Dr Patrick Janssen staff profile picture

Contact details +64 (06) 356 9099  ext. 83225

Dr Patrick Janssen

Senior Lecturer in Food Science

School of Food and Advanced Technology

Research Projects

Summary of Research Projects

Position Current Completed
Project Leader 0 6

Research Outputs

Journal

Sofian-Seng, NS., Golding, M., Goh, K., Janssen, P., & Lee, SJ. (2017). In Situ Enzymatic Synthesis of Polar Lipid Emulsifiers in the Preparation and Stabilisation of Aerated Food Emulsions. Food Biophysics. 12(3), 323-338
[Journal article]Authored by: Goh, K., Golding, M., Janssen, P., Lee, S.
Reynolds, GW., Lentle, RG., Janssen, PWM., & Hulls, CM. (2017). Continuous wavelet analysis of postprandial EGGs suggests sustained gastric slow waves may be slow to develop in infants with colic. Neurogastroenterology and Motility. 29(3)
[Journal article]Authored by: Hulls, C., Janssen, P., Lentle, R.
Hulls, C., Lentle, RG., Reynolds, GW., Janssen, PWM., Chambers, P., & de Loubens, C. (2016). Ex vivo motility in the base of the rabbit caecum and its associated structures: an electrophysiological and spatiotemporal analysis. Journal of Physiology and Biochemistry. 72(1), 45-57
[Journal article]Authored by: Chambers, J., Hulls, C., Janssen, P., Lentle, R.
Sharma, P., Dessev, TT., Munro, PA., Wiles, PG., Gillies, G., Golding, MD., . . . Janssen, PW. (2015). Measurement techniques for steady shear viscosity of Mozzarella-type cheeses at high shear rates and high temperature. International Dairy Journal. 47, 102-108
[Journal article]Authored by: Golding, M., Janssen, P.
Lim, YF., De Loubens, C., Love, RJ., Lentle, RG., & Janssen, PWM. (2015). Flow and mixing by small intestine villi. Food and Function. 6(6), 1787-1795
[Journal article]Authored by: Janssen, P., Lentle, R., Love, R.
Lentle, RG., Reynolds, GW., Janssen, PWM., Hulls, CM., King, QM., & Chambers, JP. (2015). Characterisation of the contractile dynamics of the resting ex vivo urinary bladder of the pig. BJU International. 116(6), 973-983
[Journal article]Authored by: Chambers, J., Hulls, C., Janssen, P., Lentle, R.
Janssen, PWM., Lentle, RG., Chambers, P., Reynolds, GW., De Loubens, C., & Hulls, CM. (2014). Spatiotemporal organization of standing postprandial contractions in the distal ileum of the anesthetized pig. Neurogastroenterology and Motility. 26(11), 1651-1662
[Journal article]Authored by: Chambers, J., Hulls, C., Janssen, P., Lentle, R.
Lim, YF., Lentle, RG., Janssen, PWM., Williams, MAK., De Loubens, C., Mansel, BW., . . . Chambers, P. (2014). Determination of villous rigidity in the distal ileum of the possum (Trichosurus vulpecula). PLoS ONE. 9(6)
[Journal article]Authored by: Chambers, J., Janssen, P., Lentle, R., Williams, M.
De Loubens, C., Lentle, RG., Hulls, C., Janssen, PWM., Love, RJ., & Chambers, JP. (2014). Characterisation of mixing in the proximal duodenum of the rat during longitudinal contractions and comparison with a fluid mechanical model based on spatiotemporal motility data. PLoS ONE. 9(4)
[Journal article]Authored by: Chambers, J., Hulls, C., Janssen, P., Lentle, R., Love, R.
Hardacre, AK., Yap, SY., Lentle, RG., Janssen, PWM., & Monro, JA. (2014). The partitioning of water in aggregates of undigested and digested dietary particles. Food Chemistry. 142, 446-454
[Journal article]Authored by: Janssen, P., Lentle, R.
Lentle, RG., Janssen, PWM., Deloubens, C., Lim, YF., Hulls, C., & Chambers, P. (2013). Mucosal microfolds augment mixing at the wall of the distal ileum of the brushtail possum. Neurogastroenterology and Motility. 25(11)
[Journal article]Authored by: Chambers, J., Hulls, C., Janssen, P., Lentle, R.
Lentle, RG., Reynolds, GW., & Janssen, PWM. (2013). Gastrointestinal tone; its genesis and contribution to the physical processes of digestion. Neurogastroenterology and Motility. 25(12), 931-942
[Journal article]Authored by: Janssen, P., Lentle, R.
Lentle, RG., Janssen, PWM., Deloubens, C., Lim, YF., Hulls, C., & Chambers, P. (2013). Mucosal microfolds augment mixing at the wall of the distal ileum of the brushtail possum. Neurogastroenterology and Motility.
[Journal article]Authored by: Chambers, J., Janssen, P., Lentle, R.
Angeli, TR., Du, P., Paskaranandavadivel, N., Janssen, PW., Beyder, A., Lentle, RG., . . . O'Grady, G. (2013). The bioelectrical basis and validity of gastrointestinal extracellular slow wave recordings. Journal of Physiology.
[Journal article]Authored by: Janssen, P., Lentle, R.
Loubens, CDE., Lentle, RG., Love, RJ., Hulls, C., & Janssen, PWM. (2013). Fluid mechanical consequences of pendular activity, segmentation and pyloric outflow in the proximal duodenum of the rat and the guinea pig. Journal of the Royal Society Interface. 10(83)
[Journal article]Authored by: Hulls, C., Janssen, P., Lentle, R., Love, R.
Lim, YF., Williams, MAK., Lentle, RG., Janssen, PWM., Mansel, BW., Keen, SAJ., . . . Chambers, P. (2013). An exploration of the microrheological environment around the distal ileal villi and proximal colonic mucosa of the possum (Trichosurus vulpecula). Journal of the Royal Society Interface. 10(81)
[Journal article]Authored by: Chambers, J., Janssen, P., Keen, S., Lentle, R., Williams, M.
Lentle, RG., Reynolds, G., De Loubens, C., Hulls, C., Janssen, PWM., & Ravindran, V. (2013). Spatiotemporal mapping of the muscular activity of the gizzard of the chicken (Gallus domesticus). Poultry Science. 92(2), 483-491
[Journal article]Authored by: Hulls, C., Janssen, P., Lentle, R., Ravindran, V.
Lentle, RG., De Loubens, C., Hulls, C., Janssen, PWM., Golding, MD., & Chambers, JP. (2012). A comparison of the organization of longitudinal and circular contractions during pendular and segmental activity in the duodenum of the rat and guinea pig. Neurogastroenterology and Motility.
[Journal article]Authored by: Chambers, J., Golding, M., Hulls, C., Janssen, P., Lentle, R.
Hulls, C., Lentle, RG., de Loubens, C., Janssen, PWM., Chambers, P., & Stafford, KJ. (2012). Spatiotemporal mapping of ex vivo motility in the caecum of the rabbit. Journal of Comparative Physiology B: Biochemical, Systemic, and Environmental Physiology. 182(2), 287-297
[Journal article]Authored by: Chambers, J., Hulls, C., Janssen, P., Lentle, R., Stafford, K.
Lentle, RG., & Janssen, PWM. (2010). Manipulating digestion with foods designed to change the physical characteristics of digesta. Critical Reviews in Food Science and Nutrition. 50(2), 130-145
[Journal article]Authored by: Janssen, P., Lentle, R.
Lentle, RG., Janssen, PWM., Goh, K., Chambers, P., & Hulls, C. (2010). Quantification of the effects of the volume and viscosity of gastric contents on antral and fundic activity in the rat stomach maintained ex vivo. Digestive Diseases and Sciences. 55(12), 3349-3360
[Journal article]Authored by: Chambers, J., Goh, K., Hulls, C., Janssen, P., Lentle, R.
Lentle, RG., Janssen, PWM., & Hume, ID. (2009). The roles of filtration and expression in the processing of digesta with high solid phase content. Comparative Biochemistry and Physiology - A Molecular and Integrative Physiology. 154(1), 1-9
[Journal article]Authored by: Janssen, P., Lentle, R.
Janssen, PWM., Lentle, RG., Hulls, C., Ravindran, V., & Amerah, AM. (2009). Spatiotemporal mapping of the motility of the isolated chicken caecum. Journal of Comparative Physiology B: Biochemical, Systemic, and Environmental Physiology. 179(5), 593-604
[Journal article]Authored by: Hulls, C., Janssen, P., Lentle, R., Ravindran, V.
Lentle, RG., & Janssen, PWM. (2008). Physical characteristics of digesta and their influence on flow and mixing in the mammalian intestine: A review. Journal of Comparative Physiology B: Biochemical, Systemic, and Environmental Physiology. 178(6), 673-690
[Journal article]Authored by: Janssen, P., Lentle, R.
Lentle, RG., Janssen, PWM., Asvarujanon, P., Chambers, P., Stafford, KJ., & Hemar, Y. (2008). High-definition spatiotemporal mapping of contractile activity in the isolated proximal colon of the rabbit. Journal of Comparative Physiology B: Biochemical, Systemic, and Environmental Physiology. 178(3), 257-268
[Journal article]Authored by: Chambers, J., Janssen, P., Lentle, R., Stafford, K.
Janssen, PWM., & MacGibbon, AKH. (2007). Non-isothermal crystallization of bovine milk fat. JAOCS, Journal of the American Oil Chemists' Society. 84(9), 871-875
[Journal article]Authored by: Janssen, P.
Janssen, PWM., Lentle, RG., Asvarujanon, P., Chambers, P., Stafford, KJ., & Hemar, Y. (2007). Characterization of flow and mixing regimes within the ileum of the brushtail possum using residence time distribution analysis with simultaneous spatio-temporal mapping. Journal of Physiology. 582(3), 1239-1248
[Journal article]Authored by: Chambers, J., Janssen, P., Lentle, R., Stafford, K.
Lentle, RG., Janssen, PWM., Asvarujanon, P., Chambers, P., Stafford, KJ., & Hemar, Y. (2007). High definition mapping of circular and longitudinal motility in the terminal ileum of the brushtail possum Trichosurus vulpecula with watery and viscous perfusates. Journal of Comparative Physiology B: Biochemical, Systemic, and Environmental Physiology. 177(5), 543-556
[Journal article]Authored by: Chambers, J., Janssen, P., Lentle, R., Stafford, K.
Janssen, PW. (2004). Modelling fat microstructure using finite element analysis. Journal of Food Engineering. 61(3), 387-392 Retrieved from http://www.sciencedirect.com/science/article/pii/S0260877403001456
[Journal article]Authored by: Janssen, P.

Book

Janssen, PWM., & Lentle, RG. (2013). Spatiotemporal mapping techniques for quantifying gut motility. In Lecture Notes in Computational Vision and Biomechanics. (pp. 219 - 241).
[Chapter]Authored by: Janssen, P., Lentle, R.
Lentle, RG., & Janssen, PWM.(2011). The physical processes of digestion. : Springer Verlag
[Authored Book]Authored by: Janssen, P., Lentle, R.

IP

Illingworth, D., Janssen, PW., Cant, PAE., & Stephens, GR.(2009). . WO/2009/011598: Dairy product and process
[Patent]Authored by: Janssen, P.

Conference

Sofian-Seng, NS., Golding, M., Goh, KKT., Lee, SJ., & Janssen, P. (2014, March). Potential production of polar lipid in O/W emulsion through lipolysis by Rhizomucor miehei lipase. Presented at Food Structure and Functionality Forum Symposium from Molecules to Functionality. Amsterdam, The Netherlands.
[Conference Oral Presentation]Authored by: Goh, K., Golding, M., Janssen, P., Lee, S.

Supervision and Teaching

Summary of Doctoral Supervision

Position Current Completed
Co-supervisor 1 3

Courses Coordinated

Current Doctoral Supervision

Co-supervisor of:

  • Arup Nag - Doctor of Philosophy
    Studies on the stability of probiotic bacteria during long term storage

Completed Doctoral Supervision

Co-supervisor of:

  • 2016 - Noor Soffalina Sofian Seng - Doctor of Philosophy
    Preparation, characterisation and application of naturally derived polar lipids through lipolysis
  • 2015 - Yuen Lim - Doctor of Philosophy
    Factors influencing mixing and mass transfer in the small intestine
  • 2012 - Hilary McKinnon - Doctor of Philosophy
    Effects of selected goats milk products on bone turnover and gut function in osteoporosis prevention research

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