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Storage stability of potato variety Lady Rosetta under comparative temperature regimes

Potatoes are usually stored under low temperatures for sprout prevention and to ensure their continuous supply. Low temperature sweetening in potato is the major temperature related disorder being faced by the growers and is also known to be associated with variety specific storage temperature. The...

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Main Authors: Abbasi, Kashif Sarfraz, Masud, Tariq, Qayyum, Abdul, Khan, Sami Ullah, Abbas, Shabbar, Jenks, Matthew A.
Format: Article
Language:English
Published: Penerbit Universiti Kebangsaan Malaysia 2016
Online Access:http://journalarticle.ukm.my/9870/1/03_Kashif.pdf
http://journalarticle.ukm.my/9870/
http://www.ukm.my/jsm/malay_journals/jilid45bil5_2016/KandunganJilid45Bil5_2016.html
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spelling my-ukm.journal.98702016-12-14T06:51:06Z http://journalarticle.ukm.my/9870/ Storage stability of potato variety Lady Rosetta under comparative temperature regimes Abbasi, Kashif Sarfraz Masud, Tariq Qayyum, Abdul Khan, Sami Ullah Abbas, Shabbar Jenks, Matthew A. Potatoes are usually stored under low temperatures for sprout prevention and to ensure their continuous supply. Low temperature sweetening in potato is the major temperature related disorder being faced by the growers and is also known to be associated with variety specific storage temperature. The present study aimed at identifying the appropriate storage temperature for the premium potato variety Lady Rosetta with special reference to the changes in its quality attributes, that is weight loss, total sugars, starch, ascorbic acids, total phenolic contents, radical scavenging activity, enzymatic activities and potato chip color. The selected potato variety was stored under different temperature (5, 15 and 25oC) regimes to identify appropriate storage temperature. Our results showed significant variations in the tested quality attributes in response to different storage temperatures. Storage at 5oC maintained tuber dormancy up to 126 days, however, found associated with increased sugar accumulation (2.32 g/100 g), rapid starch depletion (13.25 g/100 g) and poor post processing performance (L-value, 52.00). In contrast, potato storage at 15oC retained lower sugar contents (1.33 g/100g) and superior chip color (L-value, 59.33) till the end of storage. However, they were found associated with the increased polyphenol oxidase (38.47 U/g f.w) and peroxidase (15.25 U/100 g f.w) activities as compare to those potatoes stored at 5oC during the same storage period. Storage life of potato tubers at 25oC was significantly reduced due to dormancy break on 84th day and subsequent starch degradation (15.29 g/100 g) increased sugar accumulation (1.32 g/100 g) and increased polyphenol oxidase (79.89 U/g f.w) and peroxidase activities (40.69 U/100 g f.w). Our results showed that potato variety Lady Rosetta is cold sensitive and requires specific temperature for prolonged storage and best post processing performance. Penerbit Universiti Kebangsaan Malaysia 2016-05 Article PeerReviewed application/pdf en http://journalarticle.ukm.my/9870/1/03_Kashif.pdf Abbasi, Kashif Sarfraz and Masud, Tariq and Qayyum, Abdul and Khan, Sami Ullah and Abbas, Shabbar and Jenks, Matthew A. (2016) Storage stability of potato variety Lady Rosetta under comparative temperature regimes. Sains Malaysiana, 45 (5). pp. 677-688. ISSN 0126-6039 http://www.ukm.my/jsm/malay_journals/jilid45bil5_2016/KandunganJilid45Bil5_2016.html
institution Universiti Kebangsaan Malaysia
building Perpustakaan Tun Sri Lanang Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Kebangsaan Malaysia
content_source UKM Journal Article Repository
url_provider http://journalarticle.ukm.my/
language English
description Potatoes are usually stored under low temperatures for sprout prevention and to ensure their continuous supply. Low temperature sweetening in potato is the major temperature related disorder being faced by the growers and is also known to be associated with variety specific storage temperature. The present study aimed at identifying the appropriate storage temperature for the premium potato variety Lady Rosetta with special reference to the changes in its quality attributes, that is weight loss, total sugars, starch, ascorbic acids, total phenolic contents, radical scavenging activity, enzymatic activities and potato chip color. The selected potato variety was stored under different temperature (5, 15 and 25oC) regimes to identify appropriate storage temperature. Our results showed significant variations in the tested quality attributes in response to different storage temperatures. Storage at 5oC maintained tuber dormancy up to 126 days, however, found associated with increased sugar accumulation (2.32 g/100 g), rapid starch depletion (13.25 g/100 g) and poor post processing performance (L-value, 52.00). In contrast, potato storage at 15oC retained lower sugar contents (1.33 g/100g) and superior chip color (L-value, 59.33) till the end of storage. However, they were found associated with the increased polyphenol oxidase (38.47 U/g f.w) and peroxidase (15.25 U/100 g f.w) activities as compare to those potatoes stored at 5oC during the same storage period. Storage life of potato tubers at 25oC was significantly reduced due to dormancy break on 84th day and subsequent starch degradation (15.29 g/100 g) increased sugar accumulation (1.32 g/100 g) and increased polyphenol oxidase (79.89 U/g f.w) and peroxidase activities (40.69 U/100 g f.w). Our results showed that potato variety Lady Rosetta is cold sensitive and requires specific temperature for prolonged storage and best post processing performance.
format Article
author Abbasi, Kashif Sarfraz
Masud, Tariq
Qayyum, Abdul
Khan, Sami Ullah
Abbas, Shabbar
Jenks, Matthew A.
spellingShingle Abbasi, Kashif Sarfraz
Masud, Tariq
Qayyum, Abdul
Khan, Sami Ullah
Abbas, Shabbar
Jenks, Matthew A.
Storage stability of potato variety Lady Rosetta under comparative temperature regimes
author_facet Abbasi, Kashif Sarfraz
Masud, Tariq
Qayyum, Abdul
Khan, Sami Ullah
Abbas, Shabbar
Jenks, Matthew A.
author_sort Abbasi, Kashif Sarfraz
title Storage stability of potato variety Lady Rosetta under comparative temperature regimes
title_short Storage stability of potato variety Lady Rosetta under comparative temperature regimes
title_full Storage stability of potato variety Lady Rosetta under comparative temperature regimes
title_fullStr Storage stability of potato variety Lady Rosetta under comparative temperature regimes
title_full_unstemmed Storage stability of potato variety Lady Rosetta under comparative temperature regimes
title_sort storage stability of potato variety lady rosetta under comparative temperature regimes
publisher Penerbit Universiti Kebangsaan Malaysia
publishDate 2016
url http://journalarticle.ukm.my/9870/1/03_Kashif.pdf
http://journalarticle.ukm.my/9870/
http://www.ukm.my/jsm/malay_journals/jilid45bil5_2016/KandunganJilid45Bil5_2016.html
_version_ 1643737936555933696
score 13.211869

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