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231223s2006 xx ||||| 00| ||eng c |
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|a pubmed24n0541.xml
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|a (DE-627)NLM162316860
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|a (NLM)16647859
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|a DE-627
|b ger
|c DE-627
|e rakwb
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| 041 |
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|a eng
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| 100 |
1 |
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|a Li, Xingjun
|e verfasserin
|4 aut
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| 245 |
1 |
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|a Changes in the cell-wall polysaccharides of outer pericarp tissues of kiwifruit during development
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| 264 |
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|c 2006
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| 336 |
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|a Text
|b txt
|2 rdacontent
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|a ohne Hilfsmittel zu benutzen
|b n
|2 rdamedia
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| 338 |
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|a Band
|b nc
|2 rdacarrier
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|a Date Completed 17.04.2007
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|a Date Revised 30.09.2020
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a Changes in pectin, hemicelluloses and cellulose in the cell walls of outer pericarp tissues of kiwifruit (Actinidia deliciosa cv. Hayward) were determined during development. An extensive amylase digestion was employed to remove possible contaminating starch before and after fractionation of wall polysaccharides. An initial treatment of crude cell walls with alpha-amylase and iso-amylase or DMSO, was found to be insufficient removing the contaminating starch from wall polysaccharides. After EDTA and alkaline extraction, the pectic and hemicellulose fractions were again treated with the combination of alpha-amylase and iso-amylase. The amounts of predominant pectic sugars Gal, Rha and Ara, unaffected by the first and second amylase digestion, decreased markedly during the early fruit enlargement (8-12 weeks after anthesis, WAA), then increased during 16-20 WAA, and finally declined during fruit maturity (20-25 WAA). The molecular-mass of pectic polysaccharides decreased during fruit enlargement (8-16 WAA), and then changed little during fruit maturity. The higher molecular-mass components of hemicelluloses in HC-I and HC-II fractions detected at the early stage of fruit enlargement (8-12 WAA) were degraded at the late stage of fruit enlargement (16 WAA), but then remained stable at the much lower molecular-mass till fruit maturity. The amount of Xyl in the HC-II fraction decreased during the early fruit enlargement and fruit maturity, an observation that was consistent with xyloglucan (XG) content. The gel permeation profiles of XG showed a slight increase in higher molecular-mass components during 8-12 WAA, but thereafter there was no significant down-shift of molecular-mass until harvest time. The cellulose fraction increased steadily during fruit enlargement through maturity, but the XG contents in HC-I and HC-II fractions remained at a low level during these stages. Methylation analysis of HC-I and HC-II fractions confirmed the low level of XG in the hemicellulosic fractions. It was suggested that pectin in the outer pericarp of kiwifruit was degraded at the early stage of fruit enlargement, but XG remains constant during fruit enlargement and maturation
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a Polysaccharides
|2 NLM
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|a hemicellulose
|2 NLM
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|a 8024-50-8
|2 NLM
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| 650 |
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|a Pectins
|2 NLM
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| 650 |
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|a 89NA02M4RX
|2 NLM
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| 650 |
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|a Cellulose
|2 NLM
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| 650 |
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|a 9004-34-6
|2 NLM
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| 700 |
1 |
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|a Nakagawa, Naoki
|e verfasserin
|4 aut
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| 700 |
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|a Nevins, Donald J
|e verfasserin
|4 aut
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| 700 |
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|a Sakurai, Naoki
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Plant physiology and biochemistry : PPB
|d 1991
|g 44(2006), 2-3 vom: 01. Feb., Seite 115-24
|w (DE-627)NLM098178261
|x 1873-2690
|7 nnns
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| 773 |
1 |
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|g volume:44
|g year:2006
|g number:2-3
|g day:01
|g month:02
|g pages:115-24
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|a AR
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|d 44
|j 2006
|e 2-3
|b 01
|c 02
|h 115-24
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