挥发油

The processes for extraction of Forutunella Essence, Magnolia Denudate Desr Oil, Lentinus Edode Flavor were studied, especially for the process of supercritical CO_2 extraction.

实验评估与选择了CO_2超临界萃取法萃取金柑挥发油的最佳工艺条件：萃取釜压20Mpa；萃取釜温35℃；CO_2流量7kg／h。

Diallyl disulphide was identified in these three cultures, which is a representative matter in volatile of garlic and has antimicrobial activity. So this matter is concluded one of the allelochemicals.

同时在这3种栽培方式中均检测到了二烯丙基二硫化物，这种物质是大蒜挥发油中典型的物质，且具有良好的杀菌作用，因此认为大蒜根系分泌也能释放这种物质。

MethodsThe constituents of volatile oil from Dictamnus dasycarpus was investigated by SPME/GC/MS.

方法利用固相微萃取/气相色谱/质谱联用技术对白鲜皮的挥发油成分进行了研究。

objectiveTo analyze constituents of volatile oil from Dictamnus dasycavpus.

目的分析白鲜皮挥发油成分。

ConclusionThe main constituents in the essential oil from Dictamnus dasycarpus.

结论白鲜皮挥发油主要化学成分是白菖油烯（27.17%）、芳脑醇

The main chemical constituents from dipsacaceae species were triterpenoid saponins,iridoidal glycosides,flavonoids,essential oils,etc.

该科植物主要含三萜皂苷、环烯醚萜苷、黄酮、挥发油等类型的化合物。

The volatile oil was obtained from the seed of Fibraurea recite pierre by steam distillation. Twenty-six chemical constituents were identified by CC-MS. The relative content of docosane was the highest.

采用水蒸气蒸馏法提取大黄藤种子挥发油，结果表明：所得提取物经CC-MS检测出26种化合物，其中相对含量最高的化合物是二十二烷。

The method is reliable, stable and reproducible' therefore can be applied to the analysis of volatile oil components from Dracocephalum moldavica L.

本方法稳定可靠，重现性好，适用于香青兰挥发油的化学成分分析。

Our prophase research found that A_3 was the most effective component on the inhibition of the myometrium contraction and dysmenorrheal which was related to inhibiting PGs.

我们前期的研究发现：A_3为当归挥发油中最佳抑制子宫收缩、抗痛经活性部位，其抑制子宫收缩机制可能与抑制PGs生成有关。

Objective To optimize the extraction process by determing the volatile oil yield of steam distillation and supercritical CO2 extraction from flowers of Elaeagnus angustifolia L..

目的 比较水蒸气蒸馏法和超临界CO2萃取技术从沙枣花中提取挥发油的得率，确定最佳提取工艺。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。