• Title, Summary, Keyword: 곡물류

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저선량 $\gamma$선 조사에 의한 곡물류와 채소류의 생육촉진 효과

  • 김재성;송희섭;이영근;김진규
    • Proceedings of the Korean Nuclear Society Conference
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    • pp.645-650
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    • 1998
  • 작물과 채소류의 생육에 대한 저선량 방사선 조사효과를 보고자 온실과 포장실험을 수행한 결과, 발아율과 유묘초장을 조사한 초기생육의 경우 벼, 콩 및 들깨의 200rad, 400rad, 100rad에서 생육촉진 효과를 볼 수 있었다 포장실험에서 벼의 경우 저선량조사에 의해 수량증가 효과는 없었고 종자의 불임율이 감소하였으며 콩과 들깨의 경우 400rad에서 생육상태와 수량이 다소 양호하여 저선량에 의한 생육촉진 효과가 인정되었다. 배추와 무의 경우는 200rad에서 발아율이 증가하여 저선량조사에 의한 효과를 볼 수 있었고 800rad에서 초장 등이 다소 증가하였으나 뚜렷한 수량증가 효과는 볼 수 없었다.

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Survey and Controll of the Occurrence of Mycotoxins from Postharvest Cereals III. Control of Mycotoxin Producing Pathogens in Postharvest Cereals(Wheat, Bean, Corn) (수확후 곡물류에 발생하는 진균독소의 탐색과 방제 III. 수확후 곡물류(밀, 콩, 옥수수)에서 발생하는 진균독소균의 방제)

  • 백수봉;김은영;정일민;유승헌
    • Korean Journal Plant Pathology
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    • v.14 no.5
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    • pp.531-535
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    • 1998
  • This study was conducted to test the effect of chitosan, grape fruit seed extracts(GFSE) and sodium hypochloride gas on the control of mycotoxin producing pathogens occurred kin postharvest grains. Among the treatments, sodium hypochloride gas showed the highest control effect on wheat, soybean and corn see maintained in natural conditions after postharvest and GFSE had a little control effect, but chitosan treatment had no effect. Sodium hypochloride gas exhibited the strongest control effect on the major mycotoxin producing pathogens such as Penicillium spp. Aspergillus spp. and Fusarium spp., whereas GFSE had a little control effect. Sodium hypochloride gas appeared to be effective when the grains were treated with this gas more than 24 hours.

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A Study on the Sodium Saccharin, Sodium Benzoate and Potassium Sorbate Used in Foods (식품 중 함성첨가물 사용실테 조사연구 - 사카린나트륨, 안식향산나트륨, 소르빈산칼륨 중심으로 -)

  • 김명길;윤미혜;윤미혜;정일형;김양희;정진아
    • Journal of Food Hygiene and Safety
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    • v.14 no.3
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    • pp.244-248
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    • 1999
  • This study was carried out to determine the contents of sodium saccharin, sodium benzoate and potassium sorbate in danmooji, jangachi, puffed cereal, mixed beverages, carbonated beverages, fruit and vegertable juices (excepted unheated fruit and vegertable juices) and dried fishery products(seasoned) in the market. Sodium saccharin, sodium benzoate and potassium sorb ate were analyzed by HPLC at the wavelength of 215 nm with 0.05% ammonium phosphate dibasic acetonitril mobil phase(94 : 6), and recovery rates were 96.2-100.3%, 95.8-100.9%, 96.1-99.8%, respectively. The contents of sodium saccharin were N.D.-1234.8 mg/kg in danmoogi, jangachi, puffed cereal and mixed beverages and sodium benzoate in mixed beverages, carbonated beverages, fruit and vegertable juices were N.D.-663.2 mg/kg, and potassium sorbate in danmooji, jangachi and dried fishery products were N.D.-2725.2 mg/kg.

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Study on the Characteristics of DNA Comet Assay for Irradiated Vegetables and Grains (방사선조사된 채소류 및 곡물류의 DNA Comet Assay 특성 연구)

  • Seo, Jung-Eun;Oh, Se-Wook;Kim, Yun-Ji;Lee, Nam-Hyouck;Hong, Sang-Pill;Kim, Young-Ho
    • Journal of the Korean Society of Food Science and Nutrition
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    • v.37 no.4
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    • pp.472-476
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    • 2008
  • The possibility of DNA comet assay as a rapid method for screening the irradiated vegetables and grains was evaluated. Vegetables (spring onion, garlic, and tomato) irradiated at $0{\sim}3$ kGy and grains (rice flour and black soybean) irradiated at $0{\sim}9$ kGy were used as samples. Optimum DNA comet assay conditions, such as elution, sedimentation of suspension, and lysis time of cell, were established. The optimum conditions for vegetables were 10 min for the elution time, 0 min for the sedimentation time, and 5 min for the lysis time. The optimum conditions for grains were 15 min for the elution time, 60 min for the sedimentation time, and 30 min for the lysis time. For the food application of DNA comet assay, it was possible to screen various food samples irradiated at the following doses: spring onion at 2 kGy, garlic at 3 kGy, tomato at 1 kGy, rice flour at 9 kGy, and black soybean at 3 kGy. Each sample showed different forms and sizes in DNA comet. Therefore, further studies on various methods using comet shape, concentration, or area in DNA comet assay are necessary.

미국, 2005년의 육계산업 전망

  • 한국농촌경제연구원
    • Monthly Korean Chicken
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    • v.60 no.54
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    • pp.94-95
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    • 2005
  • 2003년 12월 발생한 BSE의 영향으로 미국은 중요한 쇠고기 수출 시장을 잃었고, 2004년 초에 발생한 AI의 영향으로 가금류 수출에 제약을 받게 되었다. 또한 양돈사업의 높은 수익으로 인해 양돈업자들이 생산량을 늘려 돼지고기 공급량이 크게 늘었다. 그러나 육류 공급이 크게 증가했음에도 불구하고 2004년 소 가격은 2003년 수준보다 높았고, 육계가격은 기록적인 수준이었다. 2005년은 희망차게 시작되었다. 육류 단백질에 대한 수요가 크게 증가한 반면 육류 공급 증가는 수요에 미치지 못하여 가격은 높은 수준을 유지하고 있다. 또한 곡물가격은 적정한 수준을 유지하고, 여러 해 지속된 미 서부의 가뭄이 해소되고 있다. 생산자들은 수익향상에 따라 반응하고 있다. 돼지와 가금류 생산자들은 현재 이들 산업의 호전된 수익성에 반응하여 생산량을 완만하게 증가시킬 것으로 예상된다

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해외정보-2005년 미국 축산물 수급 전망

  • Jeong, Min-Guk
    • 사료
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    • pp.61-66
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    • 2005
  • 2005년 2월 현재 미국은 육류 단백질에 대한 수요가 크게 증가한 반면 육류 공급 증가는 수요에 미치지 못하여 가격은 높은 수준을 유지하고 있다. 또한 곡물가격은 적정한 수준을 유지하고, 여러 해 지속된 미 서부의 가뭄이 해소되고 있다. 생산자들은 수익 향상에 따라 반응하고 있다 .돼지와 가금류 생산자들은 현재 이들 산업의 호전된 수익성에 반응하여 생산량을 완만하게 증가시킬 것으로 예상된다. 소 사육 부문도 흑자를 기록하고 있으며, 미 서부의 가뭄이 해소되면서 소 사육두수가 증가하여 회복기로 접어들었다.

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A comparison study of crude protein contents obtained utilizing the Kjeldahl method and Dumas combustion method in foods (식품 중 조단백질 정량을 위한 켈달법과 듀마스법 비교 연구)

  • Hwang, Sun Hye;Koo, Minseon;Jo, Saerom;Cho, Yong Sun
    • Analytical Science and Technology
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    • v.33 no.3
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    • pp.143-150
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    • 2020
  • In this study, crude protein was analyzed and compared using the Kjeldahl and Dumas method for cereals, meat, sea food, chemical samples and vegetable. The nine kinds of cereal, including white rice, were analyzed. In the result, the correlation coefficient of the Kjeldahl and the Dumas method indicated that there was no significant difference between them, showing 0.994 of it and 0.956 of p-value. Also, for the nine kinds of meat, five kinds of sea food, three kinds of chemical samples, four kinds of vegetable, there was little difference about the correlation coefficient of the Kjeldahl and the Dumas method, showing 0.9725, 0.9879, 0.9985 and 0.9873 of it and 0.947, 0.761, 0.997 and 0.727 of p-value, respectively. For the samples of meat, they were not fully homogenized, so the reproducibility of them was not good in the Dumas method, which is required to be analyzed in small size. However, when vegetables, which contain a lot of nitrates, are analyzed using Kjeldahl, they showed the lower reproducibility compared to the result of using Dumas because they are not completely decomposed in the Kjeldahl method. In the Dumas method, the samples should be homogenized because only 0.1 g sample is used. In short, neither of the Kjeldahl and Dumas methods are an accurate quantitative test because both of them do not directly analyze pure protein but measure the amount of protein based on analysis of nitrogen. Therefore, it is important of selecting the appropriate analysis method considering the characteristics of samples.

Studies on the Induction of Transformation in Cereal Plants. III. Cultures and Regeneration of Rice Protoplasts Transferred Foreign Genes. (곡물류의 형질전환 유도에 관한 연구 III. 외래 유전자가 도입된 벼 원형질체의 배양 및 재분화)

  • Hwang, Baik;Hwang, Sung-Jin;Im, Hyong-Tak;Kang, Young-Hee
    • KSBB Journal
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    • v.8 no.1
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    • pp.62-68
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    • 1993
  • Transformed rice plantlet were recovered from protoplasts by electroporation with the plasmld pB 1121, which contain the plant expressible NPT-II and GUS genes. Embryonic cell suspension culture was established with embryonic callus induced from mature seeds of rice (Oryza sativa L. cv. Dong-jin) on the MS medium supplemented with 2.0 mg/l 2,4-D, 0.5 mg/l kinetin, 3% sucrose. Protoplasts isolated from embryonic cell suspensions were electroplated and then poterltialty-transformed tissues were selected by growth on the medium containing 200 mg/l kanamycin sulfate. When subjected to GUS assay, they stained blue, indicating the expression of the inserted GUS genes. Plantlets were regenerated from electroplated protoplasts on the hormone free MS medium. Transferred foreign genes in the plants were confirmed by southern hybridization. These results support use of electroporation for transformation of these important cereal plants.

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Studies on the Induction of Transformation in Cereal Plants.II. Expression of Gene Transferred into Rice Protoplasts by Electroporation (곡물류의 형질전환에 관한 연구.II. Electroporation에 의해 벼 원형질체로 도입된 유전자의 발현)

  • Hwang, Baik;Hwang, Sung-Jin;Im, Wook-Bin;Im, Hyong-Tak;Kang, Young-Hee
    • KSBB Journal
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    • v.5 no.4
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    • pp.323-327
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    • 1990
  • Protoplasts isolated from embryogenic cell suspensions were electroporated in buffered solutions containing plasmid DNA of pBI121. Transient GUS (beta-glucuronidase) activity measurement and selection for kanamycin resistent showed that expression of foreign genes and stable loransformation were achieved. GUS transient gene expression was increased by increasing DNA concentration of pBI121 plasmid and affected by the level of the applied voltage. An optimal level of GUS activity was obtained after electroporation with a pulse of 200 voltage/1180 uF. Protoplast viability was up to the 60% at the optimal voltage. Cell colonies resistent to 200$\mu\textrm{g}$/ml kanamycin were selected in agar medium and identified by histochemical GUS assay.

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