• Title/Summary/Keyword: Baking method

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Bake hardenability of batch annealed steel sheets with prestrain (일괄 풀림처리된 강판의 예비 변형정도에 따른 소열경화 특성)

  • Huh, Hoon;Whang, P. S.
    • Journal of the korean Society of Automotive Engineers
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    • v.12 no.1
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    • pp.40-48
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    • 1990
  • Bake hardenability of batch annealed steel sheets is investigated in connection with the amount of tensile deformation and the bake hardening condition. This study associates with the method for producing bake hardening materials by means of batch annealing process and for measuring bake hardenability which is not yet fully established. The experimental result demonstrates the relationship between strain distribution and bake hardening behavior in various bake hardening conditions, which provides an essential information for automobile design and related sheet metal forming in a press shop. The result also shows the bake hardenability of the tested material increases as the baking temperature is increased from 150.deg. C. The result assures the bake hardening materials can guarantee reasonably high strength as well as good uniformity in yield strength for the automobile body by sheet metal forming process.

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Fabrication of BLT Nanotubes for 3D Nanotube Capacitor (3D Nanotube Capacitor 구현을 위한 BLT Nanotube 제작)

  • Seo, Bo-Ik;Shaislamov Ulugbek;Kim, Sang-Woo;Hong, Seok-Kyung;Yang, Bee-Lyong
    • Journal of the Korean Ceramic Society
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    • v.43 no.4 s.287
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    • pp.220-223
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    • 2006
  • BLT nanotubes were synthesized by using simple and convenient method template-wetting process. Porous alumina membranes were prepared by 2 step anodic oxidation as the template. To improve wetting properties and make low surface energy, BLT solution was mixed with polymer. Polymer was removed completely during annealing. After completely etching the template in 30 wt% KOH solution, we demonstrate that BLT nanotubes with a diameter of 200 nm can be fabricated. Grain growth process of BLT nanotubes during baking, and furnace annealing was examined by FE-SEM and XRD.

Effect of Some Additives for Yukwa (Popped Rice Snack) Quality Improvement and Process Modification Trials (유과 품질향상을 위한 첨가물의 효과와 공정 단순화 시도)

  • Shin, Dong-Hwa;Kim, Myung-Kon;Chung, Tae-Kyu;Lee, Hyun-Yu
    • Korean Journal of Food Science and Technology
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    • v.22 no.3
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    • pp.272-277
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    • 1990
  • Some additives were applied to improve Yukwa(Popped rice snack) quality and process modifications were tested for cutting down soaking time and application of rice flour. Addition of soaked soybean (3%, w/w) to dough showed higher expansion rate and better physical properties with more acceptable quality by sensory evaluation of Yukwa. Baking powder, modified starch and alcoholic liquor, Mackeali(rice wine, turbid). Soju(distilled liquor) and Yakju(rice wine, clear), were no positive effect on quality of Yukwa but alcoholic liquor gave more fine texture than others. High temprature soaking $(60^{\circ}C)$ of rice for 3 hours which is near gelatinization temperature of rice starch. gave same quality of Yukwa comparing with long time soaking (12 hours) at room temperature. Extention of high temperature soaking (12 hours) did not improve the quality of Yukwa. The 100 mesh of rice flour by dry milling method was better in expansion rate and hardness than 40 and 80mesh but it was worse than ordinary wet milling. It was notified that milling method and milling mechines for Yukwa preparation should be studied in more detail.

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Studies on Bread-Baking Properties of Naked Barley Flour and Naked Barley-Wheat Flour Blends -II. Rheological Properties of Barley-Wheat Blend Doughs and the Variations of Loaf Volumes with Addition of Food Additives- (쌀보리 및 쌀보리 밀 복합분(複合粉)의 제빵 적성(適性)에 관한 연구(硏究) -제 2 보 : 쌀보리 밀 복합분(複合粉)의 물리적 성질과 첨가제에 의한 빵의 부피 변화(變化)-)

  • Rhee, Chul;Bae, Song-Whan;Yang, Han-Chul
    • Korean Journal of Food Science and Technology
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    • v.15 no.2
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    • pp.112-117
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    • 1983
  • The bread-baking properties of mixed naked barley/wheat flour blends with various food additives were investigated in the study, and changes of loaf volume of mixed naked barley/wheat flour blends prepared by lactic acid method were observed. Addition of egg yolk, soybean flour, gluten, C.M.C. and ascorbic acid were levels of 7%, 10%, 4% ,1% and 100 ppm, respectively. The addition of these food additives to 50% barley/50% wheat flour blends yieled an increase in loaf volume. Specific loaf volumes of 50% barley/50% wheat flour blend with egg yolk, soybean flour, gluten, C.M.C. and ascorbic acid were 2.85, 2.04, 2.69, 2.77, 2.56 and 2.56 ml/g bread, respectively. As the replacement percentages of wheat flour increased, the effect of food additives on loaf volume increased. In particular, the specific loaf volume of 30% barley flour/70% wheat flour blend was similar to that of 100% wheat flour bread.

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Quality characteristics of rice bread with different cultivars and milling methods (분쇄방법 및 품종에 따른 쌀 식빵의 품질특성)

  • Oh, Hyun Ah;Kim, Min Young;Lee, Yoon Jeong;Song, Myeong Seob;Lee, Choon Ki;Lee, Youn Ri;Lee, Junsoo;Jeong, Heon Sang
    • Korean Journal of Food Science and Technology
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    • v.50 no.5
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    • pp.492-498
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    • 2018
  • The current study investigated the effect of rice cultivars (Samkwang and Seolgaeng) and milling methods on various characteristics of rice bread. In dry milling, all component characteristics, except the water solubility index, were higher. In terms of the morphology of starch, Samkwang exhibited an angular shape, while Seolgaeng exhibited a round shape. Wet milled flour yielded fine polygonal starch compared to dry milled flour. In regard to the quality characteristics of bread, both wet milled Samkwang and dry milled Seolgaeng showed closely similar specific volumes of 2.90 mL/g and 2.86 mL/g, respectively. Hardness was in the range of 555.50 - 597.29 g for Seolgaeng and 776.78 - 823.06 g for Samkwang. Thus, although the flour characteristics were different, dry milled Seolgaeng, the rice flour of which is economical to produce and has baking characteristics similar to that of wheat flour, appears to be preferable.

Glycoalkaloid content in potato tubers by various cooking methods and potato products (감자의 가공제품 종류와 조리방법에 따른 Glycoalkaloid의 함량)

  • 김정애;소궤신행;한재숙
    • Korean journal of food and cookery science
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    • v.20 no.1
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    • pp.76-80
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    • 2004
  • The potato tubers of Solanum tuberosum L. contain potato glycoalkaloids (PGA), a class of naturally occurring toxicants. The primary constituents of this class of compounds in potatoes are $\alpha$-chaconine and $\alpha$-solanine. The purpose of this study was to examine the effects of various cooking methods on the PGA contents in the common Korean potato Irish Cobbler variety and those in commercially produced potato products consumed in Korea. After cooking, most potatoes showed big decreases in their PGA contents compared to the uncooked samples, with the exception of baked potatoes, which maintained 90.86% of their PGA contents. The PGA levels in boiled and blanched potatoes were reduced by 91.68 and 84.17%, respectively. However, the levels in samples boiled in 1% salted water were only reduced by 52.10%. Potatoes fried and sauteed in oil had their PGA contents reduced to 49.42 and 49.51% of their original levels. The reductions in the relative PGA contents by cooking method were in the order boiling〉blanching〉boiling with 1% NaCl〉steaming〉sauteing〉frying〉microwaving〉baking. The highest remaining PGA content of the potato products in Korea was in potato chips, at 69.57mg/100g, but made with imported potatoes.

Interactive Effect of Food Compositions on the Migration Behavior of Printing Ink Solvent

  • An, Duek-Jun
    • Preventive Nutrition and Food Science
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    • v.14 no.4
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    • pp.310-315
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    • 2009
  • The partitioning behavior of the five printing ink solvents in nine lab-made cookies with various sugar and water content at 25${^{\circ}C}$ was studied to find out the presence and effects of interaction between the two ingredients on partitioning behavior in cookies. Solvents were ethyl acetate, hexane, isopropanol, methyl ethyl ketone and hexane. It was observed that the partition coefficient (the solvent concentration in food compared to that in air, Kp) decreased as sugar increased in all case and increased as water content increased for all compounds except toluene. Statistical analysis by the F-test method was used to determine the significance of sugar-water interactions, as well as other single factors on partitioning behavior of each solvent. Sugar content alone had no significant effects, but the crystallinity of sugar, as changed by water content, affected the partitioning behavior of the five solvents significantly. Parameter estimation for each significant factor by SAS program yielded a regression equation, which was used to predict the partitioning behavior in the finished cookie. Kp values from the regression equation could be determined more precisely by applying a correction term for the interaction between sugar and water to the Kp values of each ingredient after baking.

The Medicinal Effects of Seafoods in ${\ulcorner}$Lim-Won-Sib-Rheuk-Ji${\lrcorner}$ ("임원십육지(林園十六誌)"에 수록된 어패류의 향약성(鄕藥性)에 관한 연구)

  • 최영진;백숙은
    • Journal of the East Asian Society of Dietary Life
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    • v.14 no.3
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    • pp.187-195
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    • 2004
  • This study was conducted to figure out the nutritional nature of seafoods categorized according to the medicinal effects and the usages introduced in Lim-Won-Sib-Rheuk.-Ji, one of the well-known encyclopedias published during the Chosun Dynasty. They were compared with those introduced in other cooking books in order to find out how they were used in the diet of real-life. The seafoods of the book were first categorized into the fish 20, the mollusk 5, the crustacea 4, and the shellfish 7, and reptile according to the biological taxonomy, and then each one was reviewed in terms of the taste and the food-nature. Generally, the fishes had the sweet taste; the crustacea and the shellfish the salty or sour in addition to the sweet taste; none of them were bitter or hot. Most of them had the mild nature; seven of them were regarded as warm; four as cool; one as cold from the standpoint of the traditional medicine. The food-nature of seafoods was closely related with the medicinal effects on the human body. These seafoods were characteristically used in daily dietary life as well as the medical applications; used as the side-dishes rather than the main-dishes. The cooking methods of boiling, steaming, and baking were preferred to drying and stewing. The preservation methods favored were the fermentation, drying and salting. These cooking and preservation methods were believed to reflect the nature of the seafoods to manifest the medicinal effects.

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비전도성 에폭시를 사용한 RF-MEMS 소자의 웨이퍼 레벨 밀봉 실장 특성

  • 박윤권;이덕중;박흥우;송인상;박정호;김철주;주병권
    • Proceedings of the International Microelectronics And Packaging Society Conference
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    • 2001.11a
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    • pp.129-133
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    • 2001
  • In this paper, hermetic sealing was studied fur wafer level packaging of the MEMS devices. With the flip-chip bonding method, this B-stage epoxy sealing will be profit to MEMS device sealing and further more RF-MEMS device sealing. B-stage epoxy can be cured 2-step and hermetic sealing can be obtained. After defining $500{\mu}{\textrm}{m}$-width seal-lines on the glass cap substrate by screen printing, it was pre-baked at $90^{\circ}C$ for about 30 minutes. It was then aligned and bonded with device substrate followed by post-baked at $175^{\circ}C$ for about 30 minutes. By using this 2-step baking characteristic, the width and the height of the seal-line were maintained during the sealing process. The height of the seal-line was controlled within $\pm0.6${\mu}{\textrm}{m}$ and the strength was measured to about 20MPa by pull test. The leak rate of the epoxy was about $10^7$ cc/sec from the leak test.

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The Accuracy of Various Value Drivers of Price Multiple Method in Determining Equity Price

  • YOOYANYONG, Pisal;SUWANRAGSA, Issara;TANGJITPROM, Nopphon
    • The Journal of Asian Finance, Economics and Business
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    • v.7 no.1
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    • pp.29-36
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    • 2020
  • Stock price multiple is one of the most well-known equity valuation technique used to forecast equity price. It measures by multiplying "the ratio of stock price to a value driver" by a value driver. The value driver can be earning per share (EPS), sales or other financial measurements. The objective of price multiple technique is to evaluate the value of assets and compare how similar assets are priced in the market. Although stock price multiple technique is common in financial filed, studies on the application of the technique in Thailand is still limited. The present study is conducted to serve three major objectives. The first objective is to apply the technique to measure value of firms in banking sector in the Stock Exchange of Thailand. The second objective is to develop composite price multiple index to forecast equity prices. The third objective is to compare valuation accuracy of different value drivers of price multiple (i.e. EPS, Earnings Growth, Earnings Before Interest Taxes Depreciation and Amortization, Sales, Book Value and Composite Index) in forecasting equity prices. Results indicated that EPS is the most accurate value drivers of price multiple used to forecast equity price of firms in baking sector.