Results 21 to 30 of about 13,888 (173)

Optimization of chemical esterification process of saponificated and acidulated soybean oil deodorizer distillate

open access: yesGrasas y Aceites, 2002
In this research work, it was optimized the reaction conditions for the chemistry esterification of unsaponifiable matter in soybean oil deodorizer distillate. The process involves (i) alkaline hydrolysis of saponifiable matter; (ii) acidulation of soaps
Nara Lúcia Facioli   +1 more
doaj   +1 more source

The influence of natural tocopherols during thermal oxidation of refined and partially hydrogenated soybean oils

open access: yesGrasas y Aceites, 2005
Samples of refined and partially hydrogenated soybean oils, with iodine values between 60 and 130, tocopherol-stripped or not by aluminium oxide treatment, were submitted to thermal oxidation, at 180 °C (during) for 10 hours. Samples were collected at 0,
C. J. Steel   +2 more
doaj   +1 more source

Technical and nutritional implications of trans fatty acids in hydrogenated oils

open access: yesGrasas y Aceites, 1993
Customers are increasingly paying attention to fats and oils because they are strongly health related. Many points are still confusing about this, but certainly there is one that will soon become public concern: the presence of trans fatty acids in ...
D. Barrera-Arellano
doaj   +1 more source

Interacciones entre mezclas de aceites de palma y palmiste interesterificados. II – Microscopía y Calorimetría Diferencial de Barrido (DSC)

open access: yesGrasas y Aceites, 2001
Palm oil (PO) and palm kernel oil (PKO) compositions (100/0, 80/20, 60/40, 50/50, 40/60, 20/80 and 0/100) were interesterified in laboratory scale under predetermined conditions (0.4% sodium metoxide, 20 minutes, 100ºC).
Renato Grimaldi   +3 more
doaj   +1 more source

Circulant Matrix‐Based Box–Behnken Designs With Economic Run Sizes

open access: yesQuality and Reliability Engineering International, EarlyView.
ABSTRACT We introduce Circulant Matrix‐Based Box–Behnken Designs (CBBDs), a new class of three‐level, second‐order response surface designs constructed using circulant matrix structures. These designs satisfy an enhanced orthogonal minimally aliased (OMA∗${\rm OMA}^*$) property: they retain the classical OMA property—where main effects are orthogonal ...
Tung‐Dinh Pham, Nam‐Ky Nguyen
wiley   +1 more source

Controle de qualidade de óleos comestíveis [PDF]

open access: yes, 2004
TCC (graduação) - Universidade Federal de Santa Catarina. Centro de Ciências Físicas e Matemáticas. Curso de Química.Os óleos comestíveis são substâncias insolúveis em água (hidrofóbicos), de origem animal ou vegetal, formados principalmente de produtos ...
TOFANINI, Aldo José
core  

Stability and usage of nitrogen in fats and oils

open access: yesGrasas y Aceites, 1998
The oxidative rancidity is, without a doubt, the main cause of the deterioration of fats and oils, and defines the shelf life of this type of products. Therefore, the stability (resistance against oxidation) has come to be one of the factors which worry ...
Daniel Barrera Arellano
doaj   +1 more source

Assessing the Effects of Biodiesel Production on Sustainability: A Bayesian Two‐Stage Data Envelopment Analysis Approach

open access: yesSustainable Development, EarlyView.
ABSTRACT Sustainable development transforms production systems, requiring integrated environmental, social, and economic strategies. Energy systems are key agro‐industrial supply chains in developing countries. Brazil's soybean supply chain impacts Gross Domestic Product, mainly through exports.
Aline Veronese da Silva   +3 more
wiley   +1 more source

Proposta de modelagem transiente para a clarificação de óleos vegetais: experimentos cinéticos e simulação do processo industrial [PDF]

open access: yes, 2001
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico. Programa de Pós-Graduação em Engenharia QuímicaAssim como em muitos setores, a refinaria de óleos tem se adaptado às exigências do mercado através de técnicas ...
Oliveira, Cristiana Gomes de
core  

Composição química e concentração mínima bactericida de dezesseis óleos essenciais sobre Escherichia coli enterotoxigênica

open access: yesRevista Brasileira de Plantas Medicinais, 2016
RESUMO Este trabalho teve por objetivo avaliar o efeito bactericida in vitro de dezesseis óleos essenciais sobre Escherichia coli enterotoxigênica (ETEC).
A.A. SOUZA   +3 more
doaj   +1 more source

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