• 한국식생활문화학회지
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• 제22권4호
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• pp.475-481
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• 2007

This study was carried out to determine the quality characteristics of Jeju mandarin orange jelly with various gelling agent such as agar, ${\kappa}-carrageenan$ and gellan gum for the aged. The concentration of agar was 0.4-0.6% and that of ${\kappa}-carrageenan$ and gellan gum was 0.2-0.4%. The color value, gelling temperature, melting temperature, break down rate, textural properties and sensory acceptance test of Jeju mandarin orange jelly with various gelling agent were measured. Average age of the subjects for acceptance test was 78.23. Redness and yellowness of Jeju mandarin orange jelly with agar was lower than that with ${\kappa}-carrageenan$. The gelling and melting temperature of Jeju mandarin orange jelly with agar was lowest among the jellies. Break down rate of Jeju mandarin orange jelly with agar was highest among the jellies. Above results showed that the stability of Jeju mandarin orange jelly with agar was inferior than that with ${\kappa}-carrageenan$ and gellan gum. Hardness, adhesiveness and springiness of Jeju mandarin orange jelly with agar was lowest among the jellies and sensory acceptance of Jeju mandarin orange jelly with gellan gum was highest among them. Thus, gellan gum was appropriate gelling agent for the Jeju mandarin orange jelly with regard to the acceptability and the depression of sour taste in Jeju mandarin orange jelly could improve the acceptability for the aged.

• 한국식물병리학회:학술대회논문집
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• 한국식물병리학회 2003년도 정기총회 및 추계학술발표회
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• pp.120.3-121
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• 2003

Relative degree of resistance of citrus to Xanthomonas axonopodis pv. citri, the causal bacterium of canker, was investigated. Growth rate of a bacterium in leaf tissues after infiltration, disease incidence, and percent of lesion area were compared. By using growth rate[(GR=(At - A$\sub$t-1/)/A$\sub$t-1] host plants were differentiated into susceptible and resistant. Growth rates reached to peak at 40 hrs after inoculation and then declined. The growth rate in leaf tissues of a moderately susceptible cultivar, Citrus sinensis vu. Lane late(sweet orange), was the highest, and those of C. unshiu ${\times}$ C. sinensis(kiyomi), C. junos(yuzu), [(Citrus. unshiu x C. sinensis) x C. reticulata] (shiranuhi), and C. unshiu(satuma mandarin) were similar. This result indicates that the growth rate of the bacterium in leaf tissues can be effectively used for evaluation of disease resistance for citrus plants to X. axonopodis pv. citri. The disease on sweet orange occurred earlier than relatively resistant citrus plants tested. The percent of lesion area on leaf was also higher in sweet orange than those of satsuma mandarin, shiranuhi and kiyomi, and yuzu. The disease severity was highest on sweet orange and followed by kiyomi, shiranuhi, satsuma mandarin, and yuzu.

• The Plant Pathology Journal
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• 제19권4호
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• pp.205-209
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• 2003

Dispersal of citrus bacterial canker caused by Xanthomonas axonopodis pv. citri on Unshiu orange was investigated in naturally infested nursery plot at Seogwipo in Jeju island, Korea. Based on phage detection, over 2% of the bacterial pathogen over-wintered in canker lesions and started to multiply in late May. However, symptoms were first observed 1 month after the phage detection. The disease dispersed non-directionally to nearby plants possibly because of indirect dissemination of the bacterium by rain splashes. The disease increased from late June to late August and decreased thereafter. Population of phage increased constantly, however, disease occurrence somewhat fluctuated due to environmental factors. Disease incidence and severity were correlated with rainfall with wind that occurred 14-32 days earlier from late May to late August.

• 한국식품영양과학회지
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• 제34권10호
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• pp.1593-1598
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• 2005

본 연구는 제주도에서 대량 폐기되고 있는 온주밀감 부산물을 돼지에게 급여하여 폐기물의 이용 가능성과 기능성 돈육 생산을 위하여 실시하였다. 시료는 온주밀감 부산물을 급여하지 않은 등심육(TP-0), 육성기에 온주밀감 부산물을 3$\%$ 급여한 후 비육기에 5$\%$ 급여한 등심육(TP-1), 그리고 육성기에 6$\%$ 급여한 후 비육기에 10$\%$ 급여한 등심육(TP-2)을 대상으로 제반 영양성분 분석과 관능검사를 행한 결과, 수분, 조단백질, 조지방 및 조회분 함량은 시료들 사이에 차이가 없었다. 열량은 TP-1이 높았으며 , 콜레스테를 함량은 온주밀감 부산물 급여량이 증가할수록 낮았다(0 < 0.05) 무기질 중 Na은 TP-2가 낮았으며, 비타민 $B_{1}$ 및 $B_{2}$는 시료들 사이에 차이가 없었다. 총아미노산 함량은 TP-0, TP-1 및 TP-2가 각각 18.86, 20.03 및 20.44$\%$로 처리구간의 유의성은 없었다. 그리고 총유리아미노산 및 포화지방산 불포화지방산의 비율은 시료들 사이에 유의한 차이가 없었다. 육 및 가열육의 기호성은 온주밀감 부산물 급여에 의한 영향은 없는 것으로 나타났다.

• 한국식물병리학회:학술대회논문집
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• 한국식물병리학회 2003년도 정기총회 및 추계학술발표회
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• pp.121.1-121
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• 2003

Dispersal of Xanthomonas axonopodis pv. citri, causing citrus bacterial canker disease on Unshiu orange was investigated at previously infested plots at Seogwipo in Jeju island of Korea. The bacterial pathogen overwintered in lesions started to multiply at tate May, and disease firstly observed one month after detection of phage from lesions. The disease gradually increased, however, it dispersed non-directionally to nearby plants from inoculum sources. Diseased plants were aggregated to form a cluster throughout the experiment. Population dynamics of phage on symtomless leaf surface and the disease severity were compared in the nursery, Increase of phage population on symptomless leaf surface preceded one month to that of the disease severity Population of phage increased constantly from late July to October, however, the disease severity decreased from late August to late October. It was assumed that the decrease of disease severity might be due to disease-induced defoliation.

• 한국임상수의학회지
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• 제39권2호
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• pp.81-86
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• 2022

A female, 14-year-old, African penguin (Spheniscus demersus) weighing 2.5 kg with the anorexia for one day and 22 months history of bumblefoot was found dead in aquarium. Grossly, severe bumblefoot in the central surface of the right foot, severe enlarged liver and kidneys with orange color were observed. Histopathologically, pinkish amorphous materials were accumulated in liver, spleen, kidney, and stomach. The pinkish materials in the liver, kidney, spleen, and stomach were confirmed as amyloid with typical orange color reactions using Congo red stain under the light microscope and with bright red color expressions using Congo red stain under the fluorescence microscope. Based on the typical gross and histopathologic findings and special staining, this case was confirmed as systemic amyloidosis. A long period time of moderate bumblefoot might be closely associated with the occurrence of systemic amyloidosis in the captive penguin.

• 식물병연구
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• 제26권1호
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• pp.57-60
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• 2020

Citrus scab symptoms were observed on leaves of trifoliate orange (Poncirus trifoliata) in open field of Citrus Research Institute, National Institute of Horticultural and Herbal Science. Typical scab pustules were formed and they were elevated protuberances form and light brown to grey. The pathogens were isolated from the symptomatic leaves and then were identified to Elsinoë fawcettii by morphological characteristics, pathogenicity and PCR assay. The morphological characteristics of colonies formed very slow-growing, pulvinate, or raised and deeply fissured, gummy to mucoid or tomentose colonies on potato dextrose agar medium. The pathogens were pathogenic to leaves of Satsuma mandarin, lemon, sour orange and grapefruit with typical scab symptoms. In PCR assay, specific amplified of products of 717 bp with Efaw-1 and 384 bp with Efaw-2 were observed from trifoliate isolates and E. fawcettii as reference but not from E. australis. This is first report of trifoliate orange being positive for citrus scab disease.

• 한국식품영양과학회지
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• 제34권7호
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• pp.1071-1076
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• 2005

방사선 조사식품의 지용성 비타민에 대한 안정성을 확인하기 위하여 지용성 비타민 중 $\beta-carotene$, 비타민 $D_3$, $\alpha-tocopherol$을 택하여 한국인의 상용 식품이면서 각각의 급원식품인 귤, 멸치, 쇠고기에 대해 방사선조사 전후의 해당 비타민 함량을 분석하였다. 귤의 $\beta-carotene$의 함량은 조사구가 비조사구에 비해 약간 증가하는 경향을 보였으나 유의적이지는 않았다. 멸치의 비타민 $D_3$ 함량은 조사선량에 비례하여 5kGy 조사 시 $109.30\%$, 10kGy 조사 시 $125.25\%$로 증가하였다. (p<0.05). 소고기의 $\alpha-tocopherol$ 함량은 고지방 부위인 등심육의 경우 조사선량에 따라 큰 폭으로 감소되어 비조사구에 비해 10kGy 조사구에서 $84\%$의 감소율을 보였으나, 지방함량이 비교적 적은 사태육의 경우 조사구 모두에서 비조사구 대비 약 $13\%$의 감소율을 보였다. 순수 용액의 비타민 A, 비타민 $D_3,\;\alpha-tocopherol$은 조사선량에 비례하여 함량이 감소하는 것으로 나타났으며 특히, 비타민 $D_3$는 지용성 비타민 중 조사에 가장 안정한 비타민으로 나타났고, $\alpha-tocopherol$의 경우는 10kGy 처리구에서 전량 감소를 보여 지용성 비타민 중 조사에 가장 취약한 비타민으로 나타났다. 마이크로웨이브 처리구나 가열 처리구에서는 이들 지용성 비타민들의 손실이 거의 없었다. 이사의 결과로부터 10kGy이내의 방사선 조사 시, 귤의 $\beta-carotene$ 함량에는 영향을 미치는 않는 것으로 보이며, 비타민 $D_3$의 경우는 적어도 10kGy까지는 매우 안정함을 보여주었고 지방함량이 높은 등심육의 경우 $\alpha-tocopherol$의 상당한 분해가 일어남을 알 수 있었다.

• 한국식생활문화학회지
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• 제24권2호
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• pp.212-218
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• 2009

This study was carried out to determine the quality characteristics of Jeju mandarin orange jellies containing sugar (control) and sugar derivative sweeteners (erythritol, isomaltooligosaccharide, sorbitol, and xylitol) to be consumed by the elderly. The gelling agents were carrageenan and gellan gum at the concentration of 0.27%, respectively. The average age of the subjects for the acceptance test was 78. The lightness (L), redness (a), and yellowness (b) values of the carrageenan gel were higher than those of the gellan gum gel using the same sugars. The L, a, and b values of the carrageenan gel made with sugar derivative sweeteners were higher than those of the respective gel made with sugar. Whereas there were almost no differences between the color values of the gellan gum gels made with sugar and sugar derivative sweeteners, respectively. The gelling and melting temperatures of the carrageenan gel with erythritol were highest and those of the respective gel with xylitol were lowest among the sugar derivative sweeteners. The gelling and melting temperatures of the gellan gum gels with erythritol and isomaltooligosaccharide, respectively, were lower, and those of the respective gel made with xylitol were higher compared to that with sugar. There was no break down in the gellan gum gel. The break down rate of the carrageenan gel made with isomaltooligosaccharide was highest and that of the respective gel with xylitol was lowest among the sugar derivative sweeteners. The hardness, adhesiveness, springiness, and chewiness of the gellan gum gel were greater compared to the carrageenan gel. The adhesiveness levels of the carrageenan gels made with sugar derivative sweeteners were lower, and their springiness was higher than the respective gel with sugar. All the TPA characteristics of the gellan gum gels made with erythritol and xylitol, respectively, were higher than the respective gel with sugar. The rupture properties of the gels were the same as their TPA characteristics. The sensory acceptance of the carrageenan and gellan gum gels made with sugar were highest among all the sweeteners. There were no significant differences in the sensory acceptance scores of the carrageenan gels made with xylitol, erythritol, and sugar, respectively, and there were also no significant differences in the sensory acceptance scores of the gellan gum gels made with xylitol, sorbitol, and sugar, respectively. Xylitol was preferred in both the carrageenan and gellan gum gels. Thus, xylitol appears to be an appropriate alternative sweetener to sugar in Jeju mandarin orange jelly for consumption by the elderly, with regard to the acceptability and stability of the gel.

• 한국가구학회지
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• 제21권6호
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• pp.479-485
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• 2010

제주도 산지림 및 방풍림 삼나무 목재의 조직 특성, 생재함수율, 무기 함유물 농도 및 흑심재 발생률 조사를 통해 얻어진 결과는 다음과 같았다. 1. 흑심재의 발생률은 산지림의 나무에 비해 방풍림의 것에서 훨씬 더 높게 나타났다. 2. 생재함수율은 심재의 재색이 적갈색에서 흑색으로 변함에 따라 높아지는 것으로 드러났다. 3. 흑심재의 방사조직 내에 존재하는 무기 함유물인 $K_2O$와 CaO는 흑심재의 주요 형성 원인 가운데 하나인 것으로 여겨졌다. 4. 목재의 비중 및 기계적 성질은 제주도의 삼나무가 한반도 남부 지역의 삼나무에 비해 비교적 낮게 나타났지만 제주도 내의 방풍림과 산지림 나무 사이에서는 큰 차이를 보이지 않았다.