@article{kumar_sandeep_alavi_truong_gorga_2010, title={Effect of Type and Content of Modified Montmorillonite on the Structure and Properties of Bio-Nanocomposite Films Based on Soy Protein Isolate and Montmorillonite}, volume={75}, ISSN={["1750-3841"]}, DOI={10.1111/j.1750-3841.2010.01633.x}, abstractNote={Abstract:  The nonbiodegradable and nonrenewable nature of plastic packaging has led to a renewed interest in packaging materials based on bio‐nanocomposites (biopolymer matrix reinforced with nanoparticles such as layered silicates). Bio‐nanocomposite films based on soy protein isolate (SPI) and modified montmorillonite (MMT) were prepared using melt extrusion. The effect of different type (Cloisite 20A and Cloisite 30B) and content (0% to 15%) of modified MMT on the structure (degree of intercalation and exfoliation) and properties (color, mechanical, dynamic mechanical, thermal stability, and water vapor permeability) of SPI‐MMT bio‐nanocomposite films were investigated. Extrusion of SPI and modified MMTs resulted in bio‐nanocomposites with exfoliated structures at lower MMT content (5%). At higher MMT content (15%), the structure of bio‐nanocomposites ranged from intercalated for Cloisite 20A to disordered intercalated for Cloisite 30B. At an MMT content of 5%, bio‐nanocomposite films based on modified MMTs (Cloisite 20A and Cloisite 30B) had better mechanical (tensile strength and percent elongation at break), dynamic mechanical (glass transition temperature and storage modulus), and water barrier properties as compared to those based on natural MMT (Cloisite Na+). Bio‐nanocomposite films based on 10% Cloisite 30B had mechanical properties comparable to those of some of the plastics that are currently used in food packaging applications. However, much higher WVP values of these films as compared to those of existing plastics might limit the application of these films to packaging of high moisture foods such as fresh fruits and vegetables.}, number={5}, journal={JOURNAL OF FOOD SCIENCE}, author={Kumar, P. and Sandeep, K. P. and Alavi, S. and Truong, V. D. and Gorga, R. E.}, year={2010}, pages={N46–N56} } @article{kumar_moreland_chilton_1994, title={2H-1,4-BENZOXAZIN-3(4H)-ONE, AN INTERMEDIATE IN THE BIOSYNTHESIS OF CYCLIC HYDROXAMIC ACIDS IN MAIZE}, volume={36}, ISSN={["0031-9422"]}, DOI={10.1016/S0031-9422(00)90458-8}, abstractNote={2H-1,4-Benzoxazin-3(4H)-one has been identified as an intermediate in the biosynthesis of cyclic hydoxamic acids in maize by showing that the deuterium labelled compound is incorporated into DIMBOA with high retention of deuterium and high efficiency, by trapping radioactivity from [14C] anthranilic acid in a pool of unlabelled benzoxazinone administered to maize shoots, and by showing that benzoxazinone is oxidized to DIBOA by maize microsomes in an NADPH- and oxygen-dependent reaction.}, number={4}, journal={PHYTOCHEMISTRY}, author={KUMAR, P and MORELAND, DE and CHILTON, WS}, year={1994}, month={Jul}, pages={893–898} } @article{kumar_gagliardo_chilton_1993, title={SOIL TRANSFORMATION OF WHEAT AND CORN METABOLITES MBOA AND DIM2BOA INTO AMINOPHENOXAZINONES}, volume={19}, ISSN={["0098-0331"]}, DOI={10.1007/BF00980682}, abstractNote={The defensive cyclic hydroxamates 7-methoxy-2,4-dihydroxy-1,4(2H)-benzoxazin-3-one (DIMBOA) and 7,8-dimethoxy-2,4-dihydroxy-1,4(2H)-benzoxazin-3-one (DIM2BOA) of wheat and corn are transformed in nonsterile soil, via 6-methoxy-2(3H)-benzoxazolone (MBOA) and 6,7-dimethoxy-2(3H)-benzoxazolone (M2BOA) respectively, into 2-amino-7-methoxy-3H-phenoxazin-3-one and 2-amino-4,6,7-trimethoxy-3H-phenoxazin-3-one. The soil transformation is similar of that undergone by the rye metabolite 2(3H)-benzoxazolone (BOA) into 2-amino-3H-phenoxazin-3-one. The transformations to phenoxazinones are not observed in sterile soil. The 2-amino-3H-phenoxazin-3-one inhibits barnyard grass radicle elongation, but the methoxylated aminophenoxazinones are not significantly inhibitory.}, number={11}, journal={JOURNAL OF CHEMICAL ECOLOGY}, author={KUMAR, P and GAGLIARDO, RW and CHILTON, WS}, year={1993}, month={Nov}, pages={2453–2461} }