• Culinary science and hospitality research
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• v.14 no.4
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• pp.385-397
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• 2008

The effects of defatted soy flour on the physicochemical characteristics of dough and bread-making properties were studied with sodium stearyl lactylate(SSL) as an emulsifier. Defatted soy flour was added to the wheat flour at the level of 0$\sim$12%. The emulsifier was added to the wheat flour-defatted soy flour blends at the level of 0.5 and 2%. Set-back and consistency in amylogram were significantly decreased as the level of soy flour was increased. On comparison with control, the bread made from defatted soy flour especially had less specific loaf volume. The specific loaf volume of wheat flour-defatted soy flour bread prepared with 0.5$\sim$2% SSL was better than that without SSL. Decrease of L value (lightness) of crust color and decrease of L value of crumb color were shown with the increase of defatted soy flour. From the result of sensory evaluation, wheat flour-defatted soy flour bread containing up to 6% defatted soy flour with 1.0% SSL were rated as high quality. Most of texture parameters of bread increased with the increase of defatted soy flour and decreased with increase of SSL. Considering the volume and sensory characteristics of bread, bread prepared with 6% defatted soy flour and 1% SSL was regarded as highly acceptable.

• Journal of the Korean Society of Food Science and Nutrition
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• v.32 no.3
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• pp.388-392
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• 2003

This study was conducted to examine the effect of soy flour on tapioca non- steamed fermentation. A whole soy flour was higher than roasting soy flour in alcohol content. Alcohol content was increased up to 2% of soy flour, and decreased after adding 3% soy flour. The pH and total acidity were showed no significant differences by adding soy flour, roasted soy flour, water and enzyme. The optimum conditions for alcohol production were 2% (w/w) of soy flour,0.5% (w/w) of enzyme and 250% (v/w) of water at 96 hr. Addition of soy flour increased yield of alcohol.

• Journal of Nutrition and Health
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• v.33 no.4
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• pp.395-402
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• 2000

This study was carried out to explore the hypocholesterolemic effect of dehyulled defatty soy flour and its possible mechanisms including endocrine status, cholesterol biosynthesis, and fecal excretion in rats. Animals fed casein were used as control and each phospholipid compared with casein feeding. Cholesterol concentrations in all lipoprotein fraction were significantly lower in defatted soy flour group compared with casein-fed control. Defatted soy flour feeding also significantly lowered hepatic total lipid, cholesteol and TG, and increaed fecal bile acid excretion by 270% compared with casein feeding. Defattd soy flour feeding had no significant effect on plasma thyroid hormone levels and hepatic 3-hydroxy-3-methyl glutary coenzyme A(HMG-CoA) reductase activity. However, plasma T4 concentration was slightly elevated and HMG-CoA reductase activity was suppressed in defatted soy flour group. These metabolic alterations partially explain the reduced plasma and hepatic cholesterol levels of rats fed defatted soy flour.

• Food Science and Preservation
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• v.30 no.5
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• pp.875-884
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• 2023

In this study, the quality characteristics of texturized vegetable proteins (TVP) produced from defatted soy flour (DSF) were analytically compared with those of texturized vegetable proteins produced with isolated soy protein (ISP) and non-defatted soy flour (SF). The base raw material formulation consisted of 50% soy proteins, 30% gluten, and 20% corn starch. A cooling die-equipped extruder was used with a barrel temperature set at 190℃ and screw rotation speed of 250 rpm. With respect to the hardness of isolate soy proteins, that of soy flour and defatted soy flour was 22.4% and 68.8%, respectively, and gumminess was 17.6% and 44.3%, respectively. Defatting increased chewiness, shear strength, and springiness. Moisture content was higher in soy flour than in defatted soy flour, while there were no significant differences in terms of water absorption and turbidity. The pH was higher with soy flour than with defatted soy flour. Concerning color, the L and b values were higher with soy flour, while the a value was higher with defatted soy flour. These results suggest that defatting soybeans can improve the quality of plant-based proteins. Further research is needed to address the quality differences from those of isolated soy proteins.

• Journal of Nutrition and Health
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• v.31 no.2
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• pp.135-142
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• 1998

This study was undertaken to determine whether dehulled defatted flour has an effect on postprandial plasma lipoprotein composition, hepatic lipid composition, enzyme and hormone levels in rats. Control(casein) and experimental (dehulled defatted soy flour)diets were fed to rats for 7 weeks. all animals (S. D. rats, male) were sacrificed 2 hrs after the feeding of 5g of each diet. Defatted soy flour feeding significantly lowered postprandial plasma total cholesterol, chylomicron/VLDL-cholesterol, hepatic cholesterol and triglyceride(TG) as compared with casein feeding, whereas no significant effect on plasma TG was observed. Intestinal kipase activity was elevated , whereas trypsin activity was suppressed in the dehulled defatted soy flour group. Plasma glucagon, thyroid hormone and hepatic HMG-coA reductase levels were not affected by diet treatment. These results hypothesize that dehulled defatted soy flour affects cholesterol digestion and absorption in guts, thus delaying the appearance of chylomicron cholesterol in plasma or affecting the disappearance of chylomicron remnant to high-density-lipoprotein(HDL).

• The Korean Journal of Food And Nutrition
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• v.14 no.4
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• pp.287-292
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• 2001

The purpose of this study was to investigate the effect of roasted soy f1our on the characteristics of Mandu-pi. Various Mandu-pi samples were prepared with wheat flour along with the addition of different amount of roasted soy flour. and then instrumental characteristics and sensory evacuation were investigated. As a result of amylography study, there were no difference In the initial pasting and maximum viscosity temperatures between samples. And maximum viscosity decreased with the increase of flour addition. In farinography study, the addition of roasted sop f1our did not affect the gelatinization temperature, while stability and developing time of dough increased by addition of soy flour level. Besides cooked weight, cooked volume and water absorption of Mandu-pi were also higher significantly than control. The more soy flour was added, the less lightness and more redness and yellowness were obtained. The result of sensory evaluation revealer that there were no differences between samples in beano aroma, smoothness, and chewness. However Mandu-pi added roasted soy flour showed higher scores in surface appreance, nutty aroma, nutty taste. sweet taste, and overall preferance than control.

• Food Science and Preservation
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• v.9 no.4
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• pp.418-424
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• 2002

This study was undertaken to develop the optimum baking formular and process in making the improved soy-wheat composite breads furtified with soy flour, which has been known for a source of biologically active phytochemicals and for more vegetable proteins as well. The effects of the addition of soy flour on a rheological properties of dough, on the sensory characteristics of breads, and on the possibilities of commercialization of these functional breads were investigated. As the added amount of soy flour increased, water absorption, development time and the weakness value of dough were increased, but dough stability were decreased in the farinograph. In the extensograph, the more soy flour was added, the less the extensibility and the resistance to extention were shown. As the amount of soy flour increased, gelatinazation point was increased in the amylograph, but the maxium viscosity was decreased. As the added amount of soy flour was increased, b value(yellowness) was obviously increased, L value(lightness) was slightly decreased. However, a value(redness) was not nearly changed in the color of cut loaves. In sensory evaluation, the more soy flour was added, the less the external, the internal characteristics and the eating qualities were shown. Accorting to the addition of soy flour, the toughness and the brittleness tended to be increased proportionally. The dough of 10% soy-wheat composite flour(SF10) was the most favorable on the baking performance.

• Korean journal of food and cookery science
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• v.21 no.3 s.87
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• pp.301-310
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• 2005

The effects of defatted soy flour on the physicochemical characteristics of dough and bread making properties were studied. Defatted soy flour is added to wheat flour for bread-making in order to maximize the use of isoflavones in the soybean. Different particle sizes of both defatted soy flour and wheat flour were prepared by grinding and sievingwith meshes. In the mixograph test, the addition of defatted soy flour to wheat flour increased the requirement for water and decreased the dough development time. Water absorption rates were also investigated to determine the optimum quantity of water for good dough. As the level of defatted soy flour mixed with wheat flour increased, the sedimentation and P.K. values decreased. In comparison with control, the bread made with defatted soy flour especially had a lower specific loaf volume. Specific loaf volume of wheat flour-defatted soy flour bread prepared (Ed- this is an incomplete sentence, it's only a subject clause, and I don't how what you intend to state). In terms of the staling rate and hardness of the wheat flour-defatted soy flour bread, the increased defatted soy flour had a faster staling rate during storage at 5? than at 25? for 5days. From the result of sensory evaluation, wheat flour-defatted soy flour breads containing up to $4\%$ defatted soy flour were rated as being of high quality.

• Culinary science and hospitality research
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• v.16 no.2
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• pp.342-350
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• 2010

The purpose of this study is to examine the effects of adding various concentrations of defatted soy flour on the quality characteristics of sulgidduk. Sulgidduk samples different in the moisture contents, color values, texture characteristics and sensory characteristics were then measured and compared with each other. As the content of the defatted soy flour increased, their moisture contents were significantly decreased. Lightness values were decreased with increasing the defatted soy flour, whereas their yellowness and redness values were increased. In the texture analysis, hardness and adhesiveness were highest with 10% of defatted soy flour added, and springiness, cohesiveness and chewiness were highest with 7.5% of defatted soy flour added. Finally the results of the sensory evaluation displayed sulgidduk contained 5% of defatted soy flour was the highest in color, flavor, aftertaste and overall preference.

• Food Science and Biotechnology
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• v.17 no.1
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• pp.52-57
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• 2008

The effects of transglutaminase (TG) on the pasting and rheological properties of different wheat cultivars ('Sharpshooter', 'Russ', and 'AcAriss') blended with barley (40%) or soy (20%) flour were investigated. In the rapid visco-analyzer (RVA) pasting profile, the addition of barley or soy flour to wheat flour samples induced a decrease in peak, trough, final viscosity, breakdown and setback values. However, TG treatment of these blends significantly increased peak viscosity and breakdown (p<0.05). In particular, TG treatment greatly increased the breakdown of wheat flour blended with soy flour, indicating that the cross-linking of proteins through TG may somehow be related to an increase in starch granule rupturing in pastes. Storage (G') and loss (G") moduli of the sample pastes increased with an increase in frequency ($\omega$), while complex viscosity (${\eta}*$) decreased. In all wheat cultivars, G', G", and $\eta$ were decreased by the addition of barley or soy flour, or TG treatment. Results suggest that protein cross-linking by TG can produce unique and improved properties in wheat flours blended with barley or soy flour.