Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Onion oil extraction method from onion leave using supercritical carbon dioxide method

A carbon dioxide and supercritical technology, which is applied in the direction of digestive system, pharmaceutical formulations, medical preparations containing active ingredients, etc., can solve the problems of low extraction efficiency and inability to solve organic solvent residues, etc., to achieve thorough extraction, good development prospects, selective effect

Inactive Publication Date: 2009-06-17
NANJING AGRICULTURAL UNIVERSITY
View PDF0 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the extraction efficiency of the current research method is not high and cannot solve the problem of organic solvent residues

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Onion oil extraction method from onion leave using supercritical carbon dioxide method
  • Onion oil extraction method from onion leave using supercritical carbon dioxide method
  • Onion oil extraction method from onion leave using supercritical carbon dioxide method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0027] (1) Raw materials: yellow onion leaves;

[0028] (2) drying: the onion blades are naturally dried;

[0029] (3) pulverizing: the dry onion leaves are pulverized and sieved to get the onion leaf powder with particle size <40 mesh;

[0030] (4) Supercritical CO 2 Extraction: Put 100kg of the dried onion leaves into HA121-50-01 supercritical extraction device (produced by Jiangsu Nantong Huaan Supercritical Extraction Co., Ltd.), adjust the extraction temperature, extraction pressure and extraction time to make it reach the optimum extraction parameter of 37.35°C , the extraction pressure is 27.5MPa, the extraction time is 57.9min, and the onion oil crude extract is directly collected in a brown jar at the outlet of the extraction kettle;

[0031] (5) Post-treatment: evaporate ethanol, extract the crude extract twice with dichloromethane at a volume ratio of 1:1 at 25°C, add activated carbon to remove pigments, and recover dichloromethane at 42°C;

[0032] (6) with anhy...

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

The invention relates to a method of extracting onion oil from supercritical carbon dioxide onion leaves, pertaining to the field of agricultural and sideline products waste recycling and processing, which is dedicated to the development and use of onion oil. Its process includes: naturally drying and crushing the mature onion leaves, and performing supercritical carbon dioxide extraction, wherein, the extraction temperature is adjusted to 35-45 DEG C, the extraction pressure is 20-30MPa, the time is 30-60min, so as to get the onion oil with a yield ratio of 3.30-3.42 per mill. The present invention provides a method of extracting onion oil by taking the onion leaves as new resources, which has advantages of strong operability, security, less destruction of active ingredients, higher yield and good reproducibility.

Description

1. Technical field [0001] The invention relates to a method for extracting onion oil from onion leaves with supercritical carbon dioxide, belongs to the field of recovery and processing of agricultural by-products, and is specially used for the development and utilization of new onion leaf resources. 2. Background technology [0002] Onion (Allium Cepa L.), also known as onion, jade onion or bulb onion, is a worldwide vegetable of the genus Allium in the Liliaceae family. It is known as the "Queen of Vegetables" in Europe. It is rich in nutrients, including protein, sugar , crude fiber and calcium, phosphorus, iron, selenium, carotene, thiamine, riboflavin, niacin, ascorbic acid and other nutrients, have a wide range of medicinal value, medical proof onion is good for eyesight, and has a diuretic effect , phlegm, appetizing, anti-inflammatory sterilization, blood pressure stabilization, reducing vascular fragility and other effects. [0003] However, in recent years, the re...

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
Patent Type & Authority Applications(China)
IPC IPC(8): A23L1/28A23L1/212A23L1/29A61K36/8962A61P7/10A61P11/10A61P1/14A61P31/00A61P9/12A61P9/00A23L33/105
Inventor 侯喜林张亚双王建军
Owner NANJING AGRICULTURAL UNIVERSITY
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com