Method for extracting solanesol from discarded tobacco leaves
A technology for discarding tobacco leaves and solanesol, applied in the field of plant chemical industry, can solve the problems of large-scale production difficulty, large solvent consumption, poor operability, etc., achieve comprehensive reuse, improve resource utilization, shorten the The effect of craft time
Inactive Publication Date: 2016-08-24
HONGYUN HONGHE TOBACCO (GRP) CO LTD
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Problems solved by technology
Commonly used techniques for extracting solanesol include column chromatography, solvent extraction, supercritical CO2 extraction, supercritical fluid extraction combined with column chromatography and modified supercritical segmental extraction. There are serious deficiencies: 1. The solvent consumption is large, resulting in waste of resources and serious environmental pollution; 2. The extraction rate and yield of the product are low; 3. The extraction process is complex, large-scale production is difficult, and the operability is not strong
[0004] my country is a big country of tobacco planting, with an annual output of 4.5-5 million tons of tobacco leaves. However, about 25% of tobacco leaves and tobacco dust that cannot be used for cigarettes are discarded, and waste tobacco leaves that are not fully utilized will not only cause waste of resources. It is a great waste, and the traditional method of dealing with waste tobacco leaves will also cause serious environmental pollution
Method used
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Embodiment
[0021] A method for extracting solanesol from waste tobacco leaves. Take 200 kilograms of tobacco leaves, pulverize them into coarse powder, add 1200 kilograms of methanol-acetone (3:7) mixed solvent, heat and reflux extraction for 4 times, and recover the extraction solvent under reduced pressure to obtain 34.7 kg of extract. Add 200 kg of ethanol to the extract, stir to dissolve, add 8.68 kg of 40% potassium hydroxide solution, feed nitrogen to replace the air in the container, adjust the amount of nitrogen feed and continue to open nitrogen to prevent air from pouring in, and heat and reflux saponification for 1 hour; Cool, add petroleum ether to the saponification solution and stir and extract three times, 50 kg each time, concentrate the petroleum ether extract under reduced pressure to obtain 15.8 kg of extract, add 50 kg of acetone-methanol (4:6) mixed solution, and cool at low temperature (-10°C) Put it under the hood for 24 hours to dewax, filter at low temperature, a...
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The invention discloses a method for extracting solanesol from discarded tobacco leaves. Solanesol has different solubilities in different organic solvents, and can be enriched in a solvent distribution ratio; and solanesol can be purified by utilizing the characteristics that pure solanesol is dissolved when heated in a solvent and is crystallized when frozen. The method comprises the following steps: extracting, saponifying, extracting, dewaxing, degreasing and purifying to obtain a solanesol finished product finally. The method for extracting solanesol from discarded tobacco leaves has the advantages of simple process, low cost, short implementation time, high efficiency and low energy consumption, and can be put into industrialization and large-scale production easily.
Description
technical field [0001] The invention belongs to the technical field of phytochemicals, and in particular relates to a method for extracting solanesol from waste tobacco leaves. Background technique [0002] Solanesol is a kind of terpene compound commonly found in plant leaves. It mainly exists in the chloroplast and fibrous tissue of Solanaceae plants, and its content is prominent in tobacco leaves, potato leaves (about 1.5%) and mulberry leaves. , and its content in tobacco leaves is as high as 3% of the dry weight of the leaves. Solanesol itself not only has antibacterial, anti-inflammatory, and hemostatic effects, but also has certain curative effects on muscular dystrophy, myocardial insufficiency, anemia, diabetes, high blood pressure, and asthma. Most importantly, solanesol is also a key intermediate in the synthesis of ubiquinone compounds such as coenzyme Q10 and vitamin K2; anti-tumor drugs, anti-ulcer drugs and drugs for the treatment of cardiovascular and cerebr...
Claims
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IPC IPC(8): C07C29/74C07C33/02
CPCC07C29/74C07C33/02
Inventor 汪显国武怡周宏志李庆华王慧唐丽和红兵杨晶津陈兴李慧天
Owner HONGYUN HONGHE TOBACCO (GRP) CO LTD