• Title, Summary, Keyword: rice bran oil

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Quality Characteristics of Baked Yackwa with Different Types and Amounts of Oils (기름의 종류 및 첨가량을 달리한 구운 약과의 품질특성 연구)

  • Jang, So Young;Park, Mi Jung;Lee, Sook Young
    • Journal of the Korean Society of Food Culture
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    • v.28 no.5
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    • pp.525-532
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    • 2013
  • This study aimed to find oils that can replace high-priced sesame oil. The quality of baked Yackwa containing different types of oils (rice bran, olive, or sesame oils) and amount of oils (30, 35, 40%) were investigated. The hardness of the baked Yackwa depended on the amount of oil, as more oil led to a softer texture of baked Yackwa. According to sensory evaluations, baked Yackwa with rice bran oil received the highest score in taste quality, with sesame oil receiving the second highest score. The flavor of baked Yackwa containing the rice bran oil was also better than other samples. In contrast, there were no significant differences in taste between other samples, including baked Yackwa containing all ingredients, 40% sesame oil, and 40% olive oil. The overall acceptance showed the highest score in baked Yackwa with rice bran oil (35%). In conclusion, rice bran oil (35%) is recommended as an oil ingredient for baked Yackwa.

Adsorption Treatment of Petroleum Oil on Aqueous Phase (수용액중에 함유된 석유화합물들의 흡착처리에 관한 연구)

  • Lee, T.H.;Son, B.C.;Lee, S.B.;Kim, l.H.
    • Analytical Science and Technology
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    • v.5 no.1
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    • pp.1-5
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    • 1992
  • The adsorption amount of petroleum oil on XAD-4, XAD-7 and replacement adsorbents as rice bran, rice straw and sawdust were studied by using batch method measured in the optimum adsorption condition. The adsorption capacity of rice bran and rice straw of petroleum oil were excellent as well as adsorption ability about 50% of XAD resins and adsorption capacity of their replacement adsorbents were increased with optimum condition that pyrolysis time was 30 min. at $200^{\circ}C$. Adsorption ability of sawdust was very weak on the 30% MeOH aqueous medium but adsorption ability was range of about 50% of XAD resin's adsorption capacity on the 0.5M NaCl aqueous medium. Adsorption ability of rice bran and rice straw showed the same adsorption capacity even if difference external structure. Therefore, showing that rice bran and rice straw were have to good adsorption ability as replacement adsorbent for XAD resins.

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A Study on the Heated Edible Oils( I ) -Flow Properties of Soybean, Rapeseed, Rice bran, Corn and Perilla Oils- (가열식용유(加熱食用油)에 관(關)한 연구(硏究) ( I ) -대두(大豆), 채종(菜種), 미당(米糖), 옥수수, 들깨유(油) 유동성(流動性) 관(關)해서-)

  • Kim, Eun-Ae;Shin, Kab-Choul;Kim, Haeng-Ja;Park, Jae-Ok
    • Journal of Nutrition and Health
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    • v.10 no.3
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    • pp.1-6
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    • 1977
  • Flow properties of heated edible oils, such as soybean, rapeseed, rice bran, corn and perilla oils, were measured with Maron-Belner type capillary viscometer. These oils were heated at $180{\pm}5^{\circ}C$ (general cooking temperature) for $5{\sim}20$ hours except soybean oils ($5{\sim}40$ hours). Fluidities of these heated oils except rice bran oil were decreased according to heating time and decreasing ratio of fluidity was outstanding after 15 hour heating in corn oil and 20 hours heating in soybean and perilla oils. All the oils examined in this experiments except rice bran oil showed non-Newtonian motion after 15 hour hinting at high shear stress and Newtonian motion at less than 10 hour heating. In the soybean oil non-Newtonian flow property was outstanding after 30 hour heating at $180{\pm}5^{\circ}C$. Rice bran oil exhibit characteristic flow property, that is, non heated rice bran oil has lowest fluidity but heated one has highest fluidity compared to other oils examined in this experiment. Change of fluidity with extension of heating time was not detected and non heated rice bran oil showed non-Newtonian motion.

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Photo oxidation of Rice Bran Oil and Protective Action of Antioxidants (미강유의 광산화와 항산화제의 방어작용)

  • Paik, Tai-Hong;Lee, Young-Kuk
    • Journal of the Korean Applied Science and Technology
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    • v.4 no.1
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    • pp.19-22
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    • 1987
  • To investigate the protective action of various antioxidants on the photooxidation of rice bran oil, it was irradiated with red and visible light in presence and absence antioxidants with or without sensitizer (methylene blue). 1. Rice bran oil with and without sensitizer in chloroform-ethanol (4:1, v/v) media was largely oxidized under visible light irradiation. on the other hand, rice bran oil without sensitizer was hardly oxidized under red light irradiation. 2. Rice bran oil with sensitizer was oxidized much faster than that without. And the absorbance of it irradiated with visible was increased more than that with red light. 3. The effectiveness of antioxidants on the rice bran oil photooxidation was same order as follows: Irradiation with visible light, no addition of sensitizer ${\beta}$-carotene > dl-{$\alpha}$-tocopherol > BHT > BHA Irradiation with visible light, addition of sensitizer ${\beta}$-carotene > BHT > dl-${\alpha}$tocopherol > BHA Irradiation with red light, addition of sensitizer ${\beta}$-carotene > BHA > BHT > dl-${\alpha}$-tocopherol From these results, we concluded that rice bran oil was largely oxidized under visible light irradiation, therefore it must be protected from photooxidative deterioration by the addition of antioxidants.

Exhaust Emissions Characteristics of a Small Diesel Engine using Rice-bran Oil (미강유 적용 소형 디젤엔진의 배기배출물 특성)

  • 나우정;유병규;정진도
    • Journal of Biosystems Engineering
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    • v.23 no.2
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    • pp.125-134
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    • 1998
  • It seems possible, by use of vegetable oils, to solve the pollution problem caused by the exhaust gas from diesel-engine vehicles. Recently vegetable oils has received considerable attention as an alternative and clean energy source to the foreseeable depletion of world oil supplies. The objective of this study is to experimentally investigate the characteristics of exhaust emissions of a small diesel engine using light oil, rice-bran oil, heated rice-bran oil, rice-bran oil treated with ultrasonic energy. SO$_2$ emission from the pure and the treated rice-bran oils was not detected at speeds hgher than 1,800 rpm while that from the light oil was detected at all the speeds at 4/4 load. NOx emission form these vegetable oils was generally higher compared to that from the light oil for most of the test conditions. tendency opposite to that of NOx emission. The data obtained in this experiment may be applicable for the desist of small diesel engine using the alternative fuels.

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Property of Yeast Cell Protein from Rice Bran Oil (미강유를 이용한 효모균체 단백질의 특성)

  • 안태영
    • The Korean Journal of Food And Nutrition
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    • v.3 no.1
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    • pp.35-38
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    • 1990
  • For the purpose of the production of single cell protein from rice bran oil, yeast was isolating from soil. It was belonging to Candida albicans Species. These experiments were conducted to find out the property on yeast cell from rice bran oil Molecular weight for the main protein on yeast cell protein from rice bran oil separated by 1% SDS polyacrylamide gel electrophorosis was 22, 000.

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A Study on Characteristics of Rice Bran Oil as an Alternative Fuel in Diesel Engine(I) (디젤기관의 대체연료로서 미장유의 특성 연구(I))

  • 오영택;최승훈;김승원
    • Transactions of the Korean Society of Automotive Engineers
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    • v.10 no.2
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    • pp.15-22
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    • 2002
  • Lately, our world is faced with very serious problems related to the increased air pollution of the exhaust emissions from automobiles. In particular, the exhaust emissions of diesel engines are recognized as a main cause which strongly influence environment. Lots of researchers have attempted to develop various alternative fuels to reduce these harmful emissions in diesel engine. The purpose of this investigation is to evaluate the possibility of esterfied rice bran oil for diesel fuel substitution in a naturally aspirated D. 1. diesel engine, and also find means to reduce smoke emissions in esterfied rice bran oil combustion. The smoke emission of esterfied rice bran oil is reduced remarkably in comparison with commercial gas oil, that is, it was reduced approximately 58.2% at 2500rpm. But, power, torque and brake specific energy consumption didn't have no large differences. It was concluded that esterfied rice bran oil can utilize effectively as an alternative and renew- able fuel fur diesel engine.

COMBUSTION CHARACTERISTICS OF ESTERIFIED RICE BRAN OIL AS AN ALTERNATIVE FUEL IN A DIESEL ENGINE

  • Choi, S.H.;Oh, Y.T.
    • International Journal of Automotive Technology
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    • v.7 no.4
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    • pp.399-406
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    • 2006
  • The smoke emission of diesel engines is being recognized as one of the major source of the air pollution problems. This study investigates the potential of esterified rice bran oil to reduce smoke emission as an alternative fuel for diesel engines. Because the esterified rice bran oil has approximately a 10.5% oxygen content, the combustion of the diesel engine improved and exhaust smoke decreased. Gas chromatography was used to analyze not only the total amount of hydrocarbon but also the amount of hydrocarbon components from $C_1$ to $C_6$ in the exhaust gas to determine an exact source responsible for the remarkable reduction in the smoke emission. The number of individual hydrocarbon($C_1{\sim}C_6$) as well as the total amount of hydrocarbon of esterified rice bran oil reduced significantly compared to that of hydrocarbon of diesel fuel.

Growth Performance of Lambs Fed Diet Supplemented with Rice Bran Oil as Such or as Calcium Soap

  • Bhatt, R.S.;Karim, S.A.;Sahoo, A.;Shinde, A.K.
    • Asian-Australasian Journal of Animal Sciences
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    • v.26 no.6
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    • pp.812-819
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    • 2013
  • Forty two Malpura lambs (21 d old) were divided into three groups of 14 each consisting of 8 females and 6 males. Lambs were allowed to suckle their respective dams twice daily up to weaning (13 wks) and offered free choice concentrate and roughage in a cafeteria system. The lambs in control group were fed conventional concentrate mixture, in RBO group concentrate mixture fortified with 4% industrial grade rice bran oil and in Ca-soap rice bran oil (as in RBO group) was supplemented in the form of calcium soap. The concentrate intake decreased($p{\leq}0.05$) in RBO group as a result total dry matter, crude protein and metabolizable energy intake decreased compared to control whereas Ca-soap prepared from the same rice bran oil stimulated the concentrate intake leading to higher total dry matter, crude protein and energy intakes. The digestibility of dry matter ($p{\leq}0.05$), organic matter ($p{\leq}0.05$) and crude protein ($p{\leq}0.05$) was higher in RBO group followed by Ca-soap and control whereas no effect was observed for ether extract digestibility. Higher cholesterol ($p{\leq}0.05$) content was recorded in serum of oil supplemented groups (RBO and Ca-soap) while no effect was recorded for other blood parameters. Rice bran oil as such adversely affected and reduced the body weight gain ($p{\leq}0.001$) of lambs in comparison to control whereas the Ca-soap of rice bran oil improved body weight gain and feed conversion efficiency in lambs. Fat supplementation decreased total volatile fatty acids ($p{\leq}0.05$) and individual volatile fatty acid concentration which increased at 4 h post feeding. Fat supplementation also reduced ($p{\leq}0.05$) total protozoa count. Ca-soap of rice bran oil improved pre slaughter weight ($p{\leq}0.05$) and hot carcass weight ($p{\leq}0.05$). It is concluded from the study that rice bran oil in the form of calcium soap at 40 g/kg of concentrate improved growth, feed conversion efficiency and carcass quality as compared to rice bran oil as such and control groups.

Effects of Rice Bran Extracts on Oxidative Stability of Corn Oil (옥수수유의 산화안정성에 대한 미강 추출물의 효과)

  • Yeon, Jeyeong;Lee, Seon Mi;Yang, Jinwoo;Kwak, Jieun;Kim, Youngwha;Jeong, Heon Sang;Lee, Junsoo
    • Journal of the Korean Society of Food Science and Nutrition
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    • v.45 no.10
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    • pp.1513-1517
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    • 2016
  • Rice bran contains high amounts of fiber and various phytochemicals, including vitamin E, ${\gamma}$-oryzanol, and phenolic acids. The oxidative stabilities of corn oil added with three rice bran extracts from two rice cultivars (Dasan 1 and Ilpum) were evaluated. The three rice bran extracts were unsaponifiable matter of rice bran (USM), methanolic extract of rice bran oil (MEO), and methanolic extract of defatted rice bran (MEDR). Each sample was stored at $50^{\circ}C$ for 24 days. Oxidation of these samples was determined every 3 days by measuring the peroxide value (POV) and conjugated diene value (CDV). Vitamin E content was analyzed on day 0 and day 24. The results show that the POV and CDV values of samples increased gradually during the storage period. The order of oxidative stability was shown as BHT> MEDR> MEO> USM> control, regardless of cultivars. In the case of vitamin E, ${\alpha}$-T, ${\gamma}$-T, ${\alpha}$-T3, and ${\gamma}$-T3 contents decreased by 89%, 31%, 83%, and 32% after storage for 24 days, respectively. In conclusion, MEDR showed higher oxidative stability and may have potential as a source of natural antioxidants in the oil industry.