Characterization of phospholipid reverse micelles in relation to membrane processing of vegetable oils

Subramanian, R.; Ichikawa, Sosaku; Nakajima, Mitsutoshi; Kojima, Toshinori; Maekawa, Taira

doi:10.1002/1438-9312(200102)103:2<93::aid-ejlt93>3.0.co;2-9

Cited by 44 publications

(11 citation statements)

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“…It was reported that at the particular concentration of phosphatidylcholine (8,900 mg/kg), when the ratio of water to phosphatidylcholine was increased from 0.079 to 0.112, the size of micelles increased from 3.56 to 4.60 nm (Subramanian et al . ). Subramanian et al .…”

Section: Resultsmentioning

confidence: 97%

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Colloid-Enhanced Ultrafiltration of Canola Oil: Effect of Process Conditions and MWCO on Flux, Fouling and Rejections

Niazmand¹,

Razavi

Farhoosh

2014

Journal of Food Processing and Preservation

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In the present work, the efficiency of colloid‐enhanced ultrafiltration (CEUF) of canola oil miscella was investigated using an anionic surfactant (sodium dodecyl sulfate salt [SDS]), chelating agent (ethylenediaminetetraaceticacid [EDTA]), salt (calcium chloride [CaCl2]) and two molecular weight cutoffs of hydrophobic (polyvinylidene fluoride) membranes (50 and 100 kDa). There were thicker fouled layer on both membrane surfaces for SDS‐ and EDTA‐pretreated samples. The flux reduction of M116 membrane was more than M183 membrane with the all samples except SDS added ones. It was observed that CEUF of EDTA‐ and SDS‐pretreated samples exhibited high efficiency in removing phosphorus. Increasing temperature from 25 to 55C improved the steady‐state permeate flux of SDS‐pretreated samples to extent of 13 kg/m2h. Furthermore, increasing pressure led to increase the permeate flux of pretreated sample except CaCl2 adding ones. Practical Application The small size of impurities of crude vegetable oils is a challenge of membrane refining, so increasing their size as a micelle or colloid by adding chemical agents may improve the separation. The knowledge of chemical agents behavior in relation to impurities as well as their impact on membrane performance such as flux, fouling and rejection will be benefit to decide for industrial applications. Also the information of effect of operation conditions changes such as temperature and pressure on membrane performance will be useful for operation controlling in micellar‐enhanced ultrafiltration in comparison with ultrafiltration.

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Section: Resultsmentioning

confidence: 97%

“…However, there have been few attempts focusing on enhancing reverse micelle content as well as hydratable PLs to improve the performance of oil refining by membranes (Subramanian et al . , ).…”

Section: Introductionmentioning

confidence: 99%

Colloid-Enhanced Ultrafiltration of Canola Oil: Effect of Process Conditions and MWCO on Flux, Fouling and Rejections

Niazmand¹,

Razavi

Farhoosh

2014

Journal of Food Processing and Preservation

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“…A meniscus is formed between the wet and solid surface due to surface tension that reduces the pressure of the liquid, causing an attractive force (Ranade 1987). Addition of lecithin to oil lowers its surface tension (Subramanian et al. 2001).…”

Section: Resultsmentioning

confidence: 99%

Adhesion of Sugar and Oil Solutions

Ren

Barringer

2009

Journal of Food Processing and Preservation

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Salt was applied to surfaces coated with sugars and oils to test their adhesion. There was no difference in adhesion between 70% solutions of sucrose, glucose and fructose. Below 70%, adhesion by glucose was greater than for sucrose. Adhesion increased from propylene glycol with two hydroxyl groups to glycerol with three, but there was no change in adhesion from glycerol to sorbitol, which has six hydroxyl groups. The adhesion of glycerol and sorbitol was not different from sucrose. In corn syrups, adhesion increased with increasing dextrose equivalent. Increasing oil content increased adhesion up to 0.2 mg/cm2, then plateaued. Oils produced a similar adhesion to solutions of 70% sugar. Adhesion varied with the type of oil. Most likely, the differences in adhesion were due to the presence of natural surfactants. When lecithin was added, the adhesion increased significantly. The addition of other surfactants did not significantly increase the adhesion. PRACTICAL APPLICATIONS Sugar and oil are frequently used to adhere powders and small particulates, such as seasonings and spices, to a food surface. The desire for low calorie foods means minimizing the sugar and oil used for adhesion. Glucose was shown to have greater adhesion than sucrose, therefore less of it could be used to achieve the same adhesion. Addition of lecithin to oils increased its adhesion. Certain oils had higher adhesion than others, due to natural surfactants. Most of the fat replacers tested did not show significant adhesion. Using this information, current tack agents could be replaced with other sugars or oils to produce the same adhesion at a lower concentration.

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“…The conventional oil refinement process is characterized by high energy, water, and chemical product requirements, loss in neutral oil and nutrients, and a high rate of effluent production (Subramanian et al, 2001;Roy et al, 2014). In contrast, the use of membranes during processing has been shown to simplify the process.…”

Section: Introductionmentioning

confidence: 99%

Ultrafiltration-based degumming of crude rice bran oil using a polymer membrane

2016

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SUMMARY:Membrane technology has been gaining momentum in industrial processes, especially in food technology. It is believed to simplify processes, reduce energy consumption, and eliminate pollutants. The objective was to study the performance of polyvinylidene fluoride (PVDF) and polyethersulfone (PES) polymeric membranes in the degumming of the miscella of crude rice bran oil by using a bench-scale tangential filtration module. In addition, oil miscella filtration techniques using hexane and anhydrous ethyl alcohol solvents were compared. All membranes showed the retention of phospholipids and high flow rates. However, the best performance was observed using the 50-kDa PVDF membrane in miscella hexane solvent, with a 95.5% retention of the phosphorus concentration (by a factor of 1.4), resulting in a permeate with 29 mg·kg −1 of phosphorus and an average flow rate of 48.1 L·m −2 ·h −1 . This technology can be used as a low-pollution, economical alternative for the de-gumming of crude rice bran oil, being effective in the removal of hydratable and non-hydratable phospholipids, resulting in oils with a low phosphorus content. KEYWORDS:Crude rice bran oil; Phospholipids; Polymeric membranes; Ultrafiltration RESUMEN: Desgomado de aceite de salvado de arroz crudo usando ultrafiltración con membrana polimérica. La tecnología de membrana ha ido ganando impulso en los procesos industriales, especialmente en tecnología de los alimentos. Se piensa que simplifica los procesos, reduce el consumo de energía, y elimina contaminantes. El objetivo fué estudiar el rendimiento de las membranas poliméricas de fluoruro de polivinilo (PVDF) y poliéter-sulfona (PES) en el desgomado de miscelas de aceite de salvado de arroz crudo, mediante el uso de un módulo de filtración de escalado tangencial. Además, se compararon las técnicas de filtración de miscelas de aceite, utilizando como disolventes hexano y alcohol etílico anhidro. Todas las membranas mostraron retención de los fosfolípidos y altas tasas de flujo. Sin embargo, se observó un mejor rendimiento usando la membrana de PVDF de 50-kDa con hexano como disolvente, con una retención del 95,5% de la concentración de fósforo (por un factor de 1,4), dando como resultado un permeado con 29 mg·kg −1 de fósforo y un promedio tasa de 48,1 L·m de fluido. Esta tecnología se puede considerar como de baja contaminación y una alternativa económica para el desgomado de aceite de salvado de arroz crudo, siendo eficaz en la eliminación de los fosfolípidos hidratables y no hidratables, resultando unos aceites con un bajo contenido en fósforo. PALABRAS CLAVE: Aceite de salvado de arroz crudo; Fosfolípidos; Membranas poliméricas; UltrafiltraciónCitation/Cómo citar este artículo: Sehn GAR, Gonçalves LAG, Ming CC. 2016. Ultrafiltration-based degumming of crude rice bran oil using a polymer membrane. Grasas Aceites 67 (1): e120. doi: http://dx

show abstract

Characterization of phospholipid reverse micelles in relation to membrane processing of vegetable oils

Cited by 44 publications

References 8 publications

Colloid-Enhanced Ultrafiltration of Canola Oil: Effect of Process Conditions and MWCO on Flux, Fouling and Rejections

Colloid-Enhanced Ultrafiltration of Canola Oil: Effect of Process Conditions and MWCO on Flux, Fouling and Rejections

Adhesion of Sugar and Oil Solutions

Ultrafiltration-based degumming of crude rice bran oil using a polymer membrane

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