Shelf life evaluation of active adhesive based in soy protein concentrate

LARREGLE A.; RUSECKAITE R.A.; CHALAPUD, M.; CIANNAMEA E.M; MARTUCCI J.F.; STEFANI P.M

MAR DEL PLATA

Simposio; SLAP 2018; 2018

Instituto de Ciencia y Tecnología en Materiales (INTEMA)

The main motivation for today?s renewed interest in bio-based adhesives is the acute sensitivity of the general public with the environment and its protection (1). According to previous studies, soybean has good potential for the preparation of bio-adhesives for industrial applications (2). The technologies for soy adhesives use different cross-linking agents to provide potentials for adhesives to be used in plywood and particleboard and medium-density fiber board (MDFB) as well as other engineered wood products (3). However, application of soy-based adhesives has been limited. This is partially due to the composite?s sensitive to biological degradation (4). It was possible to greatly enhance the mold resistance of soy bean adhesives with the addition of preservatives (5). The use of natural additives, like carvacrol, could be an interesting election due their well-recognized antimicrobial properties (6). The objective of this study is to determine the effectiveness of carvacrol in protecting soybean concentrate adhesives from mold growth over time, as well as maintaining its adhesion capacity to develop particleboards from rice husks.