Estudo da utilização de biomassa em substituição parcial ao carvão mineral utilizado no processo de fabricação do ferro gusa em alto-forno

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Viabilidade técnica e econômica de povoamentos de eucalyptus spp. Sob diferentes espaçamentos visando a produção de biomassa para energia

Pós-graduação em Ciência Florestal - FCA

Obtenção, caracterização e aplicação de lipases vegetais

Pós-graduação em Ciências Biológicas (Botânica) - IBB

Ácido cítrico e quitosana na conservação de lichias 'Bengal'

The aim of this study was to evaluate citric acid application with or without chitosan on the maintenance of the quality of litchi 'Bengal'. It was used litchi on mature maturation stage. After selection, fruits were immersed for one minute on the solution of citric acid and chitosan: [1]Control - without immersion; [2] citric acid 300g L-1, [3] citric acid 300 g L-1 + chitosan 0,3%, [4]citric acid 300 g L-1 + chitosan 0,6%, [5] citric acid 600 g L-1, [6] citric acid 600 g L-1 + chitosan 0,3%, [7] citric acid 600 g L-1 + chitosan 0,6%. Chitosan of low molecular weight and deacetylation degree of 75,58% (Sigma - Aldrich®) were used. After immersion, fruits were put to drain the excess of solution. Then, they were stored in cool chamber at 5ºC, previously sanitized, for 20 days. The experiment was conducted following a completely randomized design, with a factorial scheme composed by seven coating solutions and five sampling dates. Every five days were evaluated: loss of fresh mass of fruits; color; content of anthocyanins and the activity of peel enzymes polyphenoloxidase and peroxidase. It was verified that the solution of citric acid 600 g L-1, associated or not to chitosan, and the combination of chitosan 0,3% to 300 g L-1 of citric acid were the most efficient to maintain the quality of litchi 'Bengal' for 20 days at 5ºC.

Efeitos da deriva de clomazone, aplicado isoladamente ou em mistura com ametryn, sobre características produtivas de laranjeira 'Hamlin'

This experiment aimed to evaluate the effect of increasing clomazone (sprayed alone or in mixture with ametryn) drift simulation on quantitative and qualitative aspects of orange production when applied at two developmental plant stages: flowering and initial fruit development (fruits 2 cm diameter or smaller). Increasing drifts of clomazone, in two formulations, and clomazone in mixtures with ametryn were tested. Fruit morphological features, fruit color, flower and fruit abortion and leaf chlorophyll content were evaluated. Simulated drift similar to the recommended dose of clomazone and clomazone plus ametryn caused fruit abortion in citrus at the stage of fruits 2 cm diameter or smaller. Lower drift doses did not result in fruit abortion. Fruit diameter reduction was observed with drift off above 25% of clomazone alone recommended rate and 50% when in mixture with ametryn or in microcapsule formulation. Clomazone drift at 50% of the recommended rate (alone or in mixture with ametryn ) caused clorotic and necrotic spots in the fruit peel. Drift did not affect juice quality in any of the treatments tested.

Storage of 'Espada' mango fruits in modified atmosphere and cooling: effects on conservation

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Rice-Straw Mulch Reduces the Green Peach Aphid, Myzus persicae (Hemiptera: Aphididae) Populations on Kale, Brassica oleracea var. acephala (Brassicaceae) Plants

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Composição química e atividade antioxidante da polpa e resíduos de abacate 'Hass'

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Processamento de frutos de abacaxizeiro cv smooth cayenne: perfil de açúcares e ácidos dos sucos e composição nutricional da farinha de cascas

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Recuperação e correspondência de depósitos de calda em diferentes superfícies e concentração de acaricida para controle de ácaro Brevipalpus phoenicis (Geijskes, 1939) com volume de aplicação reduzido

Pós-graduação em Agronomia (Entomologia Agrícola) - FCAV

Preference and infestation level of Anastrepha fraterculus (Wiedemann, 1830) on fruits of some Psidium guajava L. cultivars and relation to their physicochemical parameters

This study aimed to verify the preference and infestation level of Anastrepha fraterculus (Diptera: Tephritidae) [South American fruit fly] in fruits of guava cultivars and to correlate them to variables such as peel coloration, soluble solids and pH of fruit cultivars. The following cultivars were used: Pedro Sato, Paluma, Casco and S,culo XXI. The infestation was evaluated in cages, considering two scenarios: no-choice and multiple choice. In both tests, evaluations of the fruit attraction to insects were conducted for a period of 1', 3', 5', 10', 20', 30', 1 h, 2 h, 6 h, 12 h and 24 h. The visit of A. fraterculus on the assayed cultivars in relation to the time was studied by logistic regression. After 10 days, the number of larvae in each fruit was recorded. In the multiple choice test, the visit proportions were significantly higher in the fruits of cvs. S,culo XXI and Pedro Sato than in those of cvs. Paluma and Casco. In the no-choice test, the visit proportions were significantly lower in the Paluma fruits. In both tests, the rate of fruit infestation by A. fraterculus did not differ among cvs. Pedro Sato, Paluma and Casco, whereas the fruits of cv. S,culo XXI were more infested. The indexes of pH did not interfere with the infestation of A. fraterculus, whereas a high rate of soluble solids and low color angle appear to be crucial for discriminating the fruits of the most susceptible cultivars. Infestation rate of S,culo XXI fruits displayed significant correlations with: A degrees Brix (r= 0.7078) and color angle (h) (r= -0.9499) of guava fruits under the multiple choice conditions.

Structural properties of beds packed with agro-industrial solid by-products applicable for solid-state fermentation: Experimental data and effects on process performance

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Obtaining lipases from byproducts of orange juice processing

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Bonding of facial silicon with nanoparticles to an acrylic resin substrate

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Atividade antibacteriana de plantas do cerrado da região de Botucatu - São Paulo

The studies related to research on new antimicrobial products have received special attention from researchers, especially given the emergence of microbial strains resistant to conventional antimicrobials. Thus, the present study was aimed to test the antimicrobial action of hydro-alcoholic extracts of plants collected in Cerrado region of Botucatu, following the species: Achyrocline satureioides (Lam) DC (macela), Stryphnodendron adstringens (Mart) Coville (barbatimão), Miconia rubiginosa (Bonpl.) DC (quaresma-branca), Davilla elliptica A. St-Hil (lixinha), Siparuna guianensis (negramina) e Solanum lycocarpum A.St-Hil (lobeira). The plants were always collected in the morning, in areas near the town of Botucatu, and extracts were prepared using a solvent such as methanol 70% from materials dried (50°C) and ground into mill knives. The extraction was performed for 48 hours at refrigerator temperature, followed by filtration, removal of methanol solvent in a rotary evaporator, determination of the dry weight of the extracts (mg / mL) and phytochemical analysis of the same. The sensitivity tests for 10 S. aureus, 11 E. coli and 11 P. aeruginosa, isolated from human clinical cases were performed by diluting volumes of the extracts in Mueller Hinton Agar (MHA) and determination of minimum inhibitory concentration (MIC) (mg / mL). According to the results and statistical analysis, it was found that depending on the bacteria tested, and in descending order of antibacterial activity for S. aureus: Lixinha sheet > Barbatimão sheet > Quaresma-Branca > Macela > Lixinha fruit > Barbatimão shell > Lobeira > Negramina; E. coli: Lixinha sheet > Barbatimão sheet > Lixinha fruit = barbatimão peel > Quaresma-Branca > Macela = Lobeira > Negramina and P. aeruginosa: Lixinha leaf > Barbatimão bark > Barbatimão leaf > Lixinha fruit > Macela > Lobeira > Quaresma - Branca = Negramina... (Complete abstract click electronic access below)