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Method for removing prometryn and heavy metal in porphyra

A heavy metal and promethazine technology, applied in the field of agricultural chemistry, can solve problems such as affecting the quality of laver products, destroying algal cells, and breaking laver cells, and achieves the effects of promoting high-value utilization, increasing economic benefits, and improving digestion and absorption.

Inactive Publication Date: 2017-03-22
OCEAN UNIV OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, there are few reports at home and abroad on the removal technology of pollutants in laver. Jiang Hao et al. used ultrasonic crushing technology to treat altar laver and remove heavy metals such as cadmium.
However, because the intensity of ultrasonic crushing is too high, it is easy to cause rupture of laver cells, affecting the quality of laver products, and for the fragile algae, ultrasonic crushing will seriously damage the algal cells, so the applicability of this method Not strong
For the removal technology of proturazine in laver, there is no mention in the current research

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Example 1:

[0033] Take 10g of fresh seaweed in a 500mL conical flask, add 300mL of water to clean it, and remove the sediment and miscellaneous algae in the seaweed.

[0034] Adjust the pH of the clean seawater to 4.0, add the cleaned seaweed to the seawater according to the ratio of material to liquid 1:10, and stir to mix the seaweed solution evenly.

[0035] Add 0.5% volume fraction of cellulase and pectinase composite enzyme (the ratio of cellulase and pectinase is 7:3) to the mixed laver solution while stirring, and shake the enzymatic hydrolysis to control The enzymatic hydrolysis temperature was 30°C, and the enzymatic hydrolysis time was 30 minutes.

[0036] The enzymatic hydrolyzed seaweed is obtained by filtration, washed with clean seawater to remove a small amount of enzyme liquid on the seaweed, and at the same time, the pH of the seaweed solution is washed to neutral, and the treated seaweed is used for the next processing. After drying the laver produ...

Embodiment 2

[0038] Take 10g of fresh seaweed in a 500mL conical flask, add 300mL of water to clean it, and remove the sediment and miscellaneous algae in the seaweed. Adjust the pH of the clean seawater to 4.5, add the cleaned seaweed to the seawater according to the ratio of material to liquid 1:10, and stir to mix the seaweed solution evenly.

[0039] Add 0.5% volume fraction of cellulase and pectinase composite enzyme (the ratio of cellulase and pectinase is 4:1) to the mixed laver solution while stirring, and shake the enzymatic hydrolysis to control The enzymatic hydrolysis temperature was 35°C, and the enzymatic hydrolysis time was 25 minutes.

[0040] The enzymatic hydrolyzed seaweed is obtained by filtration, washed with clean seawater to remove a small amount of enzyme liquid on the seaweed, and at the same time, the pH of the seaweed solution is washed to neutral, and the treated seaweed is used for the next processing. After drying the laver product, the detection of promethaz...

Embodiment 3

[0042] Take 10g of fresh seaweed in a 500mL conical flask, add 300mL of water to clean it, and remove the sediment and miscellaneous algae in the seaweed. Adjust the pH of the clean seawater to 5, add the cleaned seaweed to the seawater according to the ratio of material to liquid 1:8, and stir to mix the seaweed solution evenly.

[0043] To the mixed laver solution, add 0.7% volume fraction of cellulase, pectinase and papain composite enzyme (the ratio of cellulase, pectinase and papain is 5:3: 2), shake the enzymolysis, control the enzymolysis temperature to be 40°C, and the enzymolysis time to be 15 minutes. The enzymatic hydrolyzed seaweed is obtained by filtration, washed with clean seawater to remove a small amount of enzyme liquid on the seaweed, and at the same time, the pH of the seaweed solution is washed to neutral, and the treated seaweed is used for the next processing. After drying the laver product, the detection of promethazine and heavy metals was carried out...

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PUM

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Abstract

The invention belongs to the field of agricultural chemistry, and particularly relates to a method for removing prometryn and heavy metal in porphyra. The method comprises the specific steps that fresh porphyra is subjected to enzymolysis through one or more complex enzymes of cellulase, pectinase and papain, so that the prometryn and the heavy metal on the fresh porphyra can be removed. The method disclosed by the invention is combined with a conventional common-used porphyra processing technology, and only a simple removal technology link needs to be added, the prometryn and the heavy metal in the porphyra can be removed quickly and efficiently, the operation is simple, the cost is saved, pollution is not caused, besides, the removal effects are good, and influence on algae bodies is small. The method disclosed by the invention is safe, pollution-free, healthy and environmental-friendly, the quality of the porphyra is greatly improved, the economic benefits are increased, and the high-value utilization of porphyra industry is promoted.

Description

technical field [0001] The invention belongs to the field of agricultural chemistry, in particular to a method for removing promethazine and heavy metals in laver. Background technique [0002] Seaweed (Pyropia spp.) is one of the important artificially cultivated seaweeds in my country. It is rich in nutrients and delicious in taste. Its crude protein content reaches 30%-50% of its dry weight. It is rich in vitamins, dietary fiber and essential for human body. of amino acids and inorganic salts. my country's seaweed products are of high quality, moderate price, good color and taste, and have great advantages in market competition, but occasionally there are pollution problems such as pesticide residues and heavy metals, which limit the international trade of my country's seaweed products and affect my country's seaweed industry. further development. [0003] Prometryn is a commonly used triazine herbicide, originally used in aquaculture to remove harmful algae in fish, shri...

Claims

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Application Information

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IPC IPC(8): A23L17/60A23L5/20
Inventor 林洪周青付晓婷
Owner OCEAN UNIV OF CHINA
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