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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...

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Main Authors: Chew, S. C., Prasad, K. Nagendra, Yang Bao,, Ismail, Amin
Format: Article
Language:English
English
Published: Universiti Kebangsaan Malaysia Publisher 2011
Online Access:http://psasir.upm.edu.my/id/eprint/24467/1/Changes%20in%20nitrate%20and%20nitrite%20levels%20of%20blanched%20amaranthus%20during%20refrigeration%20storage.pdf
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spelling oai:psasir.upm.edu.my:24467 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
institution UPM IR
collection UPM IR
language English
English
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.
format Article
author Chew, S. C.
Prasad, K. Nagendra
Yang Bao,
Ismail, Amin
spellingShingle Chew, S. C.
Prasad, K. Nagendra
Yang Bao,
Ismail, Amin
Changes in nitrate and nitrite levels of blanched amaranthus during refrigeration storage.
author_facet Chew, S. C.
Prasad, K. Nagendra
Yang Bao,
Ismail, Amin
author_sort Chew, S. C.
title 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_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_sort changes in nitrate and nitrite levels of blanched amaranthus during refrigeration storage.
publisher Universiti Kebangsaan Malaysia Publisher
publishDate 2011
url http://psasir.upm.edu.my/id/eprint/24467/1/Changes%20in%20nitrate%20and%20nitrite%20levels%20of%20blanched%20amaranthus%20during%20refrigeration%20storage.pdf
_version_ 1782719988908425216
score 12.935284

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