|
Click on the underlined title to access the document or go back to the Search Results screen to download the PDF version. If you are not an ASABE member or if your employer has not arranged for access to the full-text, Click here for options. Evaluation of Processing Options for Transgenic Sugarcane Tissue Expressing Bovine LysozymePublished by the American Society of Agricultural and Biological Engineers, St. Joseph, Michigan www.asabe.org Citation: 2009 Reno, Nevada, June 21 - June 24, 2009 096678.Authors: Susan L Woodard, Steven G White, Mona B Damaj, Javier Gonzalez, T Erik Mirkov, Zivko L Nikolov Keywords: Leave the word "Keywords." then type keywords or key phrases, separated by commas. List both specific and general terms that will aid in searches. The ASABE website has suggested keywords but you are not limited to these. Bovine lysozyme, an antimicrobial enzyme, was expressed in sugarcane using constitutive promoters. As a result, both stalks and leaves express this enzyme, albeit at different levels. The goal of this work was to assess the various options available for processing transgenic sugarcane tissue expressing bovine lysozyme and ultimately develop a process for efficient recovery of this enzyme from sugarcane tissue. Since sugarcane stalk is traditionally pressed for sucrose release, we wanted to assess whether the enzyme could also be released through conventional stalk processing. Single pressing of shredded / chopped sugarcane stalks was partially (~50%) effective in releasing the enzyme from stalk tissue. This finding was weighed versus extraction of stalk and leaf tissue. In general, lysozyme extraction from leaves and stalks required particle size reduction, high-shear mixing and in some cases pH and ionic strength adjustment. We ultimately selected stalk extraction conditions that gave efficient release of active enzyme with a minimal processing time. |