Luke LaBorde, Ph.D.

Lester Earl and Veronica Casida Development Professor for Food Safety

    Expertise:

    Tracking Listeria monocytogenes in produce production, packing, and processing environments
    Food safety validation of mushroom growing, packing, and processing procedures
    Farm food safety, Good Agricultural Practices (GAP) training
    Hazards Analysis and Risk Based Preventive Controls (HACCP) training
    Technical assistance to home and commercial food processors
    Food Safety Modernization Act (FSMA)

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    About Me

    Featured Web Pages:

    Research (30%):

    • Quality and safety of fruits, vegetables, and mushrooms
    • Mushroom food safety interventions
    • UV induced degradation of juice chemical constituents

    Extension (70%):

    • Quality and safety of fruits, vegetables, and mushrooms
    • Good Agricultural Practices (GAP) for fresh produce and mushroom growers
    • HACCP based food safety and sanitation programs for fruit, vegetable, and mushroom processors
    • Technical assistance to food entrepreneurs
    • Home food preservation

    Publications:

    Selected Reviewed Research Publications:

    Draper AD, Doores SD, Gourama H, LaBorde LF. 2016. Microbial survey of Pennsylvania surface water used for irrigating produce crops. Journal of Food Protection. 79(6):902-912.

    Murugesan L, Kucerova Z, Knabel SJ, LaBorde LF. 2015. Predominance and distribution of a persistent Listeria monocytogenes clone in a commercial fresh mushroom processing environment. Journal of Food Protection. 78(11):1988-1998.[Abstract]

    Nayak R, Tobin D, Thomson J, Radhakrishna R, LaBorde LF. 2015. Evaluation of on-farm food safety programming in Pennsylvania: Implications for Extension. Journal of Extension. February 26, 2015. Link to article.

    Kokkinidou S, Floros JD, LaBorde LF. 2014. Kinetics of the thermal degradation of patulin in the presence of ascorbic acid. Journal of Food Science. 79(1):T108-T114.

    Tikekar RV, Anantheswaran RC, LaBorde LF. 2014. Patulin degradation in a model apple juice system and in apple juice during ultraviolet processing. Journal of Food Processing and Preservation. 38(3):924-934.

    Weil J, Beelman RB, Cutter CN, LaBorde LF. 2013. Inactivation of human pathogens during Phase II composting of manure-based mushroom growth substrate. Journal of Food Protection. 76(8):1393-1400.

    Viswanath P, Murugesan L, Knabel SJ, Verghese B, Chikthimmah N, LaBorde LF. 2013. Incidence of Listeria monocytogenes and Listeria spp. in a small-scale mushroom production facility. Journal of Food Protection. 76(4):608-615.

    Tobin D, Thomson J, LaBorde L, Radhakrishna, R. 2013. Factors affecting growers' on-farm food safety practices: Evaluation findings from Penn State Extension programming. Journal of Food Control. 31(1):73-80. [Available online]

    LaBorde LF and Pecchia J. 2012. Effect of irrigation water nitrate levels on post-harvest mushroom nitrates. Mushroom News. 60(11):4-11. November 2012.

    Tobin D, Thomson J, LaBorde L, Radhakrishna, R. 2012. Mixed-mode surveys: A strategy to reduce costs and enhance response rates. Journal of Extension. 50(6) 6TOT8. December 2012. [Available online]

    Tobin D, Thomson J, LaBorde L. 2012. Consumer perceptions of produce safety: A study of Pennsylvania. Food Control, 26(2):305-312. [Available online].

    Tikekar RV, Anantheswaran RC, Elias RJ, LaBorde LF. 2011. Ultraviolet-induced oxidation of ascorbic acid in a model juice system: Identification of degradation products. J Agric Food Chem. 2011 59(15):8244-8. [Abstract]

    Tikekar R, Anantheswaran RC, LaBorde LF. 2011. Ascorbic acid degradation in a model apple juice system and in apple juice during ultraviolet light processing and storage. Journal of Food Science 76(2):H62-H71. [Abstract]

    Tobin D, Thomson J, LaBorde L, Bagdonis J. 2011. Developing GAP Training for Growers: Perspectives from Pennsylvania Supermarkets. Journal of Extension. Web-based 49(5) 5RIB7. October 2011. [Link]

    LaBorde LF. 2010. “Controlling Food Safety Hazards in the Vegetable Industry – The HACCP Approach” In: Handbook of Vegetables and Vegetable Processing. Chapter 22. pp. 443-460. Ed. Nirmal KA. Wiley-Blackwell. [Link]

    Tikekar R, LaBorde LF, Anantheswaran RC. 2010. “Fruit Juices - Ultraviolet Light Processing” In: Encyclopedia of Agricultural, Food, and Biological Engineering. Second Edition. 1:(1), 675-680.Taylor and Francis Group. [Link]

    Nieto-Montenegro S, Brown JL, LaBorde LF. 2008. Development and assessment of pilot food safety educational materials and training strategies for Hispanic workers in the mushroom industry using the Health Action Model. Food Control 19:616–633. [Link]

    Chikthimmah N, LaBorde LF, Beelman RB. 2007. The effect of washing and slicing operations on the survival behavior of Listeria monocytogenes and Salmonella Sp. in fresh mushrooms during postharvest storage. Mushroom News. 55(9):4-13.

    Okull DO, Demirci A, Rosenberger D, LaBorde LF. 2006. Susceptibility of Penicillium expansum spores to sodium hypochlorite, electrolyzed oxidizing water and chlorine dioxide solutions modified with non-ionic surfactants. Journal of Food Protection, 69(8):1944–1948. [Link]

    Nieto-Montenegro S, Brown JL, LaBorde LF. 2006. Using the Health Action Model to plan food safety educational materials for Hispanic workers in the mushroom industry. Food Control 17:757–767. [Link]

    Fenton GD, LaBorde LF, Radhakrishna RB, Brown JL, Cutter CN. 2006. Comparison of knowledge and attitudes using computer-based and face-to-face personal hygiene training methods in food processing facilities. Journal of Food Science Education. 5:45-50. [Link]

    Fatemi P, Knabel SJ, LaBorde LF, Patton J, Annous B, Sapers GM. 2006. Influence of punctures, cuts and apple surface morphologies on penetration and growth of Escherichia coli O157:H7. Journal of Food Protection. 69(2):267–275. [Abstract]

    Chikthimmah N, LaBorde LF, Beelman RB. 2005. Hydrogen peroxide and calcium chloride added to irrigation water as a strategy to reduce bacterial populations and improve quality of fresh mushrooms. Journal of Food Science. 70(6):M 273-278. [Link]

    Nieto-Montenegro S, Brown JL, LaBorde LF. 2004. Evaluating food safety needs in the food industry using a "Worker-Experience Protocol". Food Protection Trends 24(9):676-681.

    Okull DO, LaBorde LF. 2004. Activity of electrolyzed oxidizing water against Penicillium expansum in suspension and on wounded apples. Journal of Food Science (69)1 FMS 23-27. [Link]

    Pandrangi S, LaBorde LF. 2004. Optimization of microbiological assay of folic acid and determination of folate content in spinach. International Journal of Food Science and Technology 39(5) 525-532. [Link]

    Pandrangi S, LaBorde LF. 2004. Retention of folate, carotenoids, and other quality characteristics in commercially packaged fresh spinach. Journal of Food Science 69(9):C702-7 [Link]

    LaBorde LF, Padilla-Zakour O. 2003. Application of low temperature heat treatments before retorting improves the quality of canned potatoes. Journal of Food Processing and Preservation 27(3):195-212. [Link]

    Pandrangi S., Anantheswaran RC, Elwell MW, LaBorde LF. 2003. Efficacy of sulfuric acid scarification treatment in eliminating Escherichia coli O157:H7 from alfalfa seeds prior to sprouting. Journal of Food Science. 68(2): 613-618. [Link]

    Chikthimmah N, LaBorde LF, Beelman RB. 2003. Critical factors affecting the destruction of Escherichia coli O157:H7 in apple cider treated with fumaric acid and sodium benzoate. Journal of Food Science. 68(4) p. 1438-1442. [Link]

    LaBorde LF. 2003. Impact of the Penn State food safety web site as a food safety information resource for extension professionals. Journal of Extension [On-line], 41(2). [Link]

    Outreach Publications:

    LaBorde LF. 2014. Validating the effectiveness of thermal sanitization treatments for eliminating Listeria monocytogenes from mushroom slicing equipment. Mushroom News. 62(9). September 2014

    LaBorde L.F. 2013. Impact of FDA Produce Safety Standards on Mushroom Substrate Composting. Mushroom News. 61(9):10-14. September 2013.

    Bucknavage, M, LaBorde LF. 2012. Lessons Learned from the Recent Cantaloupe Outbreak. Mushroom News. 60(2):4-7. February 2012.

    O’Patchen R, LaBorde LF. 2012. Dark and Light Peat Casing Soils Suppress Populations of Listeria and Salmonella. Mushroom News. 59(1):8-10. January 2012.

    LaBorde LF, 2010. Mushroom Good Agricultural Practices Program Industry-Wide Food Safety Standards for Fresh Mushroom Growing, Harvesting, and Shipping. Available online on the American Mushroom Institute (AMI) web site at http://www.mgap.org/.

    LaBorde LF. 2010. Good Agricultural Practices (GAP) Information from Penn State Now on the Web. Pennsylvania Fruit News. State Horticultural Association of Pennsylvania. 90(10):20. December 2010.

    LaBorde LF. 2010. "Maintaining the Safety of Pennsylvania Apples and Apple Products". In: The Pennsylvania Tree Fruit Production Guide. Chapter VIII. 2010-2011 edition. pp. 249-260. (updated biennually)

    LaBorde LF. 2010. "Cider Production - Managing Quality and Safety from Orchard to Bottle". In: The Pennsylvania Tree Fruit Production Guide. Chapter VII. 2010-2011 edition. pp. 275-286. (updated biennually)

    Chikthimmah N, Beelman RB, LaBorde LF. 2008. Sphagnum Peat Mushroom Casing Soils. Mushroom News 56(8):4-9. August 2008.

    LaBorde LF. 2008. Farm Food Safety – An Emerging Issue for the Retail Food Industry. Legislative Watch. p. 2. Pennsylvania Food Merchants Association and the Pennsylvania Convenience Store Council. April 2008.

    LaBorde LF, Doores S. 2007. Quality and safety of pasteurized cider held at retail display at room temperature. Pennsylvania Fruit News. State Horticultural Association of Pennsylvania. 87(2):65-70. State Horticultural Association of Pennsylvania.

    Nieto-Montenegro S, Brown JL, LaBorde LF. 2007. The Mushroom Industry Food Safety Training Kit. Training modules for harvesters and handlers of mushrooms. In English and Spanish. 159 pages.

    LaBorde LF. 2007. Good Agricultural Practices for Pennsylvania Fruit and Vegetable Growers. General guidance adapted from “Good Agricultural Practices and Good Handling Practices Audit Verification Program - Policy and Instructions Handbook”. USDA Agriculture Agricultural Marketing Service. Fruit and Vegetable Programs. Fresh Products Branch. Penn State University Department of Food Science. Available at Farm Food Safety Website.

    LaBorde LF., 2006 "Control of Listeria monocytogenes in Mushroom Growing and Packing Environments". Mushroom News. 54(11): 21-26 (Available online)

    Chikthimmah N, RB Beelman, LF LaBorde. 2006. Sphagnum peat-based casing soils do not permit the survival of Listeria monocytogenes and Salmonella sp. Mushroom News. 54(9): 6-13 (Available online)

    LaBorde LF. 2005. Guidelines for Developing a Mushroom Good Agricultural Practices Program. Penn State Department of Food Science and the American Mushroom Institute. (Available online)

    LaBorde LF. 2004. Avian Influenza Virus (AIV): Should the Mushroom Industry be Concerned? Mushroom News. 52(5): 14-15. May 2004.

    Knabel SJ, Fatemi P, Patton J, LaBorde LF, Annous B, Sapers GM. 2003. On farm contamination of horticultural products in the USA and strategies for decontamination. Food Australia. 55:580-586.

    LaBorde LF. 2003. "Guidelines for Producing Unpasteurized Cider in Pennsylvania". Penn State Cooperative Extension. (Available online)

    LaBorde LF. 2003. "Mushroom Farm Food Safety and Security Self-Assessment". Penn State Cooperative Extension. (Available online)

    LaBorde LF. 2003. "Practices for Safe Growing". In: Pennsylvania Commercial Vegetable Production Recommendations. pp. A8-A9. Penn State Cooperative Extension.

    LaBorde LF., 2002. "Biosecurity - Safeguarding our Food Supply from Intentional Contamination". Mushroom News. 50(3): 8-12.

    LaBorde LF., 2001. "FDA Announces Final Ruling On HACCP". Fruit Times Newsletter.Vol.20, No.2. February 9, 2001.

    LaBorde LF. 2001. "Sanitation: The Key to Producing Safe Mushroom Products". Mushroom News. 49(9):4-6.

    LaBorde LF. 2000. "Third-Party Audits - New Demands for Assurances of Food Safety". Mushroom News. 48(9):4-6. (Available online)

    LaBorde LF. 2000. "Proper Care and Handling of Fruits and Vegetables from Purchase to Preparation". (Tri-fold brochure (Available online)

    LaBorde LF. 2000. "What You Should Know about Sprouts". Penn State Cooperative Extension. (Tri-fold brochure (Available online)

    LaBorde LF. 1999. "Implementing a HAACP Based Food Safety Plan for the Fresh Mushroom Industry". Mushroom News. 47(9):4-7, 10-11. (Available online)

    LaBorde, LF. 1999. "Final Ruling On Juice HACCP Expected Next Year". Fruit Times Newsletter. Vol. 18, No. 19. December 7, 1999.


    Funding Sources

    2014. Giorgi Mushroom Company Fund for Mushroom Research/American Mushroom Institute. Validating the effectiveness of thermal sanitization treatments for eliminating Listeria monocytogenes from mushroom slicing equipment. LaBorde LF, Anantheswarn RC. $22,000.

    2012 -2013. USDA Specialty Block Grant Program/ PA Dept. of Agric. Microbial Food Safety Interventions to Prevent Surface Water Contamination of Pennsylvania Specialty Crops, LaBorde LF, Orzolek M. $24,403.

    2011-2013. Giorgi Mushroom Company Fund for Mushroom Research/American Mushroom Institute. Tracking Listeria monocytogenes throughout the mushroom production system and implementation of effective intervention strategies to prevent product contamination LaBorde LF, Knabel, SK. $94,135.

    2012-2013. USDA Specialty Crops Block Grants. Good Agricultural Practices Training and Support for Pennsylvania Fresh Produce Growers. LaBorde LF. $30,000.

    2011-2013. USDA Specialty Crops Block Grants. Expanding Cooperative Extension Farm Food Safety Training. LaBorde L, Sanchez E, Thomson J. $54,872.

    2009 -2012. USDA Specialty Crops Block Grants. Microbial Survey of Pennsylvania Surface Water used for Specialty Crop Irrigation and Development of Sampling and Handling Procedures for Surface Water Testing. LaBorde L, Doores S, Gourama H. Jayaro B. $87,441.

    2009-2011. Giorgi Mushroom Company Fund for Mushroom Research. Microbial Ecology of Casing Soils and Food Safety Interventions to Reduce Mushroom Contamination Risks. LaBorde LF, Chikthimmah N, Royse D. $75,684

    2009. USDA FAS. Food Safety Risk Assessment and Risk Management in Agricultural Production and Packaging Environments. Behring DM, Chikthimmah N, LaBorde LF. $25,224

    2009. USDA SARE. Preparing Small and Mid–Size Growers of Fruits and Vegetables for On-Farm Food Safety Certification. Thomson J, LaBorde LF. $162,119

    2003. USDA-CSREES - National Integrated Food Safety Initiative."Multiple Strategies for Control of Patulin in Apples and Apple Products: An Integrated Regional Research and Extension Project. L.F. LaBorde, H. Gourama, (Food Science), A. Demirci (Ag. and Biological Engineering), D. Rosenberger (Plant Pathology, Cornell University). $500,000.

    2003. USDA-CSREES - National Integrated Food. "Strengthening the National Good Agricultural Practices (GAPS) Program through Expanded Collaboration, Research, and Economic Modeling". R. Gravani, (Cornell University). PSU subcontract $15,000.

    2001. USDA-CSREES - National Integrated Food Safety Initiative. "Mushroom Food Safety: A Research & Extension Model for the Produce Industry". L.F. LaBorde (Food Science), R. Beelman (Food Science), J.L. Brown (Food Science), D.M. Beyer (Plant Pathology), L.J. Harris (Food Science, UC-Davis), T.V. Suslow (Vegetable Crops, UC-Davis). $200,000.

    2001. Pennsylvania Department of Agriculture. "Development of a Pennsylvania Apple Quality Assurance Program and Low-cost Technologies for Pasteurization of Apple Cider". L.F. LaBorde (Food Science), R. Beelman (Food Science), R. Crassweller (Horticulture). $116, 610.

    2001. Pennsylvania Department of Agriculture. "Development of Cultural and Postharvest Practices to Reduce Bacterial Populations on Fresh Mushrooms". R. Beelman (Food Science), L.F. LaBorde (Food Science), A. Demirci (Ag. and Biol. Engineering). $196,448.

    Professional Experience

    2004 - present. Associate Professor. Pennsylvania State University Department of Food Science. University Park, Pennsylvania

    1998 - 2004. Assistant Professor. Pennsylvania State University Department of Food Science. University Park, Pennsylvania

    1996 - 1998. Research Chemist. Canandaigua Wine Company, Madera, California. Basic and applied research directed towards the development of new products and processes from grape juice and grape by-products.

    1993 - 1996. Research Associate. Department of Food Science, University of Wisconsin-Madison, Madison, Wisconsin. Laboratory methods and process development aimed at improving the quality of processed vegetables.

    Background

    Education
    University of Wisconsin-Madison, Food Science, Ph.D. University of Wisconsin-Madison, Food Science, M.S. University of Wisconsin-Milwaukee, Botany, B.S.