分阶段接收馏出液还可在总产率不变的情况下得到相当比例的高质量的山苍子油。
Besides, Litsea cubeba oil of high quality may be extracted from distillate obtained from different stages without changing the total yield.
采用微波辐照技术从山苍子中提取制备柠檬醛,使山苍子精油的提取率较传统的直接水蒸气蒸馏法平均提高36.5%以上。
By microwave irradiation, the citral was obtained from Litea cubeba fruits, the yield was risen in average 36.5% than by traditional distillation in a current of steam.
本文对利用山苍子油中柠檬醛合成柠檬腈香料进行了新探和改进。
The synthesis of lemonile perfume from litsea cubeba oil is newly studied and re-formed.
简略叙述了甲基紫罗兰酮的香气特征及其在香精方面的应用,主要介绍了从山苍子精油中提取柠檬醛来合成甲基紫罗兰酮的方法。
The aroma characteristic of methyl ionone and its application in essence is outlined briefly. The synthetic method of methyl ionone by using citral from litsea cubeba oil is mainly introduced.
采用减压间歇精馏方法,对从天然产物山苍子油中提取柠檬醛产品的精制过程进行了研究。
The refining process of citral product from natural litsea cubeba was studied by means of vacuum batch distillation.
实验结果表明,超声波法可以提高山苍子油的得率,此外山苍子粗油具有较好的抗氧化作用,可以有效的清除羟自由基、超氧自由基。
The result was as the following: the extracting rate of Litsea Cubeba oil was enhanced by ultrasonic, Litsea Cubeba oil has a great effect on the elimination of free radical.
山苍子油的用途十分广泛,特别是其主要成份柠檬醛的深加工产品。
The Litsea cubeba oil has wide USES, especially deep-processed products of its citral, which is the main element of Litsea cubeba oil.
利用山苍子油合成了紫罗兰酮,并采取正交设计进行了条件优化试验,得出了合成的最佳反应条件.。
The ionone was synthesize form litsea cubeba oil, the optimal experiments of reaction conditions were carried by orthogonal test, the optimum synthesizing conditions were obtained.
目的:研究山苍子水提物柠檬醛的抗哮喘作用及其机理。
AIM: To study antiasthmatic effect of citral from aqueous extract of fruit of cubeb litsea tree and its mechanism.
估算了山苍子油组分的热容,计算了山苍子油组分的蒸发热。
A method for estimating heat of components of litsea cubeba oil was proposed.
实验结果表明,超声波法可以提高山苍子油的得率,山苍子粗油可以有效清除羟自由基、超氧自由基。
The results showed that the extracting rate of Litsea Cubeba oil was enhanced by ultrasonic, and Litsea Cubeba oil has a great effect on the elimination of free radical.
从而为通过水蒸气精馏和真空精馏从山苍子油中单离柠檬醛产品提供必要的理论依据。
These results provided the necessary theoretical basis for seperating citral from Litsea citrata oil and designing the distillation column.
从山苍子提取出的柠檬醛,与硫酸羟胺反应生成柠朦肟,脱水后可得到柠檬腈。
Lemonile was manufactured by the dehydration of citral oxime obtained by the reaction of hydroxylamine sulfuride and citral abstracted from litsea cubeba oil.
本文介绍用PEG - 20 M、OV- 101毛细管柱分离,以气相色谱与质谱联用检测的方法对我省山苍子精油的化学成分进行分析研究。
In this paper, method of PEG-20M and OV-101 Stainless Capilliary Column on GC-MS is adopted to analyse and study the chemical components of essential oil of Litsea cubeba Pers. in Jiangxi province.
对山苍子油蒸馏提取柠檬醛的工艺过程进行热量衡算,给出了原料和能量消耗计算结果。
The heat balance of technological process for distill citrals out from litsea cubeba oil has been developed, which shows that the consumptions of the rectifying energy were relatively small.
目的探讨白念珠菌对山苍子油诱导耐药实验的反应情况,进一步评价山苍子油抗念珠菌的作用及临床应用价值。
Objective To investigate whether its likely to induce Lisea cubeba oil-resistant Candida albicans mutations in vitro, in order to give further evaluations of its antifungal actions for clinical use.
目的探讨白念珠菌对山苍子油诱导耐药实验的反应情况,进一步评价山苍子油抗念珠菌的作用及临床应用价值。
Objective To investigate whether its likely to induce Lisea cubeba oil-resistant Candida albicans mutations in vitro, in order to give further evaluations of its antifungal actions for clinical use.
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