Progress 10/01/12 to 09/30/13
Target Audience:Submitted patent application for "high performance" version of dynamic accumulation technology. Developed automated prototype of high performance dynamic accumulation system. Further developed automated prototype for delivery, testing and evaluation by US Army Food Laboratory. Changes/Problems:
What opportunities for training and professional development has the project provided?Machine automation and ergonomic design of instruments. How have the results been disseminated to communities of interest?Conferences, scientific andtrade journals. What do you plan to do during the next reporting period to accomplish the goals?Continue development of this technology and expand capabilities into testing at different relative humidities. Also develop a dynamic accumulation based test for water vapor transmission.
What was accomplished under these goals?
Improved method for measuring oxygen transmission rate of packaging materials. Technique drastically reduces time required to obtain measurment via dynamic accumulation. Technique also boosts resolution of steady-state method for performing the measurement.
Abdellatief A, Welt BA, Butler J, McLamore E, Teixeira AA, Shukla S. 2014. Predictive modeling of oxygen transmission through micro-perforations for packaging applications. Journal of Applied Packaging Research. 7(2):17-31.
Kurniawan Y, Purwanto YA, Welt BA, Purwadaria HK, Abdellatief A, Sunarti TC, Purwanto S. 2014. Effect of plasticizer on oxygen permeability of cast polylactic acid (PLA) films determined using dynamic accumulation method. Journal of Applied Packaging Research. 6(2):51-57.
Progress 10/01/11 to 09/30/12
OUTPUTS: Activities: Conducted experiments on gas permeation of food packaging and other materials. Conducted experiments on algae growth for purpose of biomaterials. Taught and mentored graduate and undergraduate students in methods related to packaging permeability. Events: Attended conferences related to food packaging, food traceability and agricultural and biological engineering. Services: Served on expert food traceability panel for the Institute of Food Technologists. Products: Developed new technology to accelerate package permeation testing. PARTICIPANTS: Commercialization partner for dynamic accumulation gas permeation technology is Oxysense, Inc., Dallas, TX. TARGET AUDIENCES: Target audience for gas permeation technology is the packaging and materials industries. PROJECT MODIFICATIONS: Proof-of-concept second generation technology was successful, therefore commercialization of technology is proceeding.
Changes in knowledge: Discovered new method to accelerate gas permeation testing. Changes in actiona: Licenced permeation technology. Involved in commercialization of technology.
- Welt BA, Blanchfield JR. 2012. Food Traceability IUFost Scientific Information Bulletin. http://www.iufost.org/iufost-scientific-information-bulletins-sib.
- Aso SN, Welt BA, Teixeira AA, Achinewhu SC. 2012. Effects of radiation processing on sensory quality of food. Journal of Applied packaging Research. 6(2):93-110.
- Ji W., Welt BA. 2012. Concise Review: Irradiation of food packaging materials. Journal of Applied packaging Research. 6(1):55-65.
- Abdellatief A, Welt BA. 2012. Comparison of new dynamic accumulation method for measuring oxygen transmission rate (OTR) of packaging against the steady-state method described by ASTM D3985. Journal of Packaging Science and Technology. DOI: 10.1002/pts.1974.
- Li Y, Yang W, Chung SY, Chen H, Ye M, Teixeira AA, Gregory JF, Welt BA, Shriver S. 2012. Effect of Pulsed Ultraviolet Light and High Hydrostatic Pressure on the Antigenicity of Almond Protein Extracts. Food and Bioprocess Technology. 05/2012. DOI:10.1007/s11947-011-0666-8.
Progress 10/01/10 to 09/30/11
OUTPUTS: My research in the area of food packaging was in three areas including food traceability, packaging material permeation testing and developing renewable sources for packaging polymer precursor molecules via algal diatoms. Outputs related to food traceability include development and proposal of a novel framework for a global food traceability system revolving around the concept of "Critical Tracking Events" or CTEs. A Critical Tracking Event is defined as "any occurrence involving an item within the supply chain at a specific location and time that is associated with collection and storage of data useful for associating an item or related items to the specific occurrence at a later time and is determined to be necessary for identifying the actual path of an item through the supply chain." The beauty of the CTE concept is that it is a bottom-up approach rather than a top-down, one size fits all solution. Since each supply chain participant is most knowledgeable about their own operations, they are in the best position to know which food handling operations, or events, are critical to ultimately tracing food products and their ingredients through their operation. Additionally, since different supply chain participants use different types and levels of technology, they are most knowledgeable about how best to collect CTE data. Finally, since every event is specific to a particular item, and data required to identify the event is minimal (e.g. What Where When), CTE based food traceability inherently provides a structure for effective data security. Reports, emails and documents describing the CTE concept have been created in conjunction with my involvement serving on an expert panel for the Institute of Food Technologists. Outputs related to food packaging permeation testing include continued development of a new, patent pending technique for measuring oxygen permeation in packaging materials. Outputs have been mostly in the form of progress reports to my corporate sponsor, Oxysense, Inc. Additionally, research results have been reported in international and national scientific conferences. A related publication is currently under review in a packaging related scientific journal. Outputs related to sustainable packaging involved selection of a promising marine diatom species to study further for its potential to provide molecular precursors that may be used to produce common commodity plastics that until now are derived from petroleum. A unique model has been developed to predict both biomass and lipid productivity of the organism under various conditions. PARTICIPANTS: Nothing significant to report during this reporting period. TARGET AUDIENCES: Nothing significant to report during this reporting period. PROJECT MODIFICATIONS: Nothing significant to report during this reporting period.
Food Traceability - The food traceability concept known as "Critical tracking Events" is being well received by industry, government and academia. The phrase "Critical Tracking Events" is now commonly used by the Institute of Food Technologists and the Food and Drug Administration. The concept is being further developed by a consortium of industry, government and academics under an FDA sponsored project led by the Institute of Food Technologists. Packaging Material Permeability - Improvements in our technique for measuring gas transmission rates through packaging films has expanded from perforated to non-perforated films and whole packages. These advances have been incorporated in the latest commercial products currently being marketed by Oxysense, Inc.
- Kim Y, Welt BA, Talcott ST. 2011. The impact of packaging materials on the antioxidant phytochemical stability of aqueous infusions of green tea (Camellia sinensis) and Yaupon Holly (Ilex vomitoria) during cold storage. Journal of Agriculture and Food Chemistry. Web: 24 March 2011.
- McCombie WC and Welt BA. 2011. Radio Frequency Identification Technology. Kirk-Othmer Encyclopedia of Chemical Technology. Wiley & Sons, Inc., NJ.
- Vargas LF, Welt BA, Pullammanappallil P. 2011. Biodegradation of steam-treated polylactic acid (PLA) under composting conditions. Journal of Applied Packaging Research. 5(2)107-119.
- Welt BA, Wright SL. 2011. When you hear biofuels think plastics. Packaging World. 11:30.