CN101849595B - Method for reducing pesticide residue in instant tea by resin adsorption method - Google Patents
Method for reducing pesticide residue in instant tea by resin adsorption method Download PDFInfo
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- CN101849595B CN101849595B CN2010103011334A CN201010301133A CN101849595B CN 101849595 B CN101849595 B CN 101849595B CN 2010103011334 A CN2010103011334 A CN 2010103011334A CN 201010301133 A CN201010301133 A CN 201010301133A CN 101849595 B CN101849595 B CN 101849595B
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Abstract
The invention provides a method for reducing pesticide residue in instant tea by a resin adsorption method, belonging to the control field of tea deep processing sanitation, quality and safety. The method mainly comprises allowing the instant tea concentrated solution with pesticide residues, the solution concentration being 8%, to pass through an absorption column containing the pesticide residue adsorption resin at the temperature of 40 DEG C in 10ml/min of flow velocity, and the volume of the processed instant tea concentration solution is 16 times that of the adsorption resin; and the absorption desorption rate of the pesticide residue of the instant tea processed by the resin absorption achieves 97.29%, and the process has influence on biochemistry quality of the instant tea power.
Description
Technical field
The invention belongs to tealeaves deep processing quality and safety control field, more specifically relate to a kind of method that reduces persticide residue in the instant tea,
Background technology
The tealeaves hygienic quality is directly connected to consumer's physical condition, and along with the enhancing of growth in the living standard and health perception, people have higher requirement to the hygienic quality of tealeaves.In recent years; Each tealeaves importer has formulated strict more Green Trade Barrier with the area; Import tealeaves is formulated stricter, quality safety standard widely, further increased the kind of tealeaves check agricultural chemicals, reduced maximum persticide residue (MRL) index; Therefore, how research reduces that persticide residue has great importance in the instant tea.
Adsorbing separation only is used for hygroscopic desiccation, deodorization, decolouring, drink water purifying the earliest, and experience shows that adsorption technology can be used for removing residues of pesticides.The resin adsorption method degraded is removed residues of pesticides in existing research of fruit juice production industry and realization suitability for industrialized production; Utilization macroporous absorbent resins such as all first Xin carry out absorption degradation to the methamidophos residue agricultural chemicals in the cider; Even draw the acephatemet that has low concentration in the fruit juice, in adsorption process, also can effectively be controlled within the allowed band by resin.
Summary of the invention
The present invention uses the method for resin adsorption to remove or reduce the method for residues of pesticides in the instant tea, and agricultural residual polymeric adsorbent kind and the absorbing process parameter best to the residues of pesticides adsorption effect is provided, the problem of remains of pesticide in the instant tea in the solution prior art.
The method of residues of pesticides in the reduction instant tea of the present invention: adopt the mode of resin adsorption that agricultural chemicals residual in the tea concentrate is carried out physical absorption.The flow velocity that flows out liquid after the resin adsorption is 10ml/min; The concentrate volume is 16 times of resin volume during resin adsorption.
The invention has the advantages that:
Use the processing mode of physical absorption to handle instant tea, do not change the biochemical quality component of instant tea, do not introduce new material, keep original quality style of instant tea as far as possible to reduce or to remove the residues of pesticides in the instant tea.
Description of drawings
Fig. 1 is a process chart of the present invention.
The specific embodiment
Below in conjunction with embodiment, prove absolutely the present invention.
Embodiment
Tea concentrate of the present invention is the concentrate after concentration technology is handled in the instant tea powder process of manufacture.
Before resin adsorption, the concentration that the tea concentrate is handled in control is 8%, and temperature is 40 ℃.This control is treated to: through dilution process adjustment tea concentrate weight concentration to 8%, and to be heated to temperature be 40 ℃
Polymeric adsorbent of the present invention adopts HPD-950 residues of pesticides polymeric adsorbent (this polymeric adsorbent is the HPD-950 type macroporous absorbent resin that Cangzhou precious grace chemical industry Co., Ltd produces, and is used to absorb remains of pesticide).
The resin that resin adsorption adopts carries out preliminary treatment before using, and it is for use in the adsorption column to adopt wet method dress post mode that resin is packed into.Adsorption column specification: diameter: highly=1: 25.
During resin adsorption: the flow velocity that flows out liquid after the resin adsorption is 10ml/min; The concentrate volume is 16 times of resin volume during resin adsorption.
Adsorbing and removing rate through its persticide residue of instant tea powder after the above resin adsorption processing reaches 97.29%, and this processing simultaneously has no adverse effects to the biochemical quality of instant tea powder.
Claims (1)
1. a method that reduces residues of pesticides in the instant tea is characterized in that: adopt the mode of resin adsorption that agricultural chemicals residual in the tea concentrate is carried out physical absorption;
Said polymeric adsorbent adopts HPD-950 residues of pesticides polymeric adsorbent, and promptly HPD-950 type macroporous absorbent resin is used to absorb remains of pesticide; Said polymeric adsorbent carries out preliminary treatment before using, and it is for use in the adsorption column to adopt wet method dress post mode that resin is packed into; Said adsorption column specification: diameter: highly=1:25;
Before the said resin adsorption, take the tea concentrate behind the process concentration technology in the instant tea powder process, the concentrate weight concentration that will handle through dilution process control is 8%, and is heated to 40 ℃;
The flow velocity that flows out liquid after the said resin adsorption is 10ml/min;
The concentrate volume is 16 times of resin volume during said resin adsorption.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010103011334A CN101849595B (en) | 2010-02-03 | 2010-02-03 | Method for reducing pesticide residue in instant tea by resin adsorption method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010103011334A CN101849595B (en) | 2010-02-03 | 2010-02-03 | Method for reducing pesticide residue in instant tea by resin adsorption method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101849595A CN101849595A (en) | 2010-10-06 |
| CN101849595B true CN101849595B (en) | 2012-08-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010103011334A Active CN101849595B (en) | 2010-02-03 | 2010-02-03 | Method for reducing pesticide residue in instant tea by resin adsorption method |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104642614B (en) * | 2015-03-23 | 2018-01-05 | 大闽食品（漳州）有限公司 | A kind of reduction instant tea includes the method for the heavy metal ion content including arsenic, lead |
| CN104839378A (en) * | 2015-04-27 | 2015-08-19 | 福建海峡生物工程有限公司 | Tea pesticide residue removing process |
| CN116058463B (en) * | 2021-10-29 | 2024-05-24 | 中国医学科学院药用植物研究所 | Method for removing pesticide residues in wolfberry extract |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1359696A (en) * | 2000-12-21 | 2002-07-24 | 中国科学院沈阳应用生态研究所 | Process for removing residual agricultural chemical from ginseng |
| CN1833748A (en) * | 2006-02-28 | 2006-09-20 | 南开大学 | Method of removing pesticide residual in natural extracts by adsorbing resin process |
| CN101176491A (en) * | 2006-11-11 | 2008-05-14 | 大闽食品（漳州）有限公司 | Method for processing instant tea powder without pesticide residue |
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2010
- 2010-02-03 CN CN2010103011334A patent/CN101849595B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1359696A (en) * | 2000-12-21 | 2002-07-24 | 中国科学院沈阳应用生态研究所 | Process for removing residual agricultural chemical from ginseng |
| CN1833748A (en) * | 2006-02-28 | 2006-09-20 | 南开大学 | Method of removing pesticide residual in natural extracts by adsorbing resin process |
| CN101176491A (en) * | 2006-11-11 | 2008-05-14 | 大闽食品（漳州）有限公司 | Method for processing instant tea powder without pesticide residue |
Non-Patent Citations (1)
| Title |
|---|
| 陈艳立等.吸附树脂法去除中药提取物中农药残留的研究.《中草药》.2005,第36卷120-122. * |
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| CN101849595A (en) | 2010-10-06 |
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