In order to understand what phytochemicals are doing within a system, robust and quantitative methods are required for their analysis. We focus on developing liquid chromatography and mass spectrometry based methods to allow analysis of phytochemicals and their metabolites, often present at picomolar concentrations.
Here is some work we’ve published on the topic:
- Dzakovich MP, Hartman JL, Cooperstone JL. A high-throughput extraction and analysis method for steroidal glycoalkaloids in tomato. Front Plant Sci, 2020;11:767.
- Dzakovich MP, Gas-Pascual E, Orchard CJ, Sari EN, Riedl KM, Schwartz SJ, Francis DM, Cooperstone JL. Analysis of tomato carotenoids: comparison extraction and chromatographic methods. J AOAC Int. 2019;102(4):1069-1079.
- Cooperstone JL, Novotny JA, Riedl KM, Cichon MJ, Francis DM, Curley Jr. RW, Schwartz SJ, Harrison EH. Limited appearance of apocarotenoids is observed in plasma after consumption of tomato juices, a randomized human clinical trial. Am J Clin Nutr. 2018;108:1-8.
- Cooperstone JL, Tober KA, Riedl KM, Teegarden MDg, Cichon MJ, Francis DM, Schwartz SJ, Oberyszyn TA. Tomatoes protect against development of UV-induced keratinocyte carcinoma via metabolomic alterations. Sci Reports, 2017;5:5106.
- Teegarden MD, Harper AR, Cooperstone JL, Tober KA, Schwartz SJ, Oberyszyn TA. 25-Hydroxyvitamin D3 and it’s C-3 epimer are elevated in the skin and serum of Skh-1 mice supplemented with dietary vitamin D3. Mol Nutr Food Res, 2017;61:1700293.
- Goetz HJ, Kopec RE, Riedl KM, Cooperstone JL, Narayanasamy S, Curley Jr., RW, Schwartz SJ. An HPLC-MS/MS method for the separation of α-retinyl esters from retinyl esters. J Chrom B, 2016;1029:68-71.
If you have trouble accessing any work, send Jess an email and she’d be happy to share the paper and its relevant data with you.