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ARS Home Southeast Area Gainesville, Florida Center for Medical, Agricultural and Veterinary Entomology Chemistry Research People





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- Hans Alborn
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John J Beck    Research Leader **John Beck** is a research chemist with a B.Sc. (chemistry) from the University of California, Riverside and a Ph.D. (organic/natural products chemistry) from Colorado State University. Professional memberships include the Entomological Society of America (ESA) Plant-Insect Ecosystems section, the International Society of Chemical Ecology (ISCE), and the American Chemical Society Agrochemical Division (ACS AGRO). Prior to joining the ARS as a career employee in 2006, John was an Associate Professor of Chemistry. While his formal training was in organic chemistry and the isolation, characterization, and bioassay of natural products from terrestrial sources, his research now focuses on plant-, insect-, and microbial-emitted volatiles and their role as semiochemicals. His research has included discovering host plant-based attractants for the California insect pest, navel orangewormutilizing electrophysiological (electroantennographic) and behavioral responses to select compounds or blends. As part of the USDA-ARS mission and the goals of his laboratory, John maintains collaborative research with other USDA agencies, external industry stakeholders, and academia, including the ARS Fruit and Tree Nut Research Unit it Byron, GA, University of Florida Entomology and Nematology Department, University of California Davis Department of Entomology and Nematology (Vannette laboratory), and the International Centre of Insect Physiology and Ecology (*icipe*). Professional service includes serving as an Associate Editor for Pest Management Science, Phytochemistry, and Environmental Entomology (EE), and member of the Editorial Boards for Journal of Food and Agricultural Chemistry (JAFC) and Phytochemistry Letters (PCL). **Publications and Patents:****2024**

Broadhead, G.T.; Cottrell, T.E.; Beck, J.J. Leaffooted bugs: insect pest species of growing concern for agriculture. J. Agric. Food Chem. 72: 2467-2472. 2024. [Link]

Yactayo-Chang, J.P.; Broadhead, G.T.; Housler, R.J.; Resende, M.F.R.; Verma, K.; Louis, J.; Basset, G.J.; Beck, J.J.; Block, A.B. Maize terpene synthase 1 impacts insect pest behavior via the production of monoterpene volatiles b-myrcene and linalool. Phytochemistry 218: 113957. 2024. [Link]**2022 - 2023**

Rering, C.C.; Quadrel, A.; Urbaneja-Bernat, P.; Beck, J.J.; Ben-Zvi, Y.; Khodadadi, F.; Acimovic, S.G.; Rodriquez-Saona, C.R. Blueberries infected with the fungal pathogen Colletotrichum fioriniae release odors that repel Drosophila suzukii. Pest Manag. Sci. 79: 4906-4920. 2023. [Link]

Cheseto, X.; Kirwa, H.; Mohamed, S.A.; Ekesi, S.; Beck, J.J.; Torto, B. Field evaluation of synthetic host marking pheromones for control of fruit flies in a mango orchard, Kenya. Pest Manag. Sci. 79: 1585-1592. 2023. [Link]

Schaeffer, R.N.; Crowder, D.W.; Illan, J.G.; Beck, J.J.; Fukami, T.; Williams, N.M.; Vannette, R.L. Disease management during bloom affects the floral microbiome but not pollination in a mass-flowering crop. J. Appl. Ecol. 60: 64-76. 2023. [Link]
Cheseto, X.; Rering, C.C.; Broadhead, G.T.; Torto, B.; Beck, J.J. Early infestation volatile biomarkers of fruit fly Bactrocera dorsalis (Hendel) ovipositional activity in mango (Mangifera indica L.). Phytochemistry 206: 113519. 2023. [Link]

Kihika-Opanda, R.; Tchouassi, D.P.; Ng’ang’a M.M.; Beck, J.J.; Torto, B. Chemo-ecological insights into the use of the non-host plant vegetable black-jack to protect two susceptible Solanaceous crops from root-knot nematode parasitism. J. Agric. Food Chem. 70: 6658-6669. 2022. [Link]**2021**

Mwamba, S.; Kihika-Opanda, R.; Murungi, L.K.; Losenge, T.; Beck, J.J.; Torto, B. Identification of repellents from four non-host Asteraceae plants for the root knot nematode, Meloidogyne incognita. J. Agric. Food Chem. 69: 15145-15156. 2021. [Link]

Alborn, H.T.; Bruton, R.G.; Beck, J.J. Sampling of volatiles in closed systems: a controlled comparison of three solventless volatile collection methods. J. Chem. Ecol. 47: 930-940. 2021.  [Link]

Yactayo-Chang, J.P.; Mendoza, J.; Willms, S.D.; Rering, C.C.; Beck, J.J.; Block, A.K. Zea mays volatiles that influence oviposition and feeding behaviors of Spodoptera frugiperda. J. Chem. Ecol. 47: 799-809. 2021.  [Link]

Rering, C.C.; Rudolph, A.B.; Beck, J.J. Pollen and yeast change nectar aroma and nutritional content alone and together, but honey bee foraging reflects only the avoidance of yeast. Environ. Microbiol. 23: 4141-4150. 2021.  [Link]

Schiestl, F.P.; Wallin, E.A.; Beck, J.J.; Friberg, M.; Thompson, J.N. Generalized olfactory detection of floral volatiles in the highly specialized Greya-Lithophragma nursery pollination system. Arthropod Plant Interact. 15: 209-221. 2021. [Link]

Crowley-Gall, A.; Rering, C.C.; Rudolph, A.B.; Vannette, R.L.; Beck, J.J. Volatile microbial semiochemicals and insect perception at flowers. Curr. Opin. Insect Sci. 44: 23-34. 2021.[Link]**2020**

Rering, C.C.; Gaffke, A.M.; Rudolph, A.B.; Beck, J.J.; Alborn, H.T. A comparison of collection methods for microbial volatiles. Front. Sustain. Food Syst. 4: 598967. 2020.  [Link]
Kihika, R.M.; Tchouassi, D.P.; Ng'ang'a, M.M.; Hall, D.; Beck, J.J.; Torto, B. Compounds associated with infection by the root-knot nematode, Meloidogyne javanica, influence the ability of infective juveniles to recognize host plants. J. Agric. Food Chem. 68: 9100-9109. 2020. [Link]
Rering, C.C.; Vannette, R.L.; Schaeffer, R.N.; Beck, J.J. Microbial co-occurrence in floral nectar affects metabolites and attractiveness to a generalist pollinator. J. Chem. Ecol. 46: 659-667. 2020. [Link]
Burks, C.S.; Higbee, B.S.; Beck, J.J. Traps and attractants for monitoring navel orangeworm (Lepidoptera: Pyralidae) in the presence of mating disruption. J. Econ. Entomol. 113: 1270-1278. 2020. [Link]**2019**

Molyneux, R.J.; Beck, J.J.; Colegate, S.C.; Edgar, J.; Gaffield B.; Gilbert, J.; Hofmann, T.; McConnell, L.; Schieberle, P. Guidelines for unequivocal structural identification of compounds with biological activity of significance in food chemistry. Pure Appl. Chem. 91: 1417-1437. 2019. [Link]
Schaeffer, R.N.; Rering, C.C.; Maalouf, I.; Beck, J.J.; Vannette, R.L. Microbial metabolites mediate bumble bee attraction and feeding. Biol. Lett. 15: e20190132. 2019. [Link]
Burge, D.O.; Beck, J.J. Dispersal of spicebush (Calycanthus occidentalis: Calycanthaceae) achenes by carnivorous wasps of the genus Vespula (Hymenoptera: Vespidae). Madroño. 66: 41-46. 2019. [Link}Beck, J.J.; Burge, D.O.; Willms, S.D.; Baig, N. Volatile profile of Calycanthus occidentalis achenes and evidence for a diverse range of semiochemicals for vespicochory by pestiferous Vespula pensylvanica. Trends Entomol. 15: 15-22. 2019. [Link]**2018**
Burks, C.S.; Higbee, B.S.; Beck, J.J. Comparison of monitoring techniques in and near almonds and pistachios under mating disruption treatment for navel orangeworm. Acta Hortic. 1219: 331-338. 2018 [Link]
Kirwa, H.K.; Murungi, L.K.; Beck, J.J.; Torto, B. Flavonoids, alkaloids, and a cytokinin identified in tomato root exudate elicit differential responses from the root knot nematode Meloidogyne incognita. J. Agric. Food Chem. 66: 11291-11300. 2018. [Link]
Rering, C.C.; Beck, J.J.; Hall, G.W.; McCartney, M.; Vannette, R.L. Nectar-inhabiting microorganisms influence nectar volatile composition and attractiveness to a generalist pollinator. Special Issue, New Phytol. 220: 750-759. 2018. [Link]
Cheseto, X.; Kachigamba, D.L.; Bendera, M.; Ekesi, S.; Ndung'u, M.; Beck, J.J.; Torto, B. Identification of glutamic acid as a host marking pheromone of the African fruit fly species Ceratitis rosa (Diptera: Tephritidae). J. Agric. Food Chem. 66: 9933-9941. 2018. [Link]Beck, J.J.; Gee, W.S.; Cheng, L.W.; Higbee, B.S.; Wilson, H.; Daane, K.M. Chapter 11, Investigating host plant-based semiochemicals for attracting the leaffooted bug (Hemiptera: Coreidae), an insect pest of California agriculture. In Roles of Natural Products for Biorational Pesticides in Agriculture. ACS Symposium Series, Vol. 1294, Beck, J.J.; Rering, C.C.; Duke, S.O. (eds). American Chemical Society, Washington, D.C., pp. 143-165. 2018. [Link]
Rering, C.C.; Beck, J.J.; Vannette, R.L.; Willms, S.D. Chapter 10, Quantitative assessment of nectar microbe-produced volatiles. In Roles of Natural Products for Biorational Pesticides in Agriculture. ACS Symposium Series, Vol. 1294, Beck, J.J.; Rering, C.C.; Duke, S.O. (eds). American Chemical Society, Washington, D.C., pp. 127-142. 2018. [Link]Beck, J.J.; Duke, S.O.; Rering, C.C. Editorial Introductory Chapter, Roles of natural products for biorational pesticides in agriculture. In Roles of Natural Products for Biorational Pesticides in Agriculture. ACS Symposium Series, Vol. 1294, Beck, J.J.; Rering, C.C.; Duke, S.O. (eds). American Chemical Society, Washington, D.C., pp. 1-4. 2018. [Link]

Njuguna, P.K.; Murungi, L.K.; Fombong, A.; Teal, P.E.A.; Beck, J.J.; Torto, B. Cucumber and tomato volatiles: influence on attraction in the melon fly Zeugodacus curcubitae (Diptera: Tephritidae). J. Agric. Food Chem. 2018. DOI: 10.1021/acs.jafc.8b03452. [Link] 
Murungi, L.; Kirwa, H.; Coyne, D.; Teal, P.E.A.; Beck, J.J.; Torto, B. Identification of key root volatiles signaling preference of tomato over spinach by the root know nematode Meloidogyne incognita. J. Agric. Food Chem. 66: 7328-7336. 2018. [Link]Beck, J.J.; Alborn, H.T.; Block A.K.; Christensen, S.A.; Hunter, C.T.; Rering, C.C.; Seidl-Adams, I.; Stuhl, C.J.; Torto, B.; Tumlinson, J.H. Interactions among plants, insects, and microbes: elucidation of inter-organismal chemical communications in agricultural ecology. J. Agric. Food Chem. 66: 6663-6674. 2018. [Link]
Willett, D.S.; Rering, C.C.; Ardura, D.A.; Beck, J.J.; Chapter 8, Application of mathematical models and computation in plant metabolomics. In Computational Phytochemistry. Sarker, S.D.; Nahar, L. (eds). Elsevier, Amsterdam, Netherlands. pp. 231-254. 2018. DOI: 10.1016/b978-0-12-812364.  [Link]**2017**
Cheseto, X.; Kachigamba, D.L.; Ekesi, S.; Ndung'u, M.; Teal, P.E.A.; Beck, J.J.; Torto, B. Identification of the ubiquitous antioxidant tripeptide glutathione as a fruity fly semiochemical. J. Agric. Food Chem. 65: 8560-8568. 2017.  [Link]Beck, J.J.; Torto, B.; Vannette, R.L. Eavesdropping on plant-insect-microbe chemical communications in agricultural ecology: a virtual issue on semiochemicals. J. Agric. Food Chem. 65: 5101-5103. 2017. [Link]Beck, J.J.; Higbee, B.S. Volatile blends and the effects thereof on the navel orangeworm moth. U.S. Patent Application S/N 14/858,654. Patent No. 9,655,366. Issued 05/23/2017. Beck, J.J.; Willett, S.W.; Mahoney, N.E.; Gee, W.S. Silo-stored pistachios at varying humidity levels produce distinct volatile biomarkers. J. Agric. Food Chem. 65: 551-556. 2017. [PDF Reprint]Beck, J.J.; Vannette, R.L. Harnessing insect-microbe chemical communications to control insect pests of agricultural systems. J. Agric. Food Chem. 65: 23-28. 2017. ACS Editor's Choice. [Link]**2016**Beck, J.J.; Willett, S.W.; Gee, W.S.; Mahoney, N.E.; Higbee, B.S. Differentiation of volatile profiles from stockpiled almonds at varying relative humidity levels using benchtop and portable GC-MS. J. Agric. Food Chem. 64: 9286-9292. 2016. [PDF Reprint]Beck, J.J.; Mahoney, N.E. Detection of aflatoxins and aflatoxic aspergilli in natural fungal bouquets. U.S. Patent Application S/N 12/895,748. Patent No. US 9,512,461. Issued 12/06/2016.**2015****Beck, J.J.**; Higbee, B.S. Chapter 9, Plant- or fungal-produced conophthorin as an important component of host plant volatile-based attractants for agricultural lepidopteran insect pests. In Discovery and Synthesis of Crop Protection Products, ACS Symposium Series. Maienfisch, P.; Stevenson, T.M. (eds). American Chemical Society, Washington, D.C. Vol 1204, pp. 111-127. 2015. [Link]Beck, J.J.; Higbee, B.S. Volatile blends and the effects thereof on the navel orangeworm moth. U.S. Provisional Applications S/N 61/420,163; S/N 61/560,212; U.S. Utility Patent Application S/N 13/312,981. Patent No. 9,220,261. Issued 12/29/2015.**Beck, J.J.**; Porter, N.; Cook, D.; Gee, W.S.; Griffith, C.M.; Rands, A.D.; Truong, T.V.; Smith, L.; San Román, I. In-field volatile analysis employing a hand-held portable GC-MS: emission profiles differentiate damaged and undamaged yellow starthistle flower heads. Phytochem. Anal. 26: 395-403. 2015. [PDF reprint]
Oster, M.; **Beck, J.J.**; Furrow, R.E.; Yeung, K.; Field, C.B. In-field yellow starthistle (Centaurea solstitialis) volatile composition under elevated temperature and CO2 and implications for future control. Chemoecology. 25: 313-323. 2015. [PDF reprint]
Smith, L.; **Beck, J.J.** Duration of emission of volatile organic compounds from mechanically damaged plant leaves. J. Plant Physiol. 188: 19-28. 2015. [PDF reprint]Beck, J.J.; Merrill, G.B. Palumbo, J.D.; O'Keeffe, T.L. Biosynthesis of styrene and 7-methyl-1,3,5-cyclooctatriene. U.S. Patent Application S/N 12/265,264. Patent No. 9,057,080. Issued 06/16/2015.
San Román, I.; Bartolomé, L.; Gee, W.S.; Alonso, R.M.; **Beck, J.J.** Comparison of ex situ volatile emissions from intact and mechanically damaged walnuts. Food Res. Inter. 72: 198-207. 2015. [PDF reprint]**2014****Beck, J.J.**; Baig, N.; Cook, D.; Mahoney, N.E.; Marsico, T.D. Semiochemicals from ex situ abiotically stressed cactus tissue: a contributing role of fungal spores? J. Agric. Food Chem. 62: 12273-12276. 2014. [PDF reprint]**Beck, J.J.**; Light, D.M.; Gee, W.S. Electrophysiological responses of male and female Amyelois transitella antennae to pistachio and almond host plant volatiles. Entomol. Exp. Appl. 153: 173-210. 2014. [PDF reprint]**Beck, J.J.**; Mahoney, N.E.; Higbee, B.S.; Gee, W.S.; Baig, N.; Griffith, C.M. Chapter 14, Semiochemicals to monitor insect pests - future opportunities for an effective host plant volatile blend to attract navel orangeworm in pistachio orchards. In Biopesticides: State of the Art and Future Opportunities, ACS Symposium Series. Gross, A.D.; Seiber, J.N.; Coats, J.R.; Duke, S.O. (eds). American Chemical Society, Washington, D.C. Vol 1172, pp. 191-210. 2014. [Link]
Oster, M.; Smith, L.; **Beck, J.J.**; Howard, A.; Field, C.B. Orientation behavior of predaceous ground beetle species in response to volatile emissions identified from yellow starthistle damaged by an invasive slug. Arthropod-Plant Inte. 8: 429-437. 2014. [PDF reprint]**Beck, J.J.**; Mahoney, N.E.; Cook, D.; Gee, W.S.; Baig, N.; Higbee, B.S. Comparison of the volatile emission profiles of ground almond and pistachio mummies: part 1 - addressing a gap in knowledge of current attractants for navel orangeworm. Phytochem. Lett. 9: 102-106. 2014. [PDF reprint]**Beck, J.J.**; Smith, L.; Baig, N. An overview of plant volatile metabolomics, sample treatment and reporting considerations with emphasis on mechanical damage and biological control of weeds. Phytochem. Anal. 25: 331-341. 2014. [PDF reprint]
Hua, S.S.T.; **Beck, J.J.**; Sarreal, S.B.L.; Gee, W. The major volatile compound 2-phenylethanol from the biocontrol yeast, Pichia anomala, inhibits growth and expression of aflatoxin biosynthetic genes of Aspergillus flavus. Mycotoxin Res. 30: 71-78. 2014. **Beck, J.J.**; Mahoney, N.E.; Cook, D.; Higbee, B.S.; Light, D.M.; Gee, W.S.; Baig, N. Comparison of the volatile emission profiles of ground almond and pistachio mummies: part 2 - critical changes in emission profiles as a result of increasing the water activity. Phytochem. Lett. 8: 220-225. 2014. [PDF reprint]
Mahoney, N.E.; Gee, W.S.; Higbee, B.S.; **Beck, J.J.** Ex situ volatile survey of ground almond and pistachio hulls for emission of spiroketals: analysis of hull fatty acid composition, water content, and water activity. Phytochem. Lett. 7: 225-230. 2014. [PDF reprint]**2013**
Koivunen, M.E.; Duke, S.O.; Coats, J.R.; **Beck, J.J.** Chapter 1, Pest Management with Natural Products. In Pest Management with Natural Products, ACS Symposium Series, vol. 1141. Beck, J.J.; Coats, J.R.; Duke, S.O.; Koivunen, M.E. (eds). American Chemical Society, Washington, D.C., pp. 1-4. 2013. [PDF reprint]**Beck, J.J.**; Higbee, B.S. Chapter 5, Volatile natural products for monitoring the California tree nut insect pest Amyelois transitella. In Pest Management with Natural Products, ACS Symposium Series, vol. 1141. Beck, J.J.; Coats, J.R.; Duke, S.O.; Koivunen, M.E. (eds). American Chemical Society, Washington, D.C., pp. 59-72. [PDF reprint] 
Smith, L.; **Beck, J.J.** Effect of mechanical damage on emission of volatile organic compounds from plant leaves and implications for evaluation of host plant specificity of prospective biological control agents of weeds. Biocontrol Sci. Techn. 23(8): 880-907. 2013. [PDF reprint]**Beck, J.J.** Conophthorin from almond host plant and fungal spores and its ecological relation to navel orangeworm: a natural products chemist's perspective. J. Mex. Chem. Soc. 57(1): 69-72. 2013. [PDF reprint]
Pearse, I.S.; Gee, W.S.; **Beck, J.J.** Headspace volatiles from 52 oak species advertise induction, species identity, and evolution, but not defense. J. Chem. Ecol. 39(1): 90-100. 2013. [PDF reprint]**2012****Beck, J.J.**; Mahoney, N.E.; Cook, D.; Gee, W.S. Generation of the volatile spiroketals conophthorin and chalcogran by fungal spores on polyunsaturated fatty acids common to almonds and pistachios. J. Agric. Food Chem. 60(48):11869-11876.  2012. [PDF reprint]**Beck, J.J.**; Higbee, B.S.; Light, D.M.; Gee, W.S.; Merrill, G.B.; Hayashi, J.M. Hull split and damaged almond volatiles attract male and female navel orangeworm. J. Agric. Food Chem. 60(33): 8090-8096. 2012. [PDF reprint]
Light, D.M.; **Beck, J.J.** Behavior of codling moth (Lepidoptera: Tortricidae) neonate larvae on surfaces treated with microencapsulated pear ester. Environ. Entomol. 41(3): 603-611. 2012. [PDF reprint]**Beck, J.J.**; Light, D.M.; Gee, W.S. Electroantennographic bioassay as a screening tool for host plant volatiles. J. Vis. Exp. 63: e3931, DOI: 10.3791/3931. 2012. [PDF reprint]
Dragull, K.; **Beck, J.J.** Isolation by ion-exchange methods. In: Methods in Molecular Biology - Natural Products Isolation 3rd edition. Sarker, S. D.; Lutfun, N. (eds). The Humana Press Inc., New Jersey. Vol 864, pp 189-219. 2012. [abstract]**Beck, J.J.** Addressing the complexity and diversity of agricultural plant volatiles: a call for the integration of laboratory- and field-based analyses. J. Agric. Food Chem. 60(5): 1153-1157. 2012.  [PDF reprint]**2011**
Carruthers, R.I.; Franc, M.K.; Gee, W.S.; Cossé, A.A.; Grewell, B.J.; **Beck, J.J.** Volatile emissions from the flea beetle Altica litigata (Coleoptera: Chrysomelidae) associated with invasive Ludwigia hexapetala. Chemoecology. 21(4): 253-259. 2011. [PDF reprint]
Williams, M.; Warnock, B.; Betz, J.M.; **Beck, J.J.**; Gardner, D.R.; Lee, S.T.; Molyneux, R.J.; Colegate, S.M. High levels of pyrrolizidine-N-oxides detected in the endangered Cryptantha crassipes (Terlingua Creek Cat's-eye) using HPLC-ESIMS. Phytochem. Anal. 22(6): 532-540. 2011. [abstract]**Beck, J.J.**; Mahoney, N.E.; Cook, D.; Gee, W.S. Volatile analysis of ground almonds contaminated with naturally occurring fungi. J. Agric. Food Chem. 59(11): 6180-6187. 2011.  [PDF reprint].**Beck, J.J.**; Higbee, B.S.; Gee, W.S.; Dragull, K. Ambient orchard volatiles from California almonds. Phytochem. Lett. 4(2): 199-202. 2011. [PDF reprint]
Roitman, J.N.; Merrill, G.B; **Beck, J.J.** Survey of ex situ fruit and leaf volatiles from several Pistacia cultivars grown in California. J. Sci. Food. Agric. 91(5): 934-942. 2011. [PDF reprint]**2010 - 2007**
Light, D.M.; **Beck, J.J.** Characterization of microencapsulated pear ester (2E,4Z)-ethyl-2,4-decadienoate: a kairomonal spray adjuvant against neonate codling moth larvae. J. Agric. Food Chem. 58(13): 7838-7845. 2010. [PDF reprint]
Dragull, K.; **Beck, J.J.**; Merrill, G.B. Essential oil yield and composition of Pistacia vera 'Kerman' fruits, peduncles, and leaves grown in California. J. Sci. Food Agric. 90(4): 664-668. 2010. [PDF reprint]**Beck, J.J.** Letter to the Editor: styrene-producing microbes in food stuff. J. Food Sci. 75(1): x. 2010. [PDF reprint]**Beck, J.J.**; Merrill, G.B.; Higbee, B.S.; Light, D.M.; Gee, W.S. In situ seasonal study of the volatile production of almonds (Prunus dulcis) var. 'Nonpareil' and relationship to navel orangeworm. J. Agric. Food Chem. 57(9): 3749-3753. 2009. [PDF reprint]**Beck, J.J.**; Merrill, G.B.; Palumbo, J.D.; O'Keeffe, T.L. Strain of Fusarium oxysporum isolated from almond hulls produces styrene and 7-methyl-1,3,5-cyclooctatriene as the principal volatile components. J. Agric. Food Chem. 56(23): 11392-11398. 2008. [PDF reprint]**Beck, J.J.**; Smith, L.; Merrill, G.B. In situ volatile collection, analysis, and comparison of three Centaurea species and their relation to biocontrol with herbivorous insects. J. Agric. Food Chem. 56(8): 2759-2764. 2008. [PDF reprint]**Beck, J.J.**; Higbee, B.S.; Merrill, G.B.; Roitman, J.N. Comparison of volatile emissions from undamaged and mechanically damaged almonds. J. Sci. Food Agric. 88(8): 1363-1368. 2008. [PDF reprint]
Chou, S.-C.; Everngam, M.C.; **Beck, J.J.** Allelochemical phenolic acids from Gypsophila paniculata. J. Und. Chem. Res. 7(2): 40-42. 2008. [PDF reprint]
Wilson, K.A.; **Beck, J.J.**; Complete proton and carbon assignment of triclosan via one- and two-dimensional NMR analysis. Chem. Educ. 12(5): 338-342. 2007. [PDF reprint]**Beck, J.J.**; Chou, S.-C. Structural diversity of phthalides from the Apiaceae. J. Nat. Prod. 70(5): 891-900. 2007. [PDF reprint]**Beck, J.J.**; Kim, J.H.; Campbell, B.C.; Chou, S.-C. Fungicidal activities of dihydroferulic acid alkyl ester analogues. J. Nat. Prod. 70(5): 779-782. 2007. [PDF reprint]


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