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Determination of amylopectin structure and physicochemical properties in rice endosperm starch of mutant lines derived from Malaysian rice cultivar MR219

BACKGROUND: Characterization of starch properties and functionality can apply breeding program selection for desirable traits such as eating, cooking and processing qualities to meet consumer preference. Low amylose content is generally preferred in Malaysia because of cohesive, tender and glossy co...

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Main Authors: Mar, Nyo Nyo, Umemoto, Takayuki, Ismail, Maznah, Abdullah, Siti Nor Akmar, Mahmood, Maziah
Format: Article
Language:English
Published: Society of Chemical Industry 2013
Online Access:http://psasir.upm.edu.my/id/eprint/28022/1/28022.pdf
http://psasir.upm.edu.my/id/eprint/28022/
http://onlinelibrary.wiley.com/doi/10.1002/jsfa.5737/abstract;jsessionid=8073DEE6811E1EAD5915916E0275053F.f01t01?systemMessage=Wiley+Online+Library+will+be+unavailable+on+Saturday+27th+February+from+09%3A00-14%3A00+GMT+%2F+04%3A00-09%3A00+EST+%2F+17%3A00-
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spelling my.upm.eprints.280222016-04-21T05:50:32Z http://psasir.upm.edu.my/id/eprint/28022/ Determination of amylopectin structure and physicochemical properties in rice endosperm starch of mutant lines derived from Malaysian rice cultivar MR219 Mar, Nyo Nyo Umemoto, Takayuki Ismail, Maznah Abdullah, Siti Nor Akmar Mahmood, Maziah BACKGROUND: Characterization of starch properties and functionality can apply breeding program selection for desirable traits such as eating, cooking and processing qualities to meet consumer preference. Low amylose content is generally preferred in Malaysia because of cohesive, tender and glossy cooked rice. Rice high in short-chain amylopectin has a lower transition temperature of starch gelatinization. In the continuing search for improved starch quality in rice cultivars a study was carried out with new mutant lines MR219-4 and MR219-9, derived from MR219. RESULTS: MR219 and its mutant lines contain L-type amylopectin, being high in amylopectin of intermediate chain length with degree of polymerization 12-21. The apparent amylose content (AAC) in MR219-4 had lower AAC value (19.2%) compared to other lines. A strongly negative correlation was found between chain-length fraction of amylopectin and transition temperatures—onset temperature peak temperature, and conclusion temperature (0.992, 0.958, 0.950; P < 0.01)—with fraction b1 (fb1), respectively. CONCLUSION: The Malaysian lines studied contain L-type amylopectin and offer a better understanding of grain quality improvement in terms of starch properties and functionality. This information will be directly applicable to select for desirable traits in future breeding programs. Society of Chemical Industry 2013-01 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/28022/1/28022.pdf Mar, Nyo Nyo and Umemoto, Takayuki and Ismail, Maznah and Abdullah, Siti Nor Akmar and Mahmood, Maziah (2013) Determination of amylopectin structure and physicochemical properties in rice endosperm starch of mutant lines derived from Malaysian rice cultivar MR219. Journal of the Science of Food and Agriculture, 93 (1). pp. 110-117. ISSN 0022-5142; ESSN: 1097-0010 http://onlinelibrary.wiley.com/doi/10.1002/jsfa.5737/abstract;jsessionid=8073DEE6811E1EAD5915916E0275053F.f01t01?systemMessage=Wiley+Online+Library+will+be+unavailable+on+Saturday+27th+February+from+09%3A00-14%3A00+GMT+%2F+04%3A00-09%3A00+EST+%2F+17%3A00- 10.1002/jsfa.5737
institution Universiti Putra Malaysia
building UPM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Putra Malaysia
content_source UPM Institutional Repository
url_provider http://psasir.upm.edu.my/
language English
description BACKGROUND: Characterization of starch properties and functionality can apply breeding program selection for desirable traits such as eating, cooking and processing qualities to meet consumer preference. Low amylose content is generally preferred in Malaysia because of cohesive, tender and glossy cooked rice. Rice high in short-chain amylopectin has a lower transition temperature of starch gelatinization. In the continuing search for improved starch quality in rice cultivars a study was carried out with new mutant lines MR219-4 and MR219-9, derived from MR219. RESULTS: MR219 and its mutant lines contain L-type amylopectin, being high in amylopectin of intermediate chain length with degree of polymerization 12-21. The apparent amylose content (AAC) in MR219-4 had lower AAC value (19.2%) compared to other lines. A strongly negative correlation was found between chain-length fraction of amylopectin and transition temperatures—onset temperature peak temperature, and conclusion temperature (0.992, 0.958, 0.950; P < 0.01)—with fraction b1 (fb1), respectively. CONCLUSION: The Malaysian lines studied contain L-type amylopectin and offer a better understanding of grain quality improvement in terms of starch properties and functionality. This information will be directly applicable to select for desirable traits in future breeding programs.
format Article
author Mar, Nyo Nyo
Umemoto, Takayuki
Ismail, Maznah
Abdullah, Siti Nor Akmar
Mahmood, Maziah
spellingShingle Mar, Nyo Nyo
Umemoto, Takayuki
Ismail, Maznah
Abdullah, Siti Nor Akmar
Mahmood, Maziah
Determination of amylopectin structure and physicochemical properties in rice endosperm starch of mutant lines derived from Malaysian rice cultivar MR219
author_facet Mar, Nyo Nyo
Umemoto, Takayuki
Ismail, Maznah
Abdullah, Siti Nor Akmar
Mahmood, Maziah
author_sort Mar, Nyo Nyo
title Determination of amylopectin structure and physicochemical properties in rice endosperm starch of mutant lines derived from Malaysian rice cultivar MR219
title_short Determination of amylopectin structure and physicochemical properties in rice endosperm starch of mutant lines derived from Malaysian rice cultivar MR219
title_full Determination of amylopectin structure and physicochemical properties in rice endosperm starch of mutant lines derived from Malaysian rice cultivar MR219
title_fullStr Determination of amylopectin structure and physicochemical properties in rice endosperm starch of mutant lines derived from Malaysian rice cultivar MR219
title_full_unstemmed Determination of amylopectin structure and physicochemical properties in rice endosperm starch of mutant lines derived from Malaysian rice cultivar MR219
title_sort determination of amylopectin structure and physicochemical properties in rice endosperm starch of mutant lines derived from malaysian rice cultivar mr219
publisher Society of Chemical Industry
publishDate 2013
url http://psasir.upm.edu.my/id/eprint/28022/1/28022.pdf
http://psasir.upm.edu.my/id/eprint/28022/
http://onlinelibrary.wiley.com/doi/10.1002/jsfa.5737/abstract;jsessionid=8073DEE6811E1EAD5915916E0275053F.f01t01?systemMessage=Wiley+Online+Library+will+be+unavailable+on+Saturday+27th+February+from+09%3A00-14%3A00+GMT+%2F+04%3A00-09%3A00+EST+%2F+17%3A00-
_version_ 1643829346059681792
score 13.211869

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