Journal of Industrial Hemp最新文献_第7页

Journal of Industrial Hemp Pub Date : 2006-01-04 DOI: 10.1300/J237v10n02_07

Kenyon Gibson

{"title":"Hemp: A Substance of Hope","authors":"Kenyon Gibson","doi":"10.1300/J237v10n02_07","DOIUrl":"https://doi.org/10.1300/J237v10n02_07","url":null,"abstract":"Abstract Much of the hemp plant is acarbohydrate known as cellulose, found mostly in the outer bark of the stem, which is about 75% cellulose, while the core is about half that or more. This is in fact typical of plants, making cellulose the most common compound in the vegetable kingdom. It is a simple compound, utilising the three common elements of carbon, hydrogen and oxygen, and is a structure of many glucose molecules compounded together. There are slight differences in the arrangement of the glucose from plant to plant, making for different qualities in the cellulose yielded. Hemp is one of the best plants for cellulose production for the reasons that the cellulose it produces is well suited for paper manufacture and textiles, and further, it grows quickly without any great need of pesticides. Hemp use has been suppressed in recent times, but due to its usefulness and the ecological advantages in harvesting hemp over cotton and trees, there has been a call for hemp use which is growing worldwide. Businesses such as Minawear in California and Ecofibres in Australia have been working for the last several years with hemp and both have seen an increase in demand. At present most hemp is grown in China, Canada and Eastern Europe, but it has in history been grown in almost every country of the world, due to the ease with which it is cultivated and the need for the cellulose fibres that it yields.","PeriodicalId":319023,"journal":{"name":"Journal of Industrial Hemp","volume":"466 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-01-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124371213","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

Hempseed Oil—Influence of the Genotype on the Composition in a Two-Year Study 两年研究大麻籽油基因型对成分的影响

Journal of Industrial Hemp Pub Date : 2006-01-04 DOI: 10.1300/J237v10n02_05

B. Matthäus, E. Schumann, L. Brühl, U. Kriese

{"title":"Hempseed Oil—Influence of the Genotype on the Composition in a Two-Year Study","authors":"B. Matthäus, E. Schumann, L. Brühl, U. Kriese","doi":"10.1300/J237v10n02_05","DOIUrl":"https://doi.org/10.1300/J237v10n02_05","url":null,"abstract":"Abstract Seeds of 51 different hemp genotypes, 25 hemp varieties, 19 hemp accessions as well as 7 hemp samples from a cross-breeding program of a Hungarian Institute (GATE), grown in 2000 and 2001 were investigated regarding the oil content as well as fatty acid and tocopherol composition. The oil content ranged between 26.3 in 2001 and 37.5 g/ 100 g in 2000 with 33.2 g/100 g as mean amount in 2000 and 31.2 g/100 g in 2001. The oil contained high amounts of unsaturated fatty acids like linoleic and α-linolenic acid, which comprised about 80% of the total fatty acids. Hemp seed oil also consisted of remarkable amounts of γ-linolenic and stearidonic acid. The concentrations varied from 0.67 to 4.08 g/100 g and 0.39 to 1.60 g/100 g, respectively, in dependence of the genotype. The content of γ-linolenic and stearidonic acid were both highly correlated (r = 0.87), while γ-tocopherol was not correlated to the total sum of polyunsaturated fatty acid. Tocopherols mainly consisted of γ-tocopherol (36 to 97 mg/100 g). This made up to about 85% of the total tocopherols. In the oil also small amounts of α-tocopherol were found (2 to 10 mg/100 g). The effect of the year of cultivation on the composition of the oil was less pronounced than the influence of the genotype. Therefore the seed material, presented in this paper shows interesting possibilities to improve the composition of hemp seed oil.","PeriodicalId":319023,"journal":{"name":"Journal of Industrial Hemp","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-01-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124318205","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 15

Yield Potential of Hemp (Cannabis sativa L.) Cultivars in Denmark 大麻(Cannabis sativa L.)的产量潜力丹麦的品种

Journal of Industrial Hemp Pub Date : 2006-01-04 DOI: 10.1300/J237v10n02_03

L. Deleuran, P. Flengmark

{"title":"Yield Potential of Hemp (Cannabis sativa L.) Cultivars in Denmark","authors":"L. Deleuran, P. Flengmark","doi":"10.1300/J237v10n02_03","DOIUrl":"https://doi.org/10.1300/J237v10n02_03","url":null,"abstract":"Abstract In order to determine the yield potential of fibre hemp in Denmark, defined as seed yield, biomass, stem and fibre production, five cultivars were evaluated in field trials at two sites during 1998-2000. The total dry matter yield, stem yield, fibre yield, fibre percent, plant height, and seed yield were recorded at four seed rates: 8,16,32, and 64 kg ha-1 at the Flakkebjerg site. At the Ronhave site, four cultivars were examined at two row distances: 24 and 48 cm, and one cultivar (Futura) was examined at four seed rates (as above) in combination with 2 row distances: 24 and 48 cm. At Flakkebjerg, the total average dry matter yield of the cultivars Fedora, Fedrina, Felina, and Futura was approximately 13 tha-1 andforFasamo approximately 9 tha-1. The average fibre yields were 2.9 and 1.7 t ha-1, respectively. At Flakkebjerg, the average seed yield over a period of 3 years was approximately 500 kg ha-1. In general, fibre yields increased when seed rates of 16 kg ha-1 or more were used. At 32 kg seed ha-1 Futura gave higher fibre yields than at all other seed rates, and higher yields at 24 cm row distance than at 48 cm. Fasamo differed from the other cultivars by having a lower dry matter yield and a lower percentage of fibre but a higher seed yield.","PeriodicalId":319023,"journal":{"name":"Journal of Industrial Hemp","volume":"182 3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-01-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116419005","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 24

Welcome to the Journal of Industrial Hemp 欢迎来到工业大麻杂志

Journal of Industrial Hemp Pub Date : 2006-01-04 DOI: 10.1080/15377880802390730

H. V. D. van der Werf, R. Clarke, D. Watson

引用次数: 0

Hemp of Russian Northern Regions as a Source of Spinning Fibers 俄罗斯北部地区作为纺丝纤维来源的大麻

Journal of Industrial Hemp Pub Date : 2006-01-04 DOI: 10.1300/J237v10n02_09

S. Grigoryev

引用次数: 8

Welcome to the Journal of Industrial Hemp 欢迎来到工业大麻杂志

Journal of Industrial Hemp Pub Date : 2006-01-04 DOI: 10.1300/j237v10n02_01

R. Clarke, J. Erisman, D. Pate, D. Watson, H. V. D. van der Werf

引用次数: 0

Current Status of THC in German Hemp Food Products 德国大麻食品中四氢大麻酚的现状

Journal of Industrial Hemp Pub Date : 2006-01-04 DOI: 10.1300/J237v10n02_02

D. Lachenmeier, S. Walch

{"title":"Current Status of THC in German Hemp Food Products","authors":"D. Lachenmeier, S. Walch","doi":"10.1300/J237v10n02_02","DOIUrl":"https://doi.org/10.1300/J237v10n02_02","url":null,"abstract":"Abstract In 1996, the prohibition of the cultivation of non-drug Cannabis sativa L. (hemp) with minor content of the psychoactive Δ9-tetrahydrocannabinol (THC) was lifted in Germany. Nowadays, a wide variety of hemp food products is offered on the market. As help for evaluation of such products, this article provides information on all aspects of hemp as foodstuff. An introduction to the current law situation in Germany and the European Union (EU) is presented. In particular, suggestions for the food regulatory and food chemical evaluation of hemp food products are made. Between 1998 and 2003, a significant linear decrease in the THC concentrations for the product groups hemp tea (N = 19, R = −0.73, p < 0.0001) and hemp oil (N = 60, R = −0.23, p = 0.05) was observed. The prescribed use of certified hemp seed by the EU and the increase of controls on manufacturers have obviously led to a significant decline of THC concentrations in hemp food products. The maximum THC content in current purchasable hemp food products is ten to a hundred-fold lower than those found in the studies of the 1990s. These levels of THC in hemp food do not cause regulatory or health concern anymore. However, ongoing quality control is needed to maintain low THC levels. This includes both the use of low THC varieties and proper seed cleaning.","PeriodicalId":319023,"journal":{"name":"Journal of Industrial Hemp","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-01-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125294331","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 19

New Hemp Diseases and Pests in New Zealand 新西兰大麻新病虫害

Journal of Industrial Hemp Pub Date : 2005-06-29 DOI: 10.1300/J237v10n01_08

J. McPartland, B. Rhode

{"title":"New Hemp Diseases and Pests in New Zealand","authors":"J. McPartland, B. Rhode","doi":"10.1300/J237v10n01_08","DOIUrl":"https://doi.org/10.1300/J237v10n01_08","url":null,"abstract":"Abstract This article continues the “Cannabis clinic” series, presenting diseases and pests of hemp (Cannabis sativa L.), featuring color illustrations of signs and symptoms. Hemp cultivation is new to New Zealand (NZ). Field trials began in 2001, evaluating cultivars from Europe or North America. Novel crop plants imported into new geographical areas are exposed to new diseases and pests. The imported plants often present less resistance to local problems than do indigenous plants. Many ‘local’ problems in NZ, however, are introduced organisms. Non-native birds cause the greatest crop damage. Rabbits, famous aliens in NZ, also cause problems. Invertebrate pests include the brown garden snail (Helix aspersa), brown field slug (Deroceras panormitanum), orange-soled slug (Arion distinctus), budworm (Helicoverpa armigera), passion vine leaf hopper (Scolypopa australis), caterpillars (Epiphyas postvittana), and melon aphid (Aphis gossypii). The latter species may be the vector of an unidentified virus that infests hemp. In humid regions and wet conditions, the fungi Botrytis cinerea, Trichothecium roseum, and Sclerotinia sclerotiorum rot flowering tops and stalks. For this article, image capture of invertebrate pests and fungi utilized Auto Montage software, to improve the depth of field and produce perfectly focused images.","PeriodicalId":319023,"journal":{"name":"Journal of Industrial Hemp","volume":"53 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132222651","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Industrial Hemp in Austria 奥地利的工业大麻

Journal of Industrial Hemp Pub Date : 2005-06-29 DOI: 10.1300/J237V10N01_10

Claudia Anna Emma Greslehner

引用次数: 2

New Technology of Harvesting Hemp Grown for Seed 种麻收获新技术

Journal of Industrial Hemp Pub Date : 2005-06-29 DOI: 10.1300/J237v10n01_05

Henryk Burczyk, R. Kaniewski

引用次数: 4