• 신재생에너지
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• 제8권4호
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• pp.30-37
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• 2012

Biodiesel was produced by "transesterification" of vegetable oils and animal fats as an alternative to petroleum diesel. The research analysed the fuel characteristics of biodiesel, the yield of by-products and biodiesel, using several vegetable oils - rapeseed oil, camellia oil, peanut oil, sesame oil, perilla oil, palm oil, olive oil, soybean oil, sunflower oil and animal fats such as lard, tallow, and chicken fat. The results showed the yields of biodiesel made from the vegetable oils and animal fats were $90.8{\pm}1.4{\sim}96.4{\pm}0.9%$ and $84.9{\pm}1.1{\sim}89.6{\pm}1.5%$ respectively. Production rates and oxidation characteristics were different depending on the fats applied.

• 한국작물학회지
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• 제48권
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• pp.31-40
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• 2003

Phytoestrogens are oestrogenic compounds found in plants and consist of isoflavones, lignans, and coumestans. The structural similarity of phytoestrogens to endogenous oestrogens has promoted the hypothesis that phytoestrogens exert hormonal or anti-hormonal effects relevant to the risk of hormone-dependent disease and/or their suitability as a dietary alternative to hormone replacement therapy. Epidemiological studies suggest that food stuffs containing phytoestrogens may have a beneficial role in protecting against a number of chronic disease and conditions. It is thought that these estrogen-like compounds may protect against chronic diseases, such as hormone-dependent cancers, cardiovascular disease and osteoporosis. Furthermore, phytoestrogens are used as a natural alternative to hormone replacement therapy and to reduce menopausal symptoms. Phytoestrogens are considered good candidates for use in natural therapies and as chemopreventive agents in adults. However safe and efficacious levels have yet to be established.

• 한국작물학회지
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• 제50권6호
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• pp.411-414
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• 2005

초관높이와 도복저항성 차이가 있는 콩 두 품종의 교호재배가 광합성능력과 수량에 미치는 영향을 분석한 결과는 다음과 같았다. 1. 초관의 높이는 황금콩 1열+태광콩 1열에서 가장 높았으며, 도복은 황금콩 1열+태광콩 1열 및 황금콩 1열+태광콩 2열에서 경감 효과가 가장 컸다. 2. 교호재배에서 정엽 및 제 9본엽의 광합성능력은 태광콩열이 단일재배에 비하여 높았으며, 황금콩 정엽의 광합성능력은 낮았다. 3.수량은 황금콩 1열+태광콩 1열이 황금콩 단일재배에 비하여 $17\%$, 태광콩 단일재배에 비하여는 $8\%$증수되었다.

• 한국작물학회지
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• 제32권3호
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• pp.357-368
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• 1987

옥수수와 대두의 단작 및 교호재배시 각 작물 상호간의 교호비율에 따른 이들 작물의 초형구조와 건물 및 수량생산의 변화를 검토하고자 옥수수 단작, 옥수수와 대두의 교호비율이 각각 1 : 1, 1 : 2, 1 :3인 이랑 교호작, 그리고 대두단작의 5가지 재배 양식으로 시험을 진행한 결과는 다음과 같다. 1. 옥수수는 대두의 비율이 증가함에 따라 간장이 짧아지고 착수고가 낮아졌으며 줄기의 굵기는 굵어졌다. 대두는 옥수수의 비율이 증가함에 따라 경장이 길어지고 줄기가 가늘어졌으며 생장후기 도복의 정도가 심해 졌다. 2. 엽면적지수는 교호작에 의해 2∼8% 증가되었으며 지상부 건물중도 다소 늘어났다. 엽면적과 건물중의 수직분포는 교호재배시 중하부의 분포비율이 높아져 보다 고르게 분포되었다. 3. 대두의 비율이 높아질수록 엽중의 분포비율이 높아지고 엽이외 부분의 비율이 낮아졌다. T/R ratio는 단작보다 교호작에서, 교호작간에는 대두의 비율이 높아질수록 감소되어 식물체중에 근이 차지하는 비중이 높아졌다. 4. 식물체내 전질소량은 단작에 비하여 교호작에서 교호비율 및 시기에 따라 4∼22% 증가되었다. 그러나 부위별 함량은 뚜렷한 경향을 보이지 않았다. 5. 타 작물과의 교호비율이 높아짐에 따라 옥수수의 수량구성요소는 증가되었으나 대두의 수량구성요소는 감소되었다. 6. Land equivalent ratio(LER)은 교호재배시 0.96∼1.01로 단작 1.00과 차이 없었으나 예상수량에 대한 실제 수량의 비로 평가할 때, 총질소수량은 1.10∼1.25, 총건물수량은 1.07∼1.12, 그리고 총종실수량은 1. 17∼1.20으로 교호재배에 의해 수량생산성이 높아졌으며 옥수수와 대두의 1 : 1 교호작이 비교적 유망하였다.

• 농업과학연구
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• 제37권1호
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• pp.1-6
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• 2010

Allelopathic activity of rotation crop residues to common weeds and selectivity of crops were studied for developing an alternative weed control strategy in upland organic farming. All rotation crop residues with various ratios suppressed weed growth, but the growth of crop species stimulated a little when those were grown with the mixture of rotation crop residues except a few crop species. Among the rotation crop residues used in this study hairy vetch was the most effective, followed by Chinese milkvetch, barley and rye in suppression of weed growth. The 90:10 (crop:soil, v/v) treatments incorporation rate of crop residues such as hairy vetch and Chinese milkvetch suppressed completely the growth of all weed species tested in this study. The effect of crop residues on suppression of weed growth reduced to 90% when the incorporation rates decreased to 60% [60:40 (crop:soil, v/v). It was noticed that broadleaf weed species were more susceptible to rotation crop residues than grass weed species. In the influence of crop residues on the crop growth, no growth inhibition was found in red pepper, lettuce and perllia at any incorporation rates, but tomato, cucumber and corn were slightly inhibited in a few cases at their highest incorporation levels. This study demonstrated that rotation crop residues especially hairy vetch and Chinese milkvetch have high herbicidal effects against weeds without inhibiting the growth of crop species.

• 한국작물학회:학술대회논문집
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• 한국작물학회 2021년도 추계학술대회
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• pp.8-8
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• 2021

• 한국작물학회:학술대회논문집
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• 한국작물학회 2017년도 9th Asian Crop Science Association conference
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• pp.253-253
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• 2017

Recently, strong interest in the well-being and healthy food trends lead a spreading of rice processing products such as rice noodles, rice breads, and rice cakes. However, most of rice varieties developed in Korea showed very limited processing properties in processing of noodles compare to that of wheat flour. Moreover, low competitiveness as a raw processing materials due to high price give poor evaluations for rice noodles processing. To cope those barriers, 'Saemimyeon' a Tongil type high yielding variety with a high amylose contents was developed in RDA. 'Saemimyeon' showed about 10~32 % of increase in yield as 7.08MT/ha and 26.7% of high amylose contents together with easy grinding property of 65.7% of high chalkiness ratio. The both of milled as well as brown rice of 'Saemimyeon' were well fit for processing properties in rice pasta where the contents of rice flour for rice pasta was 99% (1% of Tapioka starch was intermixed in to the rice flour). A spaghetti type for wet noodles and macaroni type for dry noodles were developed, respectively. Each of pasta were showed relatively more or less an equal quality and panel test compare to that of durum wheat pasta products. Finally, rice pasta products could suggest an alternative idea for a new rice processing items where rice noodles market was stagnant.

• 한국식품영양학회지
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• 제36권6호
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• pp.572-580
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• 2023

Hypertension is characterized by excessive renin-angiotensin system activity, leading to blood vessel constriction. Several synthetic compounds have been developed to inhibit renin and angiotensin-converting enzyme (ACE). These drugs often have adverse side effects, driving the exploration of plant protein-derived peptides as alternative or supplementary treatments. This study assessed the phenolic compound and amino acid content and the antioxidant and antihypertensive activity of 5 South Korean staple crops. Sorghum had the highest phenolic compound content and exhibited the highest antioxidant activity. Millet grains, particularly finger millet (38.86%), showed higher antihypertensive activity than red beans (14.42%) and sorghum (17.16%). Finger millet was found to contain a large proportion of branched-chain, aromatic, and sulfur-containing amino acids, which are associated with ACE inhibition. In particular, cysteine content was positively correlated with ACE inhibition in the crops tested (r=0.696, p<0.01). This study confirmed that the amino acid composition was more correlated with the antihypertensive activity of grains than the phenolic compound content. Finger millet mainly contained amino acids, which have higher ACE inhibitory activity, resulting in the strongest antihypertensive activity. These findings underscore the antihypertensive potential of select crops as plant-based food ingredients, offering insight into their biological functions.

• 한국작물학회지
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• 제58권2호
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• pp.128-135
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• 2013

The use of agricultural by-products as alternative nutrient sources in crop production had gained popularity in order to reducing the rate of chemical fertilizer application in the field. This study was conducted to determine whether the application of rice milling by-products treated with yeast inoculants could substitute, or reduce the rate of chemical fertilizer application. The results of agronomic measurements showed that the effect of incorporated materials was not immediate, as compared to 100% chemical fertilizer application. However, grain yield and quality was either the same or greater than 100% chemical fertilizer application. It was found out that expanded rice hull (treated with yeast or not) could reduce the rate of applying chemical fertilizers by half. Also, yeast treatment was only favorable only to expanded rice hull and not with rice bran, and was already found to be a potential material in reducing chemical fertilizer application in rice production.

• 한국유기농업학회지
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• 제2권1호
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• pp.16-23
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• 1993

The traditional farming method has very long history in the process of agricultural development. The application of chemical fertilizers production became most popular to increase quantities of agricultural production. The United States of America is one of largest countries in the world. There are at present 50 States and farming conditions are very different from each individual States. There are increasing trend of agricultural production by applying chemical fertilizers as well as sprays during last 50 years(1940-90). The disadvantages of conventional farming method were to destroy nature and human life. There were some other kinds of disadvantages such as nitriated contamination in drinking water both for human being and animals. The alternative farming method is one of new farming method reducing and/of non-application of chemical fertilizers and sprays in agricultural production. There is less economic research on alternative farming system about $5.444 economic advatages in organic farms comparing commercial farms at the same area. There are advantage of higher unit price level in orgnic products, decreasing chemical costs as well as effect of crop combinations. It is certainly necessary to have more empirical research on economic and management of alternative farming method in the United States of America. However, if there is economic advantage in alternative farming methods, the future development possibility of alternative farming method can be very bright in vear future. There might be more advantages such as soil conservation, better quality of agricultural products, better health conditions of farmer's and consumer's as well as keeping healthy environment of rural and urban areas.