Changes in nitrate and nitrite levels of blanched amaranthus during refrigeration storage.
Changes in nitrate and nitrite contents (leaves and stem) of Amaranthus gangeticus (AG) and Amaranthus paniculatus (AP), resulting from blanching, storage time (0-4 days), storage temperature (0 and 4ºC), and reheating were analysed. Results showed that fresh AG (1859 ± 7.07 mg/kg) had higher nitr...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English English |
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Universiti Kebangsaan Malaysia Publisher
2011
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| Online Access: | http://psasir.upm.edu.my/id/eprint/24467/ http://psasir.upm.edu.my/id/eprint/24467/1/Changes%20in%20nitrate%20and%20nitrite%20levels%20of%20blanched%20amaranthus%20during%20refrigeration%20storage.pdf |
| _version_ | 1848845045271101440 |
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| author | Chew, S. C. Prasad, K. Nagendra Yang Bao, Ismail, Amin |
| author_facet | Chew, S. C. Prasad, K. Nagendra Yang Bao, Ismail, Amin |
| author_sort | Chew, S. C. |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | Changes in nitrate and nitrite contents (leaves and stem) of Amaranthus gangeticus (AG) and Amaranthus paniculatus
(AP), resulting from blanching, storage time (0-4 days), storage temperature (0 and 4ºC), and reheating were analysed.
Results showed that fresh AG (1859 ± 7.07 mg/kg) had higher nitrite content than AP (1262 ± 2.12 mg/kg). Nitrites
content was 506 ± 2 and 825 ± 3.5 mg/kg for AG and AP, respectively. Reheating and storage times significantly
increased the conversion of nitrate to nitrite in AG and AP. Storage at 0 and 4oC exhibited a significant change (P <
0.05) in nitrate and nitrite contents for both samples. Higher nitrite content was found in AP when stored at 4oC and 0oC. The present study indicated that storage time and temperature affected the nitrite contents in blanched AG and AP when stored in low temperatures. Apart from that reheating was also found to increase the formation of nitrite. |
| first_indexed | 2025-11-15T08:40:34Z |
| format | Article |
| id | upm-24467 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| language | English English |
| last_indexed | 2025-11-15T08:40:34Z |
| publishDate | 2011 |
| publisher | Universiti Kebangsaan Malaysia Publisher |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-244672015-10-06T01:37:44Z http://psasir.upm.edu.my/id/eprint/24467/ Changes in nitrate and nitrite levels of blanched amaranthus during refrigeration storage. Chew, S. C. Prasad, K. Nagendra Yang Bao, Ismail, Amin Changes in nitrate and nitrite contents (leaves and stem) of Amaranthus gangeticus (AG) and Amaranthus paniculatus (AP), resulting from blanching, storage time (0-4 days), storage temperature (0 and 4ºC), and reheating were analysed. Results showed that fresh AG (1859 ± 7.07 mg/kg) had higher nitrite content than AP (1262 ± 2.12 mg/kg). Nitrites content was 506 ± 2 and 825 ± 3.5 mg/kg for AG and AP, respectively. Reheating and storage times significantly increased the conversion of nitrate to nitrite in AG and AP. Storage at 0 and 4oC exhibited a significant change (P < 0.05) in nitrate and nitrite contents for both samples. Higher nitrite content was found in AP when stored at 4oC and 0oC. The present study indicated that storage time and temperature affected the nitrite contents in blanched AG and AP when stored in low temperatures. Apart from that reheating was also found to increase the formation of nitrite. Universiti Kebangsaan Malaysia Publisher 2011 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/24467/1/Changes%20in%20nitrate%20and%20nitrite%20levels%20of%20blanched%20amaranthus%20during%20refrigeration%20storage.pdf Chew, S. C. and Prasad, K. Nagendra and Yang Bao, and Ismail, Amin (2011) Changes in nitrate and nitrite levels of blanched amaranthus during refrigeration storage. Jurnal Sains Kesihatan Malaysia, 9 (1). pp. 29-34. ISSN 1675-8161; ESSN: 2289-4535 http://ejournal.ukm.my/jskm/ English |
| spellingShingle | Chew, S. C. Prasad, K. Nagendra Yang Bao, Ismail, Amin Changes in nitrate and nitrite levels of blanched amaranthus during refrigeration storage. |
| title | Changes in nitrate and nitrite levels of blanched amaranthus during refrigeration storage. |
| title_full | Changes in nitrate and nitrite levels of blanched amaranthus during refrigeration storage. |
| title_fullStr | Changes in nitrate and nitrite levels of blanched amaranthus during refrigeration storage. |
| title_full_unstemmed | Changes in nitrate and nitrite levels of blanched amaranthus during refrigeration storage. |
| title_short | Changes in nitrate and nitrite levels of blanched amaranthus during refrigeration storage. |
| title_sort | changes in nitrate and nitrite levels of blanched amaranthus during refrigeration storage. |
| url | http://psasir.upm.edu.my/id/eprint/24467/ http://psasir.upm.edu.my/id/eprint/24467/ http://psasir.upm.edu.my/id/eprint/24467/1/Changes%20in%20nitrate%20and%20nitrite%20levels%20of%20blanched%20amaranthus%20during%20refrigeration%20storage.pdf |