검색결과

검색조건
좁혀보기
검색필터
결과 내 재검색

간행물

    분야

      발행연도

      -

        검색결과 72

        1.
        2024.02 KCI 등재 구독 인증기관 무료, 개인회원 유료
        This study investigated the physicochemical properties of protein-fortified rice flour by mixing rice flour (RF) with untreated and fermented plant proteins. Fermented faba bean protein concentrate (FMFP) and chickpea flour (FMCF) were prepared by solid-state fermentation of faba bean protein concentrate (UTFP) and chickpea flour (UTCF) using Bacillus subtilis. FMFP and FMCF exhibited higher crude protein, reducing sugar and starch contents more than their counterparts. The increased rate of essential and branched-chain amino acids in FMFP and FMCF exceeded that of crude protein. Adding plant proteins to RF decreased swelling power (SP) and increased solubility in RF-UTFP and RF-FMFP mixtures, while SP and solubility increased in RF-UTCF and RF-FMCF mixtures. All RF-plant protein mixtures showed higher gelatinization temperature and lower gelatinization enthalpy than RF. Thermal gelation was found in all RF-plant protein mixtures, but the RF-FMCF mixture may form weak and unstable gel structures. The increase in pasting viscosity was minimal for the RF-UTFP and RF-FMFP mixtures but more pronounced for the RF-UTCF and RF-FMCF mixtures. Overall, FMFP may be a potential protein source to supplement the protein deficiency in RF with minimal changes in RF-based foods’ rheological and textural properties.
        4,300원
        2.
        2023.11 구독 인증기관·개인회원 무료
        To safely dispose of highly radioactive spent resin and concentrate waste generated through nuclear power plant operations, it is essential to meet the physicochemical properties requirements of the packages and ensure the accuracy and reliability of radiological characteristics determination. Both spent resin and concentrate are packaged in high-integrity containers (HICs) after drying and are homogeneous waste products generated in the primary system and liquid radioactive waste treatment system. Meeting the physicochemical properties requirements does not appear to be difficult. However, to achieve reliable radiological characterization of high-integrity container packages, it is necessary to take a representative sample and perform accurate radiological analysis. Therefore, this paper discusses the methodology for evaluating the radionuclide inventory of high radioactive resin and concentrate packages, as well as the essential element technology and considerations. For relatively high radioactive resin and concentrate packages, the radionuclide inventory for each package should be evaluated with high reliability through direct radiological analysis of the representative samples collected for each package. This can contribute to the efficient operation of radioactive waste disposal facilities. Radionuclide-specific concentrations directly analyzed for each package will be managed in a database. As analytical data accumulates and direct measurements of high-integrity container package such as the radwaste drum assay system (RAS) become feasible, statistical techniques such as correlation analysis between easy-tomeasure (ETM) nuclides and difficult-to-measure (DTM) nuclides can lead to the development of efficient and reasonable indirect evaluation methods, such as scaling factor and the mean activity concentration method. As for the element technology, a remote representative sampling technique should be developed to safely and effectively take representative samples of highly radioactive materials, including granulated or hardened concentrate waste. Considerations should also be given to determining the sample quantity representing each package, as well as establishing radiation calibration and measurement methods appropriate to the radiation levels of the representative samples.
        3.
        2023.08 KCI 등재 구독 인증기관 무료, 개인회원 유료
        In this study, effect of mixing ratio of -carrageenan and glucomannan on quality characteristics of jelly incorporated with omija concentrate were analyzed. Through previous studies, the concentration of the gelling agent was fixed at 1.5% of the weight of the jelly. As a control, omija concentrate jelly using a single gelling agent was prepared. The texture of the jelly using glucomannan alone could not be measured because it was difficult to maintain its shape. The texture was changed according to the mixing ratio of -carrageenan and glucomannan. When -carrageenan was mixed with glucomannan, the water holding capacity was increased. Jelly prepared in mixing 2:1 ratio of -carrageenan and glucomannan was observed to have the highest hardness, springiness, gumminess, cohesiveness, and chewiness. Also, in order to manufacture omija jelly that maintains high water retention for a long period of time, it is optimal to mix -carrageenan and glucomannan at a ratio of 1:2.
        4,000원
        4.
        2023.06 KCI 등재 구독 인증기관 무료, 개인회원 유료
        홍삼의 일반적인 가공법인 물과 주정 혼합용매로 추출여과하여 농축액으로 제조 시 증숙 등의 가열처리에 의해 가수분해되거나 중합반응이 일어나게 되어 현재 기능성이 밝혀진 30여 가지 주요 진세노사이드 외 극미량인 200여 종의 진세노사이드가 검출되고 있어서, 오히려 홍삼 본래 의 기능성 규명과 효능 구현을 복잡하게 만들고, 추출 횟 수를 거듭할수록 떫은맛이 강해지는 등 건강기능식품으로 서 부정적인 영향을 배제하기 위하여 저온(40oC 미만)에 서 1차만 추출한 홍삼농축액을 제조한 결과 수율은 고형 분 66-77% 정도에서 26-30%를 나타내어 기존의 연구 결 과인 40.47±0.47% 보다 현저히 적은 수율을 나타내었고, 동결건조 분말의 진세노사이드 함량분석시험을 진행한 결 과 시료 18종 전체에서 진세노사이드 34종이 검출되었고, 특히 홍삼 지표성분 3종인 Rb1, Rg1, Rg3 합계는 42.48 mg/ g으로 시판 홍삼제품의 환산량 9.0 mg/g과 8.7 mg/g 보다 4-5배 많았다. 본 시료는 진한 홍삼의 향취와 함께 면역력 증진 등 6가지 기능발현에 9-25%의 소량 복용으로 1일 복 용량이 유의성 있게 작아서 복용의 편의성과 함께 제품의 보관, 유통에 장점이 있는 것으로 판단된다.
        4,000원
        5.
        2023.05 구독 인증기관·개인회원 무료
        Domestic NPPs had produced the paraffin-solidifying concentrate waste (PSCW) for nearly 20 years. At that time radioactive waste management policy of KHNP was to reduce the volume and to store safely in site. The PSCW has been identified not to meet the leaching index after introducing the treatment system. PSCW has to be treated to meet current waste acceptance criteria (WAC) for permanent disposal. PSCW consists of dried concentrate 75% and paraffin 25% of volume. When PSCW is separated into a dried concentrate and a paraffin by solubility, total volume separated is increased twice. Final disposal volume of dried concentrate can reach to several times when solidifying by cement even considering exemption. Application of polymer solidification technology is difficult because dried concentrate is hard to make form to pellet. When PSCW is packaged in High Integrity Container (HIC), volume of PSCW is equal to the volume before package. The packaging process of HIC is simple and is no necessary of large equipment. It is important to recognize that HIC was developed to replace solidification of waste. HIC has as design goal a minimum lifetime of 300 years under disposal environment. The HIC is designed to maintain its structural integrity over this period, to consider the corrosive and chemical effects of both the waste contents and the disposal environment, to have sufficient mechanical strength to withstand loads on the container and to be capable of meeting the requirements for a Type A transport Package. The Final waste form is required for facilitating handling and providing protection of personnel in relation to solidification, explosive decomposition, toxic gases, hazardous material, etc. Structural stability of final waste form is required also. Structural stability of the waste can be provided by the waste itself, solidifying or placing in HIC. Final waste form ensure that the waste does not structurally degrade and affect overall stability of the disposal site. The HIC package contained PSCW was reviewed from several points of view such as physicochemical, radiological and structural safety according to domestic WAC. The result of reviewing shows that it has not found any violation of WCP established for silo type disposal facility in Gyeongju city.
        8.
        2021.12 KCI 등재 구독 인증기관 무료, 개인회원 유료
        The objective of this study was to evaluate the quality characteristics of mozzarella cheese added wine concentrate. Mozzarella cheese was produced with different additives of wine concentrate which were 0~5%. The pH and the total acidity of the Cheese were analyzed. We also examined the radical scavenging activities for the antioxidant effect of samples and evaluated for their total polyphenol, and total flavonoid contents. The pH of Meoru wine cheese (6.28~6.37) was significantly higher and total acidity tended to decrease compared to that of the control. L* (lightness) of the wine cheese decreased with increasing amounts of wine concentrates whereas a* (redness) tended to increase. In the texture profile analysis, Meoru wine cheese showed higher values of hardness, gumminess, and chewiness. The ABTS radical scavenging activity of Meoru wine cheese showed the highest value when wine concentrate amounts were 2%. The DPPH radical scavenging activity was significantly increased in cheese added with wine concentrate. Total polyphenol contents and total flavonoid contents of Meoru wine cheese tended to increase with increasing amounts of wine concentrate. This research result highlights the positive influence of wine concentrate addition in cheese. Also, these results are expected to impact the experience programs in farm wineries.
        4,000원
        10.
        2021.06 KCI 등재 구독 인증기관 무료, 개인회원 유료
        The present study evaluated the influence of rumen inocula of different breeds on in vitro fermentation with forage and concentrate substrates. An in vitro was conducted under a 2×2 factorial arrangement with two breeds (Jersey and Holstein steers) and two feed substrates (forage and concentrate) as factors. Three Jersey and 3 Holstein steers were used for the source of in vitro inocula. Metataxonomic analysis of donor rumen fluids showed that Firmicutes was more abundant in Jersey, while Bacteroidetes in Holstein steers. In vitro ㏗ was lower in the fermented inocula of Jersey steers and in the concentrate substrate (p<0.05). After 24h, higher gas production, dry matter, and neutral detergent fiber degradability, and total volatile fatty acids concentration were noted in concentrate substrate (p<0.05). After 24h, inocula of Jersey steers had higher methane and ammonia-nitrogen (p<0.05). After 24h, fermented inocula of Holstein steers produced higher propionate (p<0.05). Conversely, in vitro butyrate production was higher in the fermented inocula from Jersey steers (p=0.072) and in those with concentrate substrate (p<0.05). After 24h, the total bacterial population (log10 c opies) was h igher in t he fermented inocula received from Jersey steers and in the concentrate substrate whereas, Fibrobacter succinogenes and Ruminococcus flavefaciens population were higher (p<0.05) only in the concentrate substrate. Overall results suggest that rumen inocula of different donors influence in vitro fermentation either with forage or concentrate substrates.
        4,000원
        11.
        2020.12 KCI 등재 구독 인증기관 무료, 개인회원 유료
        This study aimed to analyze ruminal fermentation, methane emissions, and methanogen levels for different forage feed type and concentrate feed ratios. Alfalfa hay, oat hay, and a feed concentrate were used for in vitro fermentation experiments, at ratios of 9:1, 5:5, and 1:9 (forage:concentrate). After 24 h of incubation, rumen fermentation and methanogen level changes were evaluated. In the low forage treatments, the total gas, CH4, NH3-N, true dry matter digestibility, and total volatile fatty acid were higher than the other treatments, which were used as the parameters on which to assess rumen fermentation (P < 0.05). The feed ratio influenced the copy number for the total archaea and the genus Methanobrevibacter (P = 0.015, P = 0.010). The copy number result trend was like that for CH4 per digested dry matter (DDM). The PCR results and methanogen copy number analysis indicated that the composition of the methanogens affected the CH4 levels, not their copy number. The results of this study can be applied to predict rumen fermentation and methane emission patterns for cattle fed a variety of feedstuffs.
        4,000원
        12.
        2020.08 KCI 등재 구독 인증기관 무료, 개인회원 유료
        The purpose of this study is to investigate the physicochemical properties of jelly made from fermented red ginseng concentrate (FRGC) that can be easily absorbed and digested for the health promotion of the elderly. The pH of the jellies tended to decrease with increasing concentration of FRGC. Soluble solid content has significantly higher value when added more than 2%, and the water content of the sample was significantly lower when the FRGC was added 4%. As the amount of FRGC was increased, the total color difference increased, and the hardness of samples decreased significantly. On the other hand, the total ginsenoside contents of the FRGC was 45.50 mg/g. As the concentration of FRGC increased, the content of polyphenol and flavonoids increased. The increasing pattern of polyphenols and flavonoids showed a similar trend. As the content of FRGC increased, ABTS free radical scavenging activity significantly increased (p<0.05), and in the control, the minimum value (62.6 AEAC) and the 4% sample were highest (116.2 AEAC). DPPH radical scavenging activity was like that of ABTS radical scavenging activity. However, there was no significant difference in DPPH radical scavenging activity of 3% and 4% red ginseng jelly.
        4,000원
        13.
        2020.05 KCI 등재 구독 인증기관 무료, 개인회원 유료
        This study aims to analyze the cooking and sensory characteristics of noodles to which different types and amounts of apples were added. Apple noodles were made by the addition of apple flour and apple concentrate to wheat flour in proportions of 0, 5, 10, 15, and 20%, respectively. Cooking time, weight after cooking, water loss after cooking, and rehydration rate were analyzed as cooking characteristics. Hardness, adhesiveness, cohesiveness, springiness, and chewiness were measured as texture characteristics, whereas sensory evaluation was performed on the appearance, color, taste, aroma, texture, and overall preference of noodles. The cooking time decreased as the amount of apple added increased, and the weight after cooking, water loss after cooking, and rehydration rate increased. The hardness and chewiness were decreased and the adhesiveness was increased as the amount of apple added was increased. The sensory test of apple noodles showed a higher score in taste and overall preference than that of the control. Furthermore, the addition of apples tended to produce a high score in all sensory tests, indicating that the addition of apples has a good effect on the quality of noodles. In particular, the addition of 10% apple concentrate showed high scores in all the tested characteristics.
        4,000원
        14.
        2019.12 KCI 등재 구독 인증기관 무료, 개인회원 유료
        This study was carried out to investigate the effect of the feeding method of total mixed fermentation (TMF) and concentrate feed on the growth performance, carcass and meat characteristics of late fattening Hanwoo steers. Twenty-four Hanwoo steers were used in this study. The control group was fed with concentrate feed + rice straw from the growing to the late fattening period, while the T1 group was fed with TMF from the growing to the early fattening period and concentrate feed + rice straw for the late fattening period. The T2 group was fed with TMF from the growing to the late fattening period. The average daily gain (ADG) and feed conversion ratio (FCR) were not different between the treatment and control group. Serum cholesterol and high density lipoprotein (HDL) cholesterol concentrations were higher in the T2 groups than in the control group (p<0.05). The yield grade and quality grade were not different between the treatment and control group. The lightness of longissimus muscle was higher in the T1 group than in the control and T2 groups (p<0.05). Poly-unsaturated fatty acid (PUFA) of longissimus muscle was increased in the T2 groups than in the control group. Therefore, the method of feeding TMF and concentrate feed could have a positive effect on the lightness and fatty acid composition of longissimus muscle without affecting the growth and carcass grades of Hanwoo steers.
        4,200원
        15.
        2019.12 KCI 등재 구독 인증기관 무료, 개인회원 유료
        This study was conducted to investigate the effects by supplementing concentrates during the late fattening phase in TMR (total mixed ration) feeding of Korean steer on the performance, carcass traits, physico-chemical characteristics and sensory test of the longissimus dorsi muscle. Eight Korean steers (24 months of age) averaging 604 kg in body weight were fed the TMR (Control) or the TMR supplemented with concentrates (TMR+conc.) until 30 months of age, then they were slaughtered. Steers fed the TMR supplemented with concentrates had a higher (p<0.05) intakes of dry matter and TDN (total digestible nutrient), carcass weight and marbling score compared to those fed TMR only, but carcass grade did not differ (p>0.05) between treatments. Amino acid concentration of the longissimus dorsi muscle did not differ between treatments, However, the highest concentrations were for glutamic acid and lowest for cystine; further, and the content of essential amino acids was highest for lysine, leucine, threonine, arginine, and isoleucine in that order. Cis-oleic acid and arachidonic acid of fatty acids in the longissimus dorsi muscle were higher (p<0.05) in the control condition compared to TMR+conc. The contents of oleic acids, palmitic acid, stearic acid constituted about 88% of the total fatty acids. Although the physico-chemical characteristics of the longissimus dorsi muscle did not significantly differ between treatments (p>0.05), but the sensory test results were lower for the TMR+conc. condition. These results suggest that supplementing concentrates during the late fattening phase of Korean steers resulted in increasing the carcass weight and marbling score. However, the cis-oleic acid content of the longissimus dorsi muscle was decreased as a result of supplementing concentrates, which could affect negatively in meat sensory evaluation.
        4,000원
        18.
        2017.03 KCI 등재 구독 인증기관 무료, 개인회원 유료
        A total of nine Korean indigenous goats were used in a cross-over arrangement to give nine replicates per treatment, and they were housed individually assigned to 1 of 9 dietary treatments. Nine treatments were 0, 500, and 1000 ppm of quercetin supplementation in diets by mixing roughage and concentrate with different ratios (RC ratio) of 3:7 (RC 30), 5:5 (RC 50) and 7:3 (RC 70). Nutrient utilizations of dry matter, crude fat and NDF were not affected by neither RC ratio nor dietary quercetin (p>0.05), but the rate of crude protein and ADF increased in animals in RC 70 group regardless of quercetin supplementation (p<0.05). In addition, higher RC ratio increased (p<0.05) N retention and N retention rate. Total VFA, acetic acid, propionic acid, iso-butyric acid, butyric acid, iso-valeric acid and valeric acid contents were not affected (p>0.05) by dietary quercetin. Meanwhile, lower total cholesterol level exhibited in animals in RC 70 group compared to RC 30 or 50 groups, unrelated to dietary quercetin (p<0.05), however other plasma parameters were not influenced (p>0.05) by RC ratio and dietary quercetin. Our results indicated that both RC ratio and dietary quercetin may not directly affect the production indices and immune responses in Korean indigenous goat
        4,000원
        19.
        2017.03 KCI 등재 구독 인증기관 무료, 개인회원 유료
        본 연구는 농후사료의 급여수준을 달리하여 제주산마 에게 급여하는 경우에 체중 변화, 장내 미생물 조성 및 혈액성상의 변화에 미치는 효과를 구명하기 위하여 수행 되었다. 공시축으로 24-36개월의 제주산마(제주마×더러브 렛) 14두를 공시하였으며, 농후사료의 급여수준을 체중의 1.5%(5두), 2%(4두)와 2.5%(5두)로 급여하여 봄과 겨울 증 체율 및 혈액 특성과 생리적 변화를 조사하였다. 봄에 총 증체량은 1.5%, 2%, 2.5% 급여한 처리구에서 12.6kg, 21.5kg, 29.0kg, 겨울에 총 증체량은 21.6kg, 28.0kg, 42.6kg을 나타냈고, 일당 증체량은 봄에는 0.23kg, 0.39kg, 0.54kg, 겨울에는 0.40kg, 0.52kg, 0.79kg을 나타내어 체중의 2.5%를 섭취한 구에서 높은 경향을 나타내었다. 내독 소는 농후사료 과다 섭취에 의해 그람음성균의 세포벽에 서 방출되는 물질로 봄에 시행한 시험에서 3주차 때 농 후사료를 체중의 2%와 2.5%를 급여한 처리구에서 유의 적으로 낮은 결과를 나타내었으나(p<0.05) 이후에는 점차 모든 처리구에서 수치가 비슷해져 적응하는 경향을 보여 모든 처리구가 농후사료 급여에 적응하는 경향을 보였다. 봄에 실시한 실험에서 8주차에 분 pH는 농후사료를 체 중의 1.5%, 2%, 2.5% 급여한 처리구에서 각각 6.2, 5.8, 5.7로 나타나 농후사료를 체중의 2%와 2.5%를 급여한 처 리구에서 유의적으로 낮은 결과를 나타내었다(p<0.05). 직장온도는 겨울에 실시한 실험에서 8주차에 농후사료를 1.5%, 2%, 2.5%. 급여구에서 각각 37.8℃, 37.9℃, 38.4℃ 를 나타내어 농후사료 2.5% 급여구에서 직장온도가 유의 적으로 높은 수치를 나타내었다(p<0.05). 분내 미생물에 서는 셀룰로오스와 탄수화물(구조 탄수화물) 분해에 관여 하는 미생물로 알려진 Fibrobacter가 체중의 1.5% 급여했 을 경우 총 미생물군에서 2.49%를 차지하였고, 2%와 2.5% 급여구에서는 각각 1.42%와 1.09%를 차지하여 농후 사료 급여량이 증가할수록 유의적으로 감소하는 경향을 보였다. 결론적으로 농후사료 2.5%의 급여가 비육마 사육 방법으로 활용할 수 있을 것으로 사료된다.
        4,000원
        20.
        2016.09 KCI 등재 구독 인증기관 무료, 개인회원 유료
        Essential oils (EOs) extracted from plants possess various biological activities and have been considered as natural insecticides due to their potent insecticidal activities. In regard to develop natural insecticides, EOs are formulated as an emulsifiable concentrate and their acute toxicity against to fishes were determined in a static condition using Cyprinus carpio. Coriander EO was used as an active ingredient mixed with ethanol for solvent and various surface active agents. The tested EOs were obtained from a commercial market, and three different extractions were also undertaken to produce EO using steam distillation, solvent extraction, and supercritical fluid extraction. Among the emulsifiable concentrate including a commercial coriander EO, surface active agents such as Tween 80, sodium dodecyl benzene sulfonate (SDBS), and mixture of SDBS and Nonidet showed acute toxicity to the fish. With the three different EO extraction, coriander EO obtained from supercritical fluids with Triton X-100 exhibited acute toxicity to C. carpio. Taken together, Tetgitol and Nondet are considered as surface active agents for the emulsifiable formulation of coriander EO.
        3,000원
        1 2 3 4