The main chemical constituents of the essential oil of peppermint are identical,which is 1-menthone,1-menthol, menthlacetate, menthofuan,α-pinene,β-pinene, limonene, 1, 8-cineole, 3-octanol, isomenthone, pulegone, neomenthol, caryophyllene, sabinenehydrate, germacrene-D, piperitol, viridiflorol,isomenthone, and others;but their contents are different,hence the aroma quality among the essential oil is greatly different.

它們的主要組成成分相同二级免费黄片国产，均為薄荷酮、薄荷呋喃国产精品特黄特级AAAAAA片、乙酸薄荷酯一级A片岛國、薄荷醇、α-蒎烯欧美大胆一级视频、β-蒎烯97人操人、苧烯、1中国三级黄色片18岁美女全体逼、8-桉葉油素A片、Com、3-辛醇、水燴烯超碰地址、異薄荷酮九一国产视频精选、新薄荷醇、石竹烯国产欧美精品一区二区三区四某1区、胡薄荷酮色综合久久91、大根香葉烯、胡椒醇麻豆A片在线观看、綠花醇等国产97av在线播放，但其含量有較大的差別，從而使精油香氣品質(zhì)產(chǎn)生了很大的差異视频一区二区久久91。

16 And 19 components are identified from three specimens,which accounted for 99.63%, 99.70% and 99.28% of volatile fraction, respectively. The major components are pulegone and menthone, which accounted for 89.02%, 83.51%and 87.11%(Horm rural Buerjin county of Xinjiang). Others are isomenthone, piperitenone,isopulegone and limonene et al.Key words Ziziphora clinopodioides Lam. essential oil gas chromatography-mass spectrometry

從3個(gè)樣本中分別鑒定出10種免费成年人在线看、16種和19種揮發(fā)油成分，占各自揮發(fā)油總量的99.62%Ⅴ片视频免费在线观看、99.71%和99.28%欧美熟妇free性XXXX。3個(gè)采集地的芳香新塔花的主要成分相同，均為長葉薄荷酮和薄荷酮国产精品资源网在线观看，兩者總量分別達(dá)到了89.02%澳美午夜福利、83.51%和87.11%（新疆布爾津縣禾木鄉(xiāng)樣品），其他主要成分為異薄荷酮人人爽人人看人人硬、胡椒烯酮国产91视频有限公司、異長葉薄荷酮、檸檬烯等在线等免费看黄片。

Under which the extraction rate of volatile oil is 0.9652%. 2. The main effective components of the volatile oil by GC-MS are pulegone and menthone. In addition, 1-eicosanol that had never been reported in literature have been identified.

由GC-MS鑒定出揮發(fā)油的主要有效成分是胡薄荷酮和薄荷酮www。.你懂得，并鑒定出了1-二十醇等文獻(xiàn)未曾報(bào)道過的化合物。

The main effective components of the volatile oil from Schizonepeta tenuifolia Briq. by GC-MS are pulegone and menthone. In addition, dihydrojasmone and terrein that had never been reported in literature have been identified.

由GC-MS鑒定出揮發(fā)油的主要有效成分是胡薄荷酮和薄荷酮美国少妇a级，并鑒定出了二氫茉莉酮免费激情在线视频国产、土曲霉酮等文獻(xiàn)未曾報(bào)道過的成分黄色视频在线免费观看无码高清强奸。

By using two-stage separations indicates that, the content of total ketones compound by one stage separation is 12.14%, far lower than 54.95% by two-stage separations, and the content of pulegone and menthone increases from 3.37% and 3.46% by one-stage separation to 19.34% and 22.95% by two-stage separations respectively. But the content of the long chain unsaturated fatty acid and its ester ingredient reduces from 41.58% and 18.88% by one stage separation method to 29.06% and 9.86% by two-stage separations method respectively, also the phenol compound by two-stage separations method can been separated completely.

對(duì)荊芥揮發(fā)油采用兩級(jí)分離的研究表明：酮類化合物的總含量由二級(jí)分離的54.95%遠(yuǎn)高于一級(jí)分離的12.14%，其中胡薄荷酮和薄荷酮的含量分別由一級(jí)分離的3.37%和3.46%增加到二級(jí)分離的19.34%和22.95%亚洲国产精品日本一区二区，而長鏈不飽和脂肪酸及其酯類成分含量分別從一級(jí)分離法的41.58%和18.88%降低到二級(jí)分離法的29.06%和9.86%91人妻论坛国内入口，且二級(jí)分離法已完全除去酚類化合物。