著者
杉江 謙一 阿久津 守
出版者
日本法科学技術学会
雑誌
日本法科学技術学会誌 (ISSN:18801323)
巻号頁・発行日
pp.763, (Released:2019-08-23)
参考文献数
13

The cultivar cannabis (Cannabis sativa L.) ‘Tochigi-shiro’ has been developed by the Tochigi Prefectural Institute of Public Health and Environmental Science and Tochigi Prefectural Agricultural Experiment Station. It is considered nontoxic and a fiber-type cannabis because of its low concentration of the hallucinogen Δ9-tetrahydrocannabinol (THC). Recently, concentrated forms of cannabis, such as butane hash oil (BHO), have spread globally, and seizures of BHO have increased in Japan. We expect that the use of BHO prepared from Tochigi-shiro may be detrimental to health. However, the concentrations of cannabinoids in Tochigi-shiro have not previously been reported. In this study, the concentrations of THC, cannabidiol (CBD), cannabinol, and tetrahydrocannabivarin in Tochigi-shiro cultivated in Tochigi Prefecture were measured. Further, BHO was produced from the leaves of Tochigi-shiro using commercially available extraction devices to determine the extraction efficiency of THC and CBD. THC was detected in Tochigi-shiro, and concentrations of each cannabinoid differed between plants grown at three sites in Tochigi Prefecture. However, the concentration ratio of CBD to THC was almost the same in plants from all three sites. In BHO, the concentrations of THC and CBD were 6.59% w/w and 35.0% w/w, respectively. This indicates that the concentrations of THC and CBD were approximately 55- and 35-fold greater, respectively, in BHO than in the leaves of plants before butane gas extraction. We confirmed that the concentration of THC in plants was low, whereas the concentration in BHO was high. In the BHO manufactured from Tochigi-shiro, the CBD concentration was five times higher than that of THC. Moreover, CBD can antagonize the psychotomimetic symptoms caused by THC. Therefore, even if BHO produced from this plant was used, the effect of THC would hardly be obtained. Currently, interest in cannabis is increasing worldwide. The traditional industry producing cannabis as a source of fiber may be affected by the theft of Tochigi-shiro. The results of the present study are relevant to prefectural and city governments and cultivators, and suggest the need for additional protection of cultivated fields against theft.

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Twitter (7 users, 10 posts, 14 favorites)

@denkyupikaso 種子にどれぐらいTHCが含まれているかはわかりませんが、トチギシロの茎の表皮に含まれているものについては研究があるようです。この研究ではトチギシロの表皮からはTHCは検出されなかったようです。 繊維型大麻草およびその濃縮物中のカンナビノイド含有量の調査 https://t.co/Ub6SMUZV3m
@thcjapan 麻薬取締部鑑定課はトチギシロからBHOを抽出し、成分分析した研究(最高THC6.59%:CBD35.0%)で、CBDはTHCの作用を抑制するため ”乱用目的で使用したとしてもTHC による幻覚作用はほとんど得られない” との見解を示しています。THC0.01%のCBDオイルも違法という基準はおかしい。 https://t.co/Ub6SMUZV3m
@Yumepon420 @Lalami420 まだないと思います. 厚労省のとちぎしろ中カンナビノイド含有量の定量分析でCBDは雌花でも3.6%、高CBD種の13%と比べると少なく、表皮には殆ど含まれてないという研究はありました. 杉江 謙一, 阿久津 守, (2019)繊維型大麻草およびその濃縮物中のカンナビノイド含有量の調査 https://t.co/Ub6SMUZV3m
https://t.co/cdnbeftpco #厚生労働省 さん もう少しいい器具用意しますよ まさか日本でCBD認証何ちゃら発行する教団さんもこのレベルじゃないでしょ? 買い上げ調査の際には事前に何と何の欲しいリスト下さい
厚生労働省の研究者によるとちぎしろ中カンナビノイド含有量の定量分析の公表データ。CBD含有量は雌花でも3.6%で高CBD種の13%と比較すると少なく、表皮には殆ど含まれていない。 杉江 謙一, 阿久津 守, (2019)繊維型大麻草およびその濃縮物中のカンナビノイド含有量の調査 https://t.co/K3ZkidWCWB

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