• Title/Summary/Keyword: SUGAR

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The Changes in Quality of Sugars Chestnuts by Sugars and Heating Methods (당의 종류 및 가열방법에 따른 당침밤 제품의 품질 변화)

  • 홍순갑;황태영
    • Food Science and Preservation
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    • v.4 no.2
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    • pp.173-180
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    • 1997
  • The effects of sugars and heating methods on the sugar infilteration, hardness, color and organoleptic characteristics were investigated for quality improvement of sugared chestnuts. Among the tested sugars, isomaltooligosugar was the most effective on the rate of sugar infilteration. High temperature increased the rate of sugar infilteration during sugaring process, but color and flavor were deteriorated at 9$0^{\circ}C$. The most suitable temperature for sugaring process was 7$0^{\circ}C$. The product sugared with fructooligosugar recoreded the highest score in hardness, odor and preference than any other sugars tested and increased the rate of sugar infilteration when mixed with sugar at same amount. The changes of soluble solids in chestnuts boiled with microwave oven were ranged from 18。Brix to 32。Brix, while chestnuts heated in general were from 18。Brix to 28。Brix. Chestnuts boiled with microwave heating were sugared rapidly. The hardness of boiled and sugared chestnuts was lower when treated with microwave than with general heating. Hunter's L and b value of sugared chestnut treated with microwave decreased during processing but a value somewhat increased.

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The Effects on Quality Characteristics Resulting from the Use of Varying Amounts of Garlic as Additives in Apple Jams (마늘의 첨가가 사과잼의 품질특성에 미치는 영향)

  • 김기숙;백승희
    • Korean journal of food and cookery science
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    • v.14 no.5
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    • pp.553-559
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    • 1998
  • Influence of garlic on the quality characteristics of apple jam was investigated. Apple jams with various amounts of sugar and garlic were prepared, and their sweetness, color difference, and instrumental texture were evaluated. The results were as follows: 1. When equal amount of sugar was added, the sweetness of apple jam decreased as the garlic content increased. 2. As the garlic content increased, the lightness and yellowness tended to be high and the redness and ΔE tended to be low, resulting that the color of apple jam was improved. 3. As the sugar content increased, the hardness and adhesiveness of the jam tended to increase when garlic was added at 10%. 4. Apple jam with 60% sugar and 10% garlic was the best in adhesiveness, glossiness, and overall quality by sensory evaluation. As the addition of garlic did not cause any significant difference in flavor, cooked garlic could be applied in apple jams.

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Nondestructive Measurement of Sugar.Acid Contents in Fruits Using Spectral Reflectance (분광 반사 특성을 이용한 주요 과실의 비파괴 당.산도 측정)

  • 노상하;김우기;이종환
    • Journal of Biosystems Engineering
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    • v.22 no.2
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    • pp.247-255
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    • 1997
  • This study was conducted to develop regression models predicting sugar and acid contents in intact fruits nondestructively by using the second derivative of absorbance spectrum measured with a spectrophotometer wavelength range of 400nm to 2, 400nm. The correlation analysis was made in wavelength range of 600nm to 1, 100nm and 600nm to 2, 400nm respectively, in order to examine the feasibility of using a real time spectrophotometer, which covers the former range, in predicting sugar and acid contents. The second derivative data of the spectrum were obtained by varying smoothing size and derivative size of the original absorbance spectrum. SAS statistical package program was used for the regression analysis. The sugar contents of Fuji apple, Shingo pear md Yumyung peach could be predicted with SEPs of 0.40, 1.17 and 0.77 respectively, in the spectrum range of 600 to 1, 100nm. The highest correlation coefficient of the titratible acidity of apple was -0.45 at 2, 346nm and regression models indicated determination coefficient less than 0.47.

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The Effect on the Dissolution Rate of Sulfamerazine from Sugar Glass Dispersion System (Sulfamerazine-Sugar Glass Dispersion의 용출속도에 관한 연구)

  • Ku, Young-Soon;Sung, Kyung-Soo
    • YAKHAK HOEJI
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    • v.34 no.3
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    • pp.192-198
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    • 1990
  • Three sugar glass dispersions of sulfamerazine were prepared using dextrose, galactose and sucrose as the carriers, with the ratio of the drug to the carrier was 1:9. The chemical stability of sulfamerazine in the glass dispersion system was studied using TLC. TLC revealed no additional spot and there was good correspondence with the Sulfamerazine itself. While time required to dissolve 50%($T_{50%}$) of sulfamerazine powder was 390 min that of dextrose glass dispersion system was 1.5 min. and galactose system was 4.0 min. in distilled water. 23) $T_{50%}$ of physical mixture with dextrose, galactose and sucrose were 26.4 min., 26.5 min., and 26.0 min. respectively in distilled water. $T_{50%}$ of control was 54 min. and those of all of the glass dispersion systems were within 1 min. in 0.1N HCl. The dissolution rates of sulfamerazine from sugar glass dispersion system in distilled water was greater than that in 0.1N HCl.

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The Optimal Mixing Ratio for Omi-Galsu Concentrate Production (오미갈수(五味渴水) 원액 제조의 최적 배합 비율)

  • Han, Eun-Sook;Rho, Sook-Nyung
    • Journal of the East Asian Society of Dietary Life
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    • v.18 no.1
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    • pp.29-40
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    • 2008
  • The primary objective of this study was to determine the optimal mixing ratio in preparing Omi-Galsu concentrate. By varying the amounts of Omija extract, mung bean juice, and sugar in the concentrate mixture, we found that pH increased with greater amounts of Omija extract and sugar. According to sensory evaluations, sugar and total free sugar contents were highest when the mixing ratio was 1:1:20%(Omija extract, mung bean juice, and sugar respectively). This ratio also presented the most attractive color and highest overall acceptability.

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Inhibition effect of sugar concentrations on the cell growth andthe pullulan production of aureobasidium pullulans (Aureobasidium pullulans의 성장 및 플루란 생산에 미치는 고농도당의 저해효과)

  • 신용철;한종권;김영호;이현수;변시명
    • Korean Journal of Microbiology
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    • v.25 no.4
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    • pp.360-366
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    • 1987
  • For the production of pullulan from the high concentration of sugar, the utilization of sugars by a pullulan-producing fungus, Aureobasidium pullulans was examined. A. pullulans showed the different utilization patterns for sugars such as sucrose, maltose, and maltotriose. Especially for maltotriose, the hydrolysis of sugar was accompanied by a transferase activity. Glucose and maltose showed the inhibitory effect on the cell growth and the pullulan production at the sugar concentration higher than 0.28M, but sucrose showed the inhibitory effect at the sugar concentration higher than 0.14M. Among the sugars examined, sucrose gave the best result for the pullulan production. 27.5g/l of pullulan was obtained from 5% sucrose.

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Reducing sugar content in processed foods using high intensity sweeteners (고감미도 감미료(High Intensity Sweeteners)를 이용한 당류저감화)

  • Han, Tae-Chul;Seo, Il;Lim, Hye-Jin;Kih, Min-Ji
    • Food Science and Industry
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    • v.49 no.3
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    • pp.29-39
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    • 2016
  • Recently, due to the cognition that obesity is the cause of adult diseases, interests of consumers in low-sugar and low-calorie foods are growing more and more. While various policies are being implemented to reduce sugar contents in processed foods, the reduced sweetness caused by lesser sugar content is complemented by using high-intensity sweeteners. Some of the typical high-intensity sweeteners are sucralose, aspartame, acesulfame potassium and stevia, etc. Since the relative sweetness degree, sweetness profile, and physical properties of these sweeteners should be different from one another, it is important that all these characteristics are well-understood before applying them. Thus, the objective of this study is to introduce the properties and applications of high-intensity sweeteners in order to reduce sugar content of processed foods.

Quantitative Analysis of Hydrate of Sugar-based Super Retardign Agent Mixed Cement Paste Using Rietveld Method (리트벨트법을 이용한 당류계 초지연성 혼화제 혼입 시멘트 페이스트의 수화생성물 정량 분석)

  • Hyun, Seung-Yong;Hu, Yun-yao;Kim, Su-Hoo;Kim, Jong;Han, Min-Cheol;Han, Cheon-Goo
    • Proceedings of the Korean Institute of Building Construction Conference
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    • 2021.11a
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    • pp.74-75
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    • 2021
  • This study attempted to study the setting time and compressive strength according to the sugar type through XRD. Setting time was found to be delayed the most when mixing white sugar, and setting time was promoted when mixing Saccharin and Aspartame. It was found that when white sugar and Grosvener siraitia were mixed, the compressive strength was higher than that of Control. Aspartame the age passed, C3S decreased and Ca(OH)2 increased.

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The Relationship between the Sugar Preference of Bacterial Pathogens and Virulence on Plants

  • Ismaila Yakubu;Hyun Gi Kong
    • The Plant Pathology Journal
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    • v.39 no.6
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    • pp.529-537
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    • 2023
  • Plant pathogenic bacteria colonize plant surfaces and inner tissues to acquire essential nutrients. Nonstructural sugars hold paramount significance among these nutrients, as they serve as pivotal carbon sources for bacterial sustenance. They obtain sugar from their host by diverting nonstructural carbohydrates en route to the sink or enzymatic breakdown of structural carbohydrates within plant tissues. Despite the prevalence of research in this domain, the area of sugar selectivity and preferences exhibited by plant pathogenic bacteria remains inadequately explored. Within this expository framework, our present review endeavors to elucidate the intricate variations characterizing the distribution of simple sugars within diverse plant tissues, thus influencing the virulence dynamics of plant pathogenic bacteria. Subsequently, we illustrate the apparent significance of comprehending the bacterial preference for specific sugars and sugar alcohols, postulating this insight as a promising avenue to deepen our comprehension of bacterial pathogenicity. This enriched understanding, in turn, stands to catalyze the development of more efficacious strategies for the mitigation of plant diseases instigated by bacterial pathogens.

Synthesis of Glucosyl-sugar Alcohols Using Glycosyltransferases and Structural Identification of Glucosyl-maltitol

  • Kim, Tae-Kwon;Park, Dong-Chan;Lee, Yong-Hyun
    • Journal of Microbiology and Biotechnology
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    • v.7 no.5
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    • pp.310-317
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    • 1997
  • Enzymatic synthesis of glucosyl-sugar alcohols using various transglycosylating enzymes, such as cyclodextrin glucanotransferase (CGTase), ${\alpha}$-amylase, ${\alpha}$-glucosidase, and pullulanase was investigated using various sugar alcohols, such as sorbitol, xylitol, inositol, maltitol, and lactitol as glucosyl acceptors. CGTase showed the highest transglycosylating activity to sugar alcohols compared to other transglycosylating enzymes, and inositol and maltitol were the most suitable glucosyl acceptors. Soluble starch, extruded starch, cyclodextrins, and maltooligosaccharides were also identified to be adequate glucosyl donors for transglycosylation reaction of CGTase to sugar alcohols. The synthesis of glucosyl-maltitol in the reaction system using extruded starch as the glucosyl donor and maltitol as the glucosyl acceptor showed the best results showing the highest transglycosylation yield. The transglycosylation products were purified by activated carbon column chromatography with ethanol gradient elution. Chemical structures of above transglucosylated products were analyzed by nuclear magnetic resonance spectroscopy, and two products were identified to be maltotritol and maltotetraitol, in which one or two glucose molecules attached to the parent maltitol molecule by a ${\alpha}$-l,4-glucosidic bond, respectively.

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