• 제목/요약/키워드: rapeseed

검색결과 336건 처리시간 0.02초

Transesterification of Vegetable Oils in Pulsed-Corona Plasma Discharge Process

  • Hyun, Young-Jin;Mok, Young-Sun;Jang, Doo-Il
    • 한국응용과학기술학회지
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    • 제29권1호
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    • pp.81-87
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    • 2012
  • The biodiesel production characteristics in a pulsed-corona plasma reactor has been investigated through parametric tests. Transesterification of rapeseed oil together with camelina oil was done with the change of such variables as voltage of power, molar ratio, KOH catalyst and temperature. The energetic electrons emitted from pulsed-corona plasma has contributed to the enhancement of yield on rapeseed oil in short time (15 min). The higher yield on camelina oil was observed in 5 min. The optimal parameters were shown as the voltage of 23 kV, the molar ratio of 5/1, the content of KOH catalyst of 0.6 wt% and the temperature of $28^{\circ}C$ under the rotating rate of spark gap of 900 rpm.

품종별 유채박 단백질의 추출에 관한연구 (Studies on the Extraction of Rapesedd Protein from Some Species)

  • 강동섭;이장순;강영주
    • 한국식품영양과학회지
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    • 제19권4호
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    • pp.315-320
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    • 1990
  • Studies on protein and antinutritional factors of rapeseeds are ncessary for effective utiliza-tion of defatted rapeseed meal. Proteins were extracted from seeds of several species of rape-seeds and analyzed by SDS-PAGE and the contents of glucosinolate and phytate were determi-ned. One percent solution extraction and extraction yield was relatively higherfor B. campestris and B. juncea than for other species. SDS-PAGE revealed that rapeseeds of most species were rich in low molecular weight proteins and that in particular the roteins of B. napus var. Halla and B. juncea were composed of simpler subunits as compared with other species. The content of glucosinolate was around 10mg/g of defatted meal for B. juncea however for var. Halla it was 7.26mg/g of defatted meal and 0.46mg/g of protein concentrate which were the lowest values. The level of phytate was between 2.7 and 4.6% for all species tested. Our results indicate thT B, napus var. Halla is the desired species for the utilization of rapeseed proteins.

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Effects of Supplementary Chinese Milk Vetch Silage and Rapeseed Meal on the Performance and Rumen Fermentation of Lambs Given Ammoniated Rice Straw Based Diet

  • Wu, Yueming;Liu, Jian Xin;Chen, Zhenming
    • Asian-Australasian Journal of Animal Sciences
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    • 제11권4호
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    • pp.455-461
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    • 1998
  • This study was proposed to investigate effects of inclusion of Chinese milk vetch silage (MVS) and rapeseed meal (RSM) on the growth and rumen fermentation of Hu-sheep. Fifty weanling lambs were randomly divided into five equal groups and offered ammoniated rice straw (ABRS) ad libitum along with 100 g concentrate (Trial 1). The animals in $T_0$, $T_1$, $T_2$, $T_3$ and $T_4$ group were respectively supplemented with MVS at levels of 0, 0, 7, 14 or 21% and with RSM at levels of 0, 15, 10, 5 or 0%. Daily gain of lambs was significantly (p<0.05) higher in $T_1$, $T_2$ and $T_3$ group than that in $T_0$ and $T_4$ group. Feed conversion ratio was greatly reduced in supplemented groups as compared with $T_0$ group. In trial 2, five sheep with rumen cannulae were used in a $5{\times}5$ Latin square design. The experimental treatments were as described in Trial 1, but without concentrate. The intake of AVRS was significantly (p<0.05) lower in $T_4$ group than that in $T_0$ group, and also significantly (p<0.05) lower than those in $T_1$ and $T_2$ group. Little difference among all treatments was found in 48h DM degradability of ABRS, MVS and RSM, and in rumen pH value and microbial protein concentration. Rumen concentrations of individual and total VFA tended to be higher in supplemented groups than those in $T_0$ group.These rusults suggest that supplementation with RSM or RSM plus MVS can effectively improve the performance of lambs, and may fail to influence markedly the rumen digestion of ABRS and rumen environments.

Various levels of rapeseed meal in weaning pig diets from weaning to finishing periods

  • Do, Sung Ho;Kim, Byeong Ock;Fang, Lin Hu;You, Dong Hyeon;Hong, Jin su;Kim, Yoo Yong
    • Asian-Australasian Journal of Animal Sciences
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    • 제30권9호
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    • pp.1292-1302
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    • 2017
  • Objective: This experiment was conducted to investigate the influence of rapeseed meal (RSM) supplementation in weaning pig diet on growth performance, blood profile, carcass characteristics and economic analysis on weaning to finishing pigs. Methods: A total of 120 cross bred ([Yorkshire${\times}$Landrace]${\times}$Duroc) weaning pigs were allotted to 5 treatments in a randomized complete block design. Each treatment had 4 replications with 6 pigs per pen. Five different levels of RSM (0%, 2%, 4%, 6%, and 8%) were used as dietary treatments. Results: Overall, no treatment showed significant differences in growth performance with increased dietary RSM levels. The concentration of blood urea nitrogen (BUN) decreased as dietary RSM levels increased in 6 weeks (linear response, p<0.01). Total cholesterol, high density lipoprotein cholesterol, low density lipoprotein cholesterol, triiodothyronine, and thyroxine showed no significant differences, neither were there any significant differences in the immune response (IgG and IgA). As the dietary RSM levels of weaning pig diet were increased, no differences were found among dietary treatments upon performing proximate analyses of the pork after finishing. The influence of RSM supplementation on nutrient digestibility and nitrogen retention were not affected by dietary RSM levels either. With increased dietary RSM levels in the weaning pig diet, no differences among dietary treatments were found after performing proximate analyses of the pork's physiochemical properties. In addition, there were no significant differences observed in pork colors, pH levels, and economic benefits. Conclusion: Consequently, this experiment demonstrated that weaning pig's diet containing RSM influenced BUN concentration, but there were no detrimental effects on the growth performance of weaning pigs with up to 8% RSM in the diet.

Effects of Replacing Soybean Meal with Fermented Rapeseed Meal on Performance, Serum Biochemical Variables and Intestinal Morphology of Broilers

  • Xu, F.Z.;Zeng, X.G.;Ding, X.L.
    • Asian-Australasian Journal of Animal Sciences
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    • 제25권12호
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    • pp.1734-1741
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    • 2012
  • This trial was performed to study the effects of replacing soybean meal (SBM) with fermented rapeseed meal (RSM) on growth performance, serum biochemistry variable and intestinal morphology of broilers. A total of 640 d-old Arbor Acres broiler chicks were randomly allocated to 4 dietary treatments, 4 pens per treatment and 40 birds per pen for a 6-wk feeding trial. In the four treatment groups, fermented RSM replaced soybean meal at 0, 5, 10, and 15%, respectively. On 21 d and 42 d, two birds from each pen were randomly selected and slaughtered. Blood samples and sections of duodenum, jejunum, and ileum were collected for measurement of serum biochemical variables and intestinal morphology, respectively. Results showed that body weight gain (BWG) and feed conversion (FC) were significantly (p<0.01) poorer for birds fed the 15% fermented RSM diet than those fed with 0, 5 and 10% fermented RSM diets during all periods. Compared with 0 and 5% fermented RSM groups, IgG content in the serum of birds in 10 and 15% fermented RSM groups was improved (p<0.01) urea nitrogen content of serum was reduced (p<0.01) during both growing and finishing periods. However, IgM, phosphorus and calcium levels increased (p<0.05) only during the growing period. Increased (p<0.05) villus height was observed in the duodenum and jejunum of broilers fed the diet with 10% fermented RSM. In addition, villus height to crypt depth ratio in the jejunum was significantly higher (p<0.01) for birds fed the diet with 10% fermented RSM than for those fed diets with 0, 5 and 15% fermented RSM. The present results suggest that RSM fermented with Lactobacillus fermentum and Bacillus subtilis is a promising alternative protein source and that it could be safely used replace up to 10% SBM in broiler diets.

EFFICIENCY OF PROTEIN UTILIZATION OF FORMALDEHYDE TREATED RAPESEED MEAL BY SHEEP AND ITS INFLUENCE ON CATTLE'S PERFORMANCE

  • Liu, J.X.;Wu, Y.M.;Xu, N.Y.;Wu, Z.W.
    • Asian-Australasian Journal of Animal Sciences
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    • 제6권4호
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    • pp.601-605
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    • 1993
  • This study was purposed to investigate the efficiency of protein utilization of rapeseed meal (RSM) and formaldehyde-treated RSM (TRSM) by sheep, and their influence on performance of growing heifers. Experiment 1 was conducted according to a double $3{\times}3$ Latin square design involving sex yearling Hu Sheep and three experimental diets. All diets contained 600 g ammoniated rice straw and 200 g concentrate mixture. Three dietary treatments were: (1) 100 g RSM + 40 g soybean meal (URUS), (2) 100 g TRSM + 40 g soybean meal (TRUS) and (3) 100 g TRSM + 40 g treated soybean meal (TRTS). Apparent nitrogen digestibility was significantly higher for diet TRUS than that for URUS or TRTS (p<0.05), but with no significant difference between URUS and TRTS (p>0.05). Proportion of nitrogen retention (NR) to the digestible nitrogen intake for diet TRUS and TRTS was 25.57 (p<0.05) and 23.44% (p<0.05) higher than that for URUS respectively. As a result, proportion of NR to nitrogen intake for diet TRUS and TRTS was 34.74 (p<0.05) and 23.78% (p<0.05) higher than that for URUS respectively. Experiment 2 was conducted with 59 Holstein heifers. They were 12-20 months of age at the start of the trial. The experiment was a $2{\times}2$ factorial trial in which the heifers were given the ammoniated rice straw ad libitum and 1.5 kg hay, and supplemented with either RSM or TRSM at a daily allowance of 1.2 or 1.8 kg per day. The live weight gains for heifers receiving 1.2 and 1.8 kg/d of RSM or TRSM were 0.491 and 0.556 or 0.564 and 0.665 kg/d, respectively. The results suggest that formaldehyde treatment can effectively improve the efficiency of protein utilization of rapessed meal and cattle's performance.

각종 탈검제에 의한 식물성 기름의 탈검효과 (Degumming Effect on Vegetable oil of Degumming agent)

  • 김덕숙;안명수
    • 한국식품조리과학회지
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    • 제4권1호
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    • pp.27-32
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    • 1988
  • 탈검제로 인산 및 초산, 구연산, 수산, 질산, 붕산 등 6종을 평지씨 기름과 대두유에 적용시킨 결과 수산을 사용하여 인산과 거의 동일한 탈검 효과를 얻을 수 있었다. 즉, 평지씨 기름에서 85% 인산 처리군과 5.10% 수산 처리군의 탄산유내의 잔류 비누물질과 인함량, 탈색유에서의 색상, 탈취유의 과산화물값, trans 지방산 함량 등은 유사한 결과를 나타내었다. 대두유에서도 동일한 결과를 얻었으므로 탈검제로서 인산 대신 수산을 사용할 수 있음을 확인하였다. 한편 85% 인산처리군과 10% 수산처리군으로부터 얻어진 폐수를 분석한 결과 특히 BOD, COD 등에서 현격한 차이를 보였으며 침전분리 및 화학처리한 결과 인산 처리군은 수산 처리군에 비하여 처리시약 요구량 및 처리시간이 각각 3배, 1.7배로 차이가 극심하였다. 따라서 이들 식물성 기름에서 인산대신 수산을 사용하여 동일한 탈검효과를 얻을 수 있었을 뿐만 아니라 폐수 처리도 개선할 수 있었다.

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