• Korean Journal of Food Science and Technology
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• v.11 no.2
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• pp.112-117
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• 1979

By using the existing caustic refining system with a minimum modification and by using a combination of various emulsifiers(0.2 % sodium hexametaphosphate. 0.05 % sodium lauryl sulfate and 0.001 % dioctyl sodium sulfosuccinate), a new economical dewaxing process for sunflower seed oil was developed in order to reduce the cost of the dewaxing process. The results indicate that the waxes can be removed satisfactorily from the sunflower seed oil by emulsifying. batchwise or continuously, the oil with the aqueous surfactant solution, followed by centrifugation at ambient temperatures $(16{\sim}27^{\circ}C)$. Dewaxing loss for the batch process was satisfactory for both low wax-and high wax-crude oil, whereas dewaxing loss for the continuous process needs to be improved. The results indicate that initial level of wax content (low wax vs. high wax) did not affect the loss for batch process (0.82 % vs. 0.62 %), but affected the loss for continuous processes, regardless of the type of mixing mode (2.28 % and 5.68 % for low wax-and high wax-oil, respectively). It was also noted that the type of mixing mode (centactor vs. static mixer) for the continuous process affected the loss, regardless of the wax content (5.2 % and 2.8 % for contactor and static mixer, respectively).

• Tribology and Lubricants
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• v.3 no.2
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• pp.34-43
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• 1987

The effect of dilution solvent ratio, and the mixing ratio of MEK and toluene on the solvent dewaxing process has been studied. The results of this study are Summarized as follows; 1. The best mixing ratio of solvent of MEK process and Toluene when in case of light and medium Waxy oils, which has low viscosity was 48: 52, and when in case of heavy waxy oil, which has high viscosity was 45: 55. 2. The best dilution solvent ratio when in case of low viscosity oils. was 1:2.8 against waxy oils after annexing 5 times divided as well as, when incase of high viscosity oil was 1:3.5 after annexing 2 times divided. 3. The chilling temperature was -26$\circ$C and the reguired dewaxing time depends on the viscosity of waxy oils.

• 전기산업
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• v.8 no.5
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• pp.114-120
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• 1997

• Journal of the Korean Society of Food Culture
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• v.22 no.5
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• pp.603-608
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• 2007

Optimal winterizing condition of com oil was cooling temperature of bleached oil from $105^{\circ}C$ to $40^{\circ}C$. Then, filtering it after keeping $1{\sim}2^{\circ}C$ by lowering the temperature gradually with treating perlite of 0.3%(w/w) amount about bleached oil and stirring. We could measure that triglyceride(TG) that extracted from lipid components from spent perlite(SP) obtained through filtration after winterizing by SACC method is major causing materials of clouding in com oil. The result of separating TG fraction by agentation TLC was that it classified into 4 kinds -U3, SU2, S2U, S3 type and the most were U3 type. From this, it's easy to identify cause of clouding in com oil is TG fraction and most of them form wax materials that can observed. The results were they kept clear appearance at $0^{\circ}C$ generally during 39.6 to 96.5 hours, especially the result of A sample that had the lowest temperature condition while they have some difference by condition of treating temperature.

• Food Industry
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• s.15
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• pp.30-35
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• 1973

참깨는 전 세계적으로 중요한 식품재료 중의 하나이다. 특히 참깨에는 45$\~$63$\%$(평균 55$\%$)의 기름을 함유하고 있어 중요한 유지자원이 되며 그 기름은 온화하고 특유한 향미를 가질뿐만 아니라 천연항산화제를 풍부히 함유하고 있어 장기간의 저장에도 매우 안정하며 탈납을(winterizing)을 하지 않고 제조할 수 있는 천연 Salad 유로서도 그 의의가 크다.

• Journal of the Korean Society of Manufacturing Process Engineers
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• v.16 no.3
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• pp.107-112
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• 2017

The purpose of this study was to develop an extractor to improve the effective ingredient of propolis. In order to improve the performance of conventional alcohol extraction at room temperature, a striking-type extractor used with a sprayed mist (alcohols, 95% alcohol) was developed for use at $40^{\circ}C$. Extraction of the effective ingredient of propolis was tested, and the resulting material was analyzed using a device. The extraction test of the mist spraying method indicated that the level of flavonoid was 1.56%, which is 1.5 times the 1.04% shown in existing data from a conventional stirred extractor. In addition, the extraction time can be reduced by half and the cost reduced by about 12.7% per year. It is confirmed that the extractor developed with a sprayed mist (alcohols, 95% alcohol) appears effective at the low temperature.

• Journal of the Korean Society of Food Culture
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• v.12 no.2
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• pp.189-193
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• 1997

A study was conducted to investigate the effects of deodorizing temperature on physicochemical characteristics, fatty acid and triglyceride (TG) composition, and to estabilish the optimal deodorizing conditions in corn oil. Acid value (AV) of $240^{\circ}C$ treating group was showed 0.065 as the lowest level, the AV range was $0.08{\sim}0.09$ at $250{\sim}270^{\circ}C$. Lovibond total color was 24 as the lowest level, peroxide values (POV) were zero at $240{\sim}270^{\circ}C$ range. But POV was showed 0.42 meg/kg oil at $235^{\circ}C$, according to the optimal deodorizing temperature for the complete removal of peroxides was required more than $240^{\circ}C$. On the other hand, inclose of deodorizing temperature was conducted to the increase of saturated fatty acid content as myristic, palmitic, stearic and arachidic acid etc. Change of TG composition at treated group more than $250^{\circ}C$ was reliable, $S_3$ type TG was appeared. As a result, high temperature deodorizing was induced the undesirable influence at the physicochemical properties in deodorized corn oil.