• Proceedings of the Korean Society of Crop Science Conference
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• 2000.04a
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• pp.332-333
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• 2000

• Proceedings of the Korean Society of Crop Science Conference
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• 1992.05a
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• pp.10-11
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• 1992

• Proceedings of the Korean Society of Crop Science Conference
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• 1992.05a
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• pp.12-13
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• 1992

• KOREAN JOURNAL OF CROP SCIENCE
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• v.28 no.3
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• pp.340-344
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• 1983

Taxonomic distances and Q correlations of all possible comparisons among thirty-two collected soybean varieties were calculated from the standardized mean of twenty-one characters. Ten varietal groups were classified by the single linkage clustering based on Q correlations. The means of Q correlations of intra-group were higher than those of inter-group. Each groups were characteristic in each mean of characters within varietal groups.

• The Korean Journal of Food And Nutrition
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• v.12 no.2
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• pp.184-190
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• 1999

Soybean protein consists of two major components $\beta$-conglycinin and glycinin which together consti-tute 70% of the total seed storage protein at maturity. $\beta$-Conglycinin is trimeric glycoprotein and for-med by the assembly of various combinations of three subunits $\alpha$,$\alpha$' and $\beta$ which have molecular weig-hts of 69,000, 72,000 and 42,000, respectively. Recently $\beta$-conglycinin was identified as powerful LDL lip-oprotein receptor activation hypercholesterolemia and major allergenic proteins. To investigate these reasons we constructed an expression system of cDNA encoding $\alpha$-subunit of $\beta$-conglycinin in Escherichia coli and purified the expressed protein. The pro-$\beta$-conglycinin synthesized in Escherichia coli BL 21 (DE3)comprised approximately 15% of the total bacterial proteins and the expressed protein are formed sol-uble and trimer such as native protein in Escherichia coli cells. The highly expressed protein was purified to homogeneity by salt precipitation with 20~40 % ammonium sulfate ion-exchange chromatography with Q-sepharose and hydrophobic column chromatography with Butyltoyopearl.

• Asian-Australasian Journal of Animal Sciences
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• v.29 no.11
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• pp.1523-1529
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• 2016

Soybean meal (SBM), a commonly used protein source for animal feed, contains anti-nutritional factors such as trypsin inhibitor, phytate, oligosaccharides among others, which limit its utilization. Microbial fermentation using bacteria or fungi has the capability to improve nutritional value of SBM by altering the native composition. Both submerged and solid state fermentation processes can be used for this purpose. Bacterial and fungal fermentations result in degradation of various anti-nutritional factors, an increase in amount of small-sized peptides and improved content of both essential and non-essential amino acids. However, the resulting fermented products vary in levels of nutritional components as the two species used for fermentation differ in their metabolic activities. Compared to SBM, feeding non-ruminants with fermented SBM has several beneficial effects including increased average daily gain, improved growth performance, better protein digestibility, decreased immunological reactivity and undesirable morphological changes like absence of granulated pinocytotic vacuoles.

• Journal of the Korean Society of Food Culture
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• v.9 no.1
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• pp.61-69
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• 1994

Northern Kyungbuk around Andong is a mountainous and more or less dry region geomorphogically. Since this area located in the valley was less invaded by foreign countries, the folk traditions have been maintained for a long time. Also as the center of Confucian culture, this region respects ceremonies and so, the simple and noble ceremonial-foods such as Ddok, Hankwas, and Buchiki have been firmly preserved in many distinguished families. And besides Andong-Soju, many traditional liquors produced in different methods can be found in this region. As Gogi-Sikhae(a fermented beverage utilizing rice and fish) is still preserved in eastern coastal area, Sosikhae(Sikhae without fish) is maintained in this region and furthermore the unique Andong Sikhae developed by modifying Sosikhae is being consumed currently. Since it is difficult to get fish here geographically, the soybean foods were developed for protein intake, for example, various fermented soybean pastes, Andong-Songuksu(a hand-made noodle using raw soybean flour), and Siragiguk(a vegetable soup).

• Applied Biological Chemistry
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• v.41 no.7
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• pp.522-526
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• 1998

Ferritin from germinated soybean seeds was purified by ammonium sulfate precipitation (0.55 saturation), ion-exchange chromatography on DEAE-cellulose, gel filtration chromatography on Sephacryl S-300, and HPLC with Bio-Scale Q2 column. SDS-PAGE analysis showed that the purified ferritin is composed of subunit with an apparent M, 21,000. The molecular mass of the native soybean ferritin estimated by gel filtration on Sephacryl S-300 and non-denaturing polyacrylamide gel electrophoresis appeared to be $510{\sim}560\;kDa$. Soybean ferritin contained 833 mol Fe/mol protein, which is 31-fold more iron than pumpkin ferritin and stained positive for iron on non-denaturing gel. Soybean ferritin cross-reacted with anti-soybean rabbit ferritin antiserum.

• Korean Journal of Soil Science and Fertilizer
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• v.21 no.2
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• pp.141-148
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• 1988

Though the cultivation history of soybean in Korea is relatively long, taxonomical study on symbiont nodule bacteria, Rhizobium japonicum is not carried out yet systematically. This work was for the taxonomical study on Korean native R. japonicum by recognizing isolates seroimmunologically as well as for the elucidation of its affinity with host soybean variety. Twenty seven isolates from 13 soybean cultivars cultivated at Seoul National University's experiment field and 6 strains of R. japonicum preserved in our laboratory have been tested. Tube agglutination test, agglutinin adsorption test, and gel immune diffusion test were used. The results obtained are as follows: 1. Twenty five isolates and strains of R. japonicum among 33 were classified into 4 serogroups and identified as indivisual serotype. 2. Two isolates isolated from Hill and Milyang cultivars, 2 isolates from Bangsa and Jangbaek, and 4 isolates from Paldal, Sae-al, and Jangbaek were identified as the same serotype respectively. 3. Seroimmunological tests may be adapted for the elucidation of the affinities between the strains and soybean cultivars as well as strain recognition and systematic classification of Korean native R. japonicum.

• Korean journal of applied entomology
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• v.24 no.2 s.63
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• pp.103-106
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• 1985

The present study was carried out to determine appropriate growth stage for evaluating resistance to septoria brown spot in field and to search resistance sources from soybean germ plasm. Disease severity expressed by log $\frac{x}{1-x}$ was different with soybean genotypes and vertical progress of the disease was related to the diseased leaf area. Correlation between diseased leaf area and the area under septoria brown spot disease progress curve (AUBC) was highest at full blooming stage, indicating a reasonable stage for measuring the disease severity to evaluate resistance in field. There was no lines highly resistant to the disease among 1,428 native soybean lines tested.