• Title/Summary/Keyword: gelatinization characteristics

Search Result 274, Processing Time 0.028 seconds

Rheological Properties of Composite Flour and Dough with Concentrated Sweet Pumpkin Powder (농축단호박 분말을 대체한 혼합분과 반죽의 특성)

  • Lee, Chan-Ho;Kim, Mun-Yong;Chun, Soon-Sil
    • Korean journal of food and cookery science
    • /
    • v.24 no.4
    • /
    • pp.511-516
    • /
    • 2008
  • In this study, composite flour and dough were prepared with concentrated sweet pumpkin powder(CSPP) at varying concentrations of 3, 6, 9, 12, and 15%. The samples and a control were then compared with regards to quality characteristics, including moisture, protein, and ash contents, farinogram characteristics, amylogram characteristics, and falling number of flour and extensogram characteristics of dough, in an effort to determine the optimal ratio of CSPP in the formulation. As the CSPP content increased, the moisture and protein contents of the flour increased, whereas the ash contents decreased. With regard to the farinogram characteristics of flour, water absorption, development time, and stability decreased with increasing CSPP content, while weakness increased. The control group evidenced a significantly higher beginning temperature of gelatinization as compared to the CSPP samples. The temperature of maximum viscosity, maximum viscosity, and falling number of flour decreased with increasing CSPP content. With regard to the extensogram characteristics of dough, extensibility decreased with increasing testing time and CSPP content, whereas resistance, maximum resistance, and R/E ratio increased. In conclusion, these results show that $6{\sim}9%$ CSPP may prove very useful as a substitute for wheat flour in the production of hardroll bread, and may provide good nutritional and functional properties.

Characteristics of Noodles with Added Polygonati odoratum Powder (둥굴레 가루 첨가 국수의 제면 특성에 관한 연구)

  • Min, Sung-Hee;Shin, So-Hee;Won, Moon-Jung
    • Journal of the East Asian Society of Dietary Life
    • /
    • v.20 no.4
    • /
    • pp.524-530
    • /
    • 2010
  • The purpose of this study was to determine the characteristics of noodles with added Polygonati odoratum powder. Noodles' water binding capacity increased with increasing amounts of Polygonati odoratum powder. Solubility and swelling power increased with the temperature increasing proportionally to the amounts of added Polygonati odoratum powder. The gelatinization time decreased with increasing of Polygonati odoratum powder. The rate of weight increase and water absorption of cooking noodles decreased with increasing Polygonati odoratum powder. But the turbidity of the soup increased. With increasing Polygonati odoratum powder, L-values were shown to decrease and a and b value were increased. The results of sensory evaluation were that noodles containing under 5% Polygonati odoratum powder were rated as high-quality noodles.

Quality Characteristics of Peeled-Chestnuts Based on the Degree of Gelatinization during Storage (박피 밤의 저장 조건에 따른 품질 변화 분석)

  • Hwang, Ja-Young
    • The Korean Journal of Food And Nutrition
    • /
    • v.22 no.4
    • /
    • pp.587-597
    • /
    • 2009
  • Peeled chestnuts were stored at different temperatures($-10^{\circ}C$ and $-20^{\circ}C$) and after blanching at $90^{\circ}C$ for different lengths of time(0, 10, and 20 min) for 6 months. After the storage period, the texture, color, DSC and sensory characteristics were analyzed. Hardness, fracturability and chewiness increased with storage time, whereas springiness and cohesiveness decreased. Additionally, the L* decreased and a* and b* increased with storage time. Analysis of the DSC revealed that the peak of the retro gradation was approximately $46{\sim}60^{\circ}C$ and enthalpy for the peak increased with storage time. Additionally, the increment of enthalpy for samples stored at $-20^{\circ}C$ and blanched was lower than that of samples stored at $-10^{\circ}C$ and non-blanched samples. The sensory evaluation scores were also higher for samples stored at $-20^{\circ}C$ and blanched samples than for those stored at $10^{\circ}C$ and non-blanched samples.

Quality Characteristics of Seolgiddeok added with Broccoli(Brassica oleracea var. italica Plen.) Powder (브로콜리 분말을 첨가한 설기떡의 품질 특성)

  • Cho, Kyung-Ryun
    • The Korean Journal of Food And Nutrition
    • /
    • v.22 no.2
    • /
    • pp.229-237
    • /
    • 2009
  • Physical, textural and sensory properties of Seolgiddeok prepared with different amounts of broccoli(Brassica oleracea var. italica Plen.) powder were investigated during 3 days of storage. Moisture content decreased gradually during storage and was less in broccoli powder-amended samples. The color L value decreased significantly with increasing broccoli powder, whereas both redness and yellowness increased. Texture analyses revealed that hardness, chewiness, gumminess, adhesiveness and fracturability of Seolgiddeok tended to decrease in proportion to the amount of broccoli powder in the formula. Seolgiddeok gelatinization was investigated using amylographing. Break down and setback were low in broccoli powder Seolgiddeok. Sensory evaluations revealed that, Seolgiddeok prepared with broccoli powder was superior in flavor, chewiness, softness to unamended samples. Seolgiddeok prepared with 3% broccoli powder showed the highest overall acceptability score. Use of broccoli powder in Seolgiddeok preparation improves sensory characteristics and delays retrogradation.

Development of Near Isogenic Lines and Genetic Analysis for Alkali Digestibility of Rice Grain

  • Kim, Kwang-Ho;Kim, Doo-Hwan;Lee, Jeong-Heui
    • KOREAN JOURNAL OF CROP SCIENCE
    • /
    • v.46 no.1
    • /
    • pp.12-16
    • /
    • 2001
  • In order to develop near isogenic lines (NILs) the heterozygous rice plants for alkali digestibility value(ADV) were selected and tested in every generation from $F_5$to $F_9$ of a cross, Seratus malam/Suwon 345. Finally several sets of NILs, which were six low ADV lines and four medium-high ADV lines, were selected among $F_{10}$ lines. No differences of the plant growth characteristics, amylose content and protein content of rice grain were found between low and medium-high ADV lines. Rice flour of low ADV lines showed longer gel length in gel consistency test than medium-high ADV lines, and also showed different gelatinization characteristics measured by rapid visco analyzer compared with medium-high ADV lines. The result of genetic analysis indicated that ADV-NILs developed were differed in a pair of major gene controlling ADV, and low ADV was dominant over medium-high ADV.

  • PDF

Physicochemical Characteristics of Surfactant Added Sweet Potato Starch (Surfactant 를 처리한 고구마 전분의 물리 화학적 특성)

  • Lee, Shin-Kyung;Shin, Mal-Shick
    • Korean journal of food and cookery science
    • /
    • v.8 no.3
    • /
    • pp.255-263
    • /
    • 1992
  • Pasting characteristics and amylose-surfactant complex forming ability of sweet potato starch were investigated after defatting and the addition of surfactants, such as SSL (sodium steamyl-2-lactylate) Dimodan (mono/di glyceride) and SE (sucrose ester) with different concentrations. All starch granules were smooth and round, there were no damages to starch granules after defatting and surfactant addition. amylose content of surfactant added stach decreased and me order of decrease was SSL, SE and Dimodan. The cornplex forming ability of SE added starch increased according to increasing HLB value. As surfactants concentration increased, amylose complex formig ability increased. In case of gelatinization patterns by amylograph, the initial pasting temperature of surfactant added starches was higher than mat of untreated or defatted starches, but viscosity at each temperature were all decreased. Soluble carbohydrate and leached amylose of starches increased at increasing temperature, those of surfactant added starches decreased at each temperature in the order of SSL, SE and Dimodan.

  • PDF

Quality Characteristics of Noodle Supplemented with Skate (Raja kenojei) Skin and Bone Powder (홍어 분말 첨가에 따른 국수의 품질 특성)

  • Kim, Kyung-Hee;Park, Bock-Hee;Kim, Dong-Han;Cho, Hee-Sook
    • Journal of the East Asian Society of Dietary Life
    • /
    • v.18 no.3
    • /
    • pp.353-360
    • /
    • 2008
  • This study evaluated the quality characteristics of dried noodles made of wheat flour supplemented with different concentrations of skate powder. Cooking quality, mechanical texture properties, gelatinization temperature and viscosity were measured, after which sensory evaluation was performed with prepared noodles. Water binding capacity, solubility and swelling power of the composite skate powder and wheat flours were higher than those of pure wheat flour. Gelatinization temperature of the composite skate powder and wheat flours increased, while initial, interim, and maximum-viscosity at $95^{\circ}C$, decreased, with increasing skate powder content. In relation to color values, increasing skate flour content led to decrease in L and b values and increase in a value. For the textural characteristics, the addition of skate powder increased hardness, springiness, chewiness and adhesiveness. Overall, noodles made with 3% skate powder were preferred compared to other samples.

  • PDF

Quality Characteristics of Semi-Dry Noodles Prepared with Various Dry Rice Flours (건식 쌀가루 첨가 반건면의 품질특성)

  • Park, Bock-Hee;Koh, Kyeong-Mi;Jeon, Eun-Raye
    • Human Ecology Research
    • /
    • v.58 no.1
    • /
    • pp.121-130
    • /
    • 2020
  • This study evaluated the quality characteristics of semi-dried noodles prepared with various dry rice flours (0, 25, 50, 75, and 100%) in order to develop the most preferred noodle recipe and to increase rice consumption. Amylography measured the viscosity of composite dry rice flour-wheat flour and indicated that the gelatinization point and maximum viscosity decreased as the level of dry rice flour increased. Both L and a values for cooked noodle significantly increased as the dry rice flour increased; however the L value decreased for uncooked of noodles. Weight, volume and water absorption of cooked semi-dried noodles significantly decreased as the dry rice flour increased; however the turbidity of soup increased. Texture properties such as hardness, springiness, cohesiveness, and adhesiveness decreased as the level of dry rice flour increased. As the amount of rice flour added increased, large particles of gluten were reduced while smaller particles of starch increased by scanning electron microscopy (SEM). The color, taste, and overall preference of 75% noodles were the highest in the sensory characteristics. The results, showed that the addition of dry rice flour positively affects the overall sensory characteristics of semi-dried noodle with 75% representing the optimal level for addition.

Quality Characteristics of Dumpling Shell Containing Boehmeria nivea Powder (모시잎 분말 첨가에 따른 만두피의 품질 특성)

  • Park, In-Duck
    • Journal of the Korean Society of Food Culture
    • /
    • v.33 no.3
    • /
    • pp.268-275
    • /
    • 2018
  • This study examined the effects of Boehmerianivea powder on the functional and sensory characteristics of dumpling shell. Various dumpling shell samples were prepared with wheat flour containing different amounts of Boehmerianivea powder. The instrumental characteristics were examined and sensory evaluations were performed. According to the amylograph data, the composite Boehmerianivea powder-wheat flour samples had increased gelatinization temperatures with increasing Boehmerianivea powder content; whereas the initial viscosity at $95^{\circ}C$, viscosity at $95^{\circ}C$ after 15 minutes, and the maximum viscosity were reduced. The L, a and b Hunter's color values decreased with increasing Boehmerianivea powder content. In addition to the cooked weight, the cooked volume and turbidity of dumpling shell increased with increasing level of Boehmerianivea powder. In terms of the textural characteristics, the addition of Boehmerianivea powder increased the chewiness, smoothness and adhesiveness. The DPPH free radical scavenging activity increased significantly with increasing content of Boehmerianivea powder (p<0.05). Finally, the results of the sensory properties indicated that 5% Boehmerianivea powder had the highest scores. These results suggest that Boehmerianivea powder can be applied to dumpling shells to achieve high quality and functionality.

Quality Characteristics of Mandupi Added with Curcuma aromatica Powder (강황분말을 첨가한 만두피의 품질특성)

  • Park, Bock-Hee;An, Sung-A;Cho, Hee-Sook
    • Journal of the Korean Society of Food Culture
    • /
    • v.29 no.4
    • /
    • pp.348-354
    • /
    • 2014
  • The purpose of this study was to investigate the effects of Curcuma aromatica powder on the functional and sensory characteristics of Mandupi. Various Mandupi samples were prepared with wheat flour along with addition of various amounts of Curcuma aromatica powder, after which instrumental characteristics and sensory evaluations were investigated. According to the amylograph data, the composite Curcuma aromatica powder-wheat flour samples showed increased gelatinization temperatures with increasing Curcuma aromatica powder content, whereas initial viscosity at $95^{\circ}C$, viscosity at $95^{\circ}C$ after 15 minutes, and maximum viscosity were reduced. In terms of Hunter's color values, L value decreased while a and b values increased with increasing Curcuma aromatica powder content. Besides cooked weight, cooked volume and turbidity of Mandupi increased as the addition level of Curcuma aromatica powder increased. In terms of textural characteristics, addition of Curcuma aromatica powder increased springiness, chewiness, and brittleness, whereas springiness and adhesiveness decreased. Based on sensory evaluations, the overall preference of Mandupi with 3% added Curcuma aromatica powder was higher than that of control.