Preparation method and antibacterial application of camphor tree essential oil

A technology of camphor tree and essential oil, applied in the field of separation and application, and vegetable oil extraction, can solve the problems affecting the chemical composition of the extract and the effect of application, and achieve the effects of easy scale-up production, simple operation process, and improved extraction efficiency

Pending Publication Date: 2022-05-31
DONGGUAN AGRI SCI RES CENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

According to the principle of similar miscibility, the type of solvent will affect the chemical composition of the extract, thereby affecting its application effect

Method used

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  • Preparation method and antibacterial application of camphor tree essential oil
  • Preparation method and antibacterial application of camphor tree essential oil
  • Preparation method and antibacterial application of camphor tree essential oil

Examples

Experimental program
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Effect test

Embodiment 2

[0026] The preparation of embodiment 2 camphor tree essential oil

[0027] The fresh camphor branches and leaves are dried at 55° C. for 5 hours with a heat pump dryer to a moisture content of 4%, and the dried camphor branches and leaves are pulverized through a 20-mesh sieve by a pulverizer to obtain camphor branch and leaf powder.

[0028] Put the camphor tree leaf powder into a 300-mesh filter bag and place it in the extraction tank of the subcritical extraction equipment. Use a vacuum pump to bring the system pressure to 0.01MPa, and then introduce tetrafluoroethane from the solvent tank into the extraction tank. During the period, a metering tank is used. The ratio of material to liquid is controlled to be 1:5 (mass to volume ratio kg / L), and then the extraction tank is heated to 45°C by a hot water circulation system, and the extraction time is controlled to 40min. With tetrafluoroethane, the extraction was repeated 4 times, and the extracts were combined to obtain crud...

Embodiment 3

[0030] The preparation of embodiment 3 camphor tree essential oil

[0031] Dry the fresh camphor branches and leaves at 50° C. for 6 hours with a heat pump dryer to a moisture content of 5%, and use a pulverizer to pulverize the dried camphor branches and leaves to 40 mesh.

[0032] Put the camphor tree leaf powder into a 300-mesh filter bag and place it in the extraction tank of the subcritical extraction equipment. Use a vacuum pump to bring the system pressure to 0.01MPa, and then introduce tetrafluoroethane from the solvent tank into the extraction tank. During the period, a metering tank is used. The ratio of material to liquid is controlled to be 1:6 (mass to volume ratio kg / L), and then the extraction tank is heated to 45°C by a hot water circulation system, and the extraction time is controlled to 50min. With tetrafluoroethane, the extraction was repeated 4 times, and the extracts were combined to obtain crude camphor tree oil.

[0033] Add 20 times (mass volume ratio...

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Abstract

The invention discloses a preparation method and antibacterial application of camphor tree essential oil. According to the invention, an environment-friendly solvent tetrafluoroethane is used as an extraction solvent, and the camphor tree essential oil prepared by extraction under a subcritical condition has obvious bacteriostatic activity on plant fungi and bacterial pathogens such as rhizoctonia solani, phytophthora capsici, ralstonia solanacearum or pectobacterium carotovorum due to the specific components; the method can be used in the field of crop biocontrol.

Description

technical field [0001] The invention relates to a preparation method of camphor essential oil with antibacterial activity, belonging to the field of vegetable oil extraction, separation and application. Background technique [0002] Cinnamomum camphora, also known as camphor, black camphor, camphor wood, camphor, etc., is an evergreen broad-leaved tree of the Lauraceae family, native to southeast and southwest China, Guangdong, Guangxi, Jiangxi, Fujian, Taiwan, Hunan, Hubei, Sichuan, Yunnan and other places are planted. Essential oils can be extracted from the bark, roots, stems and leaves of camphor tree, which have medicinal values ​​such as antibacterial, analgesic, anti-cancer, and anti-oxidation. [0003] The extraction methods of camphor essential oil include steam distillation, organic solvent extraction, supercritical carbon dioxide extraction, ultrasonic-assisted extraction, simultaneous distillation extraction, microwave-assisted water distillation, etc. Currently...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11B9/02
CPCC11B9/025C11B9/027Y02P20/54
Inventor 黄皓胡珊梁卫驱徐匆陈彦罗华建陈仕丽罗诗
Owner DONGGUAN AGRI SCI RES CENT
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