Results 21 to 30 of about 3,053 (162)

Characterisation of 'Starking' apple polyphenoloxidase [PDF]

, 1998
Experiments were performed to optimise the extraction conditions of 'Starking' apple fruit polyphenoloxidase (PPO), to evaluate the affinity and specificity towards several substrates and to study the stability of enzyme extracts from apple samples ...
Galeazzi, MAM, Cano, MP, Morais, AMMB, Rocha, Ada   +3 more
core   +3 more sources

Fontes e doses de potássio na produção e qualidade do grão de café beneficiado Sources and doses of potassium on the yield and quality of green coffee

Pesquisa Agropecuária Brasileira, 1999
Um experimento de campo foi instalado num Latossolo Roxo distrófico, localizado na Fazenda Experimental da EPAMIG, São Sebastião do Paraíso, MG, em fevereiro de 1993, utilizando-se a espécie Coffea arabica L., cultivar Catuaí Vermelho, linhagem LCH 2077 ...
Enilson de Barros Silva, Francisco Dias Nogueira, Paulo Tácito Gontijo Guimarães, Silvio Júlio de Rezende Chagas, Laerte Costa   +4 more
doaj   +1 more source

Influence of terms and methods of storage on changes in enzyme activity of meadow chernozem-like soil on Zeya-Bureya plain

Бюллетень Почвенного института им. В.В. Докучаева, 2022
The analysis of the biological and enzymatic properties of soils is an important aspect of soil ecology, but the results of studies can be strongly influenced by the storage conditions of the samples.
O. A. Piletskaya, D. A. Yachnaya
doaj   +1 more source

Influência do processamento por via úmida e tipos de secagem sobre a composição, físico química e química do café (Coffea arabica L). Influence of the wet processing and drying types on chemical and physicochemical composition of coffee (Coffea arabica L.)

Ciência e Agrotecnologia, 2009
O café (Coffea arabica L.) é um importante produto de exportação brasileira, por fazer parte do hábito alimentar da população de diversos países. Sua produção vem passando por transformações tecnológicas que têm como objetivo agregar valores qualitativos
Mariá Auxiliadora Santos, Sára Maria Chalfoun, Carlos José Pimenta   +2 more
doaj   +1 more source

Some Biochemical properties of polyphenoloxidase from spearmint (Mentha arvensis)

Brazilian Archives of Biology and Technology, 2009
Polyphenoloxidase (PPO; EC 1.14.18.1) extracted from Mentha arvensis leaves was isolated by (NH4)2SO4 precipitation and extensive dialysis. Its optimum pH and temperature varied with the substrate. The PPO showed activity with various diphenols.
Valdir Augusto Neves, Douglas Gatte Picchi, Maraiza Aparecida da Silva   +2 more
doaj   +1 more source

Effect of dense-phase CO2 on polyphenoloxidase in model solutions

, 2014
This paper was addressed to investigate polyphenoloxidase structural changes in model solutions upon inactivation by DP-CO2 treatments. Polyphenoloxidase was chosen as a typical example of an enzyme responsible for food quality decay.
MANZOCCO, Lara, ANESE, Monica, Maria Cristina Nicoli, IGNAT, Alexandra, Sara Spilimbergo, Giovanna Ferrentino, Agnese Panozzo, Alexandra Ignat, Lara Manzocco, Giorgio Mirolo, NICOLI, Maria Cristina, Monica Anese, G. Ferrentino, L. Manzocco, A. Ignat, SPILIMBERGO, SARA, G. Mirolo, M. Anese, M. C. Nicoli, A. Panozzo   +19 more
core   +1 more source

Ativação de defesa em cacaueiro contra a murcha-de-verticílio por extratos naturais e acibenzolar-S-metil Activation of defence responses on cocoa against Verticillium wilt by natural extracts and acibenzolar-S-methyl

Pesquisa Agropecuária Brasileira, 2008
O objetivo deste trabalho foi avaliar o potencial de extratos fúngicos e vegetais na redução da murcha-de-verticílio do cacaueiro, as atividades da peroxidase e polifenoloxidase e o conteúdo de lignina.
Ricardo Borges Pereira, Mário Lúcio Vilela de Resende, Pedro Martins Ribeiro Júnior, Daniel Rufino Amaral, Gilvaine Ciavareli Lucas, Fábio Rossi Cavalcanti   +5 more
doaj   +1 more source

Peroxidase (POD) and polyphenoloxidase (PPO) in grape (Vitis vinifera L.) Peroxidase (POD) e polifenoloxidase (PPO) em uva (Vitis vinifera L.)

Ciência e Agrotecnologia, 2003
The enzimatic activity of peroxidase (POD) and polyphenoloxidase (PPO) extracted from three grape cultivars (Vitis vinifera L.), cultivated in Marialva city, state of Paraná, was evaluated in this study. The enzymatic extracts were prepared starting from
Estela de Pieri Troiani, Clariza Tomé Tropiani, Edmar Clemente   +2 more
doaj   +1 more source

Efeito da densidade populacional do pulgão-verde Schizaphis graminum (Rondani, 1852) (Hemiptera: Aphididae) na atividade enzimática em plantas de trigo Effect of the population density of the greenbug Schizaphis graminum (Rondani, 1852) (Hemiptera: Aphididae) on enzymatic activity on wheat plants

Ciência e Agrotecnologia, 2004
Verificou-se o efeito da densidade populacional do pulgão-verde Schizaphis graminum (RONDANI, 1852) em plantas de trigo (Triticum aestivum L.) na atividade das enzimas peroxidase e polifenoloxidase.
Flávia Batista Gomes, Custódio Donizete dos Santos, Jair Campos de Moraes, Marcio Marcos Goussain   +3 more
doaj   +1 more source

Polyamine treatments: an effective strategy to improve crop yield and fruit colour and to preserve quality of ‘Mollar de Elche’ pomegranate fruit during storage at chilling temperatures

Journal of the Science of Food and Agriculture, Volume 106, Issue 7, Page 4101-4112, May 2026.
Abstract BACKGROUND Climate change in Spain is altering the optimal conditions for producing high‐quality ‘Mollar de Elche’ pomegranate fruit, due to reduced colour development in husk and arils. In addition, the pomegranate requires storage above 7–10 °C, depending on cultivar, to preserve its quality because it is susceptible to chilling injury (CI ...
Jenifer Puente‐Moreno, Fernando Garrido‐Auñón, María E García‐Pastor, Fabián Guillén, Salvador Castillo, Daniel Valero, María Serrano   +6 more
wiley   +1 more source