CN115785196A - Method for extracting porphyra haitanensis protein by ultrasonic-assisted wall breaking - Google Patents

Method for extracting porphyra haitanensis protein by ultrasonic-assisted wall breaking Download PDF

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CN115785196A
CN115785196A CN202211647476.5A CN202211647476A CN115785196A CN 115785196 A CN115785196 A CN 115785196A CN 202211647476 A CN202211647476 A CN 202211647476A CN 115785196 A CN115785196 A CN 115785196A
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protein
porphyra haitanensis
ultrasonic
wall breaking
solution
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徐海菊
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Taizhou Vocational College of Science and Technology
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
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Abstract

The invention discloses a method for efficiently extracting porphyra haitanensis protein by ultrasonic-assisted wall breaking. The method comprises the following steps: s1: pretreating porphyra haitanensis; s2: processing porphyra haitanensis by ultrasonic-assisted wall breaking; s3: purifying crude porphyra haitanensis protein; s4: drying the crude protein of the porphyra haitanensis to obtain a finished product. The method has the advantages that the porphyra haitanensis protein is extracted by an ultrasonic-assisted aqueous solution extraction method, the permeability of cell membranes is changed by ultrasonic waves, the molecular movement rate is accelerated, the mutual collision of molecules is promoted, the dissolution of the protein is accelerated, and the product extraction rate is 50-58%; the protein is precipitated by a sulfuric acid salting-out method, the dissociation of the protein is inhibited, and the recovery rate of the protein is 72-85%.

Description

Method for extracting porphyra haitanensis protein by ultrasonic-assisted wall breaking
Technical Field
The invention belongs to the technical field of marine algae protein extraction, and particularly relates to a method for extracting porphyra haitanensis protein by ultrasonic-assisted wall breaking.
Background
In recent years, with the continuous progress of cultivation technology and the gradual expansion of cultivation scale, people are attracted by the processing and utilization of porphyra haitanensis. At present, researches on porphyra haitanensis-derived active substances focus on extraction and activity researches of terpenoids and polysaccharides, and researches on porphyra haitanensis proteins and polypeptides are few. Therefore, the development of an efficient porphyra haitanensis protein extraction method has an important promotion effect on the development and utilization of porphyra haitanensis.
Since Porphyra haitanensis has tough cell wall, the extraction method can not achieve good extraction effect. In the extraction process of the porphyra haitanensis protein, the rigid cell wall is efficiently broken, which becomes the key of the extraction technology. In addition, the protein extract contains a large amount of polysaccharides, and the conventional centrifugal precipitation and isoelectric precipitation cannot realize good separation of protein and impurities.
Disclosure of Invention
The invention aims to provide a method for extracting porphyra haitanensis protein by ultrasonic-assisted wall breaking, which has the characteristics of time saving and high efficiency.
In order to achieve the purpose, the method for extracting the porphyra haitanensis protein by ultrasonic-assisted wall breaking comprises the following specific steps:
s1: the pre-treatment of the porphyra haitanensis,
drying porphyra haitanensis in a constant-temperature drying oven at the temperature of 55-70 ℃ until the quality is constant;
pulverizing dried Porphyra haitanensis with high speed pulverizer, sieving with 200 mesh sieve, and sealing and storing at-20 deg.C (storage time, whether storage time is related to extraction rate or extraction efficiency);
s2: the porphyra haitanensis is treated by ultrasonic-assisted wall breaking,
preparing porphyra haitanensis powder into a solution (whether a solvent is water or not), adjusting the pH value to 6.0-8.0, and performing auxiliary treatment by adopting ultrasonic waves, wherein the ultrasonic frequency is 10-15 KHz, the mode is intermittent ultrasonic, the ultrasonic generation time and the ultrasonic interval time are both 6-8 s, the ultrasonic power is in the range of 800-1500W, and the ultrasonic whole-course time is 40-80 min; centrifuging for the first time after the ultrasonic treatment is finished, and taking supernatant;
s3: purifying the crude protein of the porphyra haitanensis,
under the ice bath condition, slowly adding ammonium sulfate powder into the supernatant while stirring until the saturation reaches 50-70%, standing for 2h, centrifuging the solution after ammonium sulfate precipitation again, and taking the precipitate to obtain crude protein;
re-dissolving the precipitate in double distilled water, regulating the pH value of the solution to be neutral, and dialyzing in a 200 Da dialysis bag for 24-48 h for desalting;
s4: the crude protein of the porphyra haitanensis is dried,
carrying out vacuum rotary evaporation and concentration on the dialyzed porphyra haitanensis protein solution to collect concentrated solution;
and (3) freezing the concentrated solution in an environment of-40 to-50 ℃, and drying in a vacuum freeze dryer for 12 to 24 hours to obtain porphyra haitanensis crude protein dry powder.
Preferably, the step S2 is performed with a first centrifugation after the ultrasonic treatment, wherein the first centrifugation condition is 10000 r.min -1 、4℃、20 min。
Preferably, in the step S3, the solution after ammonium sulfate precipitation is centrifuged again under the condition of 15000 r.min -1 、4℃、15 min。
Preferentially, the porphyra haitanensis protein solution dialyzed in the step S4 is subjected to vacuum rotary evaporation concentration under the concentration condition of 45-55 ℃ until the concentration is 200-300 mg -1
The crude porphyra haitanensis protein has stronger antioxidant activity within the range of 5-50 mg/mL, ABTS free radical scavenging capacity is equivalent to 0.83 +/-0.08 mmol/L Trolox, and DPPH scavenging rate reaches 68.04 +/-0.73% when the DPPH scavenging rate is 10 mg/mL.
The method for extracting porphyra haitanensis protein by ultrasonic-assisted wall breaking has the beneficial effects that: according to the invention, through the processing processes of crushing, dissolving, ultrasonic-assisted water extraction and the like of the porphyra haitanensis, the cell wall of the porphyra haitanensis can be crushed, the dissolution of protein is promoted, the protein in the porphyra haitanensis is fully extracted, the extraction rate of the porphyra haitanensis protein is improved, the extraction time is effectively shortened, and the extraction cost is saved; the high-saturation ammonium sulfate can precipitate protein, so that the recovery rate is high; in the process of precipitating protein by an ammonium sulfate salting-out method, along with the increase of the saturation of ammonium sulfate, the recovery rate of the protein in the precipitation is increased firstly and then decreased, and the maximum value is reached when the saturation of the ammonium sulfate is 50-70 percent; according to the method, the protein content of the product is detected by a BCA kit method, and the recovery rate of the protein in the precipitate is 72-85 percent.
Drawings
FIG. 1 shows the effect of pH on the extraction rate of Porphyra haitanensis protein;
FIG. 2 shows the protein properties of Porphyra haitanensis.
Detailed Description
Example 1
The invention relates to a method for extracting porphyra haitanensis protein by ultrasonic-assisted wall breaking, which comprises the following specific steps:
s1: pretreating porphyra haitanensis, namely drying the porphyra haitanensis in a constant-temperature drying oven at the temperature of 55 ℃ until the quality is constant; pulverizing dried Porphyra haitanensis with high speed pulverizer, sieving with 200 mesh sieve, and storing at-20 deg.C under sealed condition;
s2: ultrasonic-assisted wall breaking treatment of porphyra haitanensis, preparing porphyra haitanensis powder into a solution, adjusting the pH value to 6.0, and performing auxiliary wall breaking treatment by adopting ultrasonic waves, wherein the ultrasonic frequency is 10 KHz, the mode is intermittent ultrasonic, the ultrasonic generation time and the ultrasonic interval time are both 6 s, the ultrasonic power is 1200W, and the whole ultrasonic time is 60 min; performing primary centrifugation after the ultrasonic treatment is finished, wherein the primary centrifugation condition is 10000 r.min -1 Centrifuging at 4 deg.C for 20 min, collecting supernatant, and determining protein extraction rate to be 50.11%;
s3: purifying crude protein of Porphyra haitanensis, adding ammonium sulfate powder slowly into supernatant under stirring in ice bath until saturation reaches 60%, standing for 2 hr, centrifuging again the solution after ammonium sulfate precipitation under 15000 r.min -1 Centrifuging at 4 deg.C for 15 min to obtain precipitate, measuring protein content in the residual supernatant, and calculating precipitate protein recovery rate to 72.13%; re-dissolving the precipitate in double distilled water, adjusting pH of the solution to 7.0, and dialyzing in 200 Da dialysis bag for 48 h for desalting;
s4: drying crude protein of Porphyra haitanensis, vacuum rotary evaporating and concentrating dialyzed Porphyra haitanensis protein solution to collect concentrated solution, vacuum rotary evaporating and concentrating at 45 deg.C, and concentrating to 200 mg -1 And (4) carrying out freeze vacuum drying at the cold trap temperature of-45 ℃ to obtain the porphyra haitanensis protein dry powder.
Example 2
The invention relates to a method for extracting porphyra haitanensis protein by ultrasonic-assisted wall breaking, which comprises the following specific steps:
s1: pretreating porphyra haitanensis, namely drying the porphyra haitanensis in a constant-temperature drying oven at 60 ℃ until the quality is constant; pulverizing dried Porphyra haitanensis with a high-speed pulverizer, sieving with 200 mesh sieve, and storing at-20 deg.C under sealed condition;
s2: the porphyra haitanensis is treated by ultrasonic-assisted wall breaking,preparing porphyra haitanensis powder into a solution, adjusting the pH value to 7.0, and performing auxiliary wall breaking treatment by adopting ultrasonic waves, wherein the ultrasonic frequency is 15 KHz, the mode is intermittent ultrasonic, the ultrasonic generation time and the ultrasonic interval time are both 7 s, the ultrasonic power is 1000W, and the whole ultrasonic process time is 60 min; performing primary centrifugation after the ultrasonic treatment is finished, wherein the primary centrifugation condition is 10000 r.min -1 Centrifuging at 4 deg.C for 20 min, collecting supernatant, and determining protein extraction rate to be 58.12%;
s3: purifying crude protein of Porphyra haitanensis, adding ammonium sulfate powder slowly into supernatant under stirring in ice bath until saturation reaches 65%, standing for 2 hr, centrifuging again the solution after ammonium sulfate precipitation under 15000 r.min -1 Centrifuging at 4 deg.C for 15 min to obtain precipitate, measuring protein content in the remaining supernatant, and calculating precipitate protein recovery rate to 85.16%; re-dissolving the precipitate in double distilled water, adjusting pH of the solution to 7.0, and dialyzing in 200 Da dialysis bag for 48 h for desalting;
s4: drying crude protein of Porphyra haitanensis, vacuum rotary evaporating and concentrating dialyzed Porphyra haitanensis protein solution to collect concentrated solution, vacuum rotary evaporating and concentrating at 45 deg.C, and concentrating to 200 mg -1 And (4) carrying out freeze vacuum drying at the cold trap temperature of-45 ℃ to obtain the porphyra haitanensis protein dry powder.
Example 3
The invention relates to a method for extracting porphyra haitanensis protein by ultrasonic-assisted wall breaking, which comprises the following specific steps:
s1: pretreating porphyra haitanensis, namely drying the porphyra haitanensis in a constant-temperature drying oven at 70 ℃ until the quality is constant; pulverizing dried Porphyra haitanensis with high speed pulverizer, sieving with 200 mesh sieve, and storing at-20 deg.C under sealed condition;
s2: processing porphyra haitanensis by ultrasonic wave assisted wall breaking, preparing porphyra haitanensis powder into a solution, adjusting the pH value to 7.0, and performing assisted wall breaking by ultrasonic waves, wherein the ultrasonic frequency is 15 KHz, the mode is intermittent ultrasonic, the ultrasonic generation time and the ultrasonic interval time are both 8 s, the ultrasonic power is 1500W, and the ultrasonic whole-process time is 70 min; performing primary centrifugation after the ultrasonic treatment, wherein the primary centrifugation condition is 10000 r.min -1 4 ℃ CCentrifuging for 20 min, collecting supernatant, and determining protein extraction rate to be 54.32%;
s3: purifying crude protein of Porphyra haitanensis, slowly adding ammonium sulfate powder into supernatant under stirring in ice bath until saturation reaches 70%, standing for 2 hr, centrifuging the solution after ammonium sulfate precipitation again at 15000 r.min -1 Centrifuging at 4 deg.C for 15 min to obtain precipitate, measuring protein content in the residual supernatant, and calculating precipitate protein recovery rate to 81.44%; re-dissolving the precipitate in double distilled water, adjusting pH of the solution to 7.0, and dialyzing in 200 Da dialysis bag for 48 h for desalting;
s4: drying crude Porphyra haitanensis protein, vacuum rotary evaporating dialyzed Porphyra haitanensis protein solution at 50 deg.C, concentrating to 300 mg.ml -1 And (4) carrying out freeze vacuum drying at the cold trap temperature of-45 ℃ to obtain the porphyra haitanensis protein dry powder.
Single factor test: supplement
1. Porphyra haitanensis can be added55℃~70℃Drying in a constant-temperature drying oven until the quality is constant, wherein the temperature influences the extraction rate;
2. influence of the high-speed pulverizer on the extraction rate;-20℃influence of the sealing preservation temperature on the extraction rate;
3.pH 6.0~8.0influence on extraction yield;
within the range of pH 3-9, the influence of the pH value of the solution on the extraction rate of the porphyra haitanensis protein is obvious (P < 0.05). As the pH increases, the extraction rate shows a tendency to increase first and then to equilibrate, reaching a maximum when the pH is 7.
The emulsifying activity of the porphyra haitanensis protein can reach 112.49 +/-5.33 m at the pH value of 5.5 2 The emulsion stability is 40.52 +/-1.08 min, and the protein has the potential of being developed into a natural emulsifier and can be subjected to protein modification through physical, chemical and biological methods to obtain better emulsion property.
The foam stability of the porphyra haitanensis protein reaches 80.84 +/-2.95% at the pH value of 4.5, which indicates that the protein extracted by the method has good foam stability.
4. Performing auxiliary wall breaking treatment by ultrasonic waves, wherein ultrasonic parameters influence the extraction rate;
5. influence of the first centrifugation condition on the extraction rate;
influence of re-centrifugation conditions on extraction yield;
6. the effect of ammonium sulfate powder on extraction yield;
7. and (4) measuring the protein property of the porphyra haitanensis.
The porphyra haitanensis protein has stronger antioxidant activity within the range of 5 to 50 mg/mL, the ABTS free radical scavenging capacity is equivalent to 0.83 +/-0.08 mmol/L Trolox, and the DPPH scavenging rate reaches 68.04 +/-0.73 percent when the DPPH scavenging rate is 10 mg/mL.
The isoelectric point of the porphyra haitanensis protein is 4.5.
As is clear from FIG. 2, the protein water absorption of Porphyra haitanensis was 1.797ml/g, the oil absorption was 0.998ml/g, and the water retention was 1.640g/g.

Claims (5)

1. A method for extracting porphyra haitanensis protein by ultrasonic-assisted wall breaking is characterized by comprising the following steps: the method comprises the following specific steps:
s1: the pre-treatment of the porphyra haitanensis,
drying porphyra haitanensis in a constant-temperature drying oven at the temperature of 55-70 ℃ until the quality is constant;
pulverizing dried Porphyra haitanensis with high speed pulverizer, sieving with 200 mesh sieve, and sealing and storing at-20 deg.C (whether the storage time of thermometer is related to extraction rate or extraction efficiency);
s2: the porphyra haitanensis is treated by ultrasonic-assisted wall breaking,
preparing porphyra haitanensis powder into a solution (whether a solvent is water or not), adjusting the pH value to 6.0-8.0, and performing auxiliary treatment by adopting ultrasonic waves, wherein the ultrasonic frequency is 10-15 KHz, the mode is intermittent ultrasonic, the ultrasonic generation time and the ultrasonic interval time are both 6-8 s, the ultrasonic power is in the range of 800-1500W, and the ultrasonic whole-course time is 40-80 min; centrifuging for the first time after the ultrasonic treatment is finished, and taking supernate;
s3: purifying the crude protein of the porphyra haitanensis,
under the ice bath condition, slowly adding ammonium sulfate powder into the supernatant while stirring until the saturation reaches 50-70%, standing for 2h, centrifuging the solution after ammonium sulfate precipitation again, and taking the precipitate to obtain crude protein;
re-dissolving the precipitate in double distilled water, regulating the pH value of the solution to be neutral, and dialyzing in a 200 Da dialysis bag for 24-48 h for desalting;
s4: the crude protein of the porphyra haitanensis is dried,
carrying out vacuum rotary evaporation and concentration on the dialyzed porphyra haitanensis protein solution to collect concentrated solution;
and (3) freezing the concentrated solution in an environment of-40 to-50 ℃, and drying in a vacuum freeze dryer for 12 to 24 hours to obtain porphyra haitanensis crude protein dry powder.
2. The method for extracting porphyra haitanensis protein by ultrasonic-assisted wall breaking as claimed in claim 1, wherein the method comprises the following steps: in the step S2, the first centrifugation is carried out after the ultrasonic treatment, and the first centrifugation condition is 10000 r.min -1 、4℃、20 min。
3. The method for extracting porphyra haitanensis protein through ultrasonic-assisted wall breaking according to claim 1, wherein the method comprises the following steps: in the step S3, the solution after the ammonium sulfate precipitation is centrifuged again, and the centrifugation condition is 15000 r.min -1 、4℃、15 min。
4. The method for extracting porphyra haitanensis protein by ultrasonic-assisted wall breaking as claimed in claim 1, wherein the method comprises the following steps: and (5) performing vacuum rotary evaporation and concentration on the porphyra haitanensis protein solution dialyzed in the step (S4) under the concentration condition of 45-55 ℃ to 200-300 mg/ml -1
5. The method for extracting porphyra haitanensis protein by ultrasonic-assisted wall breaking as claimed in claim 1, wherein the method comprises the following steps: the porphyra haitanensis crude protein has stronger antioxidant activity within the range of 5 to 50 mg/mL, ABTS free radical scavenging capacity is equivalent to 0.83 +/-0.08 mmol/L Trolox, and DPPH scavenging rate reaches 68.04 +/-0.73% when the DPPH scavenging rate is 10 mg/mL.
CN202211647476.5A 2022-12-21 2022-12-21 Method for extracting porphyra haitanensis protein by ultrasonic-assisted wall breaking Pending CN115785196A (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103865973A (en) * 2014-04-03 2014-06-18 江南大学 Preparation method of porphyra protein antibacterial peptide
CN107312076A (en) * 2017-08-01 2017-11-03 中国科学院海洋研究所 A kind of method that phycoerythrin is extracted in the dry product from Porphyra yezoensis
CN109734772A (en) * 2019-03-11 2019-05-10 中国水产科学研究院南海水产研究所 A kind of extracting method of end water porphyra haitanensis protein
US20210000140A1 (en) * 2018-03-06 2021-01-07 Ciimar - Centro Interdisciplinar De Investigaçäo Marinha E Ambiental Method for obtaining proteins or a rich-protein extract from algae, extracts and uses therefore

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103865973A (en) * 2014-04-03 2014-06-18 江南大学 Preparation method of porphyra protein antibacterial peptide
CN107312076A (en) * 2017-08-01 2017-11-03 中国科学院海洋研究所 A kind of method that phycoerythrin is extracted in the dry product from Porphyra yezoensis
US20210000140A1 (en) * 2018-03-06 2021-01-07 Ciimar - Centro Interdisciplinar De Investigaçäo Marinha E Ambiental Method for obtaining proteins or a rich-protein extract from algae, extracts and uses therefore
CN109734772A (en) * 2019-03-11 2019-05-10 中国水产科学研究院南海水产研究所 A kind of extracting method of end water porphyra haitanensis protein

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
LIN WEN等: "Ultrasound-assisted extraction and in vitro simulated digestion of Porphyra haitanensis proteins exhibiting antioxidative and α-glucosidase inhibitory activity", 《JOURNAL OF FOOD MEASUREMENT AND CHARACTERIZATION》, vol. 14, 27 July 2020 (2020-07-27), pages 3291 *
徐海菊等: "坛紫菜蛋白质提取工艺优化及其特性分析", 《食品工业科技》, vol. 43, no. 12, 7 January 2022 (2022-01-07), pages 1 *

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