• Korean Journal of Ichthyology
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• v.35 no.4
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• pp.244-252
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• 2023

This study compared the morphological and molecular characteristics of the two Pampus spp. in Korea, Japan and China to clarify the long-confused taxonomic status of the two Korean pomfrets named as "Byeong-eo" and "Deok-dae". Among them "Byeong-eo" was identified as Pampus punctatissimus in having the following morphological traits: patch of wavy ridges extending beyond the anterior tip of the pectoral fin, the groove on the lower ridge of gill cover absent, and the number of vertebrae 34. On the other hand, "Deok-dae" was identified as Pampus argenteus in having the following morphological traits: patch of wavy ridges not reaching to the anterior tip of the pectoral fin, the groove on the lower ridge of gill cover reaching to the lower jaw, and the number of vertebrae 38~42. In addition, "Byeong-eo" almost corresponded to P. punctatissimus from Japan in the mitochondrial DNA cytochrome c oxidase subunit I sequences (genetic distance=0.1%), while "Deokdae" showed genetic distance of 0.3% when compared to P. argenteus from China. Our comprehensive results suggest the validify of P. punctatissimus for "Byeong-eo", and P. argenteus for "Deok-dae".

• Journal of the Korean Society of Food Science and Nutrition
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• v.6 no.1
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• pp.21-25
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• 1977

The total capsaicinoids content of red pepper were determined according to the varieties and places of production. These samples were also analyzed on the analogues and homologues of capsaicinoids of the pepper. The following results showed that the capsalcinoids content was highly different between varieties of the pepper, and the ratio of capsaicin to total capsaicinoids was higher in product of China$(66{\sim}73%)$ than that of Japan$(49{\sim}57%)$ and Korea(38% ). However, product of Korea$(46{\sim}48%)$ showed higher ratio of dihydrocapsaicin than that of Japan$(27{\sim}37%)$ and China$(22{\sim}27%)$.

• Animal Systematics, Evolution and Diversity
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• v.11 no.2
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• pp.235-242
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• 1995

The nucleotide sequence variation of mitochondria1 DNA were investigated by eight restriction endonucleases from two oyster species, Crassostrea gigas collected from two localities of South Korea and one locality of Japan and C. nippona collected from one locality of South Korea. The total mtDNA size in the oyster, C. gigas, from the three localities was approximately 18 kb and that in C. nippona was 22 kb. The restriction fragment patterns of mtDNA in C. gigas from the three localities by BamHI, BgII, and XhoI digestions were identical to one another. The degree of mtDNA sequence divergence of C. gigas between the two localities in Korea was 2% and that between Korean and Japanese C. gigas was 5%. The amount of sequence divergence between the two species of oysters was 42%.

• Journal of the Korean Society of Food Science and Nutrition
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• v.16 no.4
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• pp.323-327
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• 1987

The sugar contents of Dolwoe, which were prepared in the laboratory and marketed Korean products of Dolwoe, Japanese product of Dolwoe and Korean-roasted products of Dolwoe were analyzed and compared. The contents of total sugar and reducing sugar of stem in prepared Dolwoe tea were 2 times higher than those of leaf. The sugar content of Korean product was similar to that of Japanese, but the contents of total sugar and reducing sugar in Korean-roasted sample decreased to 17.2% and 40.9%, respectively. It was confirmed that free sugar in Dolwoe tea was composed of rhamnose, fructose, glucose and sucrose. The ratio of free sugar content was quite different between Dolwoe-leaf tea and Dolwoe-stem tea. Comparing the free sugar content in prepared Dolwoe tea, glucose was the highest followed by fructose, sucrose and rhamnose. On the other hand, in marketed Dolwoe tea, glucose was the highest substance and followed by fructose, rhamnose and sucrose. It was found that rhamnose content in Japanese product was approximately 6 times more than that of Korean.

• Journal of the Korean Society of Food Science and Nutrition
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• v.44 no.12
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• pp.1799-1805
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• 2015

Rice vinegar (RV) is primarily made from fermented rice or rice wine in Korea, China, and Japan. Ten commercially available naturally-fermented rice vinegars produced in Korea (KRV1~4), China (CRV1~2), and Japan (JRV1~4) were comparatively investigated for their physicochemical properties and antioxidant activities. KRV showed a significantly higher total acidity range (5.07~6.27) than both CRV (4.67~4.84) and JRV (4.64~4.84). These acidity ranges corresponded with respective standards of each country: Korea (Food Code), China (GB), and Japan (JAS). Six different organic acids were detected in RVs; acetic acid and succinic acid were the most prominent. Thirty different amino acids were detected in RVs, and main identified amino acids were alanine (KRV), phenylalanine and aspartic acid (CRV), and leucine and alanine (JRV). ${\gamma}-Aminobutyric$ acid was detected at high concentration in KRV1. KRV1 showed maximum total phenolic content, and DPPH and ABTS radical scavenging activities of samples were also determined with significantly increasing tendency. KRV1 (produced from brown rice with aging period of >1 year) exhibited the highest free amino acid content and antioxidant activity as compared to CRV and JRV.

• Nuclear industry
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• v.7 no.5 s.51
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• pp.85-87
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• 1987

시기적으로 일본경제동향을 국내수요 확장방향으로의 계획을 모색하는 이 시점에서 일본의 전력수용산업계에서는 정부의 요청으로 대규모의 설비투자에 박차를 가하고 있는 중이다.

• 월간낙농육우
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• s.70
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• pp.36-41
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• 1987

• 월간낙농육우
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• s.69
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• pp.49-55
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• 1987

• Korean journal of applied entomology
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• v.35 no.2
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• pp.153-158
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• 1996

Methanol extracts from 79 domestic plant species in 41 families and the crude oil of one Japanese plant species were tested for their larvicidal activities against Thecodiplosis japonensis Uchida et Inouye, using filter paperimpregnated and insect-dipping methods. In a test with 10 mgtpaper, strong larvicidal activity (>90% mortality) was obtained from the extracts of roots from three domestic plants belonging to Ranunculaceae (Aconitum pseudo- leave var. eretum, A. carmichaeli and Clematis florida) and the crude oil of sawdust from a Japanese plant, Thujopsis dolabrata var. hondai (Cupressaceae). However, only the crude oil from the Thujopsis sawdust revealed strong larvicidal activity when tested with 5,000 ppm by insect-dipping method. It is concluded that the Thujopsis sawdust-derived materials could be useful as a new control agent against T. japonensis.

• KOREAN JOURNAL OF PACKAGING SCIENCE & TECHNOLOGY
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• v.19 no.2
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• pp.103-108
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• 2013

Packaging of solar salts produced in Korea and Japan were evaluated and compared each other in terms of packaging design such as package types, colors and graphics. The standing pouch type in plastic film was most popular for the Korean salts regardless of the package capacity. But the same type was common only for the lower package capacity of 300 g or less while the plastic film pouch was prevalent for the higher capacity for the Japanese salts. White and brown were dominant colors for the Korean solar salts reminding us of salt farms and the foreshore respectively and strengthening its color identity. White, blue and red were used for the dominant, assort and accent colors respectively for the Japanese salt packaging. Salt farmers and the foreshore are often represented as the main package graphics for the Korean solar salts while the wave symbolising the sea was found frequently for the Japanese ones. The word of 'Shinan' was involved the most in the brand names of the Korean salts and the sea was appeared very often in those of the Japanese ones.