Influence of the amount of rennet, calcium chloride addition, temperature, and high-pressure treatment on the course of milk coagulation
Coagulated gel was characterised using an oscillation rheometer Rheostress RS 150. The influence was monitored of the additions of rennet and CaCl2, of temperature, and of high-pressure treatment on the properties of coagulated gel. Parameters of coagulation were assessed, i.e. elastic modulus G...
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| Format: | Article |
| Language: | English |
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Czech Academy of Agricultural Sciences
2002-12-01
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| Series: | Czech Journal of Food Sciences |
| Subjects: | |
| Online Access: | https://cjfs.agriculturejournals.cz/artkey/cjf-200206-0005_influence-of-the-amount-of-rennet-calcium-chloride-addition-temperature-and-high-pressure-treatment-on-the-c.php |
| _version_ | 1828009209027887104 |
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| author | A. Landfeld P. Novotná M. Houška |
| author_facet | A. Landfeld P. Novotná M. Houška |
| author_sort | A. Landfeld |
| collection | DOAJ |
| description | Coagulated gel was characterised using an oscillation rheometer Rheostress RS 150. The influence was monitored of the additions of rennet and CaCl2, of temperature, and of high-pressure treatment on the properties of coagulated gel. Parameters of coagulation were assessed, i.e. elastic modulus G', the time of the start of coagulation t0, and the time constant of congealation τ. In monitoring the influence of increasing additions of rennet and CaCl2, and of temperature increase, it was found that the time of the start of coagulation t0 and the time constant of congealation t decreased. The limiting shear storage modulus G'max was practically constant at various amounts of CaCl2 and was moderately decreasing with increasing temperature and rennet addition. This effect was possibly caused by the fact that the limiting value is a regression parameter extrapolated to infinity. The real values of the modulus for a given time increased with increasing levels of calcium chloride added. Milk treated by the pressure of 600 MPa for 10 min formed, during coagulation, a more solid gel, the shear storage modulus being, almost by 100% higher as compared with untreated milk. Value of the time constant of congealation was practically halved. |
| first_indexed | 2024-04-10T08:36:38Z |
| format | Article |
| id | doaj.art-0c6f555c0b314ed2849e1825b40f607f |
| institution | Directory Open Access Journal |
| issn | 1212-1800 1805-9317 |
| language | English |
| last_indexed | 2024-04-10T08:36:38Z |
| publishDate | 2002-12-01 |
| publisher | Czech Academy of Agricultural Sciences |
| record_format | Article |
| series | Czech Journal of Food Sciences |
| spelling | doaj.art-0c6f555c0b314ed2849e1825b40f607f2023-02-23T03:26:37ZengCzech Academy of Agricultural SciencesCzech Journal of Food Sciences1212-18001805-93172002-12-0120623724410.17221/3537-CJFScjf-200206-0005Influence of the amount of rennet, calcium chloride addition, temperature, and high-pressure treatment on the course of milk coagulationA. Landfeld0P. Novotná1M. Houška2Food Research Institute Prague, Prague, Czech RepublicFood Research Institute Prague, Prague, Czech RepublicFood Research Institute Prague, Prague, Czech RepublicCoagulated gel was characterised using an oscillation rheometer Rheostress RS 150. The influence was monitored of the additions of rennet and CaCl2, of temperature, and of high-pressure treatment on the properties of coagulated gel. Parameters of coagulation were assessed, i.e. elastic modulus G', the time of the start of coagulation t0, and the time constant of congealation τ. In monitoring the influence of increasing additions of rennet and CaCl2, and of temperature increase, it was found that the time of the start of coagulation t0 and the time constant of congealation t decreased. The limiting shear storage modulus G'max was practically constant at various amounts of CaCl2 and was moderately decreasing with increasing temperature and rennet addition. This effect was possibly caused by the fact that the limiting value is a regression parameter extrapolated to infinity. The real values of the modulus for a given time increased with increasing levels of calcium chloride added. Milk treated by the pressure of 600 MPa for 10 min formed, during coagulation, a more solid gel, the shear storage modulus being, almost by 100% higher as compared with untreated milk. Value of the time constant of congealation was practically halved.https://cjfs.agriculturejournals.cz/artkey/cjf-200206-0005_influence-of-the-amount-of-rennet-calcium-chloride-addition-temperature-and-high-pressure-treatment-on-the-c.phpcoagulationmilkrennetcalcium chloridetemperaturehigh pressureshear storage modulustime of the start of coagulationtime constant of congealation |
| spellingShingle | A. Landfeld P. Novotná M. Houška Influence of the amount of rennet, calcium chloride addition, temperature, and high-pressure treatment on the course of milk coagulation Czech Journal of Food Sciences coagulation milk rennet calcium chloride temperature high pressure shear storage modulus time of the start of coagulation time constant of congealation |
| title | Influence of the amount of rennet, calcium chloride addition, temperature, and high-pressure treatment on the course of milk coagulation |
| title_full | Influence of the amount of rennet, calcium chloride addition, temperature, and high-pressure treatment on the course of milk coagulation |
| title_fullStr | Influence of the amount of rennet, calcium chloride addition, temperature, and high-pressure treatment on the course of milk coagulation |
| title_full_unstemmed | Influence of the amount of rennet, calcium chloride addition, temperature, and high-pressure treatment on the course of milk coagulation |
| title_short | Influence of the amount of rennet, calcium chloride addition, temperature, and high-pressure treatment on the course of milk coagulation |
| title_sort | influence of the amount of rennet calcium chloride addition temperature and high pressure treatment on the course of milk coagulation |
| topic | coagulation milk rennet calcium chloride temperature high pressure shear storage modulus time of the start of coagulation time constant of congealation |
| url | https://cjfs.agriculturejournals.cz/artkey/cjf-200206-0005_influence-of-the-amount-of-rennet-calcium-chloride-addition-temperature-and-high-pressure-treatment-on-the-c.php |
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