• Title/Summary/Keyword: rice bran oil

검색결과 160건 처리시간 0.03초

선택된 식물자원에서 추출조건에 따른 Phytosterol과 Tocopherol의 함량분석 및 추출유로부터 재구성지질의 합성 (Analysis of Phytosterols and Tocopherols, and Production of Structured Lipids from the Extracted Plant Oils)

  • 조은진;이기택
    • 한국식품저장유통학회지
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    • 제10권3호
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    • pp.370-375
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    • 2003
  • 식물유자원 중 참깨, 호두, 통밀, 미강을 원료로 하여 35$^{\circ}C$ 조건에서는 100rpm의 항온교반수조에서 1, 3, 6시간 단위로 추출하고, 8$0^{\circ}C$조건에서는 soxhlet extractor에서 1, 3, 6시간 단위로 각각 추출하여 추출방법 및 시간에 따른 최적 추출조건을 비교ㆍ분석하였다. 그 결과, 각 온도에서의 추출시간에 따른 추출율과 추출온도에 따른 추출방법의 변화는 추출율에 다소 영향을 미치는 것으로 확인되었다(p<<0.05). 원료별로는 호두가 최고 63.07%로 가장 높은 유지추출율을 나타냈으며, 그 뒤로 참깨, 미강 등이 각각 최고 39.28, 15.62% 등의 추출율을 나타내었다. GC에 의한 지방산 조성분석 결과, 추출된 식물유지 모두 linoleic acid, oleic acid 등이 가장 높은 비율을 차지하였다 Phytosterol 분석 결과, 식물성 유지 4종 중 통밀의 전체 sterol 함량이 최고 2.25%로 가장 높게 나타났으며, 미강, 호두, 참깨 등이 각각 최고 2.03, 1.57, 0.44% 등의 함량을 보이는 것으로 조사되었다. HPLC에 의한 tocopherol 함량 분석 결과 전체 tocopherol의 함량은 참깨, 통밀 등이 각각 최고 3.42, 2.92% 등으로 높게 나타났으며, 그 뒤로 호두, 미강 등이 각각 최고 0.16, 0.07% 등의 함량을 나타내었다. 한편, 식물성 유지와 CLA를 각각 1:3 mol의 비율로 혼합한 후 IM 60을 이용, 합성하여 재구성지질을 생성하고 GC에 의해 지방산 조성을 분석한 결과, 반응시간이 길수록 재구성지질 중의 CLA의 함량이 증가하는 것을 알 수 있었다. 최종 24시간 동안 반응시 총 CLA의 함량이 가장 많은 것은 통밀로써, 23.75 mol%를 나타내었고, 그 뒤로 미강, 참깨, 호두 등이 각각 19.15, 16.46, 16.28 mol% 등을 나타내었다.

Effects of dietary supplementation with rice bran oil on the growth performance, blood parameters, and immune response of broiler chickens

  • Kang, Hwan Ku;Kim, Chan Ho
    • Journal of Animal Science and Technology
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    • 제58권3호
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    • pp.12.1-12.7
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    • 2016
  • Background: The objective of this experiment was to investigate the effects of dietary supplementation of rice bran oil (RBO) on growth performance, blood parameter, and immune response in broiler chickens. Methods: A total of 240 1-d-old ROSS 308 male broilers were randomly allotted to 4 dietary treatments with six replicated pens consisting of ten chicks. The basal diet was formulated to be adequate in energy and nutrients. Three additional diets were prepared by adding 5, 10 or 20 g/kg of RBO to the basal diet. The experimental diets were fed on an ad libitum basis to the birds during 35 d. Results: Results indicated that increasing inclusion level of RBO in diets improved BW gain (linear and quadratic, P < 0.01), improve feed conversion ratio (linear, P < 0.05) of birds during 0 to 35 d. There was no effect of inclusion level of RBO in diets on feed intake of birds. There was no effect of inclusion level of RBO in diets on erythrocytes of birds. However, heterophil, lymphocyte, and monocytes increased (linear and quadratic, P < 0.01) with inclusion level of RBO in diets increased. Feeding the diets containing increasing amount of RBO to birds increased (linear, P < 0.01) the concentrations of total cholesterol. Increasing inclusion level of RBO in diets increased concentrations of IgG (linear, P < 0.01). There was no effect of inclusion level of RBO in diets on concentrations of IgM. Conclusions: These results suggest that dietary RBO may be used functional ingredient to improve growth performance, total cholesterol in serum, and immune response of birds.

미강유 중 고농도 자유지방산의 에스테르화 (Esterification of High Concentration Free Fatty Acid in Rice Bran Oil)

  • 신용섭
    • 한국환경과학회지
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    • 제17권2호
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    • pp.211-224
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    • 2008
  • Characteristics of the esterification reaction between free fatty acid in rice bran oil and methanol was investigated in the presence of catalysts, such as PTS(p-toluene sulfonic acid), Amberlyst 15 dry and SCX(silica gel based strong cation exchange resin). While reaction temperature was kept constant at $65^{\circ}C$, initial feed content of free fatty acid was varied from 100% to 1% by addition of pure free fatty acid which was previously made from rice bran oil. Also, the effect of mole ratio of methanol to fatty acid on the final conversion was examined. When esterification of pure free fatty acid was catalyzed by several acids, final conversions were increased in order of Amberlyst 15 dry, SCX and PTS. Using PTS catalyst, initially the reaction proceeded in homogeneous 2nd oder reaction mechanism. However, phase of reaction mixture changed from homogeneous to heterogeneous along the reaction time and then reaction rate was retarded by mass transfer resistance of methanol. Final conversion of free fatty acid in reaction mixture was depended on initial feed content of free fatty acid, and had maximum value at 30% of initial feed free fatty acid content for all kinds of catalysts used. And the final conversion was increased with mole ratio of methanol by the improvement of reaction rate. When initial feed free fatty acid content below 10% and the reaction was catalyzed by PTS, concentration of free fatty acid in reaction mixture was increased in the middle of reaction time by hydrolysis of triglyceride in reaction mixture. Also, if silica gel was added into the reaction mixture which had initial feed free fatty acid content below 50%, final conversion was increased by the adsorption of moisture produced. The SCX catalyst made the esterification reaction of free fatty acid to progress like in case of PTS catalyst. However, when initial feed free fatty acid content below 10%, concentration of free fatty acid in. reaction mixture was decreased monotonically and not increased in the middle of reaction time on the contrary to the case of PTS. Thus, SCX catalyst accomplished more high value of final conversion than PTS catalyst for the initial feed fatty acid content range from 50% to 5% In case of initial feed free fatty acid content of 1% and mole ratio of methanol was 2, concentration of free fatty acid in reaction mixture increased over the initial feed free fatty acid content for all kind of catalysts used. Although SCX catalyst was added into reaction mixture which had 1% of initial feed fatty acid content, final conversion was hardly raised by mole ratio of methanol.

쌀겨오일의 안티폴루션 화장품 소재로써의 응용 (Application of Oryza sativa (Rice) Bran Oil as an Anti-pollution Cosmetic Material)

  • 강해란;정소영;허효진;차병선;;이소민;여혜림;유경완;곽준수;곽병문;이미기;빈범호
    • 대한화장품학회지
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    • 제47권3호
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    • pp.237-245
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    • 2021
  • 미세먼지와 초미세먼지는 일반적으로 사람 머리카락의 두께에 비하여 각각 1/6 ~ 1/7, 1/20 ~ 1/30 정도로 매우 작은 부유성 먼지를 뜻하며, 다양한 종류의 중금속 이온이 내포되어 있다. 호흡뿐 아니라 피부의 모공 틈새를 통해서 유입된 미세먼지는 체내 조직과 피부 건강에 문제를 유발할 수 있기 때문에 유입을 막거나 깨끗이 씻어내어 제거해야 한다. 본 연구를 통해 Oryza sativa (Rice) bran oil (OSBO, 쌀겨오일)을 이용하면 중금속 이온을 흡착하여 제거할 수 있을 것이라는 가능성을 확인하였다. 또한, 세포독성 실험을 통해 세포 생존율이 곡물 유래 성분과 비교했을 때에도 월등히 높아 외부 자극원에 대한 세포 보호 효과를 기대할 수 있다. COL1A1 mRNA의 발현량이 높아짐을 확인하였고, 이에 따라 미세먼지 속 중금속 이온에 의해 손실된 수분으로 유발될 수 있는 주름을 완화할 수 있을 것으로 사료된다. 이러한 실험 결과를 바탕으로 최종적으로 중금속 제거를 위한 워시-오프 제형의 OSBO 함유 화장품을 제시하고자 하였다.

혼합유(混合油)의 열산화(熱酸化)에 대(對)한 Tocopherol, 구연산 및 인산염(燐酸鹽)의 상승효과 (Synergistic Effect of Tocopherol, Citric Acid and Sodium Polyphosphate on the Thermal Oxidation of Blending Oil)

  • 장현기
    • 한국응용과학기술학회지
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    • 제7권1호
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    • pp.63-70
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    • 1990
  • Influence of mixing ratio of blending oil (rice bran oil : RBD palm olein = 1 : 1, 1 : 4 mixture: w/w) and natural tocopherol, citric acid, and sodium polyphosphate on enhancement of oxidation stability of blending oil under the condition of tap water infulx(1 ml/min/200g oil) were compared by AOM test after heating these system at l80$^{\circ}C$. In addition, the effects of tocopherol, and synergist on oxidition stability were also tested with potato chips fried with blending oil(1 : 4 mixture). The result obtained were as followes; 1. The test of RBD palm olein addition of 50% and 80% against rice bran oil on oxidation stability showed that the higher the palm olein contents in blending oil, the higher the oxidation stability. 2. The test of oxidation stability, adding l00ppm, 200ppm and 400ppm of natural tocopherol in two different types of blending oils, A(1 : 1 mixture) and B(1 : 4 mixture), disclosed that blending oil B was more positively effective, and this trend was superior at 200ppm level particularly, Furthermore, oxidation stability was enhanced remarkably upon addition of 100ppm of natural tocopherol, and 50ppm of citric acid together with 50ppm, 100ppm and 200ppm of sodium polyphosphate in general. Especially, 200ppm of sodium polyphosphate addition induced the most synergetic effect on oxidation stability showing as much as 3 times compare to control. 3. The results of oxidation stability obtained by peroxide value on potato chips fried with blending oil (1:4 mixture} added tocopherol, citric acid and sodium polyphosphate and preserved at $60^{\circ}C$ revealed that addition of tocopherol and 50ppm of citric acid together with 200ppm of sodium polyphosphate treatment was the most synergistic coinciding with AOM test results.

시판 튀김유지의 변패도 조사 (Chemical Values Related to Rancidity of Deep-frying oils)

  • 최한영
    • 환경위생공학
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    • 제4권1호
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    • pp.29-36
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    • 1989
  • The purpose of this investigation was performed for chemical values related to rancidity of fat and oils extracted from deep-frying food in Seoul. The samples were collected according to kinds of fat and oils, sampling sites and food stuffs for frying. The results were as follows 1. The most used frying oils were rice bran oil $(37.0\%)$ and shortening $(29.6\%)$, followed by rapeseed oil $(14.8\%)$. 2. The chemical values related to rancidity of fat and oils extracted from deep-frying foods were the next on average. Acid value-1.42, peoxide value-39.82, dinitrophenyl hydrazine value-16.73 thiobarbituric acid value-0.263. However the highest value among oils was showed in rice bran oil and the lowest value was shortening. 3. For the classification of sampling sites, acid value and peroxide value of samples of the markets were found higher than them of environs of school and roadside, and the differences between them were significant (P> 0.01), while dinitrophenyl hydrazine value and thiobar bituric acid value were not showed the significant differences. 4. For the classification of foodstuffs for frying, there were not recognized significant differences among all kinds of them.

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현미유가 생쥐의 골수로부터 M2로 유도한 대식세포의 미토콘드리아 호흡에 미치는 영향 (Effects of Dietary Rice Bran Oil on Mitochondrial Respiration in M2-induced Bone Marrow-derived Macrophages)

  • 이소정;김우기
    • 산업식품공학
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    • 제22권4호
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    • pp.353-357
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    • 2018
  • Previous studies have suggested that rice bran oil (RBO), an edible oil from the byproducts of rice milling, has anti-inflammatory effects in inflammation inducing macrophages, known as M1 subsets. Yet the effects of RBO on the counterpart M2 subsets, the "healing" macrophages, were poorly investigated to date. In this regard, recent studies on the molecular/cellular anti-inflammatory mechanisms of dietary components have demonstrated that mitochondrial respiration contributes to macrophage functioning. Therefore, the current study examined whether RBO regulates cytokine secretion by modulating mitochondrial metabolism in wound healing M2 subsets. Palm oil (PO), enriched with medium-chain fatty acids, served as a positive control. C57BL/6 mice were fed a diet containing either corn oil (CO), PO or RBO for 4 weeks, followed by purification of bone marrow-derived macrophages (BMDM) from their tibias and femurs. Cells were further polarized to M2-BMDM, and the expression of M2 marker (CD206) on cellular surfaces were not affected by dietary intervention. In addition, the secretion of anti-inflammatory cytokine (IL-10) in the culture supernatant was not affected by dietary lipids. Oxygen consumption rate, the indicator of mitochondrial respiration in M2-BMDM was not regulated by RBO intervention and PO treatment. Taken together, this study imply that RBO did not intervene both the regulation of inflammatory responses and mitochondrial respiration in M2 macrophages.

초미세분쇄/공기분급을 이용한 탈지미강 분획의 특성과 응용 (Microparticulation/Air Classification of Rice Bran: Characteristics and Application)

  • 박동준;구경형;목철균
    • 한국식품과학회지
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    • 제25권6호
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    • pp.769-774
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    • 1993
  • Fluidized bed opposed jet mill을 사용하여 초미세분쇄한 후 Turboplex classifier로 공기분급한 탈지미강분말의 입도는 air classifying wheel speed (ACWS)가 낮아짐에 따라 입자의 크기와 표준편차는 증가하고 단위부피당 표면적은 감소하였다. ACWS 21,000rpm에서 분급한 미강분말의 형태는 구형이었으며 입도 median이 $3.7{\mu}m$이었다. ACWS별로 회수된 시료의 단백질, 지방, 회분은 ACWS에 따라 전반적으로 증가하는 경향이었다. Mg, Zn, Fe 및 Mn 함량은 ACWS가 증가할수록 비교적 증가하는 경향을 보였으며, phytic acid함량은 중간 ACWS에서 약간 높은 값을 보였다. 식이섬유함량은 $25.2{\sim}31.5%$의 값을 보였고, ACWS 15,000rpm에서 최대값을 나타내었다. ACWS에 따른 시료의 색도는 ACWS가 높을수록 백색도(L)가 증가하였고, 적색도(a)와 황색도(B)는 감소하는 경향을 나타내었다. 보수력(WHC)은 12,000rpm에서 2.88g/g solid로 가장 높았고 ACWS가 높아짐에 따라 감소하는 추세를 보였으나, 보유력은 반대로 ACWS에 따라 약간 증가하는 경향을 보였다. 분급된 미강분말 현탁액의 유동특성은 Bingham body에 속하였으며 농도와 ACWS가 증가함에 따라 항복응력 및 점도가 상승하였다. 분급된 미강분말을 5% 수준으로 대체하여 케이크를 제조한 경우 대조구보다 케이크의 높이와 부피가 증가하였다.

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Effect of Agro-ecological Zones, Farm Category and Season on Feeds and Feeding of Large Ruminants in Rural Bangladesh

  • Islam, M.R.;Rahman, M.M.;Rahman, M. Mahbubur;Zaman, M.A.
    • Asian-Australasian Journal of Animal Sciences
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    • 제15권5호
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    • pp.643-649
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    • 2002
  • Availability of feeds and fodder and amount of their intake by large ruminants in eight different agro-ecological zones (AEZ) of Bangladesh were recorded over a year. Roughages such as straw, naturally grown green grass, water hyacinth, tree leaves, legumes and sugarcane tops were the major feedstuffs fed to the large ruminants. Amount of intake of these ingredients differed (p<0.01) across AEZ studied, but did not differ across seasons or farmers' categories (p>0.05) except for green grasses (p<0.01). Byproduct concentrates offered to animals in the studied areas were rice bran, wheat bran and different oil cakes. The amount of intake of concentrates by the animals also differed (p<0.01) across AEZs, but did not differ across seasons or farmers' categories (p>0.05), except for rice bran and wheat bran which differed between season and farm category, and season respectively (p<0.01). The large standard errors of mean indicate that there are wide variations in intake of roughages and concentrates across AEZ's, seasons and farmers' categories and even across days. This further indicates that the feeding practices of large ruminants are largely heterogeneous. In addition to feeding roughage and concentrates, the animals were allowed to graze for six hours a day. Grazing hours also differed (p<0.01) across AEZ, but not by farmers' categories or seasons.

알칼리 정제(精製)와 에스테르화에 의한 미강유의 열안정성(熱安定性)의 비교(比較) (Comparison of Thermal Stability of Alkali Refined and Esterified Rice Bran Oils)

  • 김현구;신동화;신효선
    • 한국식품과학회지
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    • 제17권3호
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    • pp.180-185
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    • 1985
  • 알칼리 처리와 글리세린으로 에스테르화 반응을 시킨 탈산공정에 의하여 정제한 각 미강유의 열안정성을 비교하였다. 가열중 산 값의 변화는 알칼리정제 미강유에서는 가열시간에 따라서 증가하였으나, 글리세린처리 미강유의 일부는 완만한 증가추세를, 또 일부는 가열시간이 경과함에 따라서 산 값이 감소하였다. 과산화물 값의 변화는 가열중 증가와 감소의 반복추세를 나타냈으며 알칼리 정제 미강유와 글리세린처리 미강유의 과산화물 값이 13.3 mgq/kg하였다. TBA값의 변화는 가열 10시간까지 급격하게 증가하고 그후 완만한 감소추세를 나타낸다. 가열중 글리세린처리 미강유는 착색현상이 심하였다. 알칼리정제 미강유와 글리세린 미강유의 90시간 가열 후 TG의 감소율은 $150^{\circ}C$에서는 처리방법에 따라 큰 차이가 없었으나, $150^{\circ}C$에서는 글리세린처리미강유가 알칼리정제 미강유보다 TC의 감소율이 약 2${\sim}$7% 높았다. AOM 시험에서 알칼리 정제미강유는 글리세린처리미강유보다 약 2배의 산화 안정성이 있었다.

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