4 results about "Trans-anethole" patented technology

The invention discloses a multistage segmented rectification process for anise oil, which comprises the following steps: by taking crude anise oil as a raw material, carrying out multistage segmented rectification on a first-stage tower section, a middle tower section and a last-stage tower section through a rectification tower; wherein the first-stage tower section is used for removing light components, the last-stage tower section is used for refining trans-anethole, and the middle tower section is used for gradually increasing the concentration of the target component trans-anethole by gradually increasing the temperature; regular packing is adopted in the middle tower section, and the used packing is catalytic isomerization packing. The multi-stage segmented rectification process for the anise oil can be used for preparing high-purity and high-yield trans-anethole, and is short in process time, low in energy consumption and suitable for industrial production.

The invention discloses a method for extracting fennel essential oil based on a choline chloride-citric acid natural eutectic solvent. According to the method, fennel fruits are crushed, a choline chloride-citric acid NADES aqueous solution is used as a solvent, fennel essential oil is extracted by using an ultrasonic-assisted steam distillation method, the yield of the fennel essential oil and the contents of four main components such as trans-anethole are used as evaluation indexes, weights are given to the indexes by using an entropy weight method, and comprehensive scores are calculated. And finally, evaluating the anti-inflammatory activity of the fennel essential oil by using an RAW264.7 cell LPS induced anti-inflammatory model. The natural eutectic solvent is combined with the ultrasonic-assisted steam distillation technology, the extraction method has the characteristics of short extraction time, easiness in operation and low cost, and the fennel essential oil obtained by the novel extraction method is higher in yield, more in volatile components, better in anti-inflammatory activity and suitable for industrial production. A new means and a theoretical basis are provided for industrial popularization of the fennel essential oil and application of the fennel essential oil in the field of biological medicines.

Shrimp feeds and additives for preventing, reducing the occurrence of, treating, and / or facilitating recovery from white feces syndrome in shrimp. A shrimp feed additive or shrimp feed includes a phytogenic component, a nutritional component, or a combination thereof. The phytogenic component can include Quillaja saponaria, capsaicin, trans-anethole, or a combination thereof.

The present application relates to the field of preparation of perfume derivatives, and particularly relates to a preparation method of bifunctional perfume derivatives of menthol and anethole. The present application uses natural menthol and trans-anethole from anise oil as raw materials, and uses solid acid as catalyst to synthesize the target bifunctional perfume derivatives through ester exchange and condensation reaction. In the preparation method provided by the present application, no organic solvent is used, which is green and environmentally friendly, the catalyst can be recycled and used, and the method is suitable for industrial production. The product prepared has both menthol cooling and anise pungency, and the antibacterial rate of the product on escherichia coli, staphylococcus aureus and candida albicans is greater than or equal to 98%, the product has excellent thermal stability, and can be widely applied to various fields such as food, daily chemical, tobacco and medicine.