Recovery of the high aggregated compounds present in the deodorizer distillate of the vegetable oils using supercritical fluids

Mendes, Marisa Fernandes; Pessoa, Fernando; Coelho, G.V.; Uller, A.M.C.

doi:10.1016/j.supflu.2004.11.009

Cited by 50 publications

(47 citation statements)

References 12 publications

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“…Another important bioactive component is squalene (2,6,10,15,19,23-hexamethyl-2,6,10,14,18,22-tetracosahexaene, (C 30 H 50 ), all-trans) a terpenoid hydrocarbon used in cosmetic formulations and for ensuring stability of vegetable oil; it additionally accounts for the biosynthesis of cholesterol [Mendes et al, 2005]. Depending on the quality of crude vegetable oil and physical/chemical refi ning processes, fatty acids constitute 25-75% of the DD.…”

Section: Introductionmentioning

confidence: 99%

Chemical Characterization of Canola and Sunflower Oil Deodorizer Distillates

Naz¹,

Sherazi²,

Talpur³

et al. 2014

Pol. J. Food Nutr. Sci.

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Key words: canola and sunfl ower deodorizer distillates, phytosterols, tocopherols, fatty acids, physico-chemical propertiesIn the present work deodorizer distillates of canola and sunfl ower oil were studied for their chemical characterization. Tocopherols, sterols, hydrocarbons and fatty acid composition were determined by Gas chromatography Mass spectrometry (GC-MS). Results indicated that deodorizer distillates of canola oil (DDCLO) studied had higher saponifi cation value in the range of 164.2-175.8 mg/g and all deodorizer distillates of sunfl ower oil (DDSFO) had high iodine value of 126.2-127.1 g/100 g. Peroxide value and free fatty acids were present in the range between 7.0-8.9 mEq/Kg and 35.7-54.4 g/100 g in DDSFO and DDCLO samples, respectively. Contents of oleic acid (49.3-51.1 g/100 g) and linolenic acid (6.2-7.5 g/100 g) were signifi cantly greater in DDCLO samples. Conversely, DDSFO contained concentrated amount of linoleic acid (52.8-53.3 g/100 g). Tocopherols and hydrocarbons were signifi cantly higher in all DDSFO samples while, sterols were dominant in DDCLO samples. GC-MS provided excellent results for simultaneous determination of tocopherols, sterols, hydrocarbons and fatty acid composition of deodorizer distillates of canola and sunfl ower oil. Unauthenticated Download Date | 5/12/18 1:22 AM

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Section: Introductionmentioning

confidence: 99%

Chemical Characterization of Canola and Sunflower Oil Deodorizer Distillates

Naz¹,

Sherazi²,

Talpur³

et al. 2014

Pol. J. Food Nutr. Sci.

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“…There are some interesting relationships and conclusions that can be deduced from the results obtained by Mendes (Mendes, 2005, Mendes, 2000 and Chang (Chang, 2000) regarding the yield and concentration factor of pairs of compounds at different conditions of pressure and temperature. The binary mixture of tocopherol and squalene cannot be separated at low pressure conditions.…”

Section: Supercritical Fluid Extraction (Sfe)mentioning

confidence: 97%

“…However, the use of high pressure conditions to concentrate tocopherols makes the system energetically expensive, but the industrial process can be economically viable using conditions of approximately 90 atm and 40 °C (Mendes et al, 2002). At these specific conditions, only fatty acids are separated from tocopherol (Mendes et al, 2005). An increase in pressure and temperature increases the oil extraction and tocopherol recovery, although different pressure-temperature systems need to be used in order to separate the different components (sterols, tocopherols, fatty acids and squalene).…”

Section: Supercritical Fluid Extraction (Sfe)mentioning

confidence: 99%

“…However, the author mentioned that with the increase of CO 2 volume, the separation factor can reach 1.7, but the poor increase in the concentration factor does not justify the raise in gas volume. The following research groups focused on the separation of the problematic pairs by supercritical fluids using synthetic mixtures: (Mendes, 2005), (Mendes et al, 2000), (Wang et al, 2004), (Nagesha, 2004) and .…”

Section: Supercritical Fluid Extraction (Sfe)mentioning

confidence: 99%

“…The binary mixture of tocopherol and squalene cannot be separated at low pressure conditions. An acceptable separation needs a raise in pressure to almost 203 bar ( (Mendes, 2005) and (Mendes, 2000)). However, a recovery of 90% and a purity of 60% of -tocopherol has been achieved using a pressure swing adsorption (PSA) device, that is a widely used process in the separation of gas mixtures for air-drying, oxygen and nitrogen separation of air, hydrogen purification, and various other separations.…”

Section: Supercritical Fluid Extraction (Sfe)mentioning

confidence: 99%

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Supercritical CO 2 (SC‐CO 2 ) processing of fats and oils has been widely investigated since SC‐CO 2 offers an environmentally friendly alternative with added advantages such as moderate operating conditions and solvent‐free extracts and residues. From a processing perspective, a unique advantage of SC‐CO 2 processing lies in its versatility, which results from the ability to modify solvent properties by changing operating conditions (temperature and pressure) or by the addition of cosolvents. A good understanding of the fundamentals of solubility behavior of lipid components in SC‐CO 2 as affected by operating conditions and solute properties is required to realize its full potential in fats and oils processing. The operational flexibility offered by supercritical fluid technology enables the processor to fine‐tune solvent properties and to develop novel processes by the integration of unit operations of extraction, fractionation, reaction, and particle formation to meet the process objectives. These unit operations have been effectively utilized for the extraction and refining of oils, concentration of bioactive components from oils or oil by‐products, modification of the physical properties of fats and oils, production of oleochemicals and design of delivery systems for numerous applications.

show abstract

Recovery of the high aggregated compounds present in the deodorizer distillate of the vegetable oils using supercritical fluids

Cited by 50 publications

References 12 publications

Chemical Characterization of Canola and Sunflower Oil Deodorizer Distillates

Chemical Characterization of Canola and Sunflower Oil Deodorizer Distillates

Extraction and Enzymatic Modification of Functional Lipids from Soybean Oil Deodorizer Distillate

Progress in Supercritical Fluid Technology for Fats and Oils Processing

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