CN101766313B - Lead removal method for porphyra haitanensis - Google Patents
Lead removal method for porphyra haitanensis Download PDFInfo
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- CN101766313B CN101766313B CN2010100397361A CN201010039736A CN101766313B CN 101766313 B CN101766313 B CN 101766313B CN 2010100397361 A CN2010100397361 A CN 2010100397361A CN 201010039736 A CN201010039736 A CN 201010039736A CN 101766313 B CN101766313 B CN 101766313B
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Abstract
The invention discloses a lead removal method for porphyra haitanensis, which includes that fresh porphyra haitanensis and deionized water in weight volume ratio of 4.5-5.5:25 are placed in a container, the container is moved to an ultrasonic wave exactor for performing ultrasonic treatment on the porphyra haitanensis with the ultrasonic lasting time of 0.3-0.6 and interval of 0.7-0.4 sec and at the ultrasonic temperature of 25-45 DEG C and ultrasonic frequency of 25 KHz, and the total ultrasonic treatment time is 15-25 min; after the ultrasonic treatment with specific conditions, the lead removal rate of porphyra haitanensis can reach more than 92%, and the lead residual quantity of porphyra haitanensis is lower than the national standard requirement, the harmfulness to people on having porphyra haitanensis, in particular to children is reduced; besides, the lead removal method has no pollution to porphyra haitanensis, has slight influence on the quality of porphyra haitanensis, shorter removal time, high speed and higher removal rate.
Description
Technical field
The present invention relates to the heavy metal removing technology in the food, be specifically related to removal methods plumbous in a kind of porphyra haitanensis.
Background technology
Porphyra haitanensis (Porphyra haitanensis) belongs to the former Rhodophyceae of Rhodophyta (Rhodophyta) (Protoflorideophyceae) Bangiales section (Bangiaceae) Porphyra (Porphyra) algae, is one of two main kinds of China artificial cultivation laver.Porphyra haitanensis has important edible and economic worth, also is China's Coastal Areas main exit characteristic agricultural product.But along with developing rapidly of adjacent harbor work's agricultural production; The coastal ocean environmental pollution is serious day by day; The content overproof problem that causes exporting heavy metal element in the marine product (like chromium, cadmium, lead and arsenic etc.) occurs again and again; Influence especially children healthy of people, also restricted the outlet of jar laver product.Therefore set up pollution-free, quick, removal efficiency preferably in the porphyra haitanensis removal methods of heavy metal element seem particularly important.
Remove Study on Technology with regard to heavy metal element in food and the bulk drug at present, domestic scholars is primarily aimed in the Chinese herbal product heavy metal removing technology and has carried out research.(South China Science & Engineering University's journal, 2005,33 (6): 59～62) having studied with the sodium diethyldithiocarbamate is compounding ingredient, supercritical CO like Dang Zhi etc.
2Extraction reduces the method for the contents of heavy metal elements in the Pogostemon cablin.Good earlier (Chinese patent drug, 2005,27 (12): 1376～1379) discover that the heavy metal element that exceeds standard that macroporous chelate resin D401 and D402 can be used in the Chinese medicine crude extract removes of waiting of king.(Chinese patent drug, 2001,23 (4): 243～245) studied the flocculate with chitosan fining agent and be used for removing zinc, manganese, calcium and the lead content made from extra care Chinese traditional medicine water extract such as Zhang Tong.
Summary of the invention
Technical problem to be solved by this invention provides a kind of pollution-free, quick, removal efficiency plumbous removal methods in the porphyra haitanensis preferably.
The present invention solves the problems of the technologies described above the technical scheme that is adopted: the removal methods of lead in a kind of porphyra haitanensis; Volume ratio 4.5～5.5 by weight: 25 ratio, bright porphyra haitanensis and deionized water are put into container, and said container is moved in the Extraction by Ultrasound appearance; In ultrasonic temperature is 25～45 ℃; Supersonic frequency is under the condition of 25KHz, with ultrasonic 0.3～0.6 second, rests the interval ultrasonic power of 0.7～0.4 second (being that pulse duty factor is 0.3～0.6); Porphyra haitanensis in the container is carried out sonicated, and ultrasonic total time is 15～25 minutes; The Extraction by Ultrasound appearance is available from the new sesame bio-instruments in Ningbo limited company, and model is SB1200T, and frequency specification is 25KHz/45KHz.
Ultrasonic power is ultrasonic 0.5 second at interval, rests 0.5 second; Ultrasonic power is better to the removal effect of lead at interval for this.
Ultrasonic temperature is 35 ℃, and ultrasonic total time is 20 minutes, and under this ultrasonic temperature and the ultrasonic total time condition, operative temperature is lower, and ultrasonic time is few, and is few to the influence of porphyra haitanensis composition, and plumbous removal efficiency is still higher, is selection more excellent when removing lead therefore.
Compared with prior art, the invention has the advantages that removal methods plumbous in a kind of porphyra haitanensis, volume ratio 4.5～5.5 by weight: 25 ratio; Bright porphyra haitanensis and deionized water being put into container, container is moved in the Extraction by Ultrasound appearance, is 25～45 ℃ in ultrasonic temperature; Supersonic frequency is under the condition of 25KHz, with ultrasonic 0.3～0.6 second, rests 0.7～0.4 second interval ultrasonic power; Porphyra haitanensis in the container is carried out sonicated, and ultrasonic total time is 15～25 minutes; Like this after the sonicated of above-mentioned condition and mode, removal efficiency plumbous in the porphyra haitanensis can reach more than 92%, make residual quantity plumbous in the porphyra haitanensis be lower than national standard algae goods sanitary standard or food in the pollutant requirement of limiting the quantity of; Reduced of the harm of edible back to people especially child's torso; This method does not pollute porphyra haitanensis, the quality of porphyra haitanensis is also influenced seldom, and remove time less; Speed is fast, and removal efficiency is higher.Therefore the present invention is a kind of pollution-free, quick, removal efficiency plumbous removal methods in the porphyra haitanensis preferably.
The specific embodiment
Below in conjunction with embodiment the present invention is described in further detail.
Embodiment
The bright porphyra haitanensis of 5 grams is put into conical flask, add 25 ml deionized water, then conical flask is moved in the Extraction by Ultrasound appearance; In ultrasonic temperature was 35 ℃, and supersonic frequency is under the condition of 25KHz, with ultrasonic 0.5 second; Rest 0.5 second interval ultrasonic power; Porphyra haitanensis in the container is carried out sonicated, and ultrasonic total time is 20 minutes, obtains removal effect and takes off plumbous porphyra haitanensis preferably; Also can remove simultaneously other heavy metal of part.
In the foregoing description, ultrasonic power also can be ultrasonic 0.3 second at interval, rests 0.7 second, or is ultrasonic 0.6 second, rests 0.4 second etc.; Ultrasonic temperature also can be 30 ℃, 25 ℃ or 45 ℃ etc.; Ultrasonic total time also can be 15 minutes or 25 minutes.
Test example
With bright porphyra haitanensis with take off plumbous porphyra haitanensis and use following method processing and detecting respectively: accurate weighing 0.2g, put into digester after the drying, add 6ml 65%HNO in the digester
3With 2ml 30%H
2O
2, leave standstill digestion 3-4h.Digester moves into the microwave digestion appearance, power setting 1200W, 100 ℃ of temperature, digestion 10min; Adjusting power is to 1500W, and 180 ℃ of temperature digest 10min; Adjusting power is to 650W, and 100 ℃ of temperature digest 10min, colourless, the clarification of digestive juice.The digester cooling, digestive juice and rinse liquid are transferred to the 25ml volumetric flask, and high purity water is settled to 25ml, and the ICP-OES method is measured lead content.Measure the result: bright porphyra haitanensis lead content is 2.0627/mgkg
-1, taking off plumbous porphyra haitanensis lead content is 0.1625/mgkg
-1, being lower than 1.0 standards of GB, removal efficiency is 92.1%.
Above-mentioned microwave digestion appearance is available from U.S. CE M company, and inductively coupled plasma optical emission spectroscopy (ICP-OES) is available from U.S. Perkin Elemer company.
Above-mentioned bright porphyra haitanensis picks up from Jiangsu.
Claims (3)
1. plumbous removal methods in the porphyra haitanensis is characterized in that volume ratio 4.5～5.5 grams by weight: 25 milliliters ratio, bright porphyra haitanensis and deionized water are put into container; Said container is moved in the Extraction by Ultrasound appearance, is 25～45 ℃ in ultrasonic temperature, and supersonic frequency is under the condition of 25KHz; With ultrasonic 0.3～0.6 second; Rest 0.7～0.4 second interval ultrasonic power, the porphyra haitanensis in the container is carried out sonicated, ultrasonic total time is 15～25 minutes.
2. the removal methods of lead in a kind of porphyra haitanensis as claimed in claim 1 is characterized in that ultrasonic power is ultrasonic 0.5 second at interval, rests 0.5 second.
3. the removal methods of lead is characterized in that ultrasonic temperature is 35 ℃ in a kind of porphyra haitanensis as claimed in claim 1, and ultrasonic total time is 20 minutes.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010100397361A CN101766313B (en) | 2010-01-08 | 2010-01-08 | Lead removal method for porphyra haitanensis |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010100397361A CN101766313B (en) | 2010-01-08 | 2010-01-08 | Lead removal method for porphyra haitanensis |
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| CN101766313A CN101766313A (en) | 2010-07-07 |
| CN101766313B true CN101766313B (en) | 2012-11-28 |
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| CN2010100397361A Expired - Fee Related CN101766313B (en) | 2010-01-08 | 2010-01-08 | Lead removal method for porphyra haitanensis |
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Families Citing this family (3)
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| CN104770778A (en) * | 2015-04-07 | 2015-07-15 | 莆田市汇丰食品工业有限公司 | Kelp primary-processing method |
| CN106509706A (en) * | 2016-11-04 | 2017-03-22 | 中国海洋大学 | Method for removing prometryn and heavy metal in porphyra |
| CN113749227B (en) * | 2021-07-26 | 2023-10-13 | 大连盖世健康食品股份有限公司 | Method for solving problem of exceeding of heavy metal lead in seaweed product |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101455285A (en) * | 2008-12-09 | 2009-06-17 | 首都师范大学 | Treatment method of heavy metal polluted helical alga |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101455285A (en) * | 2008-12-09 | 2009-06-17 | 首都师范大学 | Treatment method of heavy metal polluted helical alga |
Non-Patent Citations (1)
| Title |
|---|
| 崔洪友，王涛，关艳芬，刘军，沈忠耀.用超临界CO2络合萃取法脱除中成药中的重金属.《清华大学学报（自然科学版）》.2001,第41卷(第12期),全文. * |
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Granted publication date: 20121128 Termination date: 20140108 |