@article {1799, title = { Determination of phenolic compounds by MALDI-TOF and essential oil composition by GC-MS during three development stages of Origanum majorana L. }, journal = { BIOMEDICAL CHROMATOGRAPHY }, volume = {33}, year = {2019}, abstract = {

This study aimed to investigate the effect of the maturation process of sweet marjoram (Origanum majorana L.) on essential oil composition, the phenolic profile of ethanolic extract and their antioxidant capacities. The essential oil composition was studied at three stages of maturity by GC-MS. Thirty compounds were detected representing 100\% of the total essential oil. p-Menth-1-en-4-ol was the major compound (37.15-76.94\%) followed by cyclohexanol-3,3,5 trimethyl (5.41-15.99\%) and alpha-terpineol (0.94-11.34\%). During the maturation process, an accumulation of oxygenated monoterpenes was observed. The phenolic composition was studied using matrix-assisted laser desorption/ionization time of flight. The analysis showed the presence of short flavonoid monomers at all stages of maturation. The antioxidant capacity of ethanolic extracts and essential oils was evaluated using the DPPH assay, iron chelating power and reducing power assay. The highest phenolic content and antioxidant capacity were found at flowering stage. These findings on essential oil composition, phenolic profile and antioxidant capacity of O. majorana at three different stages of development provide more information on how these secondary metabolites are accumulated.

}, author = {A. KHADHRI and I. BOUALI and C. AOUADHI and M.C. LAGEL and E. MASSON and A. PIZZI} } @article {1757, title = { Synthesis, structure characterization and application of melamine-glyoxal adhesive resins }, journal = { EUROPEAN JOURNAL OF WOOD AND WOOD PRODUCTS }, volume = {76}, year = {2018}, pages = {283-296}, abstract = {

To eliminate formaldehyde in melamine-formaldehyde (MF) resins the nonvolatile and nontoxic aldehyde glyoxal (G) was reacted with melamine to prepare novel melamine-glyoxal (MG) resins. These MG resins were synthesized with different M/G molar ratios, and their properties were tested. The liquid and hardened MG resins were characterized, and the oligomers formed and their distribution were determined by C-13 NMR and matrix assisted laser desorption ionization time of flight mass spectrometry (MALDI-TOF-MS). The energy of activation of cross-linking of the MG resins was found to be higher than for MF resins. This rendered some applications possible, such as MG resins impregnated paper surface overlays and showed such resins limitations as binders for wood particleboard. The MG resins remained stable at ambient temperature for more than 12 days.

}, author = {S. DENG and A. PIZZI and G. DU and M.C. LAGEL and L. DELMOTTE and S. ABDALLA} } @article {1625, title = { Automotive brake pads made with a bioresin matrix }, journal = { INDUSTRIAL CROPS AND PRODUCTS }, volume = {85}, year = {2016}, pages = {372-381}, abstract = {

By using biosourced raw materials such as condensed tannins and furfuryl alcohol a biosourced thermoset resin was developed and used and tested for a new application: as a resin matrix of automotive brake pads. The manufacturing procedure developed is particularly easy. Automotive brake pads based on this green resin were characterized and showed excellent braking properties and wear resistance when used under real car, full scale test conditions. Their mechanical resistance was found to be comparable to that of commercial automotive brake pads bonded with synthetic phenolic resins. They tolerated well the severe stresses induced by a strong braking like an emergency braking: 50 km/h (31 mph) until complete standstill and showed braking distances comparable or shorter than commercial brake pads.

}, url = {https://hal.univ-lorraine.fr/hal-01599596}, author = {M.C. LAGEL and L. HAI and A. PIZZI and M.C. BASSO and L. DELMOTTE and S. ABDALLA and A. ZAHED and F.M. AL-MARZOUKI} } @article {1648, title = { Characterization of Merbau Wood Extract Used as an Adhesive in Glued Laminated Lumber }, journal = { FOREST PRODUCTS JOURNAL }, volume = {66}, year = {2016}, pages = {313-318}, abstract = {

Polyphenolic chemical compounds were extracted from merbau (Intsia spp.) wood with an aqueous medium at a 1:4 ratio (wt/wt) heated to 80 degrees C for 3 hours. The extracted compounds were characterized by matrix assisted laser desorption ionization time of flight spectrometry and included oligomers with up to six repeating flavonoid units, with resorcinol being the dominant compound paired with a minor amount of catechin units. The extract had a Stiasny number of 92.4 percent. The extract was combined with formaldehyde to produce a resin that was used to manufacture five-layer glued laminated lumber using four wood species, namely, pangsor (Ficus callosa), mindi (Melia azedarach), pine (Pinus merkusii), and mangium (Acacia mangium). The modulus of rupture and shear strength of mangium glued laminated lumber met the requirements of the Japanese standard (\"Japanese Agricultural Standard for Structural Glued Laminated Timber,\" 2003), and all products had a low formaldehyde emission.

}, author = {A. SANTOSO and Y.S. HADI and A. PIZZI and M.C. LAGEL} } @article {1637, title = { MALDI-TOF, C-13 NMR and FT-MIR analysis and strength characterization of glycidyl ether tannin epoxy resins }, journal = { INDUSTRIAL CROPS AND PRODUCTS }, volume = {83}, year = {2016}, pages = {177-185}, abstract = {

The chemical modification of tannin through epoxidation is a way to develop new applications for tannins and to improve tannin resins performances. In this paper the influence of reaction conditions was studied. Commercial tannin bark extract was epoxidized. The resulting products were characterized by FT-IR Spectroscopy, C-13 NMR and MALDI-TOF mass spectrometry. Tannin epoxidation has been confirmed by C-13 NMR and FT-MIR. Wood specimens were bonded with mixed diglycidyl ether of bisphenol A (DGEBA) and glycidyl ether tannin (GET) epoxy resin formulations. The bonded joints were tested for block shear strength. The results obtained indicated that such formulations, based on up to 75\% commercial natural materials are capable of satisfying the shear strength requirements of relevant international standards.

}, author = {S. JAHANSHAHI and A. PIZZI and A. ABDULKHANI and K. DOOSTHOSEINI and A. SHAKERI and M.C. LAGEL and L. DELMOTTE} } @article {1621, title = { Spectroscopy analysis of phenolic and sugar patterns in a food grade chestnut tannin }, journal = { FOOD CHEMISTRY }, volume = {203}, year = {2016}, pages = {425-429}, abstract = {

Tannin of chestnut (Castanea sativa Mill.) wood, commonly used in winemaking was characterised with a spectroscopy qualitative approach that revealed its phenolic composition: several vibrational diagnostic bands assigned using the Attenuated Total Reflectance-Infrared Spectroscopy, and fragmentation patterns obtained using the Laser-Desorption-Ionization Time-of-Flight technique evidenced polygalloylglucose, e.g. castalagin/vescalagin-like structures as the most representative molecules, together with sugar moieties. The implication of these findings on winemaking application and the potential influence of the chemical structure on the sensory properties of wine are discussed.

}, author = {A. RICCI and M.C. LAGEL and G.P. PARPINELLO and A. PIZZI and P.A. KILMARTIN and A. VERSARI} } @article {1640, title = { THERMOGRAVIMETRIC ANALYSIS OF ANNINGRE TANNIN RESIN }, journal = { MADERAS-CIENCIA Y TECNOLOGIA }, volume = {18}, year = {2016}, pages = {245-252}, abstract = {

Three formulations of aningre tannin resins containing in order the paraformaldehyde powder, hexamethylenetetramine and aqueous glyoxal as hardeners were developed. Their thermogravimetric analysis have shown that they begin to decompose respectively from 135 degrees C, 145 degrees C and 140 degrees C. About 24\%, 40\% and 39\% solid residues of their initial masses exist at the end of the analysis. Thermomechanical analysis has shown that the formulation containing paraformaldehyde powder as hardener has the best rigidity and the worst contains the hexamethylenetetramine. All formulations have different thermal degradation, differences were more significant between 400 and 900 degrees C. The decomposition of hardeners become more significant from 400 degrees C.

}, author = {N. KONAI and D. RAIDANDI and A. PIZZI and P. GIRODS and M.C. LAGEL and M. KPLE} } @article {1401, title = {Aningre tannin extract characterisation and performance as an adhesive resin}, journal = {Ind. Crop. Prod}, volume = { 77}, year = {2015}, pages = {225{\textendash}231 }, author = {N. KONAI and A. PIZZI and D. RAIDANDI and M.C. LAGEL and C. L{\textquoteright}HOSTIS and C. SAIDOU and A. HAMIDO and S. ABDALLA and F. BAHABRI and A. GANASH} } @article {1572, title = { Cutting and grinding wheels for angle grinders with a bioresin matrix }, journal = { INDUSTRIAL CROPS AND PRODUCTS }, volume = {67}, year = {2015}, pages = {264-269}, abstract = {

By using biosourced raw materials such as condensed tannins and furfuryl alcohol a biosourced thermoset resin was developed and used and tested for a new application: as a resin matrix of solid grinding wheels for angle grinders. The manufacturing procedure developed is particularly easy. Cutting and grinding discs based on this green resin were used for bonding different sizes of abrasive particles of aluminium trioxide. These discs were characterized and showed excellent abrasiveness and cutting properties. Their mechanical resistance was found to be comparable to that of commercial grinding discs bonded with synthetic phenolic resins. They tolerated well the severe stresses induced on them at 11,000 revolutions per minute (rpm) by operation in an angle grinder when grinding or cutting steel.

}, url = {https://hal.univ-lorraine.fr/hal-01598432}, author = {M.C. LAGEL and J. ZHANG and A. PIZZI} } @article {1577, title = { Development and characterization of abrasive grinding wheels with a tannin-furanic resins matrix }, journal = { INDUSTRIAL CROPS AND PRODUCTS }, volume = {65}, year = {2015}, pages = {343-348}, abstract = {

A 100\% biosourced thermoset material based on condensed tannin-furanic thermoset resins, thus using biosourced raw materials, has been used as the resin matrix of solid grinding wheels. Moreover, this new thermoset material is produced by a simple process, which can be easily industrialized. Grinding wheels based on this resin bonding different mineral and organic abrasive powders were developed and characterized. These grinding wheels show excellent abrasiveness properties when compared to a commercial grinding wheel.

}, url = {https://hal.univ-lorraine.fr/hal-01597078}, author = {M.C. LAGEL and A. PIZZI and M.C. BASSO and S. ABDALLA} } @article {1558, title = { First Tools for Tannin-Furanic Foams Design }, journal = { BIORESOURCES }, volume = {10}, year = {2015}, pages = {5233-5241}, abstract = {

Formaldehyde-free quebracho tannin foams were prepared for the first time. Several simple formulations have been presented in order to study the capital influence of each component on foaming and therefore on the characteristics of the obtained foams. Incorporation of a non-ionic surfactant leads to smaller cells and a more homogeneous cell size distribution. Cross-linking agents improve the mechanical properties of foams. A combination of different catalysts allows control of the ratio between the expansion/hardening processes. The understanding of the roles and interactions of the different components of formulation make possible the design of tannin foams having specific properties.

}, url = {https://hal.archives-ouvertes.fr/hal-01294586}, author = {M.C. BASSO and M.C. LAGEL and A. PIZZI and A. CELZARD and S. ABDALLA} } @article {1182, title = {Alkaline tannin rigid foams. }, journal = {J. Renewable Mat.}, volume = {2}, year = {2014}, month = {2014}, chapter = {182}, author = {M.C. BASSO and S. GIOVANDO and A. PIZZI and M.C. LAGEL and A. CELZARD} } @article {1197, title = {Development and characterisation of abrasive grinding wheels with a tannin-furanic resin matrix. }, journal = {Ind. Crops \& Prod.}, year = {2014}, month = {11/2014}, author = {M.C. LAGEL and A. PIZZI and M.C. BASSO and S. ABDALLA} } @article {1177, title = {Development and characterization of phenolic foams with phenol-formaldehyde-chestnut tannins resin.}, journal = {J. Renewable Mat.}, volume = {2}, year = {2014}, month = {2014}, chapter = {220}, author = {M.C. LAGEL and A. PIZZI and S. GIOVANDO and A. CELZARD} } @article {1165, title = {D{\'e}veloppement et caract{\'e}risation de mousses {\`a} base de tannin de quebracho.}, journal = {Mat{\'e}riaux \& Techniques}, year = {2014}, month = {2014}, author = {M.C. LAGEL and A. MARTINEZ-DE-YUSO and A. PIZZI and A. CELZARD and V. FIERRO} } @article {1185, title = {Matrix-assisted laser desorption-ionization time of flight (MALDI-TOF) mass spectrometry of phenol-formaldehyde-chestnut tannin resins. }, journal = {J. Renewable Mat.}, volume = {2}, year = {2014}, month = {2014}, chapter = {207}, author = {M.C. LAGEL and A. PIZZI and S. GIOVANDO} } @article {1192, title = {Phenol-wheat protein-formaldehyde adhesives for wood-based panels. }, journal = {ProLigno}, volume = {10}, year = {2014}, month = {2014}, chapter = {3}, author = {M.C. LAGEL and A. PIZZI and A. REDL} } @article {1174, title = {Structure and properties of rigid foams derived from quebracho tannin.}, journal = {Materials \& Design }, year = {2014}, month = {2014}, author = {A. MARTINEZ-DE-YUSO and M.C. LAGEL and A. PIZZI and V. FIERRO and A. CELZARD} }