Search

Mango (Mangifera indica L.) has great socioeconomic importance to Brazil, but its production is affected by anthracnose. Chitosan films have shown potential in controlling this disease. In this study, the effect of the association of chitosan with phenolic compounds and extracts on the Colletotrichum tropicaledevelopment was evaluated. Phenolic compounds and extracts from mango peel were incorporated into 2.0% chitosan solutions and tested in vitro. In the in vivo experiment, after pathogen inoculation and application of treatments, fruits were evaluated for anthracnose incidence and severity. Controls consisted of the application of water or pure culture medium and fungicide imazalil. The experimental design was completely randomized and data were submitted to analysis of variance. In the in vitro test and in the assessment of disease intensity, means were compared using the Scott-Knott and Tukey tests (p

Aims: The aim of this study was to evaluate the in vitro effect of different phosphite formulations and concentrations on the development of Colletotrichum musae. Sample: to evaluate the inhibition of germination, mycelial growth and sporulation of Colletotrichum musae. Study Design: Treatments were conducted in a completely randomized design, with 4 replicates, each replicate consisting of 1 Petri dish. Place and Duration of Study: Laboratory of Post-Harvest Pathology, State University of Montes Claros, between March and October 2017. Methodology: Three different phosphite formulations were used: FCu1 (4% Cu + 20% P2O5), FCu2 (4% Cu + 22% P2O5) at concentrations of 0.5;1.0; 1.5 and 2.0 mL L-1 and FK (42% P2O5 + 27.7% K2O) at concentrations of 0.5; 1.0; 1.5 and 2.0 mg.L-1. Products were incorporated into the respective culture media. Culture medium alone and culture medium + imazalil were used as controls. Petri dishes were housed in BOD chamber at 25°C under a 12 hours photoperiod. Results: Results were submitted to analysis of variance and regression, and means were compared by the Tukey test (P

Aims: To evaluate the in vitro effect of mango peel extracts using different types of solvent and concentrations on the Colletotrichum gloeosporioides development. Study Design: Activities were aimed at evaluating the in vitro antifungal potential of mango peel extracts. Study Location and duration: The study was carried out at the Laboratory of Post-Harvest Pathology of Fruits and Vegetables - State University of Montes Claros and Laboratory of Natural Products, Department of Chemistry - Federal University of Lavras during October and December 2018. Methodology: ‘Palmer’ mango peel (Mangifera indica) was submitted to drying in oven and grinding. Subsequently, extracts were obtained in Soxhlet system, using methanol, ethyl acetate and hexane as solvents. The three extracts were tested in vitro at concentrations of 0.0; 0.25; 0.5; 1.0 and 2.0 mg/mL by adding them in culture medium against C. gloeosporioides, which was isolated from mango fruits with anthracnose symptoms. The effect of extracts and their respective concentrations on the mycelial growth rate and conidia production and germination was evaluated. The design was completely randomized in a 3 x 5 factorial arrangement with 5 replicates. Results: Increased extract concentrations caused reduction in the mycelial growth rate of the pathogen (R2 = 0.96). Both factors under study acted simultaneously in conidia production (P < 0.05), and the hexane extract presented better results for this analyzed variable. There was total germination inhibition (P < 0.05) when 1 mg/mL ethyl acetate extract and 2 mg/mL methanol and hexane extracts were used. Conclusion: Methanol, hexane and ethyl acetate mango peel extracts had inhibitory effect on the in vitro C. gloeosporioides development.

Azedinha (Rumex acetosa) is a vegetable crop species consumed in natura in salads and pertains to the group of non-conventional vegetables. These rustic plants are often considered weeds plants. There exist two types of native azedinha in the Sete Lagoas region, Minas Gerais state, Brazil, that are usually grown in family gardens and here denominated Type I and Type II. In this study we characterized the morphologic, physic-chemical and chromatic characteristic of these two types of azedinha. The study was carried out in randomized complete blocks with four replications in dependences of the EPAMIG (Non-Conventional Vegetable Bank) in Prudente de Morais, Brazil. Plants were trained to the point of harvest, 90 days after the planting of seedlings, when they were harvested for analysis. We evaluated the characteristics on the leaves: weight, length, width, number of veins, width/length ratio, transverse and longitudinal diameter of the base of the petiole and longitudinal and transverse diameter ratio of the base of the petiole. We also evaluated the contents of macro and micronutrients and chemical characteristics of the plant. There are significant differences between the assessed characteristics between azedinha types I and II. We concluded that the plants probably belong to two different varieties. A azedinha (Rumex acetosa) é uma espécie olerícola consumida in natura em saladas e integra o grupo de hortaliças não convencionais. As plantas são rústicas sendo muitas vezes consideradas "matos" e plantas daninhas. Existem dois tipos de azedinha nativas na região de Sete Lagoas, cultivadas normalmente em hortas familiares e aqui denominadas Tipo I e Tipo II. O objetivo deste trabalho foi caracterizar morfológica, físico-química e cromaticamente os dois tipos de azedinha nativos da região de Sete Lagoas. O trabalho foi conduzido em delineamento de blocos ao acaso com quatro repetições em área do Banco de Hortaliças Não Convencionais da EPAMIG, em Prudente de Morais-MG. As plantas foram conduzidas até ao ponto de colheita, 90 dias após o encanteiramento das mudas, quando foram colhidas e analisadas. Avaliou-se as características foliares: peso, largura, comprimento, número de nervuras, razão largura/comprimento, diâmetro transversal e longitudinal da base do pecíolo e razão diâmetro longitudinal e transversal da base do pecíolo. Foram avaliados os teores de macro e micronutrientes e as características bromatológicas e cromáticas da planta. Há diferenças significativas quanto às características avaliadas entre os tipos I e II de azedinha. Concluiu-se que as plantas analisadas, provavelmente, pertençam a duas cultivares distintas.

Luana Sabrine Silva, Ana Claudia Morais Souza, Marcelo Morais Maria, Annatachi Botelho Jardim, Washington Azevedo da Silva, Christiano Vieira Pires, Marcelo Resende Souza, Andreia Marcal da Silva. Estudo da Viabilidade de Bifidobacterium Longum em Bebidas Lacteas Probioticas. In: Anais do 12o Congresso Latinoamericano de Microbiologia e Higiene de Alimentos MICROAL 2014 [= Blucher Food Science Proceedings, num.1, vol.1]. Sao Paulo: Editora Blucher, 2014. DOI 10.5151/foodsci-microal-155 Estudo da Viabilidade de Bifidobacterium longum em Bebidas Lacteas Probioticas

Luana Sabrine Silva, Ana Claudia Morais Souza, Marcelo Morais Maria, Claudia Freire de Andrade Morais Penna, Washington Azevedo da Silva, Christiano Vieira Pires, Marcelo Resende Souza, Andreia Marcal da Silva. Avaliacao Microbiologica e Fisico-Quimica de Queijos Probioticos Contendo Bifidobacterium Longum. In: Anais do 12o Congresso Latinoamericano de Microbiologia e Higiene de Alimentos MICROAL 2014 [= Blucher Food Science Proceedings, num.1, vol.1]. Sao Paulo: Editora Blucher, 2014. DOI 10.5151/foodsci-microal-157 Avaliacao Microbiologica e Fisico-Quimica de Queijos Probioticos Contendo Bifidobacterium longum