biopolymers-and-bioplastics-2016_posters-accepted-abstracts

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Biopolymers and Bioplastics 2016
September 12-14, 2016
Volume 7, Issue 5(Suppl) J Bioremed Biodeg 2016
ISSN: 2155-6199 JBRBD, an open access journal
conferenceseries .com
September 12-14, 2016 San Antonio, USA
3rd International Conference and Exhibition onBiopolymers & Bioplastics
J Bioremed Biodeg 2016, 7:5(Suppl)
Preparation of catalyst-loaded viscose rayon fibers with sustainable antimicrobial functionality
Mekuriaw A Kebede, Toyoko Imae and Sabrina
National Taiwan University of Science and Technology, Taiwan
Viscose rayon cellulose fiber was first selectively oxidized on its surface without significant loss of its pristine fiber structure
so that carboxylate functional group was introduced on the fiber. Separately, uniformly dispersed silver nanoparticles
(AgNPs) having sizes of 2-5 nm were prepared by using amine-terminated fourth generation poly (amido amine) dendrimer
as a capping agent. Then, the AgNPs were immobilized on viscose rayon fibers through chemical reaction to form amide bond
between terminal amine groups of dendrimer protector with the carboxylic acids on oxidized fibers. The loaded nanoparticles
did not release from the fiber even after 60 times washings. The AgNPs-loaded fibers (0.3 wt.%) exhibited excellent biocidal
activity against E. coli. Therefore, this procedure can be effective for the prolonged sustainment of similar bioactive agents on
fibers and maximize the efficiency of the cellulose product for anticipated purposes.
Assessment of bioplastic producing potential of Bacillus subtilis using some agro residues as carbon source
Abdullahi B Sallau and Bashir Salim
Ahmadu Bello University Nigeria
The assessment of bioplastic producing potential of Bacillus subtilis using a variety of pretreated agro-residues was carried
out. The agro residues were rice husks, molasses, bagasse, and corn cobs. Acid, alkaline and oxidative pretreatment of the
agro-residues were done using standard procedures. Bioplastics produced were extracted using chloroform precipitation and
quantified spectrophotometer. Acid, base and peroxide concentrations in g/L of polyhydroxybutyrate (PHB) were obtained for
rice husks 1.52±0.02, 1.82±0.01, and 1.70±0.01; molasses 1.82±0.01, 1.52±0.02, and 1.69±0.01; bagasse 0.87±0.06, 1.10±0.10,
and 0.96±0.07 and; corn cobs 0.5±0.00, 0.77±0.06, and 0.60±0.10. The bioplastic yield of the agro-residues for acid, base
and peroxide pretreatments were: rice husks 50.33±0.76, 53.69±2.23 and 53.29±0.15; molasses 54.94±0.14, 50.55±0.25 and
53.09±0.17%; bagasse 53.33±6.68, 55.00±0.25 and 54.50±7.12 and; corn cobs 51.85±3.21, 63.94±2.59 and 60.11±8.89. Statistical
analysis revealed that PHB concentration of alkaline pretreated rice husk had a significant (p<0.05) higher value than other
pretreatments. However, among all the agro-residues used peroxide pretreated corn cobs had a significantly (p<0.05) higher
percentage yield of bioplastic (63.94±2.59).