pulp-making-a-life-cycle-perspective
#17
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
#18
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
#19
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
#20
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 Δ9-tetrahydrocannabinol (Δ9-THC). In Canada, this limit is 10 μg of Δ9-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 Δ9-THC and cannabidiol (CBD)...
2017: Cannabis and Cannabinoid Research
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