• Title/Summary/Keyword: Agriculture and Fisheries

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Effect of Homogenization on Suspension Stability of Makgeolli (균질 처리가 막걸리 고형분의 현탁 안정성에 미치는 영향)

  • Shin, J.Y.;Kang, C.S.;Choi, H.S.
    • Journal of Practical Agriculture & Fisheries Research
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    • v.23 no.2
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    • pp.33-41
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    • 2021
  • The effect of homogenization treatment on the suspension stability of makgeolli was evaluated. The non-soluble solids of makgeolli that were not homogenized were precipitated at 1.0-68 mm after 10 minutes of standing and 2.0-70.5 mm after 30 minutes of standing. On the other hand, in the makgeolli homogenized with a blender for more than 20 seconds, no precipitated non-soluble solids were observed during the initial 10 minutes, and when it was left still for 30 minutes, it showed precipitation of 2.0 mm (control 58.0 mm). The makgeolli treated with a high-pressure homogenizer did not show any sedimentation until 30 minutes of standing. In the sensory evaluation, the high-pressure homogenized makgeolli had a score of 3.93, whereas non-treated had a score of 2.80, which was improved by 40% by homogenization.

Characteristics Of Persimmon Makgeolli Based On The Amount Of Water And Persimmon Juice Added (감 착즙액 첨가량과 가수량에 따른 감막걸리의 특성)

  • Ye Seul Kwon;Yejin Seo;Juyeon Kang;Hyun Jin Choi;Han-Seok Choi
    • Journal of Practical Agriculture & Fisheries Research
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    • v.25 no.4
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    • pp.158-164
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    • 2024
  • With the steady growth in the scale of the domestic traditional liquor industry, the interest in makgeolli has also been increasing. As the demand for makgeolli increases, interest in manufacturing differentiated makgeolli by adding additional raw materials such as fruits is increasing. In this study, makgeolli with low storage persimmon juice was manufactured, and the sweet taste of persimmon was imparted without adding sweeteners. Unsweetened, high-quality persimmon makgeolli with an alcohol content of 15% or more was manufactured and its quality characteristics were analyzed. Yeast was selected after producing fermented yeast by treating domestic isolated yeast and commercial yeast. Upon producing fermented yeast, persimmon makgeolli was manufactured by varying the amount of persimmon juice added to the fermented yeast. As a result of analyzing the quality characteristics of persimmon makgeolli, the pH was 4.02-4.25, the total acid (citric acid, %) was 0.30-0.43, the amino acidity (glycine, %) range was 0.05-0.15, and the alcohol content (%) was 15.64-18.48.(p<0.05). Reducing sugar (%) was 1.82-12.68 and total sugar (%) was 1.41-10.42, exhibiting a tendency to increase as the amount of reducing sugar and total sugar and the amount of juice added increased (p<0.05). Considering the sensory characteristics, a sample with 50% persimmon juice added showed a significantly higher residual sugar content, and the residual sugar content had a positive effect on the sensory characteristics. Therefore, 50% persimmon juice was added when making persimmon makgeolli. It is suitable for high-quality, non-sweetened persimmon makgeolli that preserves the taste of persimmon, which suits the consumers'taste.

A Study on the Sensibility Analysis of School Life and the Will to Farming of Students at Korea National College of Agricultural and Fisheries (한국농수산대학 재학생의 학교생활 감성 분석 및 영농의지에 관한 연구)

  • Joo, J.S.;Lee, S.Y.;Kim, J.S.;Shin, Y.K.;Park, N.B.
    • Journal of Practical Agriculture & Fisheries Research
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    • v.21 no.2
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    • pp.103-114
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    • 2019
  • In this study we examined the preferences of college life factors for students at Korea National College of Agriculture and Fisheries(KNCAF). Analytical techniques of unstructured data used opinion mining and text mining techniques, and the results of text mining were visualized as word cloud. And those results were used for statistical analysis of the students' willingness to farm after graduation. The items of the favorable survey consisted of 10 items in 5 areas including university image, self-capacity, dormitory, education system, and future vision. After classifying the emotions of positive and negative in the collected questionnaire, a dictionary of positive and negative was created to evaluate the preference. The items of 'college image' at the time of university support, 'self after 10 years' after graduation, 'self-capacity' and 'present KNCAF' showed high positive emotion. On the other hand, positive emotion was low in the items of 'college dormitory', 'educational course', 'long-term field practice' and 'future of Korean agriculture'. In the cross-analysis of the difference in the will to farming according to gender, farming base, and entrance motivation, the will to farm according to gender and entrance motivation showed statistically significant results, but it was not significant in farming base. Also in binary logistic regression analysis on the will to farming, the statistically significant variable was found to be 'motivation for admission'

Growth Characteristics of Zelkova serrata Seedlings as Affected by Mixed Nursery Soil (상토의 조성에 따른 느티나무 묘목의 생육특성)

  • Lee, U.Y.;Youn, K.K.;Shim, Y.J.;Lee, EJ.;Lee, K.C.
    • Journal of Practical Agriculture & Fisheries Research
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    • v.22 no.2
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    • pp.17-22
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    • 2020
  • This study was conducted to find out the optimum composition of nursery soil for raising seedling of Zelkova serrata. The treatments were regulated with the three different soil types : full peat moss(PM 100%), peat moss + perlite + vermiculite(1:1:1), peat moss + perlite + vermiculite(1:2:1). The full peat moss(PM 100%) showed the highest photosynthetic activity such as maximum photosynthesis rate(PN max), water use efficiency(WUE), Fv/Fm, PIabs and SPAD value. And also, full peat moss(PM 100%) showed relatively better growth performances. As a result of surveying the whole experiment, full peat moss(PM 100%) soil increases growth performances and enhances overall quality.

Integration Scheme for Agricultural Governance of South and North Korea After Unification (통일 이후 남북한 농업관리조직 통합방안)

  • Youn Sang Choi;Yong Kwang Shin
    • Journal of Practical Agriculture & Fisheries Research
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    • v.25 no.2
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    • pp.20-29
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    • 2023
  • This study suggests integration scheme for agricultural governance of South and North Korea after unification by comparing and analyzing their current agricultural governance, assuming drastic changes of economic system in integration process after unification. The North Korea's critical food shortage will force reformation of its agricultural governance to be the top priority in integration process after unification. The agricultural governance of South and North Korea has comparable structures. However, the North Korea's agricultural governance is extremely inefficient because it is established for political purposes. The integration scheme suggested includes expansion of Rural Development Administration, integration of research institutes, establishment of branch of Korea National University of Agriculture and Fisheries, transformation of existing North Korea's organization into South Korea's system and preparation of training programs for North Korea's officials.