Rheological properties of rice bran (Oryza sativa L.) oils processing and soapstock distillation residue

Antunes, Sara Albino; Lanza, Marcelo; Hense, Haiko

doi:10.1016/j.indcrop.2013.01.015

Cited by 16 publications

(12 citation statements)

References 15 publications

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“…The tests are carried out in triplicate for each sample. The percentage of inhibition was calculated according to (1) …”

Section: Antioxidant Activity Determination 22-diphenyl-1-picrylhmentioning

confidence: 99%

“…Oil obtained from the rice bran [1] has attracted much interest with many health benefits due to its rich source of natural antioxidant compounds (γ-oryzanol, tocopherols and tocotrienols). These compounds are considered to have an important role in preservation of the quality of oils due to their antioxidant activity.…”

Section: Introductionmentioning

confidence: 99%

“…In addition, the determination of the proportion of fatty acid in oils and fats can be analyzed by proton nuclear magnetic resonance spectroscopy, 1 H NMR spectroscopy in a short period of time and also has a great deal of structural information, required small amount of sample. There are many reports of NMR application for olive oil, walnut oil and other vegetable oils by several authors [8]- [10].…”

Section: Introductionmentioning

confidence: 99%

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Monitoring the Effect of Different Storage Conditions of Cold-Pressed Rice Bran Oil

Ponchurdchai¹,

Singkhonrat²

2016

IJCEA

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Abstract-This study investigated the effect of different storage conditions of cold-pressed rice bran oil from 2 different regions in Thailand (Lopburi province, LRBO and Yasothorn province, YRBO). All samples were stored at different temperature as opened and sealed bottle for 12 months. Fatty acid composition by nuclear magnetic resonance, NMR spectroscopy, chemical properties such as acid value, iodine value and peroxide value were reported. Also, the antioxidant content and its activity were evaluated, including FRAP assay (Ferric reducing antioxidant potential) and DPPH radical scavenging assay (1, 1-diphenyl-2-picrylhydrazyl radical reducing power methods). Cold-pressed rice bran oils sealed bottles for 12 months and freshly opened bottles have shown no affect to acid value, iodine value and peroxide value (p<0.05). Fatty acid composition of oil by 1 H NMR technique obtained a good agreement with gas chromatography technique and observed mol% of unsaturated fatty acid was slightly decreased after year storage. After 12-month storage below 5°C temperature, LRBO and YRBO showed good radical scavenging activities compared to quercetin with DPPH IC 50 of 0.647±0.02 and 0.663±0.02 mg/mL and with FRAP assay of 0.42106± 0.002 and 0.37471± 0.002 g quercetin equivalents/g, respectively.

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“…The tests are carried out in triplicate for each sample. The percentage of inhibition was calculated according to (1) …”

Section: Antioxidant Activity Determination 22-diphenyl-1-picrylhmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Monitoring the Effect of Different Storage Conditions of Cold-Pressed Rice Bran Oil

Ponchurdchai¹,

Singkhonrat²

2016

IJCEA

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“…Durante o aquecimento os triglicerídeos produzem compostos voláteis, estes compostos (dímeros, trímeros e polímeros) são formados principalmente por reações térmicas dos ácidos graxos insaturados, como o ácido linoleico, uns dos principais constituinte do óleo de arroz (SANTOS et al, 2004;ANTUNES;LANZA;HENSE, 2013). O segundo pico de 397 a 519 °C, é caracterizado pela degradação dos compostos menos voláteis, como os ácidos graxos saturados (SANTOS et al, 2005).…”

Section: Análises Térmicasunclassified

“…A destilação da BNOA para obtenção dos ácidos graxos gera o resíduo da destilação da borra de neutralização (RDBN). O RDBN é um subproduto e pode ser utilizado como matéria-prima em outros processos devido sua composição basicamente lipídica, além disso, o RDBN possui uma quantidade significativa de γ-orizanol, um poderoso antioxidante fenólico, boa estabilidade reológica e composição de ácidos graxos e características físico-químicas semelhante ao óleo refinado de arroz (JESUS, 2010;ANTUNES;LANZA, 2013).…”

Section: Introductionunclassified

PROPRIEDADES LUBRIFICANTES DE GRAXA DE EXTREMA PRESSÃO (EP) DESENVOLVIDA A PARTIR DO RESÍDUO DO PROCESSAMENTO DE ÓLEO DE ARROZ (Oryza sativa L.)

Antunes¹,

Hense²

2015

Anais Do XX Congresso Brasileiro De Engenharia Química

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RESUMO -O resíduo da destilação da borra de neutralização (RDBN) é um subproduto proveniente do processamento do óleo de arroz e possui alto teor de lipídios, podendo ser utilizado como matéria-prima em produtos que necessitam de fontes oleosas. Sendo assim, o objetivo deste trabalho foi o desenvolvimento de uma graxa biolubrificante com propriedades EP (extrema pressão) a partir do RDBN, utilizando como espessante argila organofílica (bentonita). Foram realizadas nas graxas lubrificantes análises térmicas e ensaios físico-químicos e mecânicos. Os resultados das graxas desenvolvidas com RDBN foram comparados ao de graxas desenvolvidas com óleo mineral. Concluiu-se através dos resultados que algumas das formulações de graxas elaboradas com o RDBN estão dentro dos padrões previstos na literatura para a classificação de graxa lubrificante EP.

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Rheological behavior of molasses for application in industry

Bofo

Cabral

Andrietta

et al. 2016

Env Prog and Sustain Energy

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Molasses is a by-product from the raw sugarcane industry with vast applications in the production of ethanol biofuel. A good knowledge of the rheological properties of this raw material is of crucial importance when designing and optimizing unit operations involved in processing it. The present work thus aims to study the rheological behavior of molasses at solid concentrations ranging from 20 to 70 o Brix and temperatures between 21 and 988C using a concentriccylinder rheometer. Experimental results showed Newtonian behavior in concentrations of 20 and 40 o Brix and pseudoplastic behavior in concentrations of 50 and 70 o Brix. For these results, the Power Law models presented the best fitting results. In addition, the dependence of the flow behavior index and the flow consistency index of the Power Law model on temperature and solid concentration was also successfully modeled through a polynomial model and an Arrhenius-type equation, respectively.

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Rheological properties of rice bran (Oryza sativa L.) oils processing and soapstock distillation residue

Cited by 16 publications

References 15 publications

Monitoring the Effect of Different Storage Conditions of Cold-Pressed Rice Bran Oil

Monitoring the Effect of Different Storage Conditions of Cold-Pressed Rice Bran Oil

PROPRIEDADES LUBRIFICANTES DE GRAXA DE EXTREMA PRESSÃO (EP) DESENVOLVIDA A PARTIR DO RESÍDUO DO PROCESSAMENTO DE ÓLEO DE ARROZ (Oryza sativa L.)

Rheological behavior of molasses for application in industry

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