22 documents found, page 1 of 3
Anti-inflammatory and Antioxidant Effects of the Microalga Pediastrum boryanum ...
Silva,Marília Garcez Corrêa da; Hort,Mariana Appel; Hädrich,Gabriela; Bosco,Lidiane Dal; Vaz,Gustavo Richter; Silva,Michelle Maidana Altenhofen daAbstract The potential use of microalgae in health has been the aim of different studies in the last years. This study investigated anti-inflammatory and antioxidant properties of three different extracts of green microalga Pediastrum boryanum in an acute inflammation model in rats. Rats were treated intraperitoneally with lyophilized biomass, the phenolic compounds and the extracellular extracts of P. boryanum...
Common resistance to Fusarium head blight in Brazilian wheat cultivars
Mendes,Gabriela da Rocha Lemos; Ponte,Emerson Medeiros Del; Feltrin,Ana Carla; Badiale-Furlong,Eliana; Oliveira,Antônio Costa deABSTRACT: Mycotoxin levels in Fusarium head blight (FHB) infections can be difficult to quantify. The relationship between mycotoxin and disease is not consistent and it is not clear if wheatpathogen interaction is of significance in regions where more than one Fusarium species with distinct trichothecene production ability co-exists. This study aimed to investigate whether a set of eight Brazilian wheat genoty...
PEROXIDASE FROM SOYBEAN MEAL: OBTENTION, PURIFICATION AND APPLICATION IN REDUCT...
Feltrin,Ana Carla Penteado; Fontes,Milena Ramos Vaz; Gracia,Henrique Delgado Kikumoto; Badiale-Furlong,Eliana; Garda-Buffon,JaquelineThis study established the conditions for the extraction of the enzyme peroxidase (PO) from soybean meal (SBM). An experimental design methodology was carried out in order to evaluate the effects of stirring rate time, pH and extracting solvent volume on the enzyme extraction. By using 5 g SBM and 50 mL phosphate buffer 10 mmol L-1 pH 4.7, 60 min stirring rate at 100 rpm, an enzyme with specific activity of 100...
Mycobiota and occurrence of Fumonisin B1 in wheat harvested in Southern Brazil
Mendes,Gabriela da Rocha Lemos; Reis,Tatiana Alves dos; Corrêa,Benedito; Badiale-Furlong,ElianaAlthough fumonisin B1 (FB1) is a mycotoxin poorly studied in wheat, the Fusarium genus fungi have been frequently detected in this cereal, especially in subtropical regions such as southern Brazil, thus studies on their occurrence are required. This study evaluated the mycobiota, water activity and the presence of FB1 in 11 wheat cultivars grown in the northeastern and northwestern of Rio Grande do Sul. The myc...
Single and sequential applications of metconazole alone or in mixture with pyra...
Spolti,Piérri; Guerra,Denis S.; Badiale-Furlong,Eliana; Del Ponte,Emerson M.Four fungicide trials were conducted in northern RS state during 2009. Six treatments, from the combination of one (flowering = F) or two applications (F + 10 days) of metconazole sprayed alone or in mixture with pyraclostrobin were tested. Fusarium head blight incidence (INC) and severity (SEV) were assessed at the pre-harvest period and Fusarium-damaged kernel (FDK), kernel infection (KI) and deoxynivalenol (...
Fusarium graminearum growth inhibition mechanism using phenolic compounds from ...
Pagnussatt,Fernanda Arnhold; Kupski,Larine; Darley,Francine Toralles; Filoda,Paula Freitas; Ponte,Émerson Medeiros Del; Garda-Buffon,JaquelineThe application of natural antifungal substances is motivated by the need for alternatives to existing methods that are not always applicable, efficient, or that do not pose risk to consumers or the environment. Furthermore, studies on the behaviour of toxigenic species in the presence of natural fungicides have enabled their safe application in the food chain In this study, Spirulina LEB-18 phenolic extract wa...
Extraction of γ-oryzanol from rice bran
Heidtmann-Bemvenuti,Renata; Nora,Náthali Saião; Badiale-Furlong,Elianaγ-oryzanol, a phytochemical, has antioxidant activities and potential health benefits. In this study, we aimed to develop a method for extracting high amounts of γ-oryzanol from rice bran and for verifying its stability in different solvents. Of the 5 methods under investigation, the one that yielded the highest γ-oryzanol content was further improved by using a central composite rotational design (DCCR - 2(4),...
Solid-state fermentation for the enrichment and extraction of proteins and anti...
Kupski,Larine; Cipolatti,Eliane; Rocha,Meritaine da; Oliveira,Melissa dos Santos; Souza-Soares,Leonor de Almeida; Badiale-Furlong,ElianaThe objective of this work was to evaluate the solid-state fermentation with Rhizopus oryzae CCT 7560 of rice bran for the enrichment of proteins and the antioxidant compounds in the fermented biomass. Fermentation was performed in tray bioreactors at 30ºC for 120 h. Protein extraction was done at alkaline pH, followed by precipitation with acetone. Phenolic compounds were extracted with cold methanol. The maxi...
Simultaneous extraction and detection of ochratoxin A and citrinin in rice
Hackbart,Helen C. S.; Prietto,Luciana; Primel,Ednei G.; Garda-Buffon,Jaqueline; Badiale-Furlong,ElianaThis study compared four extraction procedures for the simultaneous determination of mycotoxins ochratoxin A and citrinin in samples of rice. Soares and Rodriguez-Amaya and Tanaka procedures and the extraction methods QuEChERS (Quick, Easy, Cheap, Effective, Rugged and Safe) and by ultrasound were compared in terms of residue generation, limit of detection, limit of quantification and simultaneous recovery of m...
Determinação de deoxinivalenol e zearalenona em arroz natural e parboilizado e ...
Heidtmann-Bemvenuti,Renata; Hackbart,Helen Cristina dos Santos; Souza,Michele Moraes de; Badiale-Furlong,Eliana; Dors,Giniani CarlaThe QuEChERS extraction method followed by quantification using HPLC/UV-FL was evaluated for deoxynivalenol (DON) and zearalenone (ZEA) determination in natural and parboiled rice and their fractions (bran and husk). The comparison between QuEChERS and partition with acetonitrile extraction showed that the first one was better. It presented higher recovery (91% for DON, 105% for ZEA) wih precision ranging from ...