Method for reducing chromaticity of waste liquid in litsea cubeba essential oil

Abstract

The invention discloses a method for reducing the chromaticity of waste liquid in litsea cubeba essential oil, and the method mainly comprises the following steps: 1, adding immobilized cellulase andimmobilized glucanase into litsea cubeba essential oil extraction waste liquid, and performing stirring, wherein the amount of the immobilized cellulase is 1-40% of the weight of the litsea cubeba essential oil extraction waste liquid, the amount of the immobilized glucanase is 1-40% of the weight of the litsea cubeba essential oil extraction waste liquid, and the stirring time is 1-120 minutes; and 2, adding immobilized glucose oxidase into the mixed solution treated in the step 1, performing stirring for 1-120 minutes, and conducting standing for 30-1040 minutes, wherein the amount of the immobilized glucose oxidase is 1-40% of the weight of the mixed solution. The method has simple production and processing steps, is convenient to operate, can effectively reduce the chromaticity of thewaste liquid in the litsea cubeba essential oil, the processing cost is greatly reduced, and the product quality is stable and reliable.

Description

technical field [0001] The invention relates to the technical field of essential oil extraction, in particular to a method for reducing the chroma of waste liquid in litsea cubeba essential oil. Background technique [0002] Litsea Cubeba is a rich natural plant resource rich in citral in my country. Litsea cubeba essential oil has always been a natural plant essential oil with the largest export volume in my country. At present, the large-scale extraction method of Litsea cubeba essential oil is steam distillation, which is to pass high-temperature steam into the suspension of Litsea cubeba, and after the suspension is boiled, a mixed steam containing water vapor and Litsea cubeba essential oil is generated, and the steam is condensed After that, the water-insoluble Litsea Cubeba essential oil can be obtained. When the Litsea Cubeba Essential Oil is all steamed out, the kettle is opened to discharge the slag. At this time, a large amount of yellow waste liquid will be produ...

AI Technical Summary

Problems solved by technology

At present, the large-scale extraction method of Litsea cubeba essential oil is steam distillation, which is to pass high-temperature steam into the suspension of Litsea cubeba, and after the suspension is boiled, a mixed steam containing water vapor and Litsea cubeba essential oil is generated, and the steam is condensed After that, the water-insoluble Litsea Cubeba essential oil can be obtained. When the Litsea Cubeba Essential Oil is all steamed out, the kettle is opened to discharge the slag. At this time, a large amount of yellow waste liquid will be produced. These waste liquids are essentially the cooking water of Litsea Cubeba. After coarse filtration, it contains peel cell contents (including polysaccharides) and peel debris (containing cellulose). These waste liquids are placed in the sewage tank for a certain period of time, and the BOD and COD values ​​​​can be greatly reduced through microbial decomposition, but the chromaticity cannot be reduced. Does not meet emission standards