• Journal of Environmental Health Sciences
• /
• v.30 no.4
• /
• pp.308-313
• /
• 2004

Native and acetylated soybean protein with acetylation percentage of $25\%$ were incubated with glucose to induce Maillard reaction. Acetylation of ${\varepsilon}$-amino group of lysine residues changed the conformation of soybean protein. The direct uv spectrum of native and acetylated soybean protein showed conformational changes with accessibility of tyrosine and tryptophan residues increased. Acetylation suppressed Maillard reaction between soybean protein and glucose. Acetylated soybean protein showed improved water sorption, fat binding, foam formation, and emulsion activity of the protein, but depressed brown pigment development and trypsin digestion. Thus aceylation prevented deterioration of certain functional characteristics that occurred during storage, besides causing functional characteristics to be improved on its own.

• KOREAN JOURNAL OF CROP SCIENCE
• /
• v.39 no.5
• /
• pp.420-425
• /
• 1994

Soybean seeds deteriorate even before harvest, especially under high temperature and high relative humidity conditions. This study was conducted to determine the effect of harvest date on seed quality in early maturing soybean cultivars. Soybean cultivars used in the experiment were Damyang-native, having small seed with yellow color, and Yuhsuzumi, having large seed with green color. The length of physiological maturity to grain harvest was 24 days in Yuhsuzumi and 8 days in Damyang-native. The moisture contents of seed were 25.3 % in Yuhsuzumi and 14.5 % in Damyang-native cultivar when pod reached its mature pod color. The seed color of Yuhsuzumi started to turn yellow, and its germination rate was greatly decreased when harvest was delayed after maturity, However, Damyang-native cultivars produced seed of high quality regardless of delayed harvest.

• Culinary science and hospitality research
• /
• v.13 no.3
• /
• pp.68-79
• /
• 2007

The purpose of this study was to contribute to merchandising of native local foods. This study was designed to standardize the recipes and to analyze the nutrients of native local foods in Gijang region such as 'Myeolchijjigae', 'Galchijjigae' and 'Maejipjjim'. The test recipe for each food was prepared according to the information obtained from the personal interview of Gijang natives and then supplied for the sensory evaluation. After that, CAN Pro 2.0 was used for the nutritional evaluation. The results are as follows : Myeolchijjigae was preferred when radishes and traditional soybean paste were added. Galchijjigae was more liked when young pumpkins, mixed soy sauce and soybean paste were added. Maejipjjim was preferred with Aeji(Codium adhaerens), Warty sea squirt(Styela clava), soybean paste and powdered perilla seed(Perilla frutescens var. japonica) added. The analysis of nutrient composition revealed that in general energy content was low whereas protein content was as high as recommended requirement in Myeolchijjigae and Maejipjjim. Calcium and phosphorus were high in Myeol-chijjigae, vitamin A in Galchijjigae, and vitamin A, B_6$, folic acid, phosphorus and iron in Maejipjjim.

• Journal of Pharmaceutical Investigation
• /
• v.30 no.3
• /
• pp.159-166
• /
• 2000

Kunitz-type soybean trypsin inhibitor (SBTI) and chondroitin sulfate (A, and C type) were conjugated using sodium periodate method. And the physicochemical, pharmacokinetic properties and immunogenecity of the conjugates (Chon-A-SBTI or Chon-C-SBTI) were characterized. We expected the conjugation using chondroitin sulfate to reduce the immunogenecity and to improve the pharmacological effect. As the results, the mean molecular weight of the conjugate highly increased. After I.V. injection of the radiolabeled conjugates or native SBTI into mice, it was found that native SBTI showed rapid elimination from plasma, whereas Chon-A-SBTI and Chon-C-SBTI were slowly eliminated. Organ distribution of the two agents at 30 min after I.V. injection was different : Chon-A-SBTI or Chon-C-SBTI accumulated to a large extent in the liver (13% in Chon-A-SBTI and 16% in Chon-C-SBTI), whereas native SBTI was taken up more rapidly by the kidney (107% dose/g of tissue) and excreated into the urine (26%). In addition we evaluated the therapeutic value of the conjugates by using the sublethal septic shock model caused by pseudomonal elastase and tested the immunogenecity by passive cutaneous anaphylaxis shock (PCA). The conjugates were more effective than native SBTI against pseudomonal elastase induced septic shock in guinea pig. In case of the conjugates, the pharmacological and therapeutic effect lasted over 3 hours long. In immunogenecity test, both of the conjugates showed the reduction of their immunogenecity, especially Chon-A-SBTI looked most effective.

• Asian-Australasian Journal of Animal Sciences
• /
• v.21 no.10
• /
• pp.1458-1465
• /
• 2008

Effects of soybean oil or whole cotton seed addition on conjugated linoleic acid (CLA) and performance of fattening Brahman$\times$Thai-Native cattle were studied. Eighteen fattening cattle averaging $241{\pm}24kg$ body weight and approximately 1 year old were stratified by live weight into three groups and randomly assigned by group to one of three dietary treatments. The treatments were control (concentrated 14% crude protein), control and supplemented with 170 g/d soybean oil, control plus 170 g/d of oil from whole cotton seed. All animals were weighed before and after the experimental period and 4 cattle per treatment were randomly slaughtered then carcass measurements were obtained. There were no statistically significantly differences in the final body weight, average daily gain and dry matter intake among treatments. However, the crude protein intake was significantly decreased (p<0.01) when whole cotton seed was fed compared with control and soybean oil treatments. The carcass composition and carcass characteristics were not significantly different in Longissimus and Semimembranosus muscle by feeding soybean oil and whole cotton seed compared with the control treatment. Supplementation of soybean oil increased (p<0.01) cis-9, trans-11 CLA by 116% in Longissimus muscle and by 240% in Semimembranosus muscle. However, whole cotton seed did not increase cis-9, trans-11 CLA in both muscles. The present study successfully increased cis-9, trans-11 CLA content of muscle lipids by soybean oil but not by whole cotton seed.

• Journal of the Korean Society of Food Culture
• /
• v.1 no.2
• /
• pp.163-166
• /
• 1986

Soybean and mungbean sprouts are vegetables indigenous to Korea which have been grown throughout the year from the most remote age. They had been called interchangeably as duchaeah or duah. Control method of environmental conditions for soybean or mungbean sprouts growing had been already appreciated from long time ago. A growing method once developed might have been handed over considerable period. Siroo (시루) and yongsoo (용수) had been the most common containers and the watering skill is of the utmost importance for soybean sprouts growing. As the demand of soybean sprouts in the market increased, a pit has been used for bean sprouts growing, and transformed into regular soybean sprouts factory. Now bean sprouts are international food and the demand of bean sprouts seems permanent in Korea. Accordingly the long-term policy concerned with the production of soybean sprouts should be prepared, placing emphasis on improved quality and safety.

• Applied Biological Chemistry
• /
• v.40 no.3
• /
• pp.225-231
• /
• 1997

Optimization theory was applied to a native and two imported soybeans. Failure stress and stress relaxation curve was measured with rheometer, and color was measured by colorimeter. The effects of each soybean upon the tofu texture were expressed through a non-linear canonical regression model and trace plot. Compared to the other imported soybeans, native soybean produced a higher strength in tofu texture, and showed the positive increase in viscoelastic properties such as instantaneous stress, equilibrium stress and relaxation time, whereas it had no effect on whiteness from reference blend, represented that native soy-bean showed the individual strength upon the selected rheological texture properties. Higher soaking ability in native soybean was selected as a new response for the optimization mixture process, and it contributed positively to the rheological properties of tofu. New soaking process control system during processing and desirability for the mathematical model should be applied for a better mixture design in varieties of soybeans.

• Journal of the Korean Society of Food Culture
• /
• v.26 no.6
• /
• pp.583-598
• /
• 2011

This study was intended to outline the characteristics of the food culture in the area of Kyungsangnamdo and its modernization by interpretation and analysis of the novel Toji, which was set in Hadong, Jinjoo in the area of Kyungsangnamdo in the early 20th century. The characteristics of the Kyungsangnamdo area's native dish during the Japanese ruling era in the latter half of the Choson dynasty are as follows. In the first part of the novel, which spans from 1897 to 1908, vegetable and grain food development can be seen in the area of Hadong, the interior plains of Kyungsangnamdo, where there is a typical farming village in the mountains. The second part of the novel, which spans from 1911 through 1917, includes some mentions of the properties of Kyungsangnamdo area's native dishes through the lens of emigrated Koreans living on Gando island. Gando island is in China, and is where Seohee, the heroine, escapes from her homeland and remains for a period of years. There is a unique type of seafood in the Gando area using fresh marine products, exactly the same as in the Kyungsangnamdo area. The third part of the novel spans 1919 through 1929, after Seohee returns to her own country and regains her house. There is a noticeable description of food culture in the area of Jinjoo in Kyungsangnamdo through the description of Seohee focusing on the education of her children. The well-described features of Jinjoo are boiled rice with soup of beef leg bones and Jinjoo bibimbob, with vegetables and a variety of foods using cod. Cod are caught in large quantities in Kyunjgsangnamdo, and cities in the area grow to medium size as the area became traffic-based. The fourth part of the novel spans from 1929 through 1938, and includes very detailed descriptions of characters and background locations. Salted fish combined with the wild ingredients of Mt. Jiri feature prominently in the Kyungsangnamdo's area descriptions. The fifth part spans from 1940 through 1945, and as the Japanese colonization era ends, the foods described in Kyungsangnamdo seem to develop the usage of soybean paste. With abundant fish and shellfish Kyungsangnamdo, the dishes that evolve to use soybean paste include mussel soybean paste soup, picked bean leaves in soybean paste, chaitgook - cold soup from soybean paste, and seolchigook used with seaweed and sea laver.

• Journal of Environmental Health Sciences
• /
• v.12 no.2
• /
• pp.67-74
• /
• 1986

The study was carried out to investigate for the property of Bacillus strains, on the native growthed microflora in Korean native soybean paste, and Bacillus strains of the high enzyme producing, were selected and identificated, from the microflora, that is, identificated Bacillus strains beared resemblance to B. subtills, on the colony, appearance was pellicle, surface's spreading, color creamy-thin browned, colony elevation flated, and edge lobated, the identfficated B. subtills strain named for the B. subtilis SCF. For the protease activity of B. subtilis SCF, according to the variation with pH, the pH stability was pH 7~8, and on the its protease activity, optimum temperature was 40$\circ$C, on the other hand, temperature of the highest stability of the protease was 50$\circ$C.

• KOREAN JOURNAL OF CROP SCIENCE
• /
• v.57 no.4
• /
• pp.365-372
• /
• 2012

Native of soybean aphid (Aphis glycines Matsumura) is an Asia and aphid is one of the dangerous pests in soybean [Glycine max (L.) Merr.]. High density aphid populations can reduce crop production by causing severe damage. The objective of this study was evaluation of resistance to the soybean aphid in soybean cultivars and germplasms. A total of fifty five soybean cultivars or germplasms, including two susceptible and two resistant check varieties, were infested to evaluate their resistance in the field cage and greenhouse test by aphid colonies which derived from wild collected one soybean aphid biotype in Korea. The average number of reproduced soybean aphid was evaluated with 62.7 aphids in the resistant check variety PI 567598B and also estimated with 1,807 aphids for susceptible check variety Williams 82. In soybean varieties and germplasms, the average reproduced soybean aphid populations ranged from the lowest 497 aphids for Junjeori to the highest 3,862 aphids for Mansu. About seventy six percent of soybean cultivars and germplasms were shown high density soybean aphid populations when compared with another susceptible check variety PI 567543C in the field cage test. From the greenhouse test to evaluate aphid index, 87.3% of soybean cultivars or germplasms presented aphid index with 9.0. No soybean cultivars and germplasms were observed with soybean resistant phenotype when regarded a aphid resistant level as less than 10% aphid reproductions compared with susceptible check Williams 82. Although no Korean soybean cultivars were identified with resistant trait to the soybean aphid, we found one great resistant genetic resource PI 567598B in this study. This result will be helpful to further study for providing useful genetic information for soybean researchers.