Frost-retted hemp fibers were investigated to assess their suitability for composite applications. Chemical analysis of frost-retted highlighted a high amount solubles (pectins) at the surface and low lignin content in that was attributed an unfavorable synthesis cell wall due particularly cold temperature during growth Nordic countries. The tensile properties considered two different scales pe...

The performance of different natural fibers (hemp, kenaf and bamboo) used to formulate composites with an alkali-activated matrix based on metakaolin is evaluated. Short were randomly dispersed up about 3% the binder weight, fresh cured properties derived determined. Up investigated fraction, it still possible obtain adequate workability without supply additional water or additives. Upon modifi...

An easy-to-use and environmentally friendly method is proposed to increase the fire retardancy of natural fibers. Hemp fibers were phosphorylated by grafting phytic acid, a renewable phosphorous flame retardant urea in aqueous solution. The characterized X-ray fluorescence, solid state 13C 31P NMR analysis, pyrolysis combustion flow calorimetry tensile testing. swelling behavior evaluated optic...

We previously demonstrated that human embryonic mesenchymal cells derived from the palate (HEMP cells) retain alkaline phosphatase (ALP) content and capacity for collagen synthesis after long-term culture, and their growth is markedly stimulated by epidermal growth factor (EGF). There was a dramatic decrease in ALP content and capacity to synthesize collagen in HEMP cells (HEMP-RV cells) persis...

INTRODUCTION The environmental concerns, including dwindling crude oil resources, high oil prices, pollution, greenhouse CO2 emissions, and toxicity in the environment, married to societal pressures towards sustainable development are currently making countries around the world turn to biomass as a renewable resource for a variety of products: fuels, lubricants, chemicals, polymers, fibers, neu...

Cannabis sativa is an economically important source of durable fibers, nutritious seeds, and psychoactive drugs but few economic plants are so poorly understood genetically. Marijuana and hemp were crossed to evaluate competing models of cannabinoid inheritance and to explain the predominance of tetrahydrocannabinolic acid (THCA) in marijuana compared with cannabidiolic acid (CBDA) in hemp. Ind...

Addition of non-traditional raw-materials and flours into wheat flour follows contemporary trend of manufacturing nutritionally healthier fermented bakery products. Aim of the study follows this tendency, evaluating nutritional improvement of composite flour and baking potential of prepared wheat-hemp flour composites. Hemp products addition significantly increased both protein and dietary fibr...

to allow cultivation of hemp varieties with a 9–THC content below 0.3%. By 1998 hemp was reintroduced The objective was to study the genetic structure and degree of in practically all of Europe (Bócsa and Karus, 1998), variability of hemp (Cannabis sativa L.) varieties. Six varieties of hemp were analyzed by random amplified polymorphic DNA though in some countries significant resources are sti...

Industrial hemp has been the focus of official interest in several States. However, hemp and marijuana are different varieties of Cannabis sativa, which is classified as a controlled substance in the United States. With Canada now allowing hemp production, questions have been raised about the demand for hemp products. U.S. markets for hemp fiber (specialty textiles, paper, and composites) and s...

Cannabis was probably the first crop grown for reasons other than food and is found in the ancient writings of Galen and Hippocrates, who both prescribed cannabis. 2] Chinese writings from the first 2 centuries AD refer to Emperor Shen Nuang in the third millennium BC using cannabis medicinally, the first medical use of cannabis. In India in the fourth and third centuries BC, Ayurvedic mixtures...