• Title/Summary/Keyword: eggs development

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Promotion and Utilization of Eggs according to Egg Dish Preference among University Students (수도권 일부 남녀 대학생의 달걀요리 선호도와 이용실태에 따른 활용 촉진)

  • Han, Su-Jin;Lee, In-Sook;Kang, Eun-Zoo;Ahn, Hyo-Ri;Om, Ae-Son
    • Journal of the FoodService Safety
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    • v.2 no.1
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    • pp.30-35
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    • 2021
  • This study was conducted to understand the perception and the usage pattern of egg dishes in university students. The questionnaires were collected from 200 university students residing in Seoul. The age group was 118 (59.0%) in 20s, 50 (25.0%) in 30s, and 32 (16.5%) in 40s and older. Also, 179 (89.5%) were undergraduate students and 21 (10.5%) were graduates. The result of food preferences in the overall survey was as follows: Meats and Poultry (4.46±1.03) > Seafoods (2.92±1.41) > Fruits (2.91±1.17) > Eggs (2.50±1.10) > Vegetables (2.21±1.17). The preference of foods using eggs as the main ingredient was as follows: Rolled egg (4.07±0.81) > Steamed egg (4.05±0.91) > Scrambled egg (3.83±1.03) > Rice omelet (3.77±1.03). The preference of foods using eggs as sub-ingredient was Egg in Ramyeon (4.11±1.08) > Fried egg over Bibimbob (3.87±0.91) > Sliced boiled egg in Naengmyeon (3.78±1.11). The preference of eggs as desserts was Egg tart (4.01±1.08) > Sponge cake (3.72±1.09) > Egg bread (3.63±1.13). The result of the frequency of eating eggs indicating that approximately two-thirds of university students consumed eggs more than 3 times a week. Although there was no significant difference, male students not only consumed eggs more frequently than female students, but also consumed a higher amount. In recent years, since one-person household in college students tends to increase, it is more important to save cooking time and food quality. Thus, the development and dissemination of various egg recipes should be prioritized for university students.

Study on the Development and Functional Characteristics of Salted Egg with Liquid Smoke

  • Putri Widyanti Harlina;Tri Yuliana;Fetriyuna;Raheel Shahzad;Meihu Ma
    • Food Science of Animal Resources
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    • v.43 no.3
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    • pp.471-490
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    • 2023
  • In this study, the duck eggs were salted with none or 2.5% and 5.0% (v/v) of liquid smoke (LS), respectively. As a control, samples salted without LS were used. The 2-thiobarbituric acid (TBA) values, 1-diphenyl-2-picrylhydrazyl (DPPH) radical scavenging ability, and reducing power of the three groups were tested at 0, 7, 14, and 21 and 28 days to determine the effects of LS on the antioxidant activity of treated eggs. In addition, gas chromatography-mass spectrometry (GC-MS) and electronic nose (E-Nose) were used to analyze the volatile flavor components of fresh duck eggs, LS, control, and salted duck eggs enriched with 2.5% (v/v) LS after 28 days of salting. The TBA value considerably increased with an increase in salting period, and the treated egg's TBA value significantly associated with LS concentration. The TBA value decreased as the LS concentration increased. The amount of LS present was highly associated with their capacity to scavenge DPPH radicals. The reducing power of the samples was substantially correlated with the LS concentration, and the reducing power increased with increasing LS concentration. The GC-MS data revealed that phenols and ketones were the predominant chemicals present in the LS, and they were also found in the eggs added to the LS even though they were absent in the fresh eggs and control. The flavor of the control group and treated eggs with LS differed significantly, according to the principal component analysis and radar map of the E-nose. The texture study results revealed that the LS significantly impacted the hardness, cohesiveness, and chewiness of eggs.

Egg Development and Early Life History of Korean Endemic Species, Acheilognathus majusculus (Acheilognathinae) (고유종 큰줄납자루, Acheilognathus majusculus의 난 발생과 초기생활사)

  • Kim, Chi Hong;Choi, Wung Sun;Kim, Dae Hee;Beak, Jae Min
    • Korean Journal of Ichthyology
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    • v.26 no.1
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    • pp.17-24
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    • 2014
  • The egg development and early life history of Acheilognathus majusculus which is Korean endemic species from Yeong river were observed under the controlled water temperature, $18.0{\pm}1.0^{\circ}C$. Fertilized eggs are opaque yellow in color and round oval shaped measuring 2.12 (2.08~2.18) mm in length and 1.86 (1.80~1.98) mm in breadth. The number of eggs averaged 72 (40~112) per an oviposition. The eggs of this species began to hatch about forty three hours after insemination and the total length of larvae was 4.23 mm mean. S form moving of larvae were not observed during larval development. The larvae reached at the heterotrophic stage about twenty-five days after hatching. It is estimated that the larvae was comming out from freshwater bivalve since that time in nature. A. majusculus was grew up to be adult stage enough which can be join to new production for three hundred days after hatching with over 67.8 mm in total length.

Embryonic Development of Fertilized Eggs of Convict Grouper (Hyporthodus septemfasciatus) ♀×Giant Grouper (Epinephelus lanceolatus) ♂ (능성어 (Hyporthodus septemfasciatus) ♀×대왕바리 (Epinephelus lanceolatus) ♂ 수정란의 난발생)

  • Noh, Choong Hwan;Yoon, Nak Jin
    • Korean Journal of Ichthyology
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    • v.31 no.1
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    • pp.23-29
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    • 2019
  • The embryonic development and hatchability of the artificially fertilized eggs of convict grouper (Hyporthodus septemfasciatus) ♀${\times}$giant grouper (Epinephelus lanceolatus) ♂ (CGGG) were compared to those of the maternal pure species (convict grouper ♀${\times}$♂, CG) to establish a novel grouper hybrid for aquaculture industry. The fertilized eggs were divided into nine 5-L beakers (3,000~5,000 eggs/beaker) filled with UV sterilized seawater and incubated at a temperature range of $23.5{\sim}24.8^{\circ}C$ (32.1~32.8 psu). The percentages of fertilization and hatching of CGGG were $69.4{\pm}1.5%$ and $59.0{\pm}5.1%$, respectively and were significantly lower than those of CG (p<0.05). The CGGG proceeded normal embryonic development similar to that of CG, but showed an irregular cleavage, immature embryonic body and spinal deformity in hatched larvae. The incubation time from fertilization to hatching of CGGG was 31 hrs, which was approximately 2 hrs slower than that of CG. Our study provided the possibility of mass production of grouper hybrid CGGG larvae.

Spawning Density and Recruitment of Janpanese Anchovy, Engraulis japonica in the Southern Sea of Korea in 2007 (2007년 남해안 멸치의 산란밀도와 어장가입)

  • CHA, Byung Yul;Yang, Won Seok;Kim, Joo Il;Jang, Sun Ik;Chu, Eun Kyeong;Park, Ju Sam
    • Korean Journal of Ichthyology
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    • v.20 no.3
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    • pp.190-197
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    • 2008
  • Spatio-temporal distribution of eggs and larvae of Japanese anchovy Engraulis japonica in the southern sea of Korea was determined using data obtained from icthyoplanktonic surveys and oceanographic observations between Goheung Peninsula and Goeje Island from May to August 2007. Commercial anchovy catch and size composition from four local fishery cooperative associations were also analyzed in relation to the geographic distribution of eggs and larvae. The abundance of anchovy eggs increased from May to July and was lowest in August. Eggs were mainly distributed between Namhae Island and Goeje Island, where water temperatures were $15{\sim}24^{\circ}C$ and salinities were 32~35‰. In 2007 anchovy landings between Namhae Island and Goeje Island were 11,409 tons at Tongyeong association, 4,137 tons at Masan association, and 2,487 tons at Sacheon association. However, landings between Goheung and Yeosu Peninsula were only 4,411 tons (at Yeosu association). The catch by anchovy tow net was high in the area where eggs were abundantly distributed. This indicates that the distribution of egg density was directly correlated with recruitment of E. japonica. All growth stages were abundant in the study area, indicating that this area is a major spawning and growing ground of E. japonica in Korean waters.

Preimplantation Development and Apoptosis of Mouse Embryos in the Medium Containing Extracellular Matrix (Extracellular Matrix 배지에서 생쥐 배아의 발생 및 아폽토시스)

  • Kang, Byung-Moon;Sohn, In-Pyo;Chung, Byung-Mok;Choi, Kyoo-Wan;Gye, Myung-Chan
    • Clinical and Experimental Reproductive Medicine
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    • v.27 no.3
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    • pp.253-259
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    • 2000
  • Objective: To verify the effect of Matrigel, a ECM complex from Engelbreth-Holm-Swarm (EHS) mouse sarcoma on the preimplantation development and apoptosis of mouse fertilized eggs. Method: Late pronucleus stage eggs were cultured through the blastocyst stage in the presence of Matrigel (0.5%, v/v). Characteristics of apoptosis and cell number assesed by Hoecst staining and TUNEL labeling at the blastocyst stage, respectively. Results: Morphological development, number of cells per embryo was significantly increased but rate and number of TUNEL positive nuclei of the embryo were decreased in the presence of Matrigel. Conclusion: This result suggested that at low concentration of Matrigel improves both viability and morphological development in the preimplantation mouse embryos.

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Serum Antibody Ig G and Ig M Titers for Opisthorchis felineus Correlate with Eggs in Faeces - a Comprehensive Study in Chuvash Republic, Russia

  • Emelianov, Vladimir U;Skvortsova, Tatiana;Mikhailova, Lilia V;Shamitova, Elena N
    • Asian Pacific Journal of Cancer Prevention
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    • v.17 no.1
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    • pp.281-283
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    • 2016
  • The Cholangiocarcinoma is a. The risk of development of cholangiocarcinoma, generally a rare type of a liver tumor, increases during infection of Opisthorchiasis. For this reason the timely detection of Opisthorchiasis is important for Cholangiocarcinoma prevention. There are many studies which concern the detection of pathogenesis of Opisthorchis viverrini infection but a little known about Opisthorchis felineus. In this study we investigate a correlation of the eggs which are found in a faeces and are comparable with a serum Ig G and Ig M antibody level that were detected with ELISA test in a large group of patients. The result is showing positive correlation between evidence of the Opisthorchis felineus eggs that were found in a faeces and antibody Ig G and Ig M level in a serum. Moreover the combination of two methods can improve the Opisthorchiasis diagnostic: the serum antibody and faeces investigation of eggs.

Developmental Speed of Hybrid Fertilized Egg Between Olive Flounder Paralichthys olivaceus Female and Starry Flounder Platichthys stellatus Male at Different Water Temperatures and Larval Growth (넙치(Paralichthys olivaceus) 암컷과 강도다리(Platichthys stellatus) 수컷 잡종에서 수정란의 수온별 발생속도 및 자어 성장)

  • Do, Yong Hyun;Min, Byung Hwa;Choi, Myeoung Lyeoul;Lim, Han Gyu
    • Korean Journal of Fisheries and Aquatic Sciences
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    • v.47 no.5
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    • pp.630-636
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    • 2014
  • To investigate the characteristics of hybrid eggs and larva produced by olive flounder Paralichthys olivaceus females and starry flounder Platichthys stellatus males, we examined the developmental speed of hybrid eggs at different water temperatures. The developmental speed of hybrid eggs tended to increase with increasing water temperature. Specifically, the hatching times were 91 hrs, 62 hrs and 43 hrs at $10^{\circ}C$, $15^{\circ}C$ and $20^{\circ}C$, respectively. The mean biological minimum temperature of the hybrid was $1.3^{\circ}C$, which is in between that of the olive flounder and the starry flounder. In high water temperatureseasons, slower growth was observed in hybrids of the starry flounder which is a coldwater fish.

Development of Eggs and Early Life History of Korean Bitterling, Rhodeus pseudosericeus (Acheilognathinae) (한강납줄개, Rhodeus pseudosericeus (Acheilognathinae)의 난 발생과 초기생활사)

  • Kim, Chi-Hong;Kang, Eon-Jong;Kim, Jong-Hwa
    • Korean Journal of Ichthyology
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    • v.18 no.3
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    • pp.266-272
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    • 2006
  • The egg development and early life history of Korean endemic bitterling Rhodeus pseudosericeus were observed under the controlled water temperature, $17.0{\pm}0.5^{\circ}C$. Fertilized eggs are opaque yellow in color, measuring 2.9~3.1 mm in length and 1.6~1.9 mm in breadth. The eggs of this species began to hatch about seventy hours after insemination and the range of total length of larvae were 3.2~3.4 mm. The larvae reached at the heterotrophic stage about twenty-five days after hatching. R. pseudosericeus had a pair of wing-shaped yolk projection during the prelarval stage that is a common character of the genus Rhodeus.

Temperature-Dependent Development of the Swallowtail Butterfly, Sericinus montela Gray

  • Hong, Seong-Jin;Kim, Sun Young;Ravzanaadii, Nergui;Han, Kyoungha;Kim, Seong-Hyun;Kim, Nam Jung
    • International Journal of Industrial Entomology and Biomaterials
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    • v.29 no.2
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    • pp.153-161
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    • 2014
  • The aim of this study is to investigate the effects of ambient thermal environments on the development of swallowtail butterflies (Sericinus montela Gray). Developmental durations and survival rates of S. montela were examined at two crucial developmental stages, embryonic and larval development, at varying temperatures ranging from $15^{\circ}C$ to $35^{\circ}C$. As expected, our results indicated that increasing temperatures decreased the developmental duration and survival rate of the eggs. However, the larvae and pupae showed maximum survival rates at $20.0^{\circ}C$ and $25.0^{\circ}C$, and the represented durations were similar to those of the eggs. Larval development was stage-specific, revealing that the fourth and fifth instars at the later stages were more susceptible to temperature variation. When considering both parameters, the optimal development of S. montela occurred within the temperature range of $20.0-25.0^{\circ}C$. The lower threshold for the complete development of S. montela from eggs to eclosion of adults was calculated at $10.6^{\circ}C$ by linear regression analysis. The estimated value is similar to that of other endemic insects distributed in temperate climate zones, which indicates that S. montela belongs to a small group of swallowtails adjusted to low ambient temperatures. From the results, we predict that the full development of S. montela could be achieved within the temperature range of $17.5-30.0^{\circ}C$. Embryonic development ceased at both test temperature extremes, and no further larval development proceeded after the third instar at $35.0^{\circ}C$. These results suggest that embryogenesis can be significantly influenced by slight variations in the ambient thermal environment that fall below the optimal range.