Citronella oil extraction method

A technology of citronella oil and citronella, which is applied in the direction of essential oil/fragrance, fat production, etc. It can solve the problems of accelerating plant cell rupture, easily destroying heat-sensitive substances, and losing aroma of products, and achieves short extraction time and simple and easy process The effect of running, saving energy and auxiliary materials

Inactive Publication Date: 2019-08-09
南宁辰康生物科技有限公司
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Citronella essential oil can be extracted by steam distillation, which is cheap in equipment, easy to operate, large in output, and has been applied industrially, but high temperature easily destroys heat-sensitive substances and causes partial aroma loss
Microwave-assisted steam distillation method accelerates plant cell rupture through microwave treatment. Compared with traditional steam distillation pr

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0028] Example 1 A method for extracting citronella oil, including the following steps:

[0029] 1) Cut the dried citronella stems and leaves (naturally dried or dried) into short pieces;

[0030] 2) The cut citronella stems and leaves are compressed into a filter bag and fed into the extraction kettle of the subcritical equipment;

[0031] 3) Pouring into subcritical fluid (may contain entrainer);

[0032] 4) Control pressure and temperature for static extraction and decompression separation to obtain citronella extract;

[0033] 5) Repeat step 3) and step 4) once or several times, combine the extracts, discharge, and stand for stratification. The upper oil layer is the finished citronella oil.

[0034] Further, the citronella stems and leaves are citronella varieties such as citral type and Java type.

[0035] Further, the cut short piece is 1-3 cm long.

[0036] Further, the tableting process is to press into a round cake shape (with a diameter smaller than the inner diameter of the ext...

Example Embodiment

[0040] Example 2

[0041] Cut 2kg of citronella stems and leaves into flakes, feed them after tableting treatment, with a material-to-liquid ratio of 1:1.5 (kg / L); butane is the extractant, 0.4MPa, 40℃ static extraction for 30min once. The citronella extract was obtained after the solvent was evaporated in the separation kettle, which was discharged and allowed to stand for 30 minutes to obtain 46.06 grams of the upper essential oil, and the essential oil yield was 2.30%.

Example Embodiment

[0042] Example 3

[0043] 1.5kg of citronella stems and leaves were cut into slices, fed after the tableting treatment, the material-to-liquid ratio was 1:2 (kg / L); dimethyl ether was the extractant, 0.6MPa, 30℃ static extraction once for 30min. The citronella extract was obtained after evaporating the solvent in the separation kettle, which was discharged and allowed to stand for 30 minutes to obtain 38.09 g of essential oil in the upper layer, with a yield of 2.54%.

[0044] Compared with the traditional steam method, according to the first appendix XD of the Chinese Pharmacopoeia (2010 edition), the essential oils are collected by the volatile oil tester, and the essential oil yield is 2.28%.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

Belonging to the field of fine chemicals, the invention discloses a citronella oil extraction method. The method includes: cutting a dried citronella stem leaf product into short pieces; then performing tabletting on the cut citronella stem leaf, then putting the product into a filter bag, and conducting feeding into subcritical equipment extraction kettle; pouring a subcritical fluid into the extraction kettle; and controlling the pressure and temperature for static extraction and decompression separation to obtain a citronella extract. The method provided by the invention has the advantagesof short extraction time, high extraction rate, simple and feasible process, low extraction cost, excellent product quality, environmental friendliness, industrializability, etc.

Description

technical field [0001] The invention belongs to the field of fine chemical industry and relates to a method for extracting citronella oil. Background technique [0002] Citronella, Gramineae (Gramineae) Citronella (Cymbopogon) herb. Distributed in India, Sri Lanka, Malaysia, Java to Sumatra in Indonesia, and cultivated in Guangdong, Guangxi, Yunnan, Hainan Island, and Taiwan. Its stems and leaves are the raw materials for extracting essential oils. Javanese citronella essential oil has been successfully commercialized and has a wide range of uses. It is generally used in Southeast Asia to prevent mosquitoes and insects. At the same time, citronella essential oil has been proved to have antibacterial effects and is used in agriculture such as melon and fruit preservation. In the field, it is also used to isolate citronellal, geraniol, citronellol and other components for the preparation of advanced flavors or deep processing to prepare advanced fine chemicals. [0003] Citr...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C11B9/02
CPCC11B9/022C11B9/025
Inventor 邓倩李鸿山李华杰
Owner 南宁辰康生物科技有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap