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      • SCIESCOPUSKCI등재

        포도의 관능적 품질과 객관적 품질인자 상호간의 상관성

        조순덕(Sun-Duk Cho),장민선(Min-Sun Chang),김동만(Dong-Man Kim),김건희(Gun-Hee Kim) 한국원예학회 2010 원예과학기술지 Vol.28 No.4

        In order to find correlations between the sensory evaluation and instrumental analysis in ‘Campbell Early’ grape, grapes were divided into three parts. One-half parts were used for the sensory evaluation and the other half were used as samples for instrumental analysis. Relationship between sensory evaluation and instrumental analysis were studied through correlation study using 48-paired data set obtained during storage. Soluble solid content analysis showed that instrumental quality attributes increased along the passage of storage time with increasing temperature. pH and titratable acidity decreased slightly at lower storage temperatures. Correlations between instrumental quality attributes in grapes were found to be very low. Positive correlation was found between pH and soluble solid content, and negative correlation was found between pH and titratable acidity. The relation of sourness and sweetness to sourness was higher than other sensory evaluation factors, and the shape of the grapes was found to have little relation to their sweetness. Texture (r²=0.890) was found to be the most important factor in preference, followed next by sweetness with sourness (r²=0.860). The correlations between the sensory evaluation and instrumental quality attributes were found to be very low, with overall acceptability given to a relatively high content of soluble solid content. Correlations between pH and titratable acidity in terms of overall acceptability were found to be very low.

      • KCI등재

        Effects of Supplemental Green LEDs to Red and Blue Light on the Growth, Yield and Quality of Hydroponic Cultivated Spinach (Spinacia oleracea L.) in Plant Factory

        Nguyen Thi Phuong Dung(넨티덩),Tran Thi Thanh Huyen(트란티),Dong Cheol Jang(장동철),Il Seop Kim(김일섭),Nguyen Quang Thach(넨퀸탓) (사)한국생물환경조절학회 2020 생물환경조절학회지 Vol.29 No.2

        본 연구는 폐쇄형 식물공장에서 시금치 수경재배시 세가지의 인공광이 생육, 광합성 및 품질에 미치는 영향을 규명하기 위해 수행되었다. 세가지 광 처리구는 적색 (660nm), 청색 (450nm) 및 녹색 (550nm) LED를 사용하여, R660 / B450 = 4/1 (RBL), R660 / B450 / G550 = 5/2/3 (WWL); R660 / B450 / G550 = 1/1/1 (WL) 비율로 혼합하였고, 동일한 광도로 설정하였다 (PPFD = 190 μmol‧m<SUP>-2</SUP>‧s<SUP>-1</SUP>). 생육조사결과 초장, 엽수는 WL이 가장 적었다. SPAD, 순광합성율, Fv/Fm, LAI, 근권부 생육은 RBL이 가장 높았고 통계적으로 유의하였다. 줄기, 잎, 뿌리의 생체중, 뿌리의 건물 중은 세가지 처리구에서 유의한 차이를 보였다. 대조적으로 WL의 칼륨의 함량은 WWL과 RBL 가운데 가장 높았지만, 반면 칼륨과 철의 함량은 RBL이 가장 높았다. 비타민C 함량도 시험구간 유의한 차이를 보였다. 질소와 옥살산 함량은 WL이 가장 높았고, 용해성 고체와 비타민C 함량은 RBL이 가장 높았다. 옥살산, 질소 함량은 WWL에서 감소하는 경향을 보였고, RBL의 옥살산 함량은 WL와 WWL과 차이가 없었다. 모든 처리구에서 Salmonella, E.coli. 는 감염되지 않았다. 결론적으로, RBL이 시금치의 생육에 적합하지만, 적색, 청색과 적정하게 혼합된 녹색광은 시금치의 생육에 긍정적인 영향을 미친다고 판단된다. The effect of three different light qualities on growth, photosynthesis, quality and safe parameters of hydroponic cultivated spinach (Spinacia oleracea L.) were investigated indoor. Three different light qualities were created of red (660 nm), blue (450 nm) and green (550 nm) LEDs corresponding at ratio R660/B450 = 4/1 (RBL); R660/B450/G550= 5/2/3 (WWL); R660/B450/G550 = 1/1/1 (WL), which were tested at the same intensity (PPFD =190 μmol m-2 s-1). The results showed that the plant height and leaf number were the lowest in WL treatment. The SPAD, Net photosynthesis rate Pn, Fv/Fm, Leaf area index LAI values and all parameters of root characteristics were the highest in RBL treatment and were significantly different from two others. Fresh weight of stem, leaf and root, dry weight of root in the three light qualities were significantly different. In contrast, the highest K<SUP>+</SUP> content in WL was different from WWL and RBL treatments, while Ca<SUP>2+</SUP> and Fe<SUP>2+</SUP> content were the highest in the RBL treatment. Vitamin C content was significantly different between the three treatments. nitrate and oxalic acid contents were the highest in WL treatment, whereas soluble–solids contents and vitamin C contents were the highest in RBL treatment. Oxalic acid, nitrate contents were observed tending reduced under WWL although oxalic acid content in RBL treatment was not different from WL and WWL treatments. In all three different light treatments were not detected Salmonella, E.coli. Our results suggest that RBL may be appropriate light for growth of spinach, but supplementary green light to a combination of red and blue LEDs at the reasonable rate can change the quality of spinach in a positive direction. Hydroponic cultivated spinach was safe for users.

      • KCI등재

        단호박 "보짱" 장기저장을 위한 염소수 및 구연산 전처리 효과

        박도수 ( D. S Park ),현재영 ( J. Y. Hyun ),권혜순 ( H. S. Kown ),정천순 ( C. S. Jeong ) 강원대학교 농업생명과학연구원(구 농업과학연구소) 2016 강원 농업생명환경연구 Vol.28 No.1

        단호박 ``보짱`` 장기 저장을 위한 염소수 및 구연산 전처리 후 적정 저장온도를 구명하기 위한 연구결과는 다음과 같다. 중량손실은 염소수 처리구 보다는 구연산 처리구에서 다소 많았고, 저장온도는 7℃보다는 10℃에서 적었다. 부패율은 저장 2 개월째부터 부패하기 시작하였으며, 무처리구>염소수>구연산 순으로 나타났다. 저장온도별로는 7℃ 보다는 10℃에서 저장 5 개월까지 살균 처리구에서 2% 내외로 매우 낮게 나타났다. 가용성 고형물 함량은 구연산 보다 염소수에서 높게 유지되었고, 10℃보다는 7℃에서 높았다. 그리고 저장초기(약 14°Brix)부터 저장 4 개월째(약 17°Brix)까지는 증가한 다음 감소하는 경향을 보였다. 경도는 무처리구보다 염소수처리구가 단단하였고, 10℃ 보다는 7℃에서 높게 유지되었다. 과육의 색도는 살균 처리구 간에 차이가 없었고, 7℃보다는 10℃에서 다소 높게 유지되었다. 전분함량은 수확직후에는 약 20%에서 저장 1 개월째부터 감소하였고, 저장온도 및 살균처리구간에 차이는 없었다. 단호박의 당함량은 주로 비환원당인 sucrose 가 환원당인 glucose+fructose 함량보다 약 2 배 이상 많았다. 당함량은 구연산 처리구에서 타 처리구보다 감소폭이 많았고, 10℃ 저장보다는 7℃ 저장에서 높게 유지되었다. 총페놀함량은 저장기간 및 살균처리 구간에서 일정한 경향은 없었지만, 저장 6 개월까지 점증하는 경향을 나타냈다. This study was done to investigate proper long term storage temperature of squash ``Bochang`` after pre-treatment with NaOCl and citric acid. Weight loss was somewhat higher in citric acid treatment group than NaOCl treatment and it is lower in 7℃ than 10℃ treatment. Decay rate the loss percentage after 2 months, it appeared as Untreated > NaOCl > citric acid. In both sterilization treatment groups, storage at 10℃ is better than 7℃ and stored up to 5 months with very low difference of about 2%. Soluble solids content was higher in NaOCl treatment than citric acid and it was higher in 7℃ than 10℃. At the beginning of storage total soluble solids content (TSS) was about 14°Brix and 4 months after storage it was reached about 17°Brix and then a decreasing trend was observed. Higher firmness values were observed in NaOCl treatment than control and treatments in 7℃ were firmer than 10℃. No significant difference was observed among the sterilization treatments regarding flesh color, a slightly higher values were recorded in 10℃ than 7℃. Starch content immediately after harvest was about 20% and reduced after 3 months storage, no significant difference was observed in storage temperature and sterilization treatments. Squash sugar content is mainly non reducing sugar sucrose and reducing sugar (glucose+fructose) were about 2 times of the content. The decline in sugar content was higher in citric acid treatment than the others and it was higher in 7℃ than 10℃. Even though; there exist no certain data regarding total phenolic content during storage period and sterilization period, it showed a tendency to an increasing storage 6 months.

      • 사과 쓰가루의 과대지가 과일의 특성에 미치는 영양

        오수옥,이상현,조정안,김영,김월수 全南大學校 農業科學技術硏究所 2001 農業科學技術硏究 Vol.36 No.-

        This study was conducted to investigate the effect of bourse shoots on the fruit growth and development, mineral content and quality of apples. Three hundred bourse shoots bearing fruits were selected from 10 trees randomly in the experimental orchard of Chonnam National University, Naju, Southwestern Korea. Bourse shoot length and fruit diameter were measured at twice on July 20 and August 20 of 2001. Harvested fruits were divided into 6 groups according to bourse shoot length; 0㎝, 11 to 20㎝, 21 to 30㎝, 31 to 40㎝, and longer than 41㎝. Fruit characteristics such as (soluble solid content, flesh firmness and acidity) were measures just after the harvest. The contents of Ca, Mg and K were analyzed of fruit peel, flesh and core tissues. Most bourse shoots stopped growing after late June, while water-sprouting shoots stopped after late July. Results showed that fruit L/D ratio was higher when bourse shoots were 31 to 40㎝ in length. Especially soluble solid content and fruit firmness were higher in the fruits of bourse shoot 21 to 30㎝ in length. Calcium contents of the fruits also were higher in flesh and skin tissues when length of bourse shoots was 21 to 30㎝, while no significant differences were observed in other mineral contents.

      • KCI등재

        Compositional differences of Bojungikgi-tang decoctions using pressurized or non-pressurized extraction methods with variable extraction times

        Kim, Jung-Hoon,Seo, Chang-Seob,Kim, Seong-Sil,Shin, Hyeun-Kyoo The Korea Association of Herbology 2013 大韓本草學會誌 Vol.28 No.4

        Objectives : In other to determine the optimal extraction conditions, the various Bojungikgi-tang (BJIGT) decoctions prepared by different pressure levels and different extraction times were compared and evaluated in terms of the extract yield and the total soluble solid content. Methods : Decoctions were prepared by the pressure levels of 0 (non-pressurized) and 1 $kgf/cm^2$ (pressurized) for 60, 120 and 180 min. The extract yield and the total soluble solids content of decoctions were measured, and the amounts of the reference compounds in decoctions were investigated by the analysis using high performance liquid chromatography. Results : The extract yield and the total soluble solid content were higher in decoctions extracted by the pressurized method than those from decoction with non-pressurized method. The patterns of yield and contents showed a proportional increase to the extraction time. In analysis of the linear regression for four reference compounds such as liquiritin, nodakenin, hesperidin, and glycyrrhizin, the good linearity with the correlation coefficient more than 0.9999 was observed. The highest contents for four reference compounds were observed at 180 min of both the pressurized method and the non-pressurized method. Conclusions : This study suggests that the pressure in extraction method and the extraction time affect the compositional constituents in BJIGT decoctions. The extraction time of 180 min could be chosen in both pressurized and non-pressurized method as optimal extraction condition.

      • KCI등재

        Compositional differences of Bojungikgi-tang decoctions using pressurized or non-pressurized extraction methods with variable extraction times

        김정훈,서창섭,김성실,신현규 대한본초학회 2013 大韓本草學會誌 Vol.28 No.4

        Objectives : In other to determine the optimal extraction conditions, the various Bojungikgi-tang (BJIGT) decoctions prepared by different pressure levels and different extraction times were compared and evaluated in terms of the extract yield and the total soluble solid content. Methods : Decoctions were prepared by the pressure levels of 0 (non-pressurized) and 1 kgf/cm2 (pressurized) for 60, 120 and 180 min. The extract yield and the total soluble solids content of decoctions were measured, and the amounts of the reference compounds in decoctions were investigated by the analysis using high performance liquid chromatography. Results : The extract yield and the total soluble solid content were higher in decoctions extracted by the pressurized method than those from decoction with non-pressurized method. The patterns of yield and contents showed a proportional increase to the extraction time. In analysis of the linear regression for four reference compounds such as liquiritin, nodakenin, hesperidin, and glycyrrhizin, the good linearity with the correlation coefficient more than 0.9999 was observed. The highest contents for four reference compounds were observed at 180 min of both the pressurized method and the non-pressurized method. Conclusions : This study suggests that the pressure in extraction method and the extraction time affect the compositional constituents in BJIGT decoctions. The extraction time of 180 min could be chosen in both pressurized and non-pressurized method as optimal extraction condition.

      • KCI등재

        Compositional differences of Bojungikgi-tang decoctions using pressurized or non-

        ( Jung Hoon Kim ),( Chang Seob Seo ),( Seong Sil Kim ),( Hyeun Kyoo Shin ) 대한본초학회 2013 大韓本草學會誌 Vol.28 No.4

        Objectives : In other to determine the optimal extraction conditions, the various Bojungikgi-tang (BJIGT) decoctions prepared by different pressure levels and different extraction times were compared and evaluated in terms of the extract yield and the total soluble solid content. Methods : Decoctions were prepared by the pressure levels of 0 (non-pressurized) and 1 kgf/㎠ (pressurized) for 60, 120 and 180 min. The extract yield and the total soluble solids content of decoctions were measured, and the amounts of the reference compounds in decoctions were investigated by the analysis using high performance liquid chromatography. Results : The extract yield and the total soluble solid content were higher in decoctions extracted by the pressurized method than those from decoction with non-pressurized method. The patterns of yield and contents showed a proportional increase to the extraction time. In analysis of the linear regression for four reference compounds such as liquiritin, nodakenin, hesperidin, and glycyrrhizin, the good linearity with the correlation coefficient more than 0.9999 was observed. The highest contents for four reference compounds were observed at 180 min of both the pressurized method and the non-pressurized method. Conclusions : This study suggests that the pressure in extraction method and the extraction time affect the compositional constituents in BJIGT decoctions. The extraction time of 180 min could be chosen in both pressurized and non-pressurized method as optimal extraction condition.

      • KCI등재

        ‘Shine Muscat’ 포도의 적정 착과량 및 수확기준 설정

        김준혁,정명희,박요셉,이별하나,박희승 한국원예학회 2019 원예과학기술지 Vol.37 No.2

        The aim of this study is to ascertain suitable harvesting time and yields for the development of colorchart for the establishment of harvesting standard based on the skin color of ‘Shine Muscat’ grapes. The experiment was conducted at an orchard in Cheonan, Gyeonggi-do, Korea and clusters per vinewere set to harvest 1,800 kg, 2,100 kg and 2,400 kg per 10 a. Even though the yield was increasedup to 2,400 kg per 10 a, there was no difference in the size of the fruit. However, with regard to fruitquality, grapes controlled to 2,400 kg per 10 a had lower soluble solids content, poorer coloring,higher acidity and hardness compared to other grapes controlled to 1,800 kg and 2,100 kg. Also, thechlorophyll content of grapes controlled to 2,400 kg per 10 a was higher compared to other grapes. Accordingly, for ‘Shine Muscat’ grape cultivation, it is considered that controlling the yield to lessthan 2,100 kg per 10a is effective in terms of fruit quality. Soluble solids content in grapes controlledto 1,800 kg and 2,100 kg per 10 a, exhibited a continuous increase with progress in ripening. Theacidity and soluble solid-acid ratio remained unchanged for about 110 days after full bloom. Also,the color stage reached the peak at 120 days after full bloom. Therefore, it is considered thatcontrolling the yield of ‘Shine Muscat’ grapes to within 2,100 kg per 10 a and harvesting 120 daysafter full are effective in meeting both productivity and fruit quality. To develop a color chart for thematured determination of ‘Shine Muscat’ grapes, the growing period was divided into 5 stages andbased on these stages; fruit quality and pigment content were compared. A color chart was made bydetermining the appropriate range of soluble solids content and acidity. 본 연구에서는 국내에서 재배되고 있는 ‘Shine Muscat’ 포도의 적정 착과량과 수확기를 구명하고, 과피색을 기준으로 한 숙기 판정용 칼라 차트를 개발하고자 하였다. 경기도 천안 소재 농가 포장에서 실험을 수행하였으며, 생산량은 10a당 1,800,2,100, 2,400kg으로 조절하였다. 10a당 2,400kg까지는 생산량이 증가해도 과실 크기에 차이가 없었으나, 과실 품질은 10a당188 Horticultural Science and Technology‘Shine Muscat’ 포도의 적정 착과량 및 수확기준 설정2,400kg 생산구가 다른 생산구에 비해 가용성 고형물 함량이 낮고 산 함량과 경도가 높으며 착색이 불량한 것으로 조사되었다. 엽록소 함량 또한 10a당 2,400kg 생산구가 다른 생산구에 비해 높게 조사되어, 고품질 과실 생산을 위해서는 ‘Shine Muscat’포도 재배 시 생산량은 10a당 2,100kg 이내로 조절하여야 할 것으로 생각되었다. 1,800kg 및 2,100kg 생산구의 시기별 과실 품질에 있어서 가용성 고형물 함량은 성숙이 진행될수록 계속해서 증가하였으며, 산 함량 및 당산비 모두 성숙이 진행될수록 계속 증가하다가 만개 후 110일 이후부터는 변화 없이 일정하게 유지되었다. 반면에 착색은 만개 후 120일에 최고치에 도달하였다. 따라서 ‘Shine Muscat’ 포도 재배 시 생산량을 10a당 2,100kg 이내로 조절하여, 만개 후 120일 이후에 수확하는 것이 생산성과 과실 품질을 동시에 충족시키는 데 효과적일 것으로 생각된다. ‘Shine Muscat’ 포도의 숙기 판정용 칼라 차트를 개발하기위해, 생육기를 5 단계로 구분하여, 이러한 단계들을 기준으로 과실의 품질과 색소 함량을 비교하였으며, 가용성 고형물 함량과 산 함량의 적정 범위를 구하여 칼라 차트를 작성하였다.

      • KCI등재

        머스크멜론의 유통 중 신선도 판정을 위한 품질 지표 선정

        김지영 ( Ji Young Kim ),권기현 ( Ki Hyun Kwon ),구경형 ( Kyung Hyung Gu ),김병삼 ( Byeong Sam Kim ) 한국식품저장유통학회(구 한국농산물저장유통학회) 2011 한국식품저장유통학회지 Vol.18 No.6

        This study was conducted to identify quality indicators to determine freshness of muskmelon during distribution. The correlation between each quality characteristic and organoleptic preference was analyzed after examining weight loss, firmness, soluble solid content, chromaticity, and respiration rate of and changes in the organoleptic characteristics during storage at 0, 10, 20 and 30℃ after harvesting. The correlation between weight loss and preference according to the storage temperature was shown to be significant (p<0.01). The correlation between firmness and preference was shown to be highly significant (R=0.74, 0.78, 0.88, and 0.83 at 0, 10, 20, and 30℃) under all temperature conditions, and was shown to beespecially highly significant (p<0.01) when the temperature was high. In the case of storage at 20 and 30℃, a significant correlation between soluble-solid content and preference was shown. Therefore, it is right to apply the change in weight loss and firmness that indicated a high correlationwith organoleptic preference as a quality indicator at all storage temperatures.

      • SCIESCOPUSKCI등재

        Effect of Different Rootstocks on Wilting Occurrence, Plant Growth, and Fruit Quality of Melon

        Joo Hyun Lee(이주현),Joon Kook Kwon(권준국),Kyoung Sub Park(박경섭),Yun Chan Huh(허윤찬),Chai Il Lim(임채일),Dong Kum Park(박동금),Kwan Dal Ko(고관달) 한국원예학회 2009 원예과학기술지 Vol.27 No.2

        Key growing characteristics of melon cultivars, ‘Homerunstar’ and ‘Earl’s elite’ were investigated after they were grafted onto Cucurbita rootstocks ‘Gangguntozwa’, ‘Shintozwa’, ‘Teuktozwa’, ‘Joinus’, ‘Rainbow’, ‘Ace’, and ‘Elite’. Significantly different results were obtained in wilting incidence, plant growth, fruit quality and fruit yield depending on various rootstocks. No wilting symptom was observed when cultivar ‘Homerunstar’ was grafted onto ‘Gangguntozwa’, ‘Teuktozwa’ and ‘Ace’ rootstocks, whereas the symptom occurrence was 83, 55, 22, and 16%, respectively, when grafted onto ‘Rainbow’, ‘Elite’, ‘Joinus’, and ‘Shintozwa’. Occurrence of wilting symptom was 100% when the cultivar was grown without grafting. The occurrence of wilting symptom in cultivar ‘Earl’s elite’ was 6% when it was grafted onto ‘Elite’ and ‘Joinus’ rootstocks, whereas it was 72% when the cultivar was grafted onto ‘Rainbow’ rootstocks. The highest soluble-solid content (°Brix) was observed when cultivar ‘Earl’s elite’ was grafted onto ‘Ace’ or ‘Joinus’. When the cultivar ‘Homerunstar’ was grown without grafting, the soluble-solid content was 1 °Brix higher than that of grafted one; however, a higher ratio of sucrose to glucose+fructose (S/G+F) was observed in the fruit. Total fruit yield was higher when the two cultivars were grafted onto ‘Gangguntozwa’, ‘Shintozwa’, ‘Teuktozwa’, and ‘Ace’ rootstocks than those of non-grafted ones. These results suggest that the best rootstock for cultivar ‘Homerunstar’ is ‘Teuktozwa’ and for cultivar ‘Earl’s elite’ is ‘Ace’.

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