• Proceedings of the Korean Society for Food Science of Animal Resources Conference
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• 2004.10a
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• pp.188-191
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• 2004

본 실험은 돈육 후지 부위를 이용하여 육포를 제조하는 과정에서 침지 시간에 따른 육포의 물리적, 이화학적 특성 및 관능적 특성을 조사하여 육포제조 방법을 더욱 표준화 하고자 실시하였다. 침지시간에 따른 돈육 후지의 침지수율은 시간이 경과함에 따라 유의적으로 높아졌고 pH는 침지시간에 따라 차이가 없었으며 보수력은 유의적으로 높았다. 육색은 $L^{\ast}$, $a^{\ast}$, $b^{\ast}-value$ 모두에서 침지시간이 경과함에 따라 유의적으로 낮아졌다. 건조하여 제조된 육포의 건조수율은 침지시간이 경과함에 따라 유의적으로 높아졌으나 수분함량은 차이가 없었으며. 육색은 $L^{\ast}$, $a^{\ast}$, $b^{\ast}-value$ 모두 침지시간이 길어짐에 따라 유의적으로 낮아졌다. 조직감 측정은 12시간 침지한 육포의 hardness가 높았으며 24시간 침지한 육포의 springiness가 높았고 48시간 침지한 육포의 cohesiveness, gumminess, chewiness가 전체적으로 높은 값을 보였다.

• Journal of Bio-Environment Control
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• v.19 no.1
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• pp.55-62
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• 2010

This study was conducted to find out the effect of diniconazole treatment by seed soaking on the stretching of tomato and cucumber seedlings. The emergence rate of tomato and cucumber seed was decreased as diniconazole concentration was higher and soaking period was longer. The emergence rate of tomato seedlings was lower as the soaking period was longer in $1mg{\cdot}L^{-1}$ concentration treatments, although there was no significant difference. The other concentration treatment (10, 50, and $100mg{\cdot}L^{-1}$) reduced emergence rate of tomato seedlings outstandingly in higher concentration and longer treated period, but 90% of treated seeds emerged at 10 days after sowing. As the concentration of diniconazol was higher and soaking period was longer, plant height and growth rate of seedlings were retarded. There covery of internodes growth was faster in lower concentration and shorter soaking period. The top and root fresh weight and dry weight of tomato and cucumber seedlings was not influenced by $1mg{\cdot}L^{-1}$ concentration, but these growth characteristics were reduced in higher concentration and longer soaking period. The dwarfed cucumber seedlings treated by diniconazol showed normal growth rate after planting and their male and female flower was set normally. These results suggest that the proper concentration and soaking period of diniconazol may be $10mg{\cdot}L^{-1}$ concentration for 12 hours in tomato seed, and $1mg{\cdot}L^{-1}$ concentration for 24 hours in cucumber seed.

• Journal of agriculture & life science
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• v.46 no.5
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• pp.37-45
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• 2012

This study was carried out to examine the optimal treatment conditions of ethanol and glycerine for processing technology development of preserved flowers in carnation (Dianthus caryophyllus) 'Desio' commonly used for flower design. For this purpose, effects of dipping duration of ethanol solution and treatment duration and concentration of glycerine on preserved flower quality were evaluated. Ethanol treatment resulted in perfect dehydration and decoloration of petals and it was proper at 24~48 hours under high brightness and low chroma. Appropriate concentration and time of glycerine treatment was 30% at 36 hours because it resulted in Munsell value of 4.0R in Hue, 6.49 in Value, and 19.8 in Chroma (4.0R 6.49/14) representing the most approximate value to that of fresh petals. Decreasing rate in weight after desiccation tended to reduce by longer time of immersing and higher concentration. Weight after 12 hours of immersing reduced up to 86~90% according to treatment time in non-treatment group of glycerin, meanwhile, it reduced up to 51~69% under higher concentration of 40%. However, weight after 48 hours of immersing reduced up to 90% regardless of desiccation time in non-treatment group of glycerine, to the contrary, decreasing rate reduced by 46~54% through glycerine treatment of 40%. Time for desiccation required 24 hours in glycerin concentration of 10~20% except 6 hours of immersing time, however, higher concentration resulted in increased time up to 48 hours.

• Journal of the Korean Society of Food Science and Nutrition
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• v.24 no.6
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• pp.937-942
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• 1995

Cutting force, degree of cooking, cooking loss and absorbances of cooking solution of three cultivars of Korean kidney beans, Pink(PKB), Red(RKD) and White(WKB) were compared. The cutting force of raw kidney bean was 23,500~27,000g. The optimum soaking conditions to give the same cutting force of beans were 10hr at $10^{\circ}C,\;8hr\;at\;20^{\circ}C,\;6hr\;at\;30^{\circ}C\;and\;3hr\;at\;40^{\circ}C$. At optimum soaking conditions, the degree of cooking was determined by measuring the maximum cutting force of cotyledon. The terminal points of cooking at $98^{\circ}C$ were 23min for PKB, 25min for RKB and 27min for WKB. Cooking loss of kidney beans during cooking were 3.4~5.4%. Absorbances of cooking solution showed a similar pattern in all samples, except PKB soaked at $10^{\circ}C$ for 10hr.

• Journal of Korean Society of Forest Science
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• v.99 no.3
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• pp.423-431
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• 2010

To determine physical and physiological factors for Liriodendron tulipifera L. somatic embryo germination, temporary immersion bioreactor (TIB) system was investigated. It was designed to immerse liquid media with plantlets so that it was able to adjust the immersion time. Immersion of 120 minutes every 4 hours and 60 minutes every 4 hours was found to be effective in germination (91.64%, 85.67%, respectively). However, hyperhydricity of the plantlets was higher in short immersion time (15 minutes every 6 hours) and long immersion time (120 minutes every 4 hours) (51.61%, 34.28%, respectively). Immersion of 60 minutes every 4 hours showed the lowest hyperhydric plantlets, and also it showed the lowest activities of abscisic acid (ABA), superoxide dismutase (SOD), and catalase. The overall results implied that immersion time of media affected germination and growth of somatic embryo, and it was able to make use of germination and growth of L. tulipifera somatic embryos.

• Korean Journal of Plant Resources
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• v.20 no.5
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• pp.398-403
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• 2007

This study was carried out to enhance germination of the seed by different immersion temperatures(15, 20, 25, 30 and $35^{\circ}C$) and times(1, 6, 12, 18, 24, 36 and 48 hours) in Cryptomeria japonica that is a major plantation species in the southern Korea. Optimum germination temperature was between $20^{\circ}C$ and $25^{\circ}C$, and the lowest germination was observed at $35^{\circ}C$ Moisture absorption increased with increasing immersion time as a whole and was high at $30^{\circ}C$ and $35^{\circ}C$. Initial moisture absorption rate was highest at $30^{\circ}C$ whereas was lowest at $15^{\circ}C$ Moisture absorption rate constant was also high at $30^{\circ}C$ and $35^{\circ}C$, however, it was relatively low at $15^{\circ}C$ and $20^{\circ}C$ Germination was the highest when the seeds were immersed for 48 hours at $30^{\circ}C$. In mean germination time(MGT) the seeds immersed for 48 hours at $30^{\circ}C$ did not differ from non-treatment, while the others showed higher values than non-treatment. Consequently, germination could be enhanced and MGT was kept by optimum immersion temperature and time.

• The Korean Journal of Malacology
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• v.31 no.3
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• pp.179-186
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• 2015

The Pacific oyster Crassostrea gigas oocytes were exposed to 4 cryoprotectants, dimethyl sulfoxide (DMSO), ethylene glycol (EG), methanol, or polyethylene glycol (PEG), each with 4 four concentrations (5, 10, 15, and 20%) and for 10, 20, 30 or 40 minutes for permeation. The oocytes were then fertilized, using normal sperm of the species. Fertilization and hatching rates were clearly influenced by cryoprotectant species and their concentration and permeation time. Overall, they decreased as concentrations and permeation time of cryoprotectants increased with optimum results at concentrations of 5-10% and a permeation time of 10 minutes. Larval abnormalities, a sign of the chemical damage, were a representative phenotype which was higher at a higher concentration and longer duration of the chemicals. In conclusion, best result was from 5% DMSO exposure for 10-20 minute permeation.

• Korean Journal of Food Science and Technology
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• v.20 no.2
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• pp.256-262
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• 1988

During soaking of 4 varieties of Korean soybeans in water at $4-98^{\circ}C$, an equilibrium state was reached after 3 hr at $60-98^{\circ}C$ but no equilibrium state was observed at $4-40^{\circ}C$ during soaking for 10 hrs. The moisture gain of soybeans held a linear relation with the square root of soaking time regardless of soaking temperatures, which indicated that the basic mechanism of water absorption was diffusion of water. The log time to reach a fixed moisture content showed a linear relation with the soaking temperature during soaking of soybeans at $4-60^{\circ}C$. The z-value decreased in proportions to the increase of hydration. The z-value to reach 50% hydration was the same in all soybeans.

• Journal of the Korean Society of Food Science and Nutrition
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• v.44 no.7
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• pp.1035-1040
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• 2015

4-Hexylresorcinol (4-HR) has been used for prevention of melanosis in shrimp. Recently, 4-HR in EU and other countries was authorized with maximum residue levels of 1~2 mg/kg but remains unauthorized in Korea. Therefore, the aim of this study was to investigate the effect of 4-HR on melanosis inhibition and residual levels in Korean shrimp according to various concentrations and soaking times. We previously reported that the HPLC-FLD method can be used for detection of 4-HR at maximum levels of 1~2 mg/kg in shrimp. Our results show that residual levels of 4-HR in peeled and unpeeled shrimps were in the range of 0.86 to 13.46 mg/kg and 0.02 to 2.33 mg/kg, respectively. In addition, 4-HR treatment at concentrations of 10 and 20 mg/L for 72 h were effective for inhibition of melanosis in peeled shrimp compared with unpeeled shrimp. These results provide basic data for the establishment of guidelines and regulation related to 4-HR.

• Journal of the Korean Society of Fisheries and Ocean Technology
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• v.38 no.3
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• pp.202-208
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• 2002

Test fishing was carried out utilizing a coastal pot-fishing boat from IS March to 7 April 2002 and the results obtained are summarized as follows ; 1. Mean catches(Number of sea eels) according to the soak time of 3 hours, 6 hours and 12 hours were 44.6, 60.0 and 83.3, and CPUE(Number of catch / 10pots·hour) were 2.5, 1.7 and 1.1 respectively 2. Catch difference between over 24 hours and 48 hours was 11.3% and 3.3% between over 48 hours and 72 hours. 3. In the test fishing, by-catches were so low(1.5∼3%) until 12 hours of soaking time passed By-catches were increased according to the soaking time addition on the over 24 hours of soaking time. The bait effect for sea-eel seems to be diminished as soon as the casting started and there was big difference in proportion to bait size and freshness.