Josh Bostic
Project
DFG-DI 2136: "Disentangling de-novo synthesis,
recycling and transformation of n-alkyl lipids in soils by combining
position-specific 13C labeling with fragment-specific 13C analysis."
My
research focuses on lipids in soils, and how they are transformed and
recycled by microbial communities. By tracking the overall incorporation
and spatial orientation of carbon atoms from position-specifically
labeled metabolites (glucose and palmitate) into microbial lipid
fractions using novel isotope ratio mass spectrometric techniques, we
will qualitatively determine the extent of lipid transformation,
degradation, and recycling in microbial metabolism. This knowledge will
advance our understanding of how lipids contribute to the global carbon
cycle and improve the interpretation of lipid biomarkers for plant and
microbial diversity.
CV
2013-2015: Research Technician, Department of Geology and Geophysics, University of Hawaii at Manoa
2012-2015: M.S. in Human Nutrition, Foods and Exercise, Virginia Tech
2009-2012: B.S. in Human Nutrition, Foods and Exercise, Virginia Tech
Publications
J.N. Bostic,
S.J. Palafox, M.E. Rottmueller and A.H. Jahren. 2015. Effect of baking
and fermentation on the stable carbon and nitrogen isotope ratios of
grain-based food. Rapid Communications in Mass Spectrometry, 29(10):
937-947.
V.E. Hedrick, J.M. Zoeller, A.H. Jahren, J.N. Bostic
and B.M. Davy. 2015. A dual-carbon-and-nitrogen stable isotope ratio
model is not superior to a single-carbon stable isotope ratio model for
predicting added sugar intake in Southwest Virginian adults. The Journal
of Nutrition, 145(6): 1362-1369.
A.H. Jahren, J.N. Bostic
and B.A. Davy. 2014 (Invited Review). The potential for a carbon stable
isotope biomarker of dietary sugar intake. Journal of Analytical Atomic
Spectrometry, 29(5): 795-816.