• Title/Summary/Keyword: National development

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Variation of Plant and Fruit Characters in Core Collections of Pepper (Capsicum chinense Jacq.)

  • Hur, On-Sook;Ko, Ho-Cheol;Lee, Sukyeung;Choi, Yu-mi;Ro, Na-Young
    • Proceedings of the Plant Resources Society of Korea Conference
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    • 2018.10a
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    • pp.68-68
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    • 2018

  • A total of 47 core collections of pepper (Capsicum chinense Jacq.) conserved in National Agrobiodiversity Center (NAC) were studied under field condition at Jeonju. All accessions were characterized for their 14 qualitative and 16 quantitative characters. Results revealed that both qualitative and quantitative characters exhibited wide variation among the studied germplasm. Distribution of fruit characters (fruit length, width, and fruit wall thickness) among the accessions was positively skewed. Of the 47 accessions evaluated, 38.3% accessions had conical shaped fruits and mature fruit color was predominantly red (51.1%), orange (21.3%) and yellow (14.9%). Principal component analyses revealed that (i) 56.64% of the qualitative (fruit shape, color and fruit surface) variation and (ii) 89.42% of the quantitative (plant width, height and fruit maturity days) variation were explained by the first two components. Clustering revealed two groups and dendrogram revealed morphological variation among accessions. The phenotypic diversity exists in this core collections provide valuable information to improve agronomic traits in pepper breeding program.

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Antioxidant Activity of Porcine Skin Gelatin Hydrolyzed by Pepsin and Pancreatin

  • Chang, Oun Ki;Ha, Go Eun;Jeong, Seok-Geun;Seol, Kuk-Hwan;Oh, Mi-Hwa;Kim, Dong Wook;Jang, Aera;Kim, Sae Hun;Park, Beom-Young;Ham, Jun-Sang
    • Food Science of Animal Resources
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    • v.33 no.4
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    • pp.493-500
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    • 2013

  • Gelatin is a collagen-containing thermohydrolytic substance commonly incorporated in cosmetic and pharmaceutical products. This study investigated the antioxidant activity of gelatin by using different reagents, such as 2,2-azinobis-(3-ethylbenzothiazoline- 6-sulfonic acid) (ABTS), 2,2-di (4-tert-octylphenyl)-1-picrylhydrazyl (DPPH), and oxygen radical absorbance capacity-fluorescein (ORAC-FL) in a porcine gelatin hydrolysate obtained using gastrointestinal enzymes. Electrophoretic analysis of the gelatin hydrolysis products showed extensive degradation by pepsin and pancreatin, resulting in an increase in the peptide concentration (12.1 mg/mL). Antioxidant activity, as measured by ABTS, exhibited the highest values after 48-h incubation with pancreatin treatment after pepsin digestion. Similar effects were observed at 48 h incubation, that is, 61.5% for the DPPH assay and 69.3% for the ABTS assay. However, the gallic acid equivalent (GE) at 48 h was $87.8{\mu}M$, whereas $14.5{\mu}M$ GE was obtained using the ABTS and DPPH assays, indicating about sixfold increase. In the ORACFL assay, antioxidant activity corresponding to $45.7{\mu}M$ of trolox equivalent was found in the gelatin hydrolysate after 24 h hydrolysis with pancreatin treatment after pepsin digestion, whereas this activity decreased at 48 h. These antioxidant assay results showed that digestion of gelatin by gastrointestinal enzymes prevents oxidative damage.

  • https://doi.org/10.5851/kosfa.2013.33.4.493 인용 PDF KSCI

Gonadal Development and Reproduction in the Trumpet Shell, Charonia sauliae

  • Kang, Kyoung-Ho;Kim, Jae-Min;Seon, Seung-Cheon;Zhuo, Liang Liang;Lim, Sang-Min;Kim, Hyeon-Jeong
    • The Korean Journal of Malacology
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    • v.25 no.1
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    • pp.29-33
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    • 2009

  • This study devised and tested a histological staging system for gonadal development in the trumpet shell, Charonia sauliae, which was collected along the south coast of Jeju Island, South Korea. This paper details for the first time the gonadal development characteristics of C. sauliae. Ovary and testis development in C. sauliae can be roughly divided into five stages: growing, mature, spent, degenerative, and resting. The trumpet shelll has multiple fecundation and fertilization during the spawning season for out-of-step gonadal development in high-temperature and low-salinity environments. Female trumpet shell tended to have larger shells and were more abundant than males (64.26% of all animals collected were female).

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