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1.
Bol. Centro Pesqui. Process. Aliment ; 24(2): 475-489, jul.-dez. 2006. graf
Article in Portuguese | LILACS | ID: lil-452802

ABSTRACT

O objetivo deste trabalho foi avaliar a composição dos ácidos graxos, em especial os ácidos graxos trans, de amostras de batata palha adquiridas em supermercados da cidade de Curitiba (PR)Brasil. Foram analisadas 20 marcas diferentes de bata álha, utilizando-se métodos oficiais para a determinação da gordura total. Determinou-se o perfil dos ácidos graxos mediante cromatografia a gás (CG), usando padr~es analíticos para sua identificação. Concluiu-se que a gordura vegetal hidrogenada utilizada como meio de fritura da batata palha gera alto teor de gordura trans (em torno de 14,5g/100g) e que o nível dessa gordura torna-se quase nulo com o emprego de óleo vegetal ou óleo de palma como veículo de fritura


Subject(s)
Fatty Acids , Food Handling , Food Quality , Food Technology , Solanum tuberosum , Trans Fatty Acids
2.
Bol. Centro Pesqui. Process. Aliment ; 21(2): 379-392, jul.-dez. 2003. tab, graf
Article in Portuguese | LILACS | ID: lil-357809

ABSTRACT

The aim of the present work was to isolated yeast strains able to degrade the degomming water originated from the wet processing of coffee, characterizing the formed metabolities, The drink prepared from the treated grains by wet processing is considered of better quality when compared with the grains treated by dry process. However, the great polluent potential of the residual water from this processing represents serious concern for the environment. The degumming water essentially presents organic contamination, with Oxygen Biochemical Demand (OBD) and Oxygen Chemical Demand (OCD) rates supeior to 20.000 mg O2/L. Candida tropicalis, C. lypolitica, C. guillermondii, C. parapsilopsis, Kloeckera apiculata e Rhodotorula rubra, isolated from coffee cheeries wew inoculated in flasks containing the degumming water and then submitted to constant agitation (120 rpm) for 48 hours at 28§C. The isolated species revealed capacity to degrade the substrate, however C. parapsilopsia showed reduction percentages of OBD and OCD rates of 50.14 ppor cento e 29.81 por cento, respectivelly, showing the viability of the use of those microorganisme as biological depollutants.


Subject(s)
Wastewater , Coffee Industry , Food Technology , Yeasts , Aquatic Microorganisms , Water Pollution , Yeasts
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