@article{tyagi_gutierrez_lucia_hubbe_pal_2022, title={Evidence for antimicrobial activity in hemp hurds and lignin-containing nanofibrillated cellulose materials}, volume={29}, ISSN={0969-0239 1572-882X}, url={http://dx.doi.org/10.1007/s10570-022-04583-w}, DOI={10.1007/s10570-022-04583-w}, number={9}, journal={Cellulose}, publisher={Springer Science and Business Media LLC}, author={Tyagi, Preeti and Gutierrez, Joseph N. and Lucia, Lucian A. and Hubbe, Martin A. and Pal, Lokendra}, year={2022}, month={Apr}, pages={5151–5162} } @article{tyagi_gutierrez_nathani_lucia_rojas_hubbe_pal_2021, title={Hydrothermal and mechanically generated hemp hurd nanofibers for sustainable barrier coatings/films}, volume={168}, ISSN={["1872-633X"]}, url={https://doi.org/10.1016/j.indcrop.2021.113582}, DOI={10.1016/j.indcrop.2021.113582}, abstractNote={Residual hemp (Cannabis sativa) hurd fibers obtained from hydrothermal, carbonate, and kraft treatments were the resources used to obtain lignocellulosic nanofibers (LCNF) by using an ultra-fine friction grinder. The morphological, crystallinity, and chemical characteristics of the nanocellulose films were carried out using SEM, XRD, EDX and ToF-SIMS. Water barrier properties of the same were measured in terms of water contact angle, water vapor permeability (WVP) and water absorption. The barrier properties were found to be dependent not only on the lignin content and lignin distribution, but also on the film density and porous structure. LCNF films and coatings showed much higher water contact angle (WCA) (80°-102°) than films produced from the bleached CNF. WVP was found to be more dependent on the density of films than lignin content. Overall, LCNF-based films and coatings derived from hemp hurd residual fibers can contribute to a circular economy and sustainability.}, journal={INDUSTRIAL CROPS AND PRODUCTS}, publisher={Elsevier BV}, author={Tyagi, Preeti and Gutierrez, Joseph N. and Nathani, Ved and Lucia, Lucian A. and Rojas, Orlando J. and Hubbe, Martin A. and Pal, Lokendra}, year={2021}, month={Sep} } @article{gutierrez_agate_venditti_pal_2021, title={Study of tobacco‐derived proteins in paper coatings}, volume={112}, ISSN={0006-3525 1097-0282}, url={http://dx.doi.org/10.1002/bip.23425}, DOI={10.1002/bip.23425}, abstractNote={AbstractReplacing synthetic polymers with renewable alternatives is a critical challenge for the packaging industry. This research investigated the use of leaf‐based proteins as a sustainable co‐binder in the coating formulations for paper‐based packaging and other applications. Protein isolates from tobacco leaf and alfalfa concentrates were characterized using the Pierce protein assay, Kjeldahl nitrogen, and gel electrophoresis. The proteins were tested as co‐binders in a typical latex‐based paper coating formulation. The rheology and water retention properties of the wet coating and the surface, optical, structural, and strength properties of coated papers were measured. The coating performance was affected by the purity, solubility, and molecular weight of the tobacco protein and exhibited a shear‐thinning behavior with lower water retention than soy protein. Analysis by scanning electron microscopy and time of flight secondary ion mass spectroscopy on the dried coating layer containing tobacco protein showed enhanced porosity (advantageous for package glueability) relative to the control latex coating. The tobacco protein offers adequate coverage and coating pigment distribution, indicating that this protein can be a suitable option in coatings for packaging applications.}, number={5}, journal={Biopolymers}, publisher={Wiley}, author={Gutierrez, Joseph N. and Agate, Sachin and Venditti, Richard A. and Pal, Lokendra}, year={2021}, month={Apr} } @article{evaluation of paper straws versus plastic straws: development of a methodology for testing and understanding challenges for paper straws_2019, url={https://ojs.cnr.ncsu.edu/index.php/BioRes/article/view/BioRes_14_4_8345_Gutierrez_Paper_Straws_Challenges}, journal={Bioresources}, year={2019}, month={Sep} }