• Title/Summary/Keyword: corn starch

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The Effect of Silk Fibroin/Nano-hydroxyapatite/Corn Starch Composite Porous Scaffold on Bone Regeneration in the Rabbit Calvarial Defect Model (가토 두개골 결손 모델에서 실크단백과 나노하이드록시아파타이트, 옥수수 녹말 복합물을 이용한 골 이식재 개발)

  • Park, Yong-Tae;Kwon, Kwang-Jun;Park, Young-Wook;Kim, Seong-Gon;Kim, Chan-Woo;Jo, You-Young;Kweon, Hae-Yong;Kang, Seok-Woo
    • Maxillofacial Plastic and Reconstructive Surgery
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    • v.33 no.6
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    • pp.459-466
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    • 2011
  • Purpose: This study evaluated the capability of bone formation with silk fibroin/nano-hydroxyapatite/corn starch composite scaffold as a bone defect replacement matrix when grafted in a calvarial bone defect of rabbits $in$ $vivo$. Methods: Ten New Zealand white rabbits were used for this study and bilateral round-shaped defects were formed in the parietal bone (diameter: 8.0 mm). The silk fibroin 10% nano-hydroxyapatite/30% corn starch/60% composite scaffold was grafted into the right parietal bone (experimental group). The left side (control group) was grafted with a nano-hydroxyapatite (30%)/corn starch (70%) scaffold. The animals were sacrificed at 4 weeks and 8 weeks. A micro-computerized tomography (${\mu}CT$) of each specimen was taken. Subsequently, the specimens were decalcified and stained with Masson's trichrome for histological and histomorphometric analysis. Results: The average ${\mu}CT$ and histomorphometric measures of bone formation were higher in the control group than in the experimental group at 4 weeks and 8 weeks after surgery though not statistically significant ($P$ >0.05). Conclusion: The rabbit calvarial defect was not successfully repaired by silk fibroin/nano-hydroxyapatite/corn starch composite scaffold and may have been due to an inflammatory reaction caused by silk powder. In the future, the development of composite bone graft material based on various components should be performed with caution.

Studies on the Fermentative Utilization of Cellulosic Wastes (part III) Production of Yeast from the Hydrolyzate of Rice straw, Rice hull and Corn Starch Pulp. (폐섬유자원의 발효공학적 이용에 관한 연구 (제3보) 볏짚, 왕겨및 전분박 당화액을 이용한 효모배양)

  • 성낙계;심기환;이천수
    • Microbiology and Biotechnology Letters
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    • v.4 no.4
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    • pp.152-158
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    • 1976
  • Cultivation condition of yeast on the utilization of fermentable substrate from the cellulosic wastes such as rice hull, rice straw and corn starch cake was investigated. The results obtained were summarized as follows;1. Corn starch cake was respectively added to rice hull and rice straw in order to increase sugar concentration in the hydrolyzate, and then hydrolyzed. As the result, concentration of sugar in hydrolyzed solution of rice hull was 9.12%, in that of rice straw was 7.98%. 2. It was found that calcium carbonate as a neutralizer was the most effective to prepare the culture broth of yeast. 3. An optimal growth of Hansenula subpelliculosa GFY-2 was observed in the medium prepared by adding 0.3% of ammonium sulfate, 0.4% of potassium phosphate dibasic, 0.02% of magnesium sulfate, sodium chloride and calcium chloride to hydrolyaed sugar solution, respectively. 4. Hansenula subpellicuiosa GFY-2 cultured in the substrate solution which of rice hull and rice straw added to corn starch cake was assimilated more than 90% of sugar in the hydrolyzate within 48 hours. The yeast cells yielded in rice hull was 46.5%, and that of rice straw 45.4% to utilized sugars.

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An Innovative Process for High Fructose Corn Syrup Production Coupled with Direct Saccharification of Raw Corn Starch in a Bioattritor (생전분의 고농도 무증자당화법을 도입한 새로운 High Fructose Corn Syrup 제조공정)

  • 박동찬;이용현
    • Microbiology and Biotechnology Letters
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    • v.20 no.4
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    • pp.437-444
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    • 1992
  • An innovative process for high fructose corn syrup (HFCS) production coupled with direct saccharification of raw corn starch in the agitated bead enzyme reactor (bioattitor) was investigated. The required high concentration/purity of glucose solution suitable for isomerization was produced directly in a bioattritor. without condensation of hydrolyzate, 398 g glucose/$\ell$ and 98% glucose content from 400 g/$\ell$ (w/v) of raw corn starch after 24 hours. The unsaccharified residual starch could be separated easily upon centrifugation, and resaccharified. The obtained solution also possessed other desirable requirements as substrate for isomerization, such as. low concentrations of denatured protein and calcium ions, thereby, simplified the purification step. The obtained glucose solution was isomerized in an enzyme reactor paked with immobilized glucose isomerase to evaluate the suitability as a substrate. The proposed new HFCS process seems to have many advantages over the conventional process via liquefaction-saccharification steps. The follow-up investigations of the proposed process need to be conducted to evaluate the feasibility of industrial application.

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Quality Properties of Sausages Made with Replacement of Pork with Corn Starch, Chicken Breast and Surimi during Refrigerated Storage

  • Seo, Hyun-Woo;Kang, Geun-Ho;Cho, Soo-Hyun;Ba, Hoa Van;Seong, Pil-Nam
    • Food Science of Animal Resources
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    • v.35 no.5
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    • pp.638-645
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    • 2015
  • This effect of replacing pork with corn starch, chicken breast and surimi on the chemical composition, physical, texture and sensory properties of sausage were investigated during storage. Five treatments of sausage such as; T1 (10:0:0, %), T2 (10:5:0, %), T3 (10:10:5, %), T4 (10:15:10, %) and T5 (10:20:15, %) were prepared with replacement of pork with corn starch, chicken breast and surimi. The sausage made with pork meat served as control (C). The sausage in the control had higher moisture and fat contents, but lower protein content than the treatments (p<0.05). The sausages in the T2 and T5 had decreased pH values after 3 wk storage (p<0.05). The lightness value was lowest in the T3, while the yellowness values were lowest in the T5 during the storage. The TBARS (2-thiobarbituric acid reactive substance) values were lowest in the control in all storage times (p<0.05). However, the sausage in the control had higher VBN (volatile basic nitrogen) value than the treatments during the 1 wk storage (p<0.05). All treatments had significantly higher hardness, cohesiveness, springiness, gumminess and chewiness values (p<0.05) than the control. The results indicated that corn starch, chicken breast and surimi can used as a pork replacer, that it also improves the physicochemical and texture properties of pork sausages.

Gelatinization Behaviours and Gel Properties of Hydroxypropylated Corn Starches (하이드록시프로필화 옥수수 전분의 호화 및 겔 특성)

  • Yook, Cheol;Pek, Un-Hua;Park, Kwan-Hwa
    • Korean Journal of Food Science and Technology
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    • v.23 no.3
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    • pp.317-324
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    • 1991
  • Gelatinization behaviours and gel properties of hydroxypropylated corn starches (HPCS) were investigated with differential scanning calorimeter, amylograph and rheometer. Gelatinization temperature of HPCS decreased as degree of substitution increased. The retrogradation of corn starch was greatly reduced by hydroxypropylation, indicating that the association of starch molecules was sterically hindered by hydroxypropyl groups. In HPCS, gel was formed slowly and gel strength decreased resulting in soft and sticky texture. Texture profiles of HPCS gels were similar to those of tapioca and waxy corn starch. HPCS has shown a remarkable increase of paste transparency compared to native corn starch.

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Effects of Antibrowning Agents on the Quality and Browning of Dried Onions (갈변억제제가 건조양파의 갈변과 품질에 미치는 영향)

  • Kee, Hae-Jin;Park, Yang-Kyun
    • Korean Journal of Food Science and Technology
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    • v.32 no.5
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    • pp.979-984
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    • 2000
  • To improve the quality of dehydrated onion, antibrowning agents were screened. Effects of antibrowning agents on the degree of browning and the quality characteristics in dried onions were investigated. Sliced onions were dehydrated in an air drier at $70^{\circ}C$ within 3 percent moisture. Among various antibrowning agents, cyclodextrin and corn starch treatments were selected. Dipping in 4%(w/v) corn starch suspension proved more effective in preventing browning than other treatments. The change of color and the degree of browning showed a correlation. Dried onions treated with antibrowning agents prevented browning at around $24{\sim}32%$ compared to control. The contents of reducing sugar and vitamin C in treated onions had minimally changes.

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Studies on the Exo-maltotetraohydrolase of Pseudomonas stutzeri IAM 12097 -Part III. Reaction products and hydrolysis rate on various carbohydrates of Exo-maltotetraohydrolase- (Pseudomonas stutzeri IAM 12097 의 Exo-maltotetraohydrolase에 관한 연구(硏究) -제3보(第三報). 각종기질(各種基質)에 대(對)한 Exo-maltotetraohydrolase의 분해산물(分解産物) 및 분해율(分解率)-)

  • Lee, Mi-Ja;Chung, Man-Jae
    • Applied Biological Chemistry
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    • v.28 no.1
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    • pp.1-7
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    • 1985
  • Exo-maltotetraohydrolase produced by Pseudomonas stutzeri IAM 12097 was characterized with respect to substrate specificity, the reaction products and hydolysis rate on various carbohydrates. Maltopentaose, maltoheptaose, soluble starch, amylose, amylopectin, oyster glycogen and gelatinized starch of corn, potato, glutinous rice, green banana and arrow root were hydolyzed by this enzyme, but ${\alpha},{\beta},{\gamma}-cyclodextin$, sucrose, raffinose, lactose, pullulan, maltose, maltotriose and maltotetraose were not hydrolyzed. Among oligosaccharides, maltohexaose was favorably hydrolyzed by this enzyme and the main reaction product of oligosaccharides and polysaccharides was maltotetraose. Addition of pullulanase to this enzyme increased the hydolysis rate on gelatinized starches. tut it did not on raw starches. Among various starches, corn starch was favorably hydrolyzed by this enzyme, whereas it acted on potato starch, arrow root starch and high amylose corn starch weakly.

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Effect of the Amount of Water on the Yield and Flavor of Korean Distilled Liquor Based on Rice and Corn Starch (쌀과 전분을 이용한 증류식 소주의 급수 변화에 따른 수율 및 향미 연구)

  • 배상면;정수연;정익수;고현주;김태영
    • Journal of the East Asian Society of Dietary Life
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    • v.13 no.5
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    • pp.439-446
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    • 2003
  • Various volume of water for the optimal brewing condition of the Korean distilled liquor produced by liquefaction of rice and corn starch was investigated Pilot brewings were carried out by the liquefaction of 5kg of rice and 10kg of corn starch with 150%, 200% and 250% of water regarding the amount of rice and corn starch. The pH, alcohol production and total acidity were normal during the fermentation process. The yield was proportional to the amount of water added and the highest yield was obtained by 250% of water addition without loss of quality. All the test results were not significantly different by the one-way ANOVA and Duncan's multiple range test at p<0.05 and the flavor profiles were also not different according to the amount of water added. As a result, 250% of water addition was the most economical and optimal brewing condition in this study.

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Treatment of Corn Starch Wastewater Using an UASB Reactor (UASB 반응조를 이용한 옥수수 전분폐수의 처리)

  • Shin, Hang-Sik;Bae, Byung-Uk
    • KSCE Journal of Civil and Environmental Engineering Research
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    • v.13 no.4
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    • pp.269-275
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    • 1993
  • The performance of Upflow Anaerobic Sludge Blanket(UASB) reactor for treatment of corn starch wastewater was investigated using continuous and batch experiment. Results showed that the corn starch wastewater had different characteristics in terms of biodegradability and methane potential, depending on the manufacturing precess. COD removal efficiencies were maintained over 70% up to the loading rate of 3.2 kg $COD/m^3{\cdot}day$ and the maximum gas production rate was about 55 l/day, equivalent to 3.5 l/day per liter of reactor volume, at the loading rate of 8.4 kg $COD/m^3{\cdot}day$. In the anaerobic serum bottle test(SBT) carried out along with continuous operation, the sludge activity was found to increase from 0.03 to 0.53 g $COD-CH_4/g\;VSS{\cdot}day$ as granular sludges were developed in 130 days operation. SBT gave valuable informations on the characteristics of wastewaters to be treated as well as on the sludge activity. The overall morphological characteristics of granular sludges cultivated on corn starch wastewaters were similar to those cultivated on various organic industrial wastewaters such as distillery and sugar.

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