Research On Extraction And Production Technology From Rosa Rugosa Yuet Tu

The rose is widely regarded as the queen of fragrant flowers. Besides these, a great variety of garden roses also exist, which are wide range of different for fragrance and more for color and shape. As one of the economically most important ornamental crops, people use rose in multi-purpose such as flower arrangement, foods and spices, as well as for medicinal purposes. As an important product of Rosa Rugosa, the essential oils are also widely used for perfumes and cosmetics. Rose essential are complex mixtures which constituted by hundreds of trace components.The oils fragrance is the result of the combinations of all aromas components. Trace components are important to the oils characteristic and natural odor. Thus,, there is an important requirement that the production process of the essential oils extracted from plants is to keep the roses in the proportion of natural aromatic substances. Many different techniques have been used to extract essential oils from rose petals, e.g. steam distillation, solvent extraction, high-pressure carbon dioxide extraction and molecular distillation.Kushui is the largest production base of the rose. Rose cultivation area accounts for more than 60% of the country. But because of the backward production methods, the Rosa rugosa Yuet Tu essential is smelled bad, and not welcomed by the market.This work relies on local resources, based on the detection of rose oil, used dried rose petals for raw materials, design a new process which is in room temperature, low-pressure conditions and without water participation to extract rose products such as rose concrets, rose absolute and rose essential oils. The first step of the process is use butane as solvent, to extract rose concrets in room temperature and low-pressure conditions.Through the studies of experimental to determine the extraction condition which is in 10～20℃temperature, less than 0.4Mpa extraction pressure, the extraction rate is 0.42%.The second step is to product rose absolute using frozen centrifugation, the results of experimental is the ratio of materials and solvents from the conventional 1:9 increased to 1:1.5.Finally, in the vacuum conditions rotary evaporator rose absolute to product rose essential oils,the evaporation temperature is 80℃～90℃. Because of the low temperature extraction condition, the composition of product without chemical change,it get the rose oil in the aroma, color and purity are superior to the product that in conventional extraction methods. Under mild extraction conditions, the new process is easy to realized in industrialization. Finally, use the software Aspen Plus simulat the process of rose oil vacuum rotary distillation, using ASPEN HTFS modules plus B-Jac modules simulate the process of rotary evaporator and gas-liquid separator section, the simulation results is obtained.