Dr Zhi Hung Loh
Scientific Services Officer
School of Agriculture and Food Sustainability
Central Analytical Laboratory (CAL), John Mahon Building (Building 8105), Gatton
Dr Zhi Hung Loh is an organic chemist who has specialist knowledge and skills in analytical chemistry. He is skilled in both organic and inorganic chemical analyses. He supports various research projects within the School of Agriculture and Food Sustainability (AGFS), UQ and external research collaborators.
Dr Loh has experience in developing, validating and troubleshooting analytical methodologies. He is highly proficient in performing both qualitative and quantitative analyses using LC-MS, GC-MS, LECO and other instrumentation and has conducted analyses on various biological sample matrices including plants, rumen fluid, cattle blood, soil and food products.
Journal Articles
Loh, Zhi Hung, Hungerford, Natasha L., Ouwerkerk, Diane, Klieve, Athol V. and Fletcher, Mary T. (2025). Abiotic degradation of the toxin simplexin by soil collected from a Pimelea-infested paddock. Toxins, 17 (3) 124, 124. doi: 10.3390/toxins17030124
Hungerford, Natasha L., Ouwerkerk, Diane, Gilbert, Rosalind A., Loh, Zhi Hung, Gordon, Russell J., Silva, Luis F.P. and Fletcher, Mary T. (2024). A feeding trial to investigate strategies to mitigate the impacts of Pimelea poisoning in Australian cattle. Journal of Agricultural and Food Chemistry, 72 (28), 15572-15585. doi: 10.1021/acs.jafc.4c02082
Loh, Zhi Hung, Hungerford, Natasha L., Ouwerkerk, Diane, Klieve, Athol V. and Fletcher, Mary T. (2023). Identification of acid hydrolysis metabolites of the Pimelea toxin simplexin for targeted UPLC-MS/MS analysis. Toxins, 15 (9) 551, 551. doi: 10.3390/toxins15090551
Loh, Zhi Hung, Ouwerkerk, Diane, Klieve, Athol V., Hungerford, Natasha L. and Fletcher, Mary T. (2020). Toxin degradation by rumen microorganisms: a review. Toxins, 12 (10) 664, 1-37. doi: 10.3390/toxins12100664
Loh, Zhi Hung and Lim, Yau Yan (2018). Drying effects on antioxidant activity, enzyme activity, and phytochemicals of avocado (Persea americana) leaves. Journal of Food Processing and Preservation, 42 (10) e13667, e13667. doi: 10.1111/jfpp.13667
Loh, Zhi Hung, Oh, Hikari Kan Fu and Lim, Yau Yan (2018). Relationship between polyphenol oxidase activity and phenolics degradation on ambient air-drying of herbal plants. Journal of Food Processing and Preservation, 42 (7) e13672, e13672. doi: 10.1111/jfpp.13672
Conference Papers
Loh, Z. H., Hungerford, N. L., Ouwerkerk, D., Klieve, A. V. and Fletcher, M. T. (2022). Effects of adsorbents and probiotics in mitigating simplexin poisoning effects in cattle fed Pimelea. 34th Biennial Conference of the Australian Association of Animal Sciences, Cairns, QLD, Australia, 5 - 7 July 2022. Clayton, VIC, Australia: CSIRO Publishing.
Ouwerkerk, D., Gilbert, R. A., Gravel, J. L., Maguire, A. J., Minchin, C. M., Hungerford, N. L., Loh, Z. H. and Fletcher, M. T. (2021). Enriching for rumen bacteria to degrade the Pimelea plant toxin simplexin, in an anaerobic in vitro fermenter. Australian Association of Animal Sciences Biennial Conference (AAAS 2021), Fremantle, WA Australia, 1-3 February 2021. Australian Association of Animal Sciences and CSIRO. doi: 10.1071/ANv61n3abs
Loh, Zhi Hung, Hungerford, Natasha L., Ouwerkerk, Diane, Klieve, Athol V. and Fletcher, Mary T. (2021). Analysis of the Pimelea toxin simplexin for the development of a cattle microbial probiotic. 1st International Electronic Conference on Toxins, Online, 13-31 January 2021. Basel, Switzerland: Sciforum. doi: 10.3390/IECT2021-09149
Loh, Z. H., Hungerford, N. L., Ouwerkerk, D., Klieve, A. V. and Fletcher, M. T. (2021). Pimelea toxin simplexin and its potential degradation products. Australian Association of Animal Sciences Biennial Conference (AAAS 2021), Fremantle, WA Australia, 1-3 February 2021. Australian Association of Animal Sciences and CSIRO. doi: 10.1071/ANv61n3abs
Loh, Z. H., Hungerford, N. L., Ouwerkerk, D., Klieve, A. V. and Fletcher, M. T. (2020). Identification of volatile plant compounds in Pimelea trichostachya responsible for livestock aversion. 5th Queensland Annual Chemistry Symposium, QACS 2020, Brisbane, QLD, Australia, 27 November 2020.
Loh, Zhi Hung, Hungerford, Natasha L., Ouwerkerk, Diane, Gilbert, Rosalind A., Gravel, Jennifer, Minchin, Catherine M., Maguire, Anita J., Yong, Ken, Klieve, Athol and Fletcher, Mary (2019). Mitigating the effects of the toxin simplexin in pimelea poisoning of cattle by development of a microbial probiotic. TropAg2019, International Tropical Agriculture Conference, Brisbane, QLD, Australia, 11 - 13 November 2019.
Loh, Z. H., Hungerford, N. L., Ouwerkerk, D., Klieve, A. V. and Fletcher, M. T. (2019). Mitigating the effects of the toxin simplexin in pimelea poisoning of cattle by development of a microbial probiotic. 4th Queensland Annual Chemistry Symposium QACS 2019, Brisbane, QLD, Australia, 29 November 2019.
Loh, Zhi Hung, Hungerford, Natasha L., Ouwerkerk, Diane, Gilbert, Rosalind A., Klieve, Athol V. and Fletcher, Mary T. (2018). Towards a Microbial Probiotic: LC-MS/MS Analysis of Simulated Rumen Degradation of the Pimelea Toxin Simplexin. QMSS 2018 – 3rd Queensland Mass Spectrometry Symposium, QUT, Brisbane, Australia, 6-7 December 2018.
Loh, Zhi Hung, Oh, Hikari Kan Fu and Lim, Yau Yan (2017). Correlation between oxidases enzyme activity and total phenolic content. 17th Asian Chemical Congress, Melbourne, Australia, 23-28 July 2017.
Thesis
Loh, Zhi Hung (2022). Mitigating the effects of the toxin simplexin in Pimelea poisoning of cattle by development of a microbial probiotic. PhD Thesis, Queensland Alliance for Agriculture and Food Innovation, The University of Queensland. doi: 10.14264/5c2d14c