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Alterations in the activity and structure of pectin methylesterase treated by high pressure carbon dioxide.

Identifieur interne : 000972 ( PubMed/Corpus ); précédent : 000971; suivant : 000973

Alterations in the activity and structure of pectin methylesterase treated by high pressure carbon dioxide.

Auteurs : Linyan Zhou ; Jihong Wu ; Xiaosong Hu ; Xian Zhi ; Xiaojun Liao

Source :

Journal of agricultural and food chemistry [ 1520-5118 ] ; 2009.

RBID : pubmed:19256556

English descriptors

KwdEn :
- Carbon Dioxide (pharmacology), Carboxylic Ester Hydrolases (antagonists & inhibitors), Carboxylic Ester Hydrolases (chemistry), Citrus sinensis (enzymology), Enzyme Stability, Plant Proteins (antagonists & inhibitors), Plant Proteins (chemistry), Pressure.
MESH :
- chemical , antagonists & inhibitors : Carboxylic Ester Hydrolases, Plant Proteins.
- chemical , chemistry : Carboxylic Ester Hydrolases, Plant Proteins.
- chemical , pharmacology : Carbon Dioxide.
- enzymology : Citrus sinensis.
- Enzyme Stability, Pressure.

Abstract

The influence of high pressure carbon dioxide (HPCD) on the activity and structure of pectin methylesterase (PME) from orange was investigated. The pressures were 8-30 MPa, temperature 55 degrees C and time 10 min. HPCD caused significant inactivation on PME, the lowest residual activity was about 9.3% at 30 MPa. The SDS-PAGE electrophoretic behavior of HPCD-treated PME was not altered, while changes in the secondary and tertiary structures were found. The beta-structure fraction in the secondary structure decreased and the fluorescence intensity increased as HPCD pressures were elevated. After 7-day storage at 4 degrees C, no alteration of its activity and no reversion of its beta-structure fraction were observed, while its fluorescence intensity further decreased.

DOI: 10.1021/jf803501q
PubMed: 19256556

Links to Exploration step

pubmed:19256556

Le document en format XML

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<author><name sortKey="Zhou, Linyan" sort="Zhou, Linyan" uniqKey="Zhou L" first="Linyan" last="Zhou">Linyan Zhou</name>
<affiliation><nlm:affiliation>College of Food Science and Nutritional Engineering, China Agricultural University, Key Laboratory of Fruit & Vegetable Processing, Ministry of Agriculture, Engineering Research Center for Fruit & Vegetable Processing, Ministry of Education, Beijing 100083, China.</nlm:affiliation>
</affiliation>
</author>
<author><name sortKey="Wu, Jihong" sort="Wu, Jihong" uniqKey="Wu J" first="Jihong" last="Wu">Jihong Wu</name>
</author>
<author><name sortKey="Hu, Xiaosong" sort="Hu, Xiaosong" uniqKey="Hu X" first="Xiaosong" last="Hu">Xiaosong Hu</name>
</author>
<author><name sortKey="Zhi, Xian" sort="Zhi, Xian" uniqKey="Zhi X" first="Xian" last="Zhi">Xian Zhi</name>
</author>
<author><name sortKey="Liao, Xiaojun" sort="Liao, Xiaojun" uniqKey="Liao X" first="Xiaojun" last="Liao">Xiaojun Liao</name>
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<author><name sortKey="Zhou, Linyan" sort="Zhou, Linyan" uniqKey="Zhou L" first="Linyan" last="Zhou">Linyan Zhou</name>
<affiliation><nlm:affiliation>College of Food Science and Nutritional Engineering, China Agricultural University, Key Laboratory of Fruit & Vegetable Processing, Ministry of Agriculture, Engineering Research Center for Fruit & Vegetable Processing, Ministry of Education, Beijing 100083, China.</nlm:affiliation>
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<author><name sortKey="Wu, Jihong" sort="Wu, Jihong" uniqKey="Wu J" first="Jihong" last="Wu">Jihong Wu</name>
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<author><name sortKey="Hu, Xiaosong" sort="Hu, Xiaosong" uniqKey="Hu X" first="Xiaosong" last="Hu">Xiaosong Hu</name>
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<author><name sortKey="Zhi, Xian" sort="Zhi, Xian" uniqKey="Zhi X" first="Xian" last="Zhi">Xian Zhi</name>
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<author><name sortKey="Liao, Xiaojun" sort="Liao, Xiaojun" uniqKey="Liao X" first="Xiaojun" last="Liao">Xiaojun Liao</name>
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<series><title level="j">Journal of agricultural and food chemistry</title>
<idno type="eISSN">1520-5118</idno>
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<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Carbon Dioxide (pharmacology)</term>
<term>Carboxylic Ester Hydrolases (antagonists & inhibitors)</term>
<term>Carboxylic Ester Hydrolases (chemistry)</term>
<term>Citrus sinensis (enzymology)</term>
<term>Enzyme Stability</term>
<term>Plant Proteins (antagonists & inhibitors)</term>
<term>Plant Proteins (chemistry)</term>
<term>Pressure</term>
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<keywords scheme="MESH" type="chemical" qualifier="antagonists & inhibitors" xml:lang="en"><term>Carboxylic Ester Hydrolases</term>
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<front><div type="abstract" xml:lang="en">The influence of high pressure carbon dioxide (HPCD) on the activity and structure of pectin methylesterase (PME) from orange was investigated. The pressures were 8-30 MPa, temperature 55 degrees C and time 10 min. HPCD caused significant inactivation on PME, the lowest residual activity was about 9.3% at 30 MPa. The SDS-PAGE electrophoretic behavior of HPCD-treated PME was not altered, while changes in the secondary and tertiary structures were found. The beta-structure fraction in the secondary structure decreased and the fluorescence intensity increased as HPCD pressures were elevated. After 7-day storage at 4 degrees C, no alteration of its activity and no reversion of its beta-structure fraction were observed, while its fluorescence intensity further decreased.</div>
</front>
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<Day>4</Day>
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<DateCompleted><Year>2010</Year>
<Month>08</Month>
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<DateRevised><Year>2013</Year>
<Month>11</Month>
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<Title>Journal of agricultural and food chemistry</Title>
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<Abstract><AbstractText>The influence of high pressure carbon dioxide (HPCD) on the activity and structure of pectin methylesterase (PME) from orange was investigated. The pressures were 8-30 MPa, temperature 55 degrees C and time 10 min. HPCD caused significant inactivation on PME, the lowest residual activity was about 9.3% at 30 MPa. The SDS-PAGE electrophoretic behavior of HPCD-treated PME was not altered, while changes in the secondary and tertiary structures were found. The beta-structure fraction in the secondary structure decreased and the fluorescence intensity increased as HPCD pressures were elevated. After 7-day storage at 4 degrees C, no alteration of its activity and no reversion of its beta-structure fraction were observed, while its fluorescence intensity further decreased.</AbstractText>
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<MeshHeading><DescriptorName UI="D032084" MajorTopicYN="N">Citrus sinensis</DescriptorName>
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<MeshHeading><DescriptorName UI="D004795" MajorTopicYN="N">Enzyme Stability</DescriptorName>
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<MeshHeading><DescriptorName UI="D010940" MajorTopicYN="N">Plant Proteins</DescriptorName>
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<QualifierName UI="Q000737" MajorTopicYN="Y">chemistry</QualifierName>
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<MeshHeading><DescriptorName UI="D011312" MajorTopicYN="N">Pressure</DescriptorName>
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Alterations in the activity and structure of pectin methylesterase treated by high pressure carbon dioxide.

Alterations in the activity and structure of pectin methylesterase treated by high pressure carbon dioxide.

Source :

English descriptors

Abstract

Links to Exploration step

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri

Pour générer des pages wiki