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A method for subcritical water extraction of endogenous aroma substances

A technology of aromatizing substances and subcritical water, which is applied in food science, essential oil/fragrance, fat production, etc. It can solve problems affecting extraction rate and by-product generation, and achieve the effects of improving extraction efficiency, protecting ingredients, and reducing pollution

Active Publication Date: 2016-07-20
SUZHOU ZEDAXINGBANG MEDICAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The above-mentioned patented methods are prone to high-temperature oxidation reaction in the extraction kettle, and there are irrelevant by-products, which affect the extraction rate

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Take 1 kg of 30-120 mesh tobacco raw material and put it in a 10L extraction kettle, tighten the lid of the kettle, and use high-purity nitrogen to replace the oxygen in the kettle. Use high-purity nitrogen to remove the oxygen in the deionized water in the storage tank to form deionized water. Preheat the deionized water to 90~100°C, pump it into the extraction kettle, and measure the amount of deionized water added by a flow meter to be 5kg. The extraction kettle was heated through the heating jacket of the extraction kettle at a heating rate of 5°C / 2min, the temperature was raised to 120°C, the pressure inside the extraction kettle was adjusted to 5MPa, and the extraction was carried out for 2h. Turn on the cooling liquid, cool down the extraction kettle to normal temperature, and release the extract from the bottom of the extraction kettle. Repeat the above steps, and then extract twice, the second and third extraction temperatures are respectively 130°C and 140°C. ...

Embodiment 2

[0030] Take 1 kg of 30-120 mesh tobacco raw material and put it in a 10L extraction kettle, tighten the lid of the kettle, and use high-purity nitrogen to replace the oxygen in the kettle. Use high-purity nitrogen to remove the oxygen in the deionized water in the storage tank to form deionized water, heat the deionized water to 90°C, use a pump to pump hot water into the extraction kettle, and measure the amount of deionized water added to 6kg with a flow meter. Open the jacket of the extraction kettle to heat, the heating rate is 5°C / 5min, the temperature is raised to 140°C, the pressure inside the extraction kettle is adjusted to 6MPa, and the extraction is carried out for 2h. Turn on the cooling liquid, lower the temperature of the extraction kettle to normal temperature, and release the extract from the bottom of the extraction kettle. Repeat the above steps, and extract 2 more times, and the extraction temperatures of the last two times are respectively 150°C and 160°C. ...

Embodiment 3

[0032] Take 1 kg of 30-120 mesh tobacco raw material and put it in a 10L extraction kettle, tighten the lid of the kettle, and use high-purity nitrogen to replace the oxygen in the kettle. Use high-purity nitrogen to remove the oxygen in the deionized water in the storage tank to form deionized water, heat the deionized water to 90°C, use a pump to pump hot water into the extraction kettle, and measure the amount of deionized water added to 7kg with a flow meter. Open the jacket of the extraction kettle to heat, the heating rate is 5°C / 5min, the temperature is raised to 140°C, the pressure inside the extraction kettle is adjusted to 6MPa, and the extraction is carried out for 3h. Turn on the cooling liquid, lower the temperature of the extraction kettle to normal temperature, and release the extract from the bottom of the extraction kettle. Repeat the above steps, and extract 2 more times, and the extraction temperatures of the last two times are 150°C and 170°C respectively. ...

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Abstract

The invention discloses a method for subcritical water extraction of endogenous aroma-inducing substances, comprising the following steps: (1) crushing tobacco raw materials to 30-120 meshes and then putting them into an extraction kettle, using high-purity nitrogen to replace the inside of the extraction kettle (2) Use high-purity nitrogen to remove the oxygen in the ionized water in the storage tank to form deionized water, and pump the deionized water into the extraction kettle after preliminary preheating; (3) The temperature gradient in the extraction kettle Raise the temperature to the extraction temperature of 120~200°C, adjust the pressure in the extraction kettle to 5~7MPa, after the extraction is completed, the extract is cooled by a cooler; (4) Repeat steps (2) and (3) for the second and third The extracts from the three extractions were combined. The method of the invention can effectively reduce the influence of by-products formed in the extraction kettle due to high-temperature oxidative decomposition, and the extraction rate is greatly improved.

Description

technical field [0001] The invention relates to a method for extracting endogenous tobacco aroma substances, belonging to the field of deep extraction and processing of biological substances. Background technique [0002] There are many chemical constituents in tobacco. Since the 1970s, due to the development of analytical testing techniques, chemical components in tobacco have been continuously discovered. Shi Hongzhi et al. reported in 2011 that there were 4,992 identified chemical components in tobacco leaves, of which more than 700 were related to tobacco aroma. The molecules of aromatizing substances in tobacco contain specific aromatizing functional groups such as -OH, -CO, -NH and -SH, which can produce different aromas with different stimuli to the sense of smell. According to the different functional groups of aroma substances, tobacco aroma substances can be divided into alcohols, acids, ketones, esters and terpenes. Tobacco aroma substances are mostly secondary...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A24B15/24C11B9/02
Inventor 陈勇刘雪松谈满良栾连军李杰李雪飞
Owner SUZHOU ZEDAXINGBANG MEDICAL TECH
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