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Full-Text Articles in Life Sciences
Effects Of Nitrogen Fertilization And Bioenergy Crop Species On Central Tendency And Spatial Heterogeneity Of Soil Glycosidase Activities, Min Yuan, Jianjun Duan, Jianwei Li, Siyang Jian, Lahiru Gamage, Kudjo E. Dzantor, Dafeng Hui, Philip A. Fay
Effects Of Nitrogen Fertilization And Bioenergy Crop Species On Central Tendency And Spatial Heterogeneity Of Soil Glycosidase Activities, Min Yuan, Jianjun Duan, Jianwei Li, Siyang Jian, Lahiru Gamage, Kudjo E. Dzantor, Dafeng Hui, Philip A. Fay
Agricultural and Environmental Sciences Faculty Research
Extracellular glycosidases in soil, produced by microorganisms, act as major agents for decomposing labile soil organic carbon (e.g., cellulose). Soil extracellular glycosidases are significantly affected by nitrogen (N) fertilization but fertilization effects on spatial distributions of soil glycosidases have not been well addressed. Whether the effects of N fertilization vary with bioenergy crop species also remains unclear. Based on a 3-year fertilization experiment in Middle Tennessee, USA, a total of 288 soil samples in topsoil (0–15 cm) were collected from two 15 m2 plots under three fertilization treatments in switchgrass (SG: Panicum virgatum L.) and gamagrass (GG: Tripsacum dactyloides L.) …
Performance Of A Uv-A Led System For Degradation Of Aflatoxins B1 And M1 In Pure Water: Kinetics And Cytotoxicity Study, Judy Stanley, Ankit Patras, Brahmaiah Pendyala, Matthew J. Vergne, Rishipal R. Bansode
Performance Of A Uv-A Led System For Degradation Of Aflatoxins B1 And M1 In Pure Water: Kinetics And Cytotoxicity Study, Judy Stanley, Ankit Patras, Brahmaiah Pendyala, Matthew J. Vergne, Rishipal R. Bansode
Agricultural and Environmental Sciences Faculty Research
The efficacy of a UV-A light emitting diode system (LED) to reduce the concentrations of aflatoxin B1, aflatoxin M1 (AFB1, AFM1) in pure water was studied. This work investigates and reveals the kinetics and main mechanism(s) responsible for the destruction of aflatoxins in pure water and assesses the cytotoxicity in liver hepatocellular cells. Irradiation experiments were conducted using an LED system operating at 365 nm (monochromatic wave-length). Known concentrations of aflatoxins were spiked in water and irradiated at UV-A doses ranging from 0 to 1,200 mJ/cm2. The concentration of AFB1 and AFM1 was determined by HPLC with fluorescence detection. LC–MS/MS …