Quantitative 1H-NMR assay from sputum samples for a rapid detection of pyrazinamide resistance in Mycobacterium tuberculosis
Lopez, J. M., Zimic, M.,  Vallejos, K., Sevilla, D.,  Quispe-Carbajal, M., Roncal, E., Rodríguez, J.,  Rodríguez, J., Antiparra, R.,  Arteaga, H.,  Gilman, R., Maruenda, H., Sheen, P. JCM (accepted). Pyrazinamide (PZA),...
Año de publicación: 2023
Urine 1H-NMR metabolomics to discriminate neurocysticercosis patients from healthy controls. An exploratory study.
Lopez, J. M., . Leyva, V. E.,   Bustos, J.A., Perez, E., Sanchez, S.,  Saavedra, H., Gonzalez, I., Maruenda,H.,  Garcia. H.H. Am. J. Trop. Med. Hyg. 107,1, pp. 143–145. 1H-NMR spectroscopy combined...
Año de publicación: 2022
Measuring the 3J HNHa coupling by a Simple 2D-intra-HNCA IP/AP-E.COSY with simultaneous encoding of 15N chemical shift and 1J HaCa evolution.
Lopez, J. M. & Maruenda, H Journal of Magnetic Resonance, 335, 107111.  The novel intra HNCA IP/AP E.COSY pulse sequence implemented allowed to measure 3J HNHa coupling constants by a...
Año de publicación: 2022
Pure Shift Nuclear Magnetic Resonance: a New Tool for Plant Metabolomics
Lopez, J. M., Leyva, V., Maruenda, H. J. Vis. Exp. (173), e62719. https://doi:10.3791/62719 The step-by-step procedure, which includes the plant extract preparation and the optimal recording of the Pure Shift PSYCHE...
Año de publicación: 2021
Assessment of the presence of lipophilic phycotoxins in scallops (Argopecten purpuratus) farmed along Peruvian coastal wate
Leyva, V, and Maruenda, H.  Journal of Food Protection, 84, 2, 204-212. The paper describes the LC-MS/MS quantification method implemented to monitor four lipophilic biotoxins, namely, okadaic acid (OA), yessotoxin...
Año de publicación: 2021
NMR-based leaf metabolic profiling of V. planifolia and three endemic Vanilla species from the Peruvian Amazon
Leyva, V.E.; Lopez, J.M.; Zevallos-Ventura, A.; Cabrera, R.; Cañari-Chumpitaz, C.; Toubiana, D.; Maruenda, H. Food Chemistry, 358, 129365 The paper describes a nuclear magnetic resonance based metabolomic platform developed to profile...
Año de publicación: 2021
Guidelines for correlation coefficient threshold settings in metabolite correlation networks exemplified on a potato association panel.
Toubiana, D.; Maruenda, H.  BMC BioInfromatics Journal 22,116:1-14. Correlation-based network analysis has become an integral part to study the coordinated behavior of metabolites in plant mapping populations or collections of...
Año de publicación: 2021
Study of the acetylation pattern of Chitosan by pure shift NMR
Lopez, J.M., Sanchez, L., Nakamatsu, J., Maruenda, H. Analytical Chemistry., 92, 18, 12250–12256. Modern homonuclear decoupling methods were applied for an easy and unequivocal determination of the acetylation pattern of...
Año de publicación: 2020
Morphological and metabolic profiling of a tropical-adapted potato association panel subjected to water recovery treatment reveals new insights into plant vigor
Toubiana, T.,  Cabrera, R.,  Salas, E., Maccera, Ch., Franco dos Santos, G., Cevallos, D.,  Lindqvist-Kreuze, H., Boeck, B.,  Lopez, J.M., Maruenda, H.  Plant J. 2020; 10.1111 /tpj.14892. doi:10.1111/tpj.14892. By applying advanced...
Año de publicación: 2020
Ultra-Clean Pure Shift 1H-NMR applied to metabolomics profiling.
Lopez JM, Cabrera R, Maruenda H. Scientific reports 9.1: 6900.  
Año de publicación: 2019