An inhibitive determination method for heavy metals using tomato crude proteases
A new inhibitive heavy metals determination method using extract from Lycopersicon esculentum or tomato from has been developed. The enzyme was assayed using the casein-Coomassie-dye-binding method. In the absence of inhibitors, casein was hydrolysed to completion and the Coomassie-dye was unable to...
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| Format: | Article |
| Language: | English |
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Hibiscus Publisher
2013
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| Online Access: | http://psasir.upm.edu.my/id/eprint/6710/ http://psasir.upm.edu.my/id/eprint/6710/1/An%20inhibitive%20determination%20method%20for%20heavy%20metals%20using%20tomato%20crude%20proteases.pdf |
| _version_ | 1848840436632780800 |
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| author | G., Baskaran Sulaiman, M. H. Halmi, M. I. E. Amir Syahir, Roslan, M. A. H. Hussain, J. Shukor, M. Y. Syed, M. A. |
| author_facet | G., Baskaran Sulaiman, M. H. Halmi, M. I. E. Amir Syahir, Roslan, M. A. H. Hussain, J. Shukor, M. Y. Syed, M. A. |
| author_sort | G., Baskaran |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | A new inhibitive heavy metals determination method using extract from Lycopersicon esculentum or tomato from has been developed. The enzyme was assayed using the casein-Coomassie-dye-binding method. In the absence of inhibitors, casein was hydrolysed to completion and the Coomassie-dye was unable to stain the protein and the solution became brown. In the presence of metals, the hydrolysis of casein was inhibited and the solution remained blue. The inhibitions shown by lead, chromium and zinc were, 67.9, 53.1 and 53 %, respectively. The IC50 (concentration causing 50% inhibition) values were 1.407, 0.835 and 0.707 mg/l, respectively. The limits of quantitation (LOQ), for zinc, chromium and lead were 0.729, 0.506 and 0.541 mg/l, respectively. The limits of detection (LOD) for zinc, chromium and lead were 0.032, 0.0317 and 0.0317 mg/l, respectively. The IC50 value for zinc was much lower than the IC50 values for papain and Rainbow trout assays. The IC50 value for zinc was lower than the immobilized urease assay. Other toxic heavy metals, such as silver, arsenic, copper, mercury and cadmium, did not inhibit the crude proteolytic enzyme activity. Based on the characteristics, crude protease enzyme from L. esculentum (tomato) can be used to detect heavy metals in various samples in conjunction with the dye-binding assay. |
| first_indexed | 2025-11-15T07:27:19Z |
| format | Article |
| id | upm-6710 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T07:27:19Z |
| publishDate | 2013 |
| publisher | Hibiscus Publisher |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-67102017-10-27T08:12:00Z http://psasir.upm.edu.my/id/eprint/6710/ An inhibitive determination method for heavy metals using tomato crude proteases G., Baskaran Sulaiman, M. H. Halmi, M. I. E. Amir Syahir, Roslan, M. A. H. Hussain, J. Shukor, M. Y. Syed, M. A. A new inhibitive heavy metals determination method using extract from Lycopersicon esculentum or tomato from has been developed. The enzyme was assayed using the casein-Coomassie-dye-binding method. In the absence of inhibitors, casein was hydrolysed to completion and the Coomassie-dye was unable to stain the protein and the solution became brown. In the presence of metals, the hydrolysis of casein was inhibited and the solution remained blue. The inhibitions shown by lead, chromium and zinc were, 67.9, 53.1 and 53 %, respectively. The IC50 (concentration causing 50% inhibition) values were 1.407, 0.835 and 0.707 mg/l, respectively. The limits of quantitation (LOQ), for zinc, chromium and lead were 0.729, 0.506 and 0.541 mg/l, respectively. The limits of detection (LOD) for zinc, chromium and lead were 0.032, 0.0317 and 0.0317 mg/l, respectively. The IC50 value for zinc was much lower than the IC50 values for papain and Rainbow trout assays. The IC50 value for zinc was lower than the immobilized urease assay. Other toxic heavy metals, such as silver, arsenic, copper, mercury and cadmium, did not inhibit the crude proteolytic enzyme activity. Based on the characteristics, crude protease enzyme from L. esculentum (tomato) can be used to detect heavy metals in various samples in conjunction with the dye-binding assay. Hibiscus Publisher 2013 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/6710/1/An%20inhibitive%20determination%20method%20for%20heavy%20metals%20using%20tomato%20crude%20proteases.pdf G., Baskaran and Sulaiman, M. H. and Halmi, M. I. E. and Amir Syahir, and Roslan, M. A. H. and Hussain, J. and Shukor, M. Y. and Syed, M. A. (2013) An inhibitive determination method for heavy metals using tomato crude proteases. Asian Journal of Plant Biology, 1 (1). pp. 10-14. ISSN 2289-5868 http://journal.hibiscuspublisher.com/index.php/AJPB/article/view/15 |
| spellingShingle | G., Baskaran Sulaiman, M. H. Halmi, M. I. E. Amir Syahir, Roslan, M. A. H. Hussain, J. Shukor, M. Y. Syed, M. A. An inhibitive determination method for heavy metals using tomato crude proteases |
| title | An inhibitive determination method for heavy metals using tomato crude proteases |
| title_full | An inhibitive determination method for heavy metals using tomato crude proteases |
| title_fullStr | An inhibitive determination method for heavy metals using tomato crude proteases |
| title_full_unstemmed | An inhibitive determination method for heavy metals using tomato crude proteases |
| title_short | An inhibitive determination method for heavy metals using tomato crude proteases |
| title_sort | inhibitive determination method for heavy metals using tomato crude proteases |
| url | http://psasir.upm.edu.my/id/eprint/6710/ http://psasir.upm.edu.my/id/eprint/6710/ http://psasir.upm.edu.my/id/eprint/6710/1/An%20inhibitive%20determination%20method%20for%20heavy%20metals%20using%20tomato%20crude%20proteases.pdf |