• Journal of Biosystems Engineering
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• 제30권3호
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• pp.141-146
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• 2005

Worldwide consumption of vegetable soybean has been increasing recently, but, in the process of vegetable soybean production threshing and seperation work accounts for about $80\%$ of overall labor. Therefore, developing of the vegetable soybean thresher is necessary to reduce the cost of labor. The main objective of this study is to develop the vegetable soybean thresher which is suitable for domestic circumstances. The threshing and separating performance, operating cost, and field capacity of developed vegetable soybean thresher are investigated and analysed. The results are as follows. The effective field capacity of the developed vegetable soybean thresher was shown as 4.8hr/10a, and reduced as much as 11.7 times compared with human labor. The ratio of unthreshed soybean-pod to stem after threshing work was shown as $1.5\%$ and the damaged pod ratio of detached soybean was shown as $1.8\%$. The cost of human labor was shown as 2,560,000 won/ha, but the operating of the developed vegetable soybean thresher was shown as 503,000won/ha. If the vegetable soybean thresher would be used in our farm, the minimum cultivation area appeard to be 22.7a for the cost effective management.

• Journal of Biosystems Engineering
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• 제29권5호
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• pp.433-440
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• 2004

Worldwide consumption of vegetable soybean has been increasing recently, but in the process of vegetable soybean production, threshing and separation work accounts fur about $80\%$ of overall labor. Therefore, developing of the vegetable soybean thresher is necessary to reduce the cost of labor. The main objective of this study is to acquire the basic in-formations for design of the vegetable soybean thresher which is suitable for domestic circumstances. We made the experimental system to investigate the threshing and separating performance at the several speeds of threshing cylinder and separating blower according to the kinds of threshing tooth. The result are as follows; Threshing performance of vegetable soybean thresher was shown as the best in case the threshing tooth made of rubber which has the 80 of Shore hardness was used at the circumference speed of cylinder of 5.8$\~$8.1m/s. Also separating cleaning performance of vegetable soybean thresher was shown as the best at more than 1,300 rpm of blower speed and $60\~80\%$ of opening ratio of suction port.

• Current Research on Agriculture and Life Sciences
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• 제21권
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• pp.23-29
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• 2003

Worldwide consumption of vegetable soybean bas been increasing recently, hence it is necessary to produce good quality of soybean in our farms. In the process of vegetable soybean production threshing and seperation work accounts for about 80% of overall labor. Therefore, developing of the vegetable soybean thresher is necessary to reduce the cost of labor. The purpose of this study is to acquire the basic informations to design of the vegetable soybeans-thresher. We make the experimental system which measure the physical properties and investigate the detachment forces. Also, We calculated the minimum speed of threshing cylinder. The result are as follows; 1. The average length of soybean stem is 68.2cm. 2. The length of soybean pods are seen as 61.3mm for 3 grain, 52.6mm fer 2 grains and 41.0mm fer 1 grain 3. The widths of soybean pods are seen as 14.1mm fer 3 grain, 13.8mm fer 2 grains and 13.4mm fer 1 grain. 4. The weights of soybean pods are seen as 4.1grams for 3 grains, 2.7grams for 2 grains and 1.4grams for 1 grain. 5. The average detachment forces of pods are seen as 1.5kgf for 3 grains, 1.2kgf for 2 grains and 0.8kgf for 1 grain respectively For 1 grain, the detachment force of pods ranges from 0.2kgf to 1.4kgf. For 2 grains, the minimum detachment force of pods is seen as 0.6kgf and the maximum one is seen as 2.5kgf. For 3 grains, the minimum detachment force of pods is seen as 0.7kgf and the maximum one is seen as 2.7kgf. 6. The minimum speed of threshing cylinder is shown 6.83m/s.

• 한국환경과학회지
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• 제13권1호
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• pp.79-87
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• 2004

Esterification of soybean oil with methanol was investigated. First of all, liquid-liquid equilibriums for systems of soybean oil and methanol were measured at temperatures ranging from 40 to 65$^{\circ}C$. Profiles of conversion of soybean oil with time were determined from the glycerine content in reaction mixtures for the different kinds of catalysts, such as NaOH, CaO, Ca(OH)$_2$, MgO, Mg(OH)$_2$, and Ba(OH)$_2$. The effects of dose of catalyst, cosolvent and reaction temperature on final conversion were examined. Esterification of waste vegetable oil with methanol was investigated and compared to the case of soybean oil. Solubility of methanol in soybean oil was substantially greater than that of soybean oil in methanol. When the esterification reaction of soybean oil was catalyzed by solid catalyst, final conversion was strongly dependent on the alkalinity of the solid catalyst, and increased with the alkalinity of the metal. Hydroxides from the alkali metals were more effective than oxides. When Ca(OH)$_2$ was used for the esterification catalyst, maximum value of final conversion was measured at dose of 4％. When CHCl$_3$ as a cosolvent, was added into the reaction mixture of soybean oil which catalyzed by Ba(OH)$_2$, maximum value of final conversion was appeared at dose of 3％. When waste vegetable oil was catalyzed by NaOH and solid catalysts, high final conversion, over 90％, and fast reaction rate were obtained.

• 한국작물학회지
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• 제40권2호
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• pp.228-235
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• 1995

본 시험은 일본에서 도입된 풋콩용품종인 화엄풋콩과 석량풋콩과 우리나라에서 재배되고 있는 장류 및 두부용콩 품종인 장엽콩을 1992년 4월15일, 5월 15일 및 6월 15일에 파종하여 풋콩용품종과 우리나라 장류 및 두부용콩품종과의 생육, 수량 및 외관품질특성과 그 특성에 대한 파종기의 영향을 규명하여 콩 육종 및 재배의 기초자과를 얻고자 수행한 바 그 주요결과를 요약하면 다음과 같다. 1. 생육특성은 풋콩용품종인 화엄풋콩과, 석량풋콩이 장류 및 두부용콩인 장엽콩에 비하여 이생종으로서 내도복성이며 저협조밀도가 높게 보이고 유효저협절수비율이 높았다. 2. 10a당 풋콩수량은 풋콩용품종인 화엄풋콩과 석량풋콩이 장류 및 두부용콩인 장엽콩에 비하여 다소 낮으나 2∼3립협의 종품수량이 높았고 대립이었으며, 500a당 생조수, 생조장 및 폭으로 본 외관상 품질도 좋았다. 3. 풋콩용품종인 화엄풋콩과 석량풋콩은 4월15일 파종에서 생육이 양호하고 풋콩수량이가장 높았으며, 500a당 생조수는 적었고, 생조장 및 폭 이 길어져 외관상 품질이 향상되어 이기파종에서 수량과 품질이 유리하였다.

• 한국작물학회지
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• 제43권2호
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• pp.83-88
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• 1998

From the evaluation of physical properties such as springiness, gumminess, adhesiveness, chewiness and hardness by the texture analyzer, vegetable soybean lines with green seed-coat were best as compared with those with black, brown, mixed, and yellow seed-coats. A panel test evaluated on the basis of taste, sweetness, chewiness, and total scores also indicated that soybean lines with green seed-coat were the best. The total scores of panel test was decreased in the order of green > yellow> black> brown seed-coat colored soybean. The mean value of sucrose content obtained by HPLC analysis was highest in black seed-coat colored soybean, and followed by green, yellow, and brown soybeans. The highest sucrose content (8.22%) was observed in 180362, a soybean line with green seed-coat. The full-season type soybeans showed much higher sucrose content than summer types which are mainly cultivated on farmer's fields for vegetable purposes. The final 13 lines selected from 300 colored soybeans showed nearly the same panel scores as Miwongreen. However, these lines had a great deal of variation in sucrose content, and much higher readings in texture analysis than Miwongreen, especially in chewiness and hardness which were the most important properties in vegetable soybeans.

• 한국작물학회지
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• 제52권1호
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• pp.100-103
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• 2007

A field experiment was conducted in Agronomy farm at an altitude of 1350 m. above sea level in a randomized complete block design with three replications and eight treatments on vegetable type soybean in 2005. The objective was to see the effect of vermicompost alone and in combination with Rhizobium inoculum and mineral fertilizers on the yield of vegetable soybean. The result showed higher number of nodules from the non inoculated plot, however, the nodules weight was highest from the inoculated plots. No significant difference was notice statistically on roots and shoots dry weight. Soybean grain was obtained highest (32.3%) over the non inoculated plot followed by vermicompost plus inoculated, however, there was non significant difference. There was a slight increment on grain and straw yield from the inoculated plots over the non inoculated.

• 한국작물학회지
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• 제44권4호
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• pp.350-354
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• 1999

Soybean varieties derived from Korea are classified into four groups on the basis of their food types such as soybeans for vegetable, sprout, sauce and paste and soybeans with colored seed coat. This study was carried out to know the differences in storage protein concentrations among these four groups. There were differences in storage protein concentrations among four groups. In 7S protein, the $\alpha$'-and $\alpha$-subunit concentrations did not vary among four groups, while a $\beta$-subunit concentration greatly varied. 7S protein concentration was the highest(40.6%) in soybean for sauce and paste and the lowest(37.7%) in soybean for vegetable, while 11S protein concentration was the highest (62.3%) in soybean for vegetable and the lowest (59.4%) in soybean for sauce and paste. In view of the fact that 11S protein has much higher sulfur containing amino acids than 7S protein, it was shown the soybeans for vegetable may have higher nutrition value than other groups.

• 한국작물학회지
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• 제53권1호
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• pp.64-69
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• 2008

콩의 용도는 메주나 장류 또는 두부로 이용하는 장류콩, 나물로 이용하는 나물콩, 혼반용으로 이용할 수 있는 밥밑용으로 이용되어 왔으나, 최근에는 콩을 채소처럼 먹을 수 있는 풋콩에 대한 관심이 증대되고 있는 실정이다. 따라서 본 시험은 풋콩재배에 기초 자료를 제공하기 위하여 검정용 및 갈색콩 품종들의 풋콩재배시 가지풋콩의 상품성을 향상시키면서 풋콩수량을 증대시킬 수 있는 적정재식거리 구명을 위한 실험으로 그 결과를 요약하면 다음과 같다. 1. 재식거리는 파종으로부터 개화까지의 소요일수, 수확까지의 소요일수 및 도복에 영향을 주지 않았다. 2. 경장은 밀식할수록 증가한 반면 협수, 분지수, 개체당 협수, 분지당 협수, 경협중 및 2+3립협의 비율은 밀식할수록 감소하였다. 3. 풋콩의 크기는 재식밀도간 유의적인 차이는 없었으나, 풋콩의 수확지수는 밀식할수록 낮았다. 4. 밀식을 하면 풋콩의 수량은 증대하지만 경협중, 분지 당 협수 및 2+3립협의 풋콩수량을 고려한 가지풋콩으로의 상품성을 고려할 때 적정재식밀도는 선흑콩과 일품검정콩은 $60{\times}25\;cm$, 갈미콩은 $60{\times}35\;cm$이었다.

• 한국작물학회지
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• 제41권3호
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• pp.257-265
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• 1996

본 시험은 풋콩 채종기술의 기초자료를 얻고자 미카와시마, 화엄풋콩 및 석량풋콩의 3품종을 1992년 고냉지인 강원도 평창지역에서 생산된 종자와 일본 북해도에서 생산되어 1993년 춘계에 도입된 종자를, 1993년 4월 20일 수원 작물시험장에 채종하여 생육, 병해 및 수량들을 비교 검토한 바 그 주요 결과를 요약하면 다음과 같다. 1. 포장 출현율은 품종간에 차이가 있었고, 채종지간에는 국내고냉지 평창산 종자가 일본산 종자들보다 7% 정도 높았다. 2. 콩 생육경과중에 발생한 미이라병균에 의한 꼬투리 감염, 탄저병, 모자이크바이러스 및 노균병은 채종지간에 차이가 없었다. 3. 채종지간에 풋콩의 생육, 수량구성요소 및 수량성 차이가 없었다. 4. 이상의 결과로서 국내 고냉지에서 풋콩종자를 생산하면 일본산 도입종자에 비하여 출현율이 높고 생육과 수량면에서 저하되지 않는 양질종자의 생산이 가능하다.