• Asian-Australasian Journal of Animal Sciences
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• 제17권7호
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• pp.1019-1025
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• 2004

The experiment was conducted to investigate the feasibility of using vegetable oil and non-fat dry milk (powdered milk) with skim milk for the preparation of dahi. In this experiment, six different types of dahi were prepared from whole milk, skim milk and admixture of non-fat dry milk with different levels of vegetable oil. The prepared dahi samples were subjected to physical, chemical and microbiological analysis to evaluate their quality. It was observed that the addition of non-fat dry milk and vegetable oil with skim milk improve the physical qualities (smell and taste, body and consistency, color and texture) of prepared dahi samples. Addition of non-fat dry milk and vegetable oil also improve the total solids, fat and protein content of dahi samples. It is concluded that the addition of vegetable oil at a rate of 4 to 6% together with 5% non-fat dry milk gave the best result.

• 한국자원식물학회지
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• 제2권1호
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• pp.223-233
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• 1989

Recently, researches on oil crops Ln Korea were breeding on edible oil crops such as rapeseed sesame, peanut , periLla.Numerous varieties were released as a result of ective breedingworks on edible oil crops, that is 7 rape varieties including Yu-dal, Mokpo-11, Yongdang, Nozeogchae, Naehan, Yeongsanyuchae and Ch-eongpungyuchae (hybrid),5 varieties sesame including Suweon-5,9,21,Kwangsan99ae and Dabaekggae, 5 peanut varieties including Seodun-tangkonT,Yeonghotangkong, 01tankong , ShinpungtanTkong and SaedI-tanGkong, 3 periLLa varietLes including Daegu, Suweon8 and 10,res-pectively. This varietLes showed a good oil quality with high o-Leic and LinoLeic acids content, but periLLa oil seemed to be un-suitable for a edible use, since about 53 Percent of Its fatty a-cids was in the from of unsaturated LinoLenic acid.

• 식품과학과 산업
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• 제51권2호
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• pp.100-113
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• 2018

To obtain an edible grade oil from crude oil extracted from oil-bearing materials, it is generally necessary to carry out a refining process composed with degumming, deacidification, bleaching, and deodorization, to remove undesirable matters which affect the quality and shelf life of oils. The main purpose of degumming is to remove gum material mainly consisted with phospholipids. Phospholipases convert nonhydratable phospholipids into their hydratable forms which can be removed by centrifugation. In comparison with conventional water and acid degumming processes, enzymatic degumming can result the lower phosphatide content in oil than conventional processes. The enzymatic degumming can be conducted with the reduced amount of acid, and contributes to generate less amount of wastewater, decrease of operating cost, and increase oil recovery yield. The phospholipases used in enzymatic degumming process are phospholipase A1, A2, B, and C.

• 에너지공학
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• 제14권2호
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• pp.159-166
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• 2005

국내에서 폐플라스틱 발생량은 증가하고 있지만 이에 대한 처리방법 및 재활용은 부족한 실정이다. 하지만 최근에 플라스틱과 같은 고분자물질의 처리 방법으로 열분해기술에 대한 관심이 증가하고 있다. 본 연구에서는 혼합폐플라스틱의 처리 및 생성되는 재생유의 이용가능성을 평가하기위해 폐플라스틱의 각 재질별 TGA와 DCS분석을 통한 열분해특성 파악과 재생유의 품질검사 및 성상분석을 통한 이용가능성을 평가하였다. 온도변화에 대한 재질별 플라스틱의 열분해는 PP, LDPE, HDPE, PET, PS,기타 순으로 이루어짐을 확인할 수 있었다. 이러한 각 재질별 플라스틱의 열분해 특성을 기초로 하여 혼합폐플라스틱의 열분해처리 조건을 설정하였고, Batch식 열분해 플랜트를 가동하며 혼합폐플라스틱을 처리하였다. 열분해 처리시 발생되는 가연성가스를 포집, 냉각 및 정제과정을 거쳐 오일을 생산하고, 시중에서 판매되고 있는 연료유와 재생유를 한국산업규격의 석유품질검사법에 준하여 분석하였다. 재생유의 품질은 낮은 인화점을 제외하고는 모두 품질기준에 적합한 것으로 분석되었고, 연료유와의 성상을 비교한 결과 등유와 경유 중간의 성상을 나타내었다. 따라서 혼합폐플라스틱을 열분해 처리해 생성된 오일은 연료유로 이용이 가능하므로 신재생에너지로 활용이 충분할 것으로 확인되었다.

• 한국가금학회지
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• 제33권1호
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• pp.1-6
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• 2006

본 연구는 육계에 오메가 3계열을 다량 함유한 정어리유 1%와 쑥의 급여수준(0, 1, 2, 4%)에 따라 4처리구로(T1, T2, T3, T4)구분하여 5주간 급여 후 도계하여 대퇴 부위 근육을 냉장온도$(4{\pm}1^{\circ}C)$에서 10일간 저장하면서 pH, VBN, TBARS 및 육색의 변화를 조사하였다. 증체량은 T3구에서 가장 낮았으며, pH는 대조구에 비하여 처리구에서 높았고, 저장 기간이 경과하면서 유의성 있게 상승하였다(P<0.05). VBN과 TBARS는 처리구에서 저장기간이 지남에 따라 증가하였을지라도 대조구는 처리구에 비하여 높은 경향을 나타내었다. 육색은 처리구에서 $L^*$과 $b^*$값이 대조구보다 높은 경향이었다. 이상의 실험 결과로 미루어 육계사료에서 정어리유를 1%급여시에 2%까지 첨가하면 계육의 품질 및 저장성 개선 효과가 있는 것으로 사료된다.

• 대한약침학회지
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• 제25권2호
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• pp.121-129
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• 2022

Objectives: The chemical composition of cactus pear seed oil (Opuntia ficus-indica [L.] Mill.) was analyzed in terms of its fatty acid composition, tocopherol content, phenolic identification, and the oil's phenolic-rich fraction antioxidant power was determined. Methods: Fatty acid profiling was performed by gas chromatography coupled to an FI detector. Tocopherols and phenolic compounds were analyzed by LC-FLD/UV, and the oil's phenolic-rich fraction antioxidant power was determined by phosphomolybdenum, DPPH assay and β-carotene bleaching test. Results: Fatty acid composition was marked by a high unsaturation level (83.22 ± 0.34%). The predominant fatty acid was linoleic acid (66.79 ± 0.78%), followed by oleic acid (15.16 ± 0.42%) and palmitic acid (12.70 ± 0.03%). The main tocopherol was γ-tocopherol (172.59 ± 7.59 mg/kg. In addition, Tyrosol, vanillic acid, vanillin, ferulic acid, pinoresinol, and cinnamic acid were identified as phenolic compounds in the analyzed seed oil. Moreover, the oil's phenolics-rich fraction showed a significant total antioxidant activity, scavenged DPPH up to 97.85%, and effectively protected β-carotene against bleaching (97.56%). Conclusion: The results support the potential use of cactus pear seed oil as a functional food.

• 한국식생활문화학회지
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• 제30권6호
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• pp.766-772
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• 2015

This research was conducted to investigate the effect of essential oil (EO) from Artemisia Princeps Pampanini on quality of tomato during storage. EO was extracted by steam distillation and diluted by 1 and 2%. Total phenolic contents and antioxidative activities of EO were analyzed. Tomato was packaged corrugated box covered with polypropylene (PP) film containing EO (1 and 2%) and then stored at room temperature for 10 days. During storage, appearance, weight loss rate, soluble solid contents, pH and a (redness) value were measured for tomato. Total phenolic contents of EO increased in a dose-dependence. The DPPH and ABTS radical scavenging activities also showed a concentration-dependent increase. The weight loss rate was lowest using the film packaged in 1% EO. During the storage period, soluble solid contents and pH increased in all treatments. The a value increased regardless of EO concentration in films. Especially, tomato packaged with EO film showed a lower a value than non EO-packaged ones. This result suggests that application of EO to film is effective for tomato quality preservation.

• 대한약침학회지
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• 제23권3호
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• pp.173-178
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• 2020

Objectives: Atopic dermatitis (AD) is a prevalent and chronic, pruritic inflammatory skin condition that can influence all age groups. AD is associated with a poor health-related quality of life. This randomized clinical trial was performed to compare the effectiveness of Olivederma (combination of aloe vera and virgin olive oil) or betamethasone regarding disease severity, quality of life, serum IgE and eosinophil count. Methods: Thirty-six AD patients were randomly allocated to topical Olivederma or betamethasone, and were followed for 6 weeks. Results: Total SCORAD severity scores showed significant decrease in both groups, while it was more prominent in Olivederma group (64.5% improvement in Olivederma vs. 13.5% improvement in Betamethasone, p-value < 0.001). Quality of life (DLQI questionnaire) of AD patients was significantly improved after 6 weeks treatment with Betamethasone (22.3%, p < 0.001) and Olivederma (60.7%, p-value < 0.001). Olivederma group showed a significantly lower DLQI score in comparison with Betamethasone treated patients after 6 weeks of therapy (p < 0.001). Improvements in eosinophil count and serum IgE was observed. Conclusion: In summary, this study shows that Olivederma is superior to topical Betamethasone after 6 weeks of therapy with regard to disease severity, quality of life and eosinophil count.

• 한국환경과학회지
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• 제4권3호
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• pp.207-220
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• 1995

In order to study on the long-term change of water quality, water analysis was conducted at 16 sites surrounding the Kumho river system for 11 times from September 1990 to August 1993. Analytical items for the study of water Quality are as follows; water temperature, pH, COD, BOD, DO, SS, electrical conductivity, $NH_3-N$, $NO_2^-N$, NO_3^-N$, $PO_4^{3-}-P$, total-P, hardness, oil and grease, ABS, phenol, zinc, chromium, cadmium, manganese, iron, lead and color. The long-term change of water quality in the Kumho river for the period studied was found that the values of water temperature, electrical conductivity, phenol, $NO_2^-N$ and $NH_3-N$ were increasing and those of COD, BOD, SS, oil and grease, ABS, NO_3^-N$, $PO_4^{3-}-P$, copper, zinc, chromium, cadmium, manganese and lead were decreasing, while those of pH, hardness, iron and manganese were steady.

• 해양환경안전학회:학술대회논문집
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• 해양환경안전학회 2018년도 공동국제학술발표회
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• pp.167-167
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• 2018