Topochemical investigation on phenolic deposits in the vessels of afzelia (Afzelia spp.) and merbau (Intsia spp.) heartwood
The topochemical distribution of phenolic deposits in the vessels of afzelia (Afzelia spp.) and merbau (Intsia spp.) heartwood was investigated by means of cellular UV microspectrophotometry (UMSP) to characterise the chemical composition and synthesis by pit membrane-associated enzymes. UV absorban...
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| Veröffentlicht in: | Holzforschung 2006-11, Vol.60 (6), p.583-588 |
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| container_title | Holzforschung |
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| creator | Koch, Gerald Richter, Hans-Georg Schmitt, Uwe |
| description | The topochemical distribution of phenolic deposits in the vessels of afzelia (Afzelia spp.) and merbau (Intsia spp.) heartwood was investigated by means of cellular UV microspectrophotometry (UMSP) to characterise the chemical composition and synthesis by pit membrane-associated enzymes. UV absorbance spectra of the deposits attached to the vessel walls of merbau are characterised by a distinct maximum at a wavelength of 368 nm representing the UV absorbance of pure robinetin (C15H10O7). Deposits in the vessels of afzelia display a typical spectrum of kaempferol (C15H10O2) with two distinct maxima at 270 and 350 nm. The pit membranes and pit canals of associated vessel and parenchyma cells are impregnated by these compounds. These results verify the assumption that the synthesis of deposits in afzelia and merbau is regulated by pit membrane-associated enzymes. |
| doi_str_mv | 10.1515/HF.2006.099 |
| format | Article |
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UV absorbance spectra of the deposits attached to the vessel walls of merbau are characterised by a distinct maximum at a wavelength of 368 nm representing the UV absorbance of pure robinetin (C15H10O7). Deposits in the vessels of afzelia display a typical spectrum of kaempferol (C15H10O2) with two distinct maxima at 270 and 350 nm. The pit membranes and pit canals of associated vessel and parenchyma cells are impregnated by these compounds. These results verify the assumption that the synthesis of deposits in afzelia and merbau is regulated by pit membrane-associated enzymes.</description><identifier>ISSN: 0018-3830</identifier><identifier>EISSN: 1437-434X</identifier><identifier>DOI: 10.1515/HF.2006.099</identifier><identifier>CODEN: HOLZAZ</identifier><language>eng</language><publisher>Berlin: Walter de Gruyter</publisher><subject>afzelia (Afzelia spp.) ; Applied sciences ; Degradation and preservation ; Exact sciences and technology ; merbau (Intsia spp.) ; phenolic deposits ; pit membrane ; Polymer industry, paints, wood ; Properties and testing ; UV microspectrophotometry (UMSP) ; Wood ; Wood. Paper. 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UV absorbance spectra of the deposits attached to the vessel walls of merbau are characterised by a distinct maximum at a wavelength of 368 nm representing the UV absorbance of pure robinetin (C15H10O7). Deposits in the vessels of afzelia display a typical spectrum of kaempferol (C15H10O2) with two distinct maxima at 270 and 350 nm. The pit membranes and pit canals of associated vessel and parenchyma cells are impregnated by these compounds. These results verify the assumption that the synthesis of deposits in afzelia and merbau is regulated by pit membrane-associated enzymes.</description><subject>afzelia (Afzelia spp.)</subject><subject>Applied sciences</subject><subject>Degradation and preservation</subject><subject>Exact sciences and technology</subject><subject>merbau (Intsia spp.)</subject><subject>phenolic deposits</subject><subject>pit membrane</subject><subject>Polymer industry, paints, wood</subject><subject>Properties and testing</subject><subject>UV microspectrophotometry (UMSP)</subject><subject>Wood</subject><subject>Wood. Paper. Non wovens</subject><issn>0018-3830</issn><issn>1437-434X</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2006</creationdate><recordtype>article</recordtype><recordid>eNpFkN9LwzAQx4MoOKdP_gN5ESbSmjRt0z6OYd1gIOJE30KaXmy0a0oTf__zdmxMOLg7vp-7hw9C55SENKHJ9bwII0LSkOT5ARrRmPEgZvHzIRoRQrOAZYwcoxPnXoc1IYyO0O_KdlbVsDZKNti0H-C8eZHe2BYP1dXQ2sYoXEFnnfFuQLCvAQ-cg8Zhq7HUP9AYiSfT3eC6LrzEsq3wGvpSvuPJovVuH9Qge_9pbXWKjrRsHJzt-hg9Fjer2TxY3t0uZtNloFjKfVDGUQ4lSTjQFDiNiKQxr2KpgOg0Bp1KRkGVVEcqySoNPOea5UlCcwZapxUbo6vtX9Vb53rQouvNWvbfghKx8Sbmhdh4E4O3gb7Y0p10gxPdy1YZ93-SsYhlUTRwwZYzzsPXPpf9m0g544m4X8WCzWbLh4I9iZT9ASPsfb8</recordid><startdate>20061101</startdate><enddate>20061101</enddate><creator>Koch, Gerald</creator><creator>Richter, Hans-Georg</creator><creator>Schmitt, Uwe</creator><general>Walter de Gruyter</general><general>de Gruyter</general><scope>BSCLL</scope><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope></search><sort><creationdate>20061101</creationdate><title>Topochemical investigation on phenolic deposits in the vessels of afzelia (Afzelia spp.) and merbau (Intsia spp.) heartwood</title><author>Koch, Gerald ; Richter, Hans-Georg ; Schmitt, Uwe</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c367t-b429eb057e16e7120a147d4ace0f64ef6a31ecb1f2c58dfe797f3955193eff6d3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2006</creationdate><topic>afzelia (Afzelia spp.)</topic><topic>Applied sciences</topic><topic>Degradation and preservation</topic><topic>Exact sciences and technology</topic><topic>merbau (Intsia spp.)</topic><topic>phenolic deposits</topic><topic>pit membrane</topic><topic>Polymer industry, paints, wood</topic><topic>Properties and testing</topic><topic>UV microspectrophotometry (UMSP)</topic><topic>Wood</topic><topic>Wood. Paper. Non wovens</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Koch, Gerald</creatorcontrib><creatorcontrib>Richter, Hans-Georg</creatorcontrib><creatorcontrib>Schmitt, Uwe</creatorcontrib><collection>Istex</collection><collection>Pascal-Francis</collection><collection>CrossRef</collection><jtitle>Holzforschung</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Koch, Gerald</au><au>Richter, Hans-Georg</au><au>Schmitt, Uwe</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Topochemical investigation on phenolic deposits in the vessels of afzelia (Afzelia spp.) and merbau (Intsia spp.) heartwood</atitle><jtitle>Holzforschung</jtitle><addtitle>Holzforschung</addtitle><date>2006-11-01</date><risdate>2006</risdate><volume>60</volume><issue>6</issue><spage>583</spage><epage>588</epage><pages>583-588</pages><issn>0018-3830</issn><eissn>1437-434X</eissn><coden>HOLZAZ</coden><abstract>The topochemical distribution of phenolic deposits in the vessels of afzelia (Afzelia spp.) and merbau (Intsia spp.) heartwood was investigated by means of cellular UV microspectrophotometry (UMSP) to characterise the chemical composition and synthesis by pit membrane-associated enzymes. UV absorbance spectra of the deposits attached to the vessel walls of merbau are characterised by a distinct maximum at a wavelength of 368 nm representing the UV absorbance of pure robinetin (C15H10O7). Deposits in the vessels of afzelia display a typical spectrum of kaempferol (C15H10O2) with two distinct maxima at 270 and 350 nm. The pit membranes and pit canals of associated vessel and parenchyma cells are impregnated by these compounds. These results verify the assumption that the synthesis of deposits in afzelia and merbau is regulated by pit membrane-associated enzymes.</abstract><cop>Berlin</cop><cop>New York, NY</cop><pub>Walter de Gruyter</pub><doi>10.1515/HF.2006.099</doi><tpages>6</tpages></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 0018-3830 |
| ispartof | Holzforschung, 2006-11, Vol.60 (6), p.583-588 |
| issn | 0018-3830 1437-434X |
| language | eng |
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| source | De Gruyter journals |
| subjects | afzelia (Afzelia spp.) Applied sciences Degradation and preservation Exact sciences and technology merbau (Intsia spp.) phenolic deposits pit membrane Polymer industry, paints, wood Properties and testing UV microspectrophotometry (UMSP) Wood Wood. Paper. Non wovens |
| title | Topochemical investigation on phenolic deposits in the vessels of afzelia (Afzelia spp.) and merbau (Intsia spp.) heartwood |
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