Polyborate ions influence on the durability of wood treated with non-toxic protein borate preservatives
11B NMR spectra of the reaction products present in solutions of boric acid and protein such as albumin were done to determine the boron species present in protein borate wood preservatives. At acid pHs only the undissociated H3BO3 at 20 ppm occurs, while at alkaline pH the signals of the charged and uncharged boron atoms at 16 ppm and 12.6-13.7 ppm of the three ionic species [B(OH)4]-, [B303(OH)4]-, [B303(OH)5]2- occur. A third much smaller intensity signal at 1.7-1.8 ppm due to the reaction of a polyborate compound with the protein is also present. Application of heat causes a relative increase in the proportion of the latter two signals indicating both an increase of charged structures in solution and of the proportion of boron ions having reacted with the protein, the higher temperature having increased its solubility. This is compared and related to the effectiveness of albumin borate at different pHs and in relation to the different extent of leaching of boron species in both laboratory and field trial experiments. Both laboratory and field trials are reported. This is also related to previous findings as regards the effectiveness of proteins of different isoelectric point when used in protein borates wood preservatives, and to the influence of pH on the performance of these wood preservatives.
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Subjects: | J12 - Manutention, transport, stockage et conservation des produits forestiers, K50 - Technologie des produits forestiers, préservation du bois, acide borique, protéine, toxicité, http://aims.fao.org/aos/agrovoc/c_8428, http://aims.fao.org/aos/agrovoc/c_1016, http://aims.fao.org/aos/agrovoc/c_6259, http://aims.fao.org/aos/agrovoc/c_7826, |
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dig-cirad-fr-5292742024-01-28T14:02:45Z http://agritrop.cirad.fr/529274/ http://agritrop.cirad.fr/529274/ Polyborate ions influence on the durability of wood treated with non-toxic protein borate preservatives. Thévenon Marie-France, Pizzi Antonio. 2003. Holz als Roh- und Werkstoff, 61 : 457-464.https://doi.org/10.1007/s00107-003-0421-6 <https://doi.org/10.1007/s00107-003-0421-6> Polyborate ions influence on the durability of wood treated with non-toxic protein borate preservatives Thévenon, Marie-France Pizzi, Antonio eng 2003 Holz als Roh- und Werkstoff J12 - Manutention, transport, stockage et conservation des produits forestiers K50 - Technologie des produits forestiers préservation du bois acide borique protéine toxicité http://aims.fao.org/aos/agrovoc/c_8428 http://aims.fao.org/aos/agrovoc/c_1016 http://aims.fao.org/aos/agrovoc/c_6259 http://aims.fao.org/aos/agrovoc/c_7826 11B NMR spectra of the reaction products present in solutions of boric acid and protein such as albumin were done to determine the boron species present in protein borate wood preservatives. At acid pHs only the undissociated H3BO3 at 20 ppm occurs, while at alkaline pH the signals of the charged and uncharged boron atoms at 16 ppm and 12.6-13.7 ppm of the three ionic species [B(OH)4]-, [B303(OH)4]-, [B303(OH)5]2- occur. A third much smaller intensity signal at 1.7-1.8 ppm due to the reaction of a polyborate compound with the protein is also present. Application of heat causes a relative increase in the proportion of the latter two signals indicating both an increase of charged structures in solution and of the proportion of boron ions having reacted with the protein, the higher temperature having increased its solubility. This is compared and related to the effectiveness of albumin borate at different pHs and in relation to the different extent of leaching of boron species in both laboratory and field trial experiments. Both laboratory and field trials are reported. This is also related to previous findings as regards the effectiveness of proteins of different isoelectric point when used in protein borates wood preservatives, and to the influence of pH on the performance of these wood preservatives. article info:eu-repo/semantics/article Journal Article info:eu-repo/semantics/publishedVersion http://agritrop.cirad.fr/529274/1/529274.pdf text Cirad license info:eu-repo/semantics/restrictedAccess https://agritrop.cirad.fr/mention_legale.html https://doi.org/10.1007/s00107-003-0421-6 10.1007/s00107-003-0421-6 http://catalogue-bibliotheques.cirad.fr/cgi-bin/koha/opac-detail.pl?biblionumber=188806 info:eu-repo/semantics/altIdentifier/doi/10.1007/s00107-003-0421-6 info:eu-repo/semantics/altIdentifier/purl/https://doi.org/10.1007/s00107-003-0421-6 |
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J12 - Manutention, transport, stockage et conservation des produits forestiers K50 - Technologie des produits forestiers préservation du bois acide borique protéine toxicité http://aims.fao.org/aos/agrovoc/c_8428 http://aims.fao.org/aos/agrovoc/c_1016 http://aims.fao.org/aos/agrovoc/c_6259 http://aims.fao.org/aos/agrovoc/c_7826 J12 - Manutention, transport, stockage et conservation des produits forestiers K50 - Technologie des produits forestiers préservation du bois acide borique protéine toxicité http://aims.fao.org/aos/agrovoc/c_8428 http://aims.fao.org/aos/agrovoc/c_1016 http://aims.fao.org/aos/agrovoc/c_6259 http://aims.fao.org/aos/agrovoc/c_7826 |
spellingShingle |
J12 - Manutention, transport, stockage et conservation des produits forestiers K50 - Technologie des produits forestiers préservation du bois acide borique protéine toxicité http://aims.fao.org/aos/agrovoc/c_8428 http://aims.fao.org/aos/agrovoc/c_1016 http://aims.fao.org/aos/agrovoc/c_6259 http://aims.fao.org/aos/agrovoc/c_7826 J12 - Manutention, transport, stockage et conservation des produits forestiers K50 - Technologie des produits forestiers préservation du bois acide borique protéine toxicité http://aims.fao.org/aos/agrovoc/c_8428 http://aims.fao.org/aos/agrovoc/c_1016 http://aims.fao.org/aos/agrovoc/c_6259 http://aims.fao.org/aos/agrovoc/c_7826 Thévenon, Marie-France Pizzi, Antonio Polyborate ions influence on the durability of wood treated with non-toxic protein borate preservatives |
description |
11B NMR spectra of the reaction products present in solutions of boric acid and protein such as albumin were done to determine the boron species present in protein borate wood preservatives. At acid pHs only the undissociated H3BO3 at 20 ppm occurs, while at alkaline pH the signals of the charged and uncharged boron atoms at 16 ppm and 12.6-13.7 ppm of the three ionic species [B(OH)4]-, [B303(OH)4]-, [B303(OH)5]2- occur. A third much smaller intensity signal at 1.7-1.8 ppm due to the reaction of a polyborate compound with the protein is also present. Application of heat causes a relative increase in the proportion of the latter two signals indicating both an increase of charged structures in solution and of the proportion of boron ions having reacted with the protein, the higher temperature having increased its solubility. This is compared and related to the effectiveness of albumin borate at different pHs and in relation to the different extent of leaching of boron species in both laboratory and field trial experiments. Both laboratory and field trials are reported. This is also related to previous findings as regards the effectiveness of proteins of different isoelectric point when used in protein borates wood preservatives, and to the influence of pH on the performance of these wood preservatives. |
format |
article |
topic_facet |
J12 - Manutention, transport, stockage et conservation des produits forestiers K50 - Technologie des produits forestiers préservation du bois acide borique protéine toxicité http://aims.fao.org/aos/agrovoc/c_8428 http://aims.fao.org/aos/agrovoc/c_1016 http://aims.fao.org/aos/agrovoc/c_6259 http://aims.fao.org/aos/agrovoc/c_7826 |
author |
Thévenon, Marie-France Pizzi, Antonio |
author_facet |
Thévenon, Marie-France Pizzi, Antonio |
author_sort |
Thévenon, Marie-France |
title |
Polyborate ions influence on the durability of wood treated with non-toxic protein borate preservatives |
title_short |
Polyborate ions influence on the durability of wood treated with non-toxic protein borate preservatives |
title_full |
Polyborate ions influence on the durability of wood treated with non-toxic protein borate preservatives |
title_fullStr |
Polyborate ions influence on the durability of wood treated with non-toxic protein borate preservatives |
title_full_unstemmed |
Polyborate ions influence on the durability of wood treated with non-toxic protein borate preservatives |
title_sort |
polyborate ions influence on the durability of wood treated with non-toxic protein borate preservatives |
url |
http://agritrop.cirad.fr/529274/ http://agritrop.cirad.fr/529274/1/529274.pdf |
work_keys_str_mv |
AT thevenonmariefrance polyborateionsinfluenceonthedurabilityofwoodtreatedwithnontoxicproteinboratepreservatives AT pizziantonio polyborateionsinfluenceonthedurabilityofwoodtreatedwithnontoxicproteinboratepreservatives |
_version_ |
1792496313882902528 |