• 한국식품영양과학회지
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• 제34권4호
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• pp.567-571
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• 2005

레스베라트롤은 항암작용, 항혈전작용, 항산화작용 및 심혈관계질환의 발병을 낮추는작용이 있다고 보고되어 있다. 본 실험에서는 땅콩에 함유되어 있는 레스베라트롤의 함량을 증가시키기 위한 침지조건을 반응표면분석법을 이용하여 최적화하였다. 레스베라트롤의 함량에 영향을 미치는 요인으로는 침지 시 물의 양(농도), 침지시간 그리고 침지 후 건조시간을 검토하였으며, 실험결과 침지 시 물의 양(농도)은 $67.15\%$, 침지시간은 19.57 hr, 침지 후 건조시간은 65.56 hr으로 나타났다. 이 조건하에서 레스베라트롤은 $0.1\;{\mu}g/g$에서 $4.55\;{\mu}g/g$으로 약 45배 정도 증가함을 확인할 수 있었다. 레스베라트롤의 증가에 가장 큰 영향을 주는 요인으로는 침지시간이었으며 그 다음으로 침지 시 물의 양(농도)이 영향을 주었으며, 침지 후 건조시간은 별 영향을 주지 않았다. 본 실험의 이차 다항 회귀 곡선식에 대한 적합도를 결정 계수로 조사한 결과 높은 적합도를 나타내었으며, 분석 방법에 대한 검증에서도 그 결과가 우수하였다.

• 한국버섯학회지
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• 제18권1호
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• pp.115-119
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• 2020

느타리버섯 곤지7호의 수확 후 CO₂ 처리에 의한 품질 유지 효과 및 적정 처리 농도를 구명하고자 연구를 수행하였다. 수확한 버섯을 3℃에서 1일간 예냉 후에 CO₂ 농도 0, 30 및 50%에서 3시간 처리한 다음 20 ㎛ 두께 OPP필름 봉지에 밀봉하여 3℃에 21일 저장하였다. 30% CO₂ 처리에서 대조직의 경도가 저장 21일까지 높게 유지되었고, 대조직의 색은 명도(CIE L^⁎값)가 30% CO₂ 처리한 느타리버섯이 저장 14일, 21일에 높고 황색도(CIE b^⁎값)가 저장 2일, 7일에 낮게 나타났으며 외관품위가 저장 7일부터 저장기간 내내 대조구와 50% CO₂ 처리에 비해 높았으며 3℃ 저장 중 17일까지 느타리버섯 곤지7호의 상품성을 유지하였다. 30% CO₂ 농도로 3시간 처리가 느타리버섯 곤지7호의 저온저장 중 품질 유지기간을 연장할 수 있는 수확 후 처리방법으로 판단되었다.

• 한국포장학회지
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• 제20권1호
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• pp.17-24
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• 2014

국내 딸기는 영양학적으로 우수한 과실로 소비자들은 대부분 신선한 생과로 이용하지만, 유통 기간이 매우 짧고 경도가 약하며 곰팡이에 의한 부패가 쉽게 발생하여 선도유지에 어려움이 있다. 딸기의 주요 부패균인 Botrytis cinerea, Rhizopus stolonifer는 생존율이 높고 쉽게 전이되어 품질 저하가 심각한 수준으로 이의 성장을 제어하기 위하여 수확 후 예냉, 이산화탄소, 이산화염소 처리 등을 있으며, 포장 처리 방법으로 modified atmosphere 포장, 가식성 코팅, 고산소 포장, 산소 흡착제 등을 적용하여 유통기간 연장 및 품질 개선 효과를 가진다고 연구 보고되었다. 딸기는 1차 포장 형태인 PET 용기에 담아 이를 골판지 상자에 포장하여 국내 및 해외 유통에 주로 이용하며 주요 수출국은 홍콩, 싱가포르를 대상으로 해마다 수출국이 늘어나고 수출양이 증가하고 있다. 최근 수출 딸기의 유통 기간 연장을 위한 품질 개선 필요성에 따라 다양한 유통 과정에 적합한 수확후 선도 유지 처리 연구가 요구되고 있으며 상품성 부여를 위한 수출 대상국 소비자의 기호성에 맞춘 개선된 포장이 필요하다고 판단된다.

• 한국축산식품학회지
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• 제36권4호
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• pp.494-498
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• 2016

Cold plasma has been developed to reduce microbial contamination and to improve safety of food and medical products. In addition, the technology can be used in the manufacture of sausages without addition of nitrite. To be applied in food industry commercially, the new technology should be safe and efficient. However, toxicological test of plasma-treated food is limited. Therefore, the purpose of this study was to determine the mutagenicity and immune toxicity of the meat products cured with plasma-treated water (PTW) as a nitrite source. Emulsion sausages were prepared with no nitrite (control), sodium nitrite (SCS), and PTW (SCP). For a mutagenicity test, the Ames test was performed with the sausage samples. For immune toxicity test, 8-wk-old female Balb/c mice were given free access to the sausages in order to evaluate the tumor necrosis factor (TNF)-α level. As a result, no mutagenicity was detected in the sausages by the Ames test. The serum TNF-α values were less than 10 pg/mL in mice after feeding control and treated samples for 32 d, indicating that no inflammatory response was occurred by feeding the sausages made by PTW. Therefore, the present study opens the possibility of using plasma-treated water as a nitrite source without any toxicity.

• 한국식생활문화학회지
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• 제13권4호
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• pp.275-291
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• 1998

Food irradiation is an emerging technology which offers many advantages such as reduction of microorganisms, extension of shelf-life of foods, reduction in the use of post-harvest chemicals, and destruction of insects and parasites. The commercial utilization of food irradiation, however, has been restricted because of the uncertainty of consumers' responses to it. Because success of food irradiation in the marketplace will depend upon their acceptability by consumers, this study focused on the consumers' perception and acceptance toward food irradiation in order to get basic data for commercial utilization of food irradiation and give information to consumers to help rational consumption behavior. The survey with 411 respondents living in Youngnam area was conducted during the spring of 1997 by the questionnaires. The results and implications from this study are as follows. First, consumers' knowledge about food irradiation is scanty. Two-thirds of respondents in the survey had not heard of irradiated foods and many people confused irradiation with radioactivity. In the willingness to accept food irradiation, one-third of respondents showed a wait-and-see attitude. This result indicated consumers had insufficient information about the irradiation process and nationwide education of food irradiation technology should be undertaken. Second, although the purchase and use of food are very important consumption behaviors, consumer education by mass communication has been rarely done. For the successful commercialization of food irradiation, the information provision by mass communication for the consumers should be made. Third, consumers generally worried about residual pesticide and intended to purchase irradiated foods if radioactivity was not retained in the foods. Therefore, food irradiation could be an alternative method to the use of pesticide Fourth, consumers pointed out that they wanted to extend shelf-life of milk and dairy foods, fish and seafood and to irradiate these foods. Therefore, research for the safety of irradiated foods should be continually conducted. finally, labeling for irradiated foods is needed to provide the information and to further increase public understanding. Especially, the labeling should show the definite reason why irradiation is being used. In conclusion, recently, under the circumstances that the commercial utilization of food irradiation and irradiation for the import and export products have been increased in many countries, many efforts are needed to improve the quality of irradiated foods, and prove the safety of them in Korea. In addition, consumer education for food irradiation should be given to help consumers to make decision for food purchase and use.

• 한국식품저장유통학회지
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• 제24권2호
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• pp.159-167
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• 2017

고온기 결구상추의 선도유지 및 수급조절에 효과적인 포장조건을 구명하기 위하여 연구를 수행하였다. 수확 후 결구상추를 골판지 상자, 농산물 유통상자(P box), 개별 랩핑 등 세 가지 방법으로 포장한 후 $2^{\circ}C$에 저장하며 품질변화를 분석하였다. 그 결과 개별 랩핑 한 결구상추의 중량감소율이 다른 처리구보다 적었고, 저장 중 색변화 및 갈변도가 가장 낮았다. 또한 다른 포장방법에 비하여 개별 랩핑 한 결구상추의 엽록소 함량 및 경도 감소가 적었다. 총 페놀함량 및 DPPH 라디컬 소거능의 경우 저장 중 개별 랩핑 한 결구상추의 값이 높았으나 포장방법에 따른 차이는 적었다. 저장 중 결구상추의 외관은 개별 랩핑 하였을 때 가장 우수하였으며 반으로 절단하여 골판지 상자에 포장한 결구상추는 저장 14일부터 내부갈변이 발생하여 품질이 저하되기 시작하였다. 따라서 고온기 결구상추를 수확 후 개별 랩핑하여 $2^{\circ}C$에 저장할 경우 21일간 선도유지에 효과적이며 수급조절에도 도움을 줄 수 있으리라 판단된다.

• Current Research on Agriculture and Life Sciences
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• 제22권
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• pp.1-12
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• 2004

Pod-edible bean or snap bean is a fairly new crop to domestic farmers but the national demand is steadily increasing in recent years along with the development of western food business and change in dietary patterns. At the same time, much efforts are being made to export it to foreign country, mainly to Japan. The amount of seeds introduced from outside is also continuously increasing along with the enlargement of area planted for the crop. Hybridization breeding for the crop has already been started to supply the cheaper and better seeds which will reduce the seed costs and foster the higher income to the farmers. In this experiment, several technologies related with the production of quality seeds are preliminary investigated. Some of the results obtained are summarized as follows; 1. Highly significant interaction was recognized between planting dates and no. of pods per plant and no. of branches but no interaction between planting dates and plant height and no. of nodes on main stem. Days to maturity was proportionally reduced to later planting dates. 2. Rate of viviparous pods and seeds was gradually increased in later planting dates but rate of germination was increased in earlier planting dates with lower germination rate in white seed coat grains than in colored seed ones. 3. Seed yield was higher in the earlier planting dates with a great deal of varietal difference. Early to mid April was considered to he the optimum planting dates for snap bean in Kyungbuk area. High correlation was recognized between seed yield and no. of pods per plant, no. of seeds per plant, and 100 seed weight. 4. Days to flowering was three and seven days longer in Cheongsong, high mountainous area than in Kunwi, somewhat prairie lowland. One hundred seed weight was also higher in Cheongsong than in Kunwi. Rate of viviparous grains, pods, and decayed seeds was higher in Cheongsong but, at the same time, the rate of germination and seed yield was also higher in Cheongsong. 5. One hundred seed weight of KLG5007 increased continuously up to 35days after flowering and decreased thereafter but that of KLG50027 increased to 40days after flowering and slowly reduced thereafter. The content of crude oil reached to maximum at 40 days after flowering and reduced thereafter. The rate of germination in Gangnangkong 1 was the highest, 89.3%, at 35 days after flowering and reduced thereafter while that in KLG50027 reached to maximum, 70.7%. at 40days after flowering and reduced thereafter. Thus, the optimum harvesting time for snap bean was considered to be 35~40days after flowering. 6. The snap bean pods at yellow bean stage easily became viviparous ones under saturated moisture conditions for 24 hours at $25{\sim}30^{\circ}C$. Therefore, it is recommended to harvest pods somewhat earlier than yellow-bean stage and let them do post maturing, especially when it is to be rained.

• 한국작물학회지
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• 제53권3호
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• pp.308-313
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• 2008

쌀 수입 개방과 소비량이 감소되고 국민의 생활수준이 향상 되면서 소비자는 고품질의 농산물을 추구하게 되었고, 밥맛이 좋은 품종 및 재배방법 개발에 대한 연구가 필요하게 되었다. 이와 같은 노력의 결과 일품벼를 육성하여 농업인에게 보급하였고 밥맛이 좋으면서 단위면적당 쌀수량이 많아서 농업인이 선호하게 되었다. 하지만 일품벼에 대한 선호도가 향상되는 단계에서 농협 및 지자체에서 쌀을 브랜드화 하면서 대형 미곡종합처리장이 설립되고 시설이 좋아지면서 벼를 산물로 수매하게 되고, 도정률에 의한 차등수매 체제로 변화되었다. 이러한 상황변화는 도정률이 낮은 품종을 미곡종합처리장 에서 수매를 기피하게 (RPC) 되고 이는 농업인이 외면하는 상태가 되었다. 그래서 본 연구는 도정률에 영향을 미치는 요인을 분석하여 일품벼의 도정률을 향상시키고, 품종육성 및 재배기술 개발에 기초자료를 제공 하고자 수행하여 얻은 결과를 보고하고자 한다. 1. 이삭당 영화수는 일품벼가 105개, 추청벼가 70개로 일품벼가 35개 많았으며, 지경별로 보면 1차지경의 벼알수 비율은 일품벼 56.2%, 추청벼 61.4%로 추청벼가 많고, 2차지경의 벼알수 비율은 일품벼가 43.3%, 추청벼가 37.9%이었다. 2. 등숙정도를 정조의 비중선에 의하여 분류하면 일품벼가 추청벼보다 충실도가 낮았는데, 일품벼와 추청벼의 차이는 정선 후에 0.47%, 비중 1.00에서 1.28%, 비중 1.10에서 6.27%, 비중 1.20에서 31.67% 낮았다. 3. 왕겨 1개의 무게는 일품벼 4.16 mg, 추청벼 3.92 mg이었으며, 정조 1 kg의 왕겨 무게는 일품벼 157.36 g, 추청벼 151.31 g으로 왕겨비율은 일품벼는 15.74%, 추청벼는 15.13%로 일품벼가 추청벼보다 0.61% 높았다. 4. 도정률은 콤바인 수확 산물벼의 정현비율은 일품벼가 81.22%, 추청벼가 82.52%로 일품벼가 추청벼보다 1.30% 낮았고, 현백비율은 일품벼가 92.14%, 추청벼가 92.51%로 일품벼가 추청벼보다 0.37% 낮았다. 5. 일품벼가 추청벼보다 도정률이 1.67% 낮은데 요인별로 분석 하면 왕겨의 무게 0.61%, 현백비율 0.37% 및 등숙정도 0.69%이다. 이는 왕겨무게와 현백비율은 유전적인 요인으로 극복하기 어렵지만 등숙정도에 영향하는 0.69%는 재배 및 수확 후 관리를 철저히 할 경우 경감시킬 수 있을 것으로 생각된다.

• 한국균학회소식:학술대회논문집
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• 한국균학회 2014년도 춘계학술대회 및 임시총회
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• pp.13-13
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• 2014

Two kinds of mushrooms, Gumji (金芝; Ganoderma) and Soji, were described in old book of Samguksagi (History of the three kingdoms; B.C 57~A.D 668; written by Bu Sik Kim in 1145) in Korea-dynasty. Many kinds of mushrooms were also described in more than 17 kinds of old books during Chosun-dynasty (1392~1910) in Korea. Nowadays, mushroom cultivation has been increased through out the world last decade years. Production of mushrooms has also been increased 10-20% and many varieties have been cultivated. Similar trends were also observed in Korea. Approximately two hundred commercial strains of 37 species in mushrooms were developed and distributed to cultivators. Somatic hybrid variety of oyster mushroom 'Wonhyeong-neutari' were developed by protoplast fusion, and distributed to grower in 1989. The fruiting body yield index of somatic hybrids of Pleurotus ranged between 27 and 155 compared to parental values of 100 and 138. In addition, more diverse mushroom varieties such as Phellinus baumi, Auricularia spp., Pleurotus ferulae, Hericium erinaceus, Hypsizigus marmoreus, Grifola frondosa, Agrocybe aegerita and Pleurotus cornucopiae have been attempted to cultivate in small scale cultivation. Production of mushrooms as food was 190,111 metric tons valued at 800 billion Korean Won (one trillion won if include mushroom factory products; 1dollar = 1,040 Won) in 2011. Major cultivated species are Pleurotus ostreatus, Pleurotus eryngii, Flammulina velutipes, Lentinula edodes, Agaricus bisporus, and Ganoderma lucidum, which cover 90% of total production. Since mushroom export was initiated from 1960 to 1980, the export and import of mushrooms have been increased in Korea. Technology developed for liquid spawn production and automatic cultivation systems lead to the reduction of the production cost resulting in the increasement of mushroom export. However some species were imported because of high production cost for these mushrooms requiring the effective cultivation methods. Developing of effective post-harvest system will be also directly related to mushroom export. In academic area, RDA scientists have been conducting mushroom genome projects. One of the main results is the whole genome sequencing of Flammulina velutipes for molecular breeding. An electrophoretic karyotype of of F. velutipes was obtained using CHEF with 7 chromosomes, with a total genome size of approximately 26.7 Mb. The mususcript of the genome of F. velutipes was published in PLOS ONE this year. For medicinal mushrooms, we have been conducting the genome research on Cordyceps and its related species for developing functional foods using this mushroom. In 2013, Korea Food and Drug Administraion (KFDA) approved Cordyceps mushroom for its value as an immune booster.

• 농촌계획
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• 제22권4호
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• pp.131-138
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• 2016

Recently, the cultivated area is reduced, the ratio of upland-field in the total cultivated area is increasing relative appeared in 36.2% in 1990 from 43.7% in 2013. If upland-field can be applied well designed-infrastructure, good income crop production is possible, however, maintenance of infrastructure and a significant portion of the upland-field is maintained under insufficient infrastructure. While imports of agricultural products expanded since the 2000s in progress, looking at the self-sufficiency of upland-field crops, it is reduced to from 90% to 42% for the pepper, it is from 90% to 74% for the garlic, cereals is reduced from 42% by 26%. As a result of these conditions, the competitiveness of farmers has weakened, the risk to meet the challenges of this area of production and supply reduction increased. This study was the first to conduct a basic evaluation index, data analysis and evaluation of indicators to diagnose the agricultural production capacity of the upland field. 12 kinds classified index of producing conditions from the natural environment and eight factors for the cultivation and production capabilities have developed for the assessment of productivity of upland-field (especially Kimchi cabbage). Through this regional imbalance was found, based on the production capabilities conditions are good in Haenam, Gangneung, Pyeongchang. 3 Regions have been low and the lowest Youngwol to 0.8992. Climate(Cultivation conditions) indicators of Mungyeong region is the highest, relatively low areas were in Taebaek. In particular, it is determined to be preferred that the area required for the enhancing the production environment based on providing the convenience for the producing and maintenance of the first production area. It is necessary Increasing part of mechanization, agro-industrial competitiveness through aggressive management plans for facilities as required in the process of post-harvest storage, processing, distribution line can be improved.