Beatriz Ferreira Carvalho

Universidade Federal de Lavras

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Carla Luiza da Silva Ávila

Universidade Federal de Lavras

Rosane Freitas Schwan

Universidade Federal de Lavras

Marcos Neves Pereira

Universidade Federal de Lavras

Joana Pinto

University of Aveiro

Disney Ribeiro Dias

Universidade Federal de Lavras

Andréia O. Santos

University of Minho

Gustavo Sales

Universidade Federal da Paraíba

Geraldo Andrade Carvalho

Universidade Federal de Lavras

Dayana Pereira de Andrade

Universidade Federal de Lavras

Daviane Martinele Costa

Universidade Federal de Lavras

Cooperative Institutions

Universidade Federal de Lavras

Universidade de São Paulo

University of Minho

Institute for Biotechnology and Bioengineering

Pontifical Catholic University of Rio de Janeiro

Universidade Estadual Paulista (Unesp)

Universidade Federal de Minas Gerais

University of Wisconsin–Madison

Universidade Federal de Viçosa

National Council for Scientific and Technological Development

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Seletividade fisiológica de inseticidas em duas espécies de crisopídeos

Pesquisa Agropecuária Brasileira (2010)

Maurício Sekiguchi de Godoy Geraldo Andrade Carvalho Beatriz Ferreira Carvalho Olinto Lasmar

O objetivo deste trabalho foi avaliar a seletividade de inseticidas recentemente lançados no mercado para o controle de pragas na cultura dos citros, em adultos de Chrysoperla externa e Ceraeochrysa cubana. Os produtos utilizados e as respectivas dosagens em g L-1 de i.a. foram: tiametoxam 200 WG, 0,05; imidacloprido 700 WG, 0,07; milbemectina 50 CE, 0,008; piriproxifem 100 CE, 0,075; e espirodiclofeno 240 SC, 0,06. Em cada tratamento, 11 casais de C. externa e 13 de C. cubana, com idade de até 24 horas, foram submetidos à aplicação dos inseticidas e de água (testemunha), por meio de torre de Potter. A mortalidade dos adultos, a capacidade de oviposição num período de oito semanas e a viabilidade dos ovos foram avaliadas. O tiametoxam foi classificado como nocivo a C. externa; o imidacloprido como moderadamente nocivo e os demais inseticidas como inócuos. Para C. cubana, o tiametoxam foi considerado nocivo, o espirodiclofeno foi levemente nocivo e os demais produtos foram inócuos. Os produtos milbemectina, piriproxifem e espirodiclofeno podem ser recomendados em programas de manejo integrado de pragas visando à manutenção dessas espécies de artrópodes benéficos em áreas de citricultura.

10.1590/s0100-204x2010001100004

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Citations (21)

Identification and characterization of yeasts from bovine rumen for potential use as probiotics

Journal of Applied Microbiology (2019)

Tatiane Fernandes Beatriz Ferreira Carvalho Hilário Cuquetto Mantovani Rosane Freitas Schwan Carla Luiza da Silva Ávila

The aim was to isolate, identify and characterize yeasts present in rumen fluid and to select strains showing potential as probiotics. Rumen fluid was sampled from 4 herds of dairy and beef cattle and 77 yeast isolates were identified. Initial screening was based on the capacity to maintain viability in a medium with different ruminal conditions. A second screening in fresh rumen fluid to assess the growth of inoculated yeasts and evaluate in vitro neutral detergent fibre digestibility (NDF‐D), pH and acid accumulation was conducted. The yeast population ranged from 3·84 to 6·76 log10 CFU per ml. The main species of yeast found were Pichia kudriavzevii, Candida rugosa, C. pararugosa, C. ethanolica and Magnusiomyces capitatus. Strains CCMA 933 (C. rugosa) and CCMA 970 (C. pararugosa) showed greater ability to survive in ruminal fluid and stimulated the production of acids. Isolate CCMA 967 (C. ethanolica) survived and improved the NDF‐D. Pichia kudriavzevii was the dominant yeast found in the cattle herds. Strains CCMA 933, CCMA 970 and CCMA 967 showed properties that could be useful as potential probiotics for cattle. This study was the first to select yeasts from the rumen fluid, with the potential to be used as probiotic, based on the ruminal conditions.

10.1111/jam.14350

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Effects of propionic acid and Lactobacillus buchneri (UFLA SIL 72) addition on fermentative and microbiological characteristics of sugar cane silage treated with and without calcium oxide

Grass and Forage Science (2012)

Beatriz Ferreira Carvalho Carla Luiza da Silva Ávila Joana Pinto Marcos Neves Pereira Rosane Freitas Schwan

Abstract The objective of this work was to evaluate the effects of a new strain of Lactobacillus buchneri (UFLA SIL 72) isolated from sugar cane ( Saccharum spp.) silage and the addition of propionic acid [1% based on fresh matter (FM)] to silages treated with and without calcium oxide (1% of FM) at 60 and 170 d of ensiling. A randomized block design with a 2 × 2 × 2 × 2 factorial arrangement of treatments was used to analyse the results. The use of calcium oxide reduced the ethanol content and neutral detergent fibre in all silages, increased pH values and favoured the growth of clostridia and yeasts. The addition of propionic acid reduced the yeast population, but it was not able to reduce ethanol content of silage. The addition of L. buchneri resulted in silages with higher concentration of propionate, reduced the levels of ethanol and reduced the population of clostridia in all silages. The use of calcium oxide is not recommended for silage of sugar cane.

Lactobacillus buchneri

Silage

Clostridia

Saccharum

10.1111/j.1365-2494.2012.00863.x

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Citations (42)

Wild Lactobacillus hilgardii (CCMA 0170) strain modifies the fermentation profile and aerobic stability of corn silage

Journal of Applied Animal Research (2017)

Camila Branda dos Reis Andréia O. Santos Beatriz Ferreira Carvalho Rosane Freitas Schwan Carla Luiza da Silva Ávila

The wild Lactobacillus hilgardii (CCMA 0170) strain isolated from sugarcane silage showed good results as an inoculant in this silage, so the aim of this study was to evaluate its effect on corn silage. After harvested, three replicates for each fermentation time of corn silage: 19, 60 and 103 days were prepared with L. hilgardii or uninoculated (control silage). Experimental silos were opened and their chemical composition was determined. The silages opened after 103 days were also assessed for aerobic stability and microbial population after aerobic exposure. The new inoculant reduced the dry matter losses and conserved more water-soluble carbohydrates. The inoculated silage showed higher lactic acid bacteria populations and lower yeasts and filamentous fungi than the control silage. The concentration of lactic and acetic acid and 1,2-propanediol increased in inoculated silage. The population of filamentous fungi and yeasts after aerobic exposure in the inoculated silage was less than the minimum detectable (<2.0 log CFU g−1). Lactobacillus hilgardii CCMA 0170 presents qualities for a good microbial inoculant for corn silage, more research is needed to evaluate their performance in large-scale silos.

Silage

Lactobacillus buchneri

10.1080/09712119.2017.1371609

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Lactic acid bacteria diversity in corn silage produced in Minas Gerais (Brazil)

Annals of Microbiology (2019)

Andréia O. Santos Carla Luiza da Silva Ávila Célia Maria Gonçalves Soares Beatriz Ferreira Carvalho Rosane Freitas Schwan

Abstract Purpose The diversity of lactic acid bacteria (LAB) in silages produced in warm climate countries is not well known. This study aimed to identify and characterise the metabolic and genotypic aspects of autochthonous LAB isolated from corn silage produced in the state of Minas Gerais, Brazil. Methods Eighty-eight LAB were isolated. To evaluate their performance at the strain level, all isolates were distinguished among strains using random amplified polymorphic DNA polymerase chain reaction (RAPD-PCR) and repetitive extragenic palindromic PCR (REP-PCR) techniques. The organic acid and ethanol production were determined by high-performance liquid chromatography (HPLC). Result The fingerprints obtained by RAPD-PCR with a M13 primer were more discriminatory than those obtained with the REP-PCR technique using a (GACA) 4 primer. Moreover, 28 representative isolates were identified as Lactobacillus acidophilus , L. buchneri , L. casei , L. diolivorans , L. hilgardii , L. paracasei , L. parafarraginis , L. plantarum , L. rhamnosus , L. zeae and Pediococcus acidilactici . Different fingerprinting profiles between isolates within the same species were observed. However, some strains isolated from different silages showed the same band profile, thus suggesting the presence of clusters with high similar fingerprints in silages from various regions. Conclusion A variation in LAB diversity was observed in the silages of the evaluated regions, with L. rhamnosus and L. buchneri showing the highest distribution. Differences in organic acid production were observed among the strains belonging to the same species. This research contributes to a better understanding of the LAB community present in corn silage produced in warm climates. These strains will be studied as potential silage starters.

Silage

Pediococcus acidilactici

10.1007/s13213-019-01528-w

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Citations (13)

Occurrence of mycotoxins and yeasts and moulds identification in corn silages in tropical climate

Journal of Applied Microbiology (2016)

Beatriz Ferreira Carvalho Carla Luiza da Silva Ávila P.M. Krempser Luís Roberto Batista Marcos Neves Pereira

This study was aimed to identify yeasts and moulds as well as to detect mycotoxin in corn silages in southern Minas Gerais, Brazil.Corn silages from 36 farms were sampled to analyse dry matter, crude protein, ether extract, ash, neutral detergent fibre, nonfibre carbohydrates and mycotoxins contents, yeasts and moulds population, pH and temperature values. The mycotoxins found in high frequency were aflatoxin in 77·7% of analysed samples, ochratoxin (33·3%) and zearalenone (22·2%). There was no significant correlation between the mycotoxin concentration and the presence of moulds. The pH was negatively correlated with ochratoxin concentration. Aspergillus fumigatus was identified in all silages that presented growth of moulds. Ten different yeast species were identified using the culture-dependent method: Candida diversa, Candida ethanolica, Candida rugosa, Issatchenkia orientalis, Kluyveromyces marxianus, Pichia manshurica, Pichia membranifaciens, Saccharomyces cerevisiae, Trichosporon asahii and Trichosporon japonicum. Another six different yeast species were identified using the culture-independent method.A high mycotoxin contamination rate (91·6% of the analysed silages) was observed. The results indicated that conventional culturing and PCR-DGGE should be combined to optimally describe the microbiota associated with corn silage.This study provides information about the corn silage fermentation dynamics and our findings are relevant to optimization of this silage fermentation.

Silage

Kluyveromyces marxianus

Geotrichum

Trichosporon

10.1111/jam.13057

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Citations (29)

New epiphytic strains of lactic acid bacteria improve the conservation of corn silage harvested at late maturity

Animal Feed Science and Technology (2021)

Daviane Martinele Costa Beatriz Ferreira Carvalho Thiago Fernandes Bernardes Rosane Freitas Schwan Carla Luiza da Silva Ávila

Pediococcus acidilactici

Silage

Lactobacillus buchneri

Pediococcus

10.1016/j.anifeedsci.2021.114852

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Citations (16)

Mycological diversity in whole-plant corn silages inoculated with Lentilactobacillus buchneri or Lentilactobacillus farraginis

Arquivo Brasileiro de Medicina Veterinária e Zootecnia (2024)

L.B. Morais Beatriz Ferreira Carvalho Luís Roberto Batista Rosane Freitas Schwan Carla Luiza da Silva Ávila

ABSTRACT The objective was to investigate the effect of wild lactic acid bacteria (LAB) strains on the fungal and chemical composition of whole-plant corn silage. Three treatments were evaluated: CON-without inoculation, LB-inoculated with Lentilactobacillus buchneri (CCMA 1366), and LF-inoculated with L. farraginis (CCMA 1362). The silages were stored for 29, 103, and 193 d. The highest acetic acid (19.7 g/kg DM) and 1,2-propanediol (6.3 g/kg DM) concentrations were found in the LF, the highest aerobic stability was observed in this silage after 29 d (158.3 h). The yeast population was below the detection level at 29 d in the LF and 103 and 193 d in all silages. Seven genera of filamentous fungi (FF) were identified before ensiling; none of these were found after ensiling. At 29 d, Monascus pilosus was identified in the LB after aerobic exposure but did not produce citrinin. At 103 and 193 d, there was Aspergillus fumigatus predominance. A. flavus was identified at 103 d in the CON and LB; none produced B1, B2, G1, or G2 toxins. LAB strains modified the silages’ chemical and FF composition, and LF increased aerobic stability and reduced FF’s yeast population and diversity.

Lactobacillus buchneri

Silage

10.1590/1678-4162-13023

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Methylotrophic yeast, lactic acid bacteria and glycerine as additives for sugarcane silage

Grass and Forage Science (2016)

Beatriz Ferreira Carvalho Carla Luiza da Silva Ávila Marcos Neves Pereira Rosane Freitas Schwan

Abstract The ensiling of sugarcane results in high dry‐matter ( DM ) loss, but the addition of glycerine may compensate for the loss during ensiling. Methanol is the most undesirable contaminant of crude glycerine destined for animal feeding. The aim of this study was to evaluate the ability of the yeast strain Pichia methanolica NCYC 1381 to reduce the methanol concentration in sugarcane silage inoculated with Lactobacillus hilgardii CCMA 0170 + glycerine. A randomized design consisted of four dose rates of glycerine (0, 4, 8 and 12% of fresh forage), three periods of silage fermentation (11, 34 and 68 d) and three combinations of microbial additives [ L. hilgardii ( LH ), L. hilgardii plus P. methanolica ( LH + PM ) and without microbial additive ( WI )]. The DM of the fresh sugarcane was 275 g kg −1 . The linear reduction in neutral detergent fibre caused by glycerine inclusion was probably due to a dilution effect. The LH treatment increased the concentrations of the succinic, acetic and propionic acids, and 1,2‐propanediol, and reduced the yeast population. The LH + PM treatment increased DM loss of sugarcane silage with 12% glycerine and L. hilgardii CCMA 0170 (6·1 log cfu g −1 of FM ) reduced the DM loss when compared to the silage without additives. Under the conditions of the experiment, the P. methanolica treatment did not reduce the methanol concentration in silage.

Silage

10.1111/gfs.12248

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Citations (8)

Education evaluation with breast cancer: an ecological study

Mastology (2024)

Darley de Lima Ferreira Filho Nancy Cristina Ferraz de Lucena Ferreira Renata Pereira de Melo Beatriz Ferreira Carvalho Maria de Lourdes Pereira

Objective: This study aimed to analyze the association between education level and breast cancer in Brazil among women from 20130 to 2022 and observe the relationship between education level and mortality rate in different regions of Brazil, under the hypothesis that women with lower education levels are diagnosed at more advanced stages, resulting in higher mortality rates. Methodology: This is an ecological study, using a time series design, based on the data collected from the national DATASUS database, including female individuals affected by malignant neoplasm of the breast between 2010 and 2022. Results: Among the risk factors related to a worse prognosis for breast cancer, education level stands out. A higher number of cases can be observed in patients with lower levels of education, which is more evident in the south, southeast, and midwest regions. The low level of education combined with socioeconomic factors leads to a lack of knowledge about the disease and its early detection methods, resulting in restricted access to healthcare services, delays in conducting and receiving tests, and difficulties in transportation to consults and treatment centers. Furthermore, a higher mortality rate was observed in regions such as the south, southeast, and midwest, reinforcing that women with lower education levels have a higher probability of presenting a more advanced stage of cancer at the time of diagnosis, resulting in a worse prognosis. Conclusion: The education level of patients proved to be an important factor related to worse outcomes in women with breast cancer in most regions of Brazil, associated with a lack of education and hindered access to healthcare services.

10.29289/259453942024v34s1087

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