• Title/Summary/Keyword: 수분손실

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Moisturizing Effects and Composition Analysis of Proteoglycan Isolated from Chia (Salvia hispanica) Seed (치아 씨앗으로부터 분리한 단백다당체의 성분분석과 보습 효과)

  • Lee, Bum-Chun;Joo, Chul-Gue;Hur, Ji-Yeon;Lee, Keun-Ha;Kim, Young-Jin;Lee, Chan-Woo;Kim, Jin-Woong;Park, Yong-Il;Kim, Hyun-Sook;Choe, Tae-Boo
    • Journal of the Society of Cosmetic Scientists of Korea
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    • v.36 no.2
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    • pp.121-128
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    • 2010
  • We investigated the effects of skin hydration and composition analysis of proteoglycan (chia seed polymer) produced from chia (Salvia hispanica) seed. The result showed that proteoglycan of chia seeds is composed of galactose (46.8 %), glucuronic acid (27.1 %), rhamnose (8.7 %), xylose (7.6 %), glucose (4.9 %), fructose (2.3 %), mannose (1.8 %), arabinose (0.9 %) and the amount of proteins contained is 31.3 mg/g with the constituent amino acid compositions (mg/g) of Asp (1.9), Glu (3.6), Ser (0.9), Gly (3.6), Thr (0.8), Arg (1.0), Ala (2.0), Tyr (0.4), Cys (4.8), Val (1.1), Phe (0.5), Ile (0.6), Leu (0.9). The molecular weight of the proteoglycan measured by GPC (Gel Permeation Chromatography) is the range of 100,000~250,000 Da and the average molecular weight is 170,000 Da. The moisturizing effects and trans-epidermal water loss (TEWL) of chia seed polymer in cosmetic products (O/W emulsion) were studied in vivo. Chia seed polymer showed good skin hydration effects when compared with sodium hyaluronate which is a common moisturizer. Taken all together, chia seed polymer should be a very useful cosmetic ingredient as a moisturizer and a protecting agent from various skin irritations.

Studies on the Physiological and Sensory Properties of Herb Bread (허브를 첨가한 빵의 물성학적 및 관능적 특성 연구)

  • 박인덕;정동옥
    • Korean journal of food and cookery science
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    • v.19 no.5
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    • pp.539-545
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    • 2003
  • The physiological and sensory properties of breads, prepared with wheat flour substituted with various herbs, were evaluated. The specific gravities and maximum heights of the breads increased when the wheat flour was supplemented with 1% rosemary, lemon balm or lavender, and with 3% rosemary, but not with 3% lemon balm or lavender. The fermentation and cooling losses of the breads with added herbs were smaller than those of the control, but there was no significant difference in the baking loss. The lightness of the breads decreased with increases in the herb contents. In the texture measurements for the breads, the hardness decreased slightly on the addition of 1% of the herb powders, but increased on the addition of 3% of the herb powders. As for the results of the sensory evaluation, the overall acceptances of the breads with 3% added herbs were higher than those of the control and 1% added herb breads. The addition of herbs to the breads inhibited the growth on fungi, and the more herbs substituted, the higher the degrees of this inhibition. The moisture contents were slightly increased, and the staling rates during storage at 25 decreased, in breads with added herbs. These results suggest that the shelf-lives of the breads were extended by the addition of herbs.

Research on the Effectiveness of Diagnostic Ultrasound Transmission Media (초음파진단 시 전파매질의 유용성)

  • Lee, Hye-Nam
    • The Journal of the Korea Contents Association
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    • v.15 no.1
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    • pp.324-330
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    • 2015
  • When diagnostic ultrasounds are used, an ultrasonic transmission media is used to effectively transmit the ultrasonic energy. Types of ingredients of polymer hydro gel, emulsion, and oil gel were compared with commercialized products by measuring characteristics of ultrasonic transmission media such as skin lubricity, skin moisturizing, and dryness speed which were contained in each different media. The mean friction coefficient measured to investigate skin lubricity showed high in the agent containing a large amount of oil, whereas the mean friction coefficient of the low viscosity emulsion did not show a significant difference with that of the polymer hydro gel. The moisture evaporation measured to investigate the dryness speed of the agent showed highest in polymer hydro gel. This showed that the larger amount of oil it had, the less moisture evaporation occurred. For skin moisture measured to investigate moisturizing characteristics of skin, low viscosity emulsion showed high in moisture content, whereas it showed slowest reduction in moisture content. As a type of emulsion appropriately containing water and oil is superior in skin moisturizing and skin tenderness, it is expected to serve as a dosage form of new ultrasonic transmission media.

Physicochemical Assessment of Quality Characteristics of Extruded Barley Under Varied Storage Conditions -II. Non-enzymatic Browning- (상이한 조건하에서 저장한 압출보리의 품질특성에 관한 이화학적 평가 -제 2 보 : 비효소적 갈색화-)

  • Shin, Hyo-Sun;Gray, J. Ian;Cuppett, Susan L.
    • Korean Journal of Food Science and Technology
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    • v.15 no.3
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    • pp.287-294
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    • 1983
  • Change of color, browning index, soluble protein, reducing sugar content, and available lysine were monitored for raw and extruded barely powders during four months of ambient and accelerated storage temperatures with $A_w$ of 0.31 and 0.71, respectively. Loss of whiteness and soluble browning pigments increased with increased $A_w$ and temperature. The raw sample had an increased rate of browning intensity than the extruded samples. Among the extruded samples, the added sucrose sample had the lowest rate of browning during storage. Loss of reducing sugar content in all samples increased with increased $A_w$ and temperature. The loss of soluble protein and of the available lysine also increased with increased $A_w$ and temperature. The loss of reducing sugar and of the available lysine was at least partly due to the Maillard browning reaction. These results have important implications in teh processing and storage of raw and extruded burleys.

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Quality Characteristics of Muffin with Saccharin (사카린을 첨가한 머핀의 품질특성)

  • Kim, Eunji;Lee, Kwang-Suck
    • Culinary science and hospitality research
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    • v.21 no.3
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    • pp.1-12
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    • 2015
  • The purpose of this study was to investigate the quality characteristics of muffins prepared with saccharin. The effect of saccharin was evaluated in terms of height, weight, volume, specific volume, baking loss rate, image analysis, color, texture, moisture contents and acceptance test. Height, weight, volume and specific volume of muffins increased with the addition of saccharin. The baking loss rate of the samples containing saccharin was lower than those of the control group. Crust thickness of muffins containing saccharin evaluated with crumbScan decreased as the content of saccharin increased. Lightness of crust decreased significantly as contents of saccharin decreased, whereas lightness of crumb increased. Control without saccharin showed the most hardness by TPA. During storage, moisture contents increased significantly as the amount of saccharin increased. According to the acceptance test, muffins with saccharin exhibited higher scores than muffins with sugar except for color of crust and flavor. In particular, Samples 1 and 2 had the highest scores. Based on the above results, the addition of saccharin would be appropriate for making muffins.

Quality Characteristics of Madeleine Added with Lentil (Lens culinaris) Powder (렌틸콩 분말을 첨가한 마들렌의 품질 특성)

  • Bae, Dan-Bi;Kim, Kyoung-Hee;Yook, Hong-Sun
    • Journal of the Korean Society of Food Science and Nutrition
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    • v.45 no.12
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    • pp.1816-1822
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    • 2016
  • This study investigated the quality characteristics and antioxidant activities of madeleine added with lentil powder (LP). Madeleine was prepared with flour levels of lentil powder (0, 20, 40, and 60%). The pH, moisture, and specific gravity of madeleine decreased with increasing amounts of LP, whereas loss rate increased. Hunter L and b values of crust decreased with increasing amounts of LP, whereas a value of crust increased (P<0.05). Hunter L and b values of crumb increased with increasing amounts of LP, whereas a value of crumb decreased (P<0.05). For texture of madeleine with increasing amounts of LP, hardness and adhesiveness increased, whereas springiness, cohesiveness, and chewiness were reduced. DPPH radical scavenging activity of LP madeleine significantly increased with increasing amounts of LP (P<0.05). In the sensory evaluation of appearance, color, flavor, texture, taste, and overall preference, madeleine with LP 20% showed the highest value. It is suggested that LP 20% madeleine could be substituted for wheat flour to improve madeleine quality.

Eco-physiological Characteristics of Rice Leaves and Wind Damage by Typhoon (태풍에 의한 벼 엽신손상과 엽신 특성과의 관계)

  • 양의석;강양순;정연태;정근식
    • KOREAN JOURNAL OF CROP SCIENCE
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    • v.33 no.2
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    • pp.201-204
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    • 1988
  • To find out the relationship between the eco-physiological characteristics and wind damage of rice leaves by typhoon 'Thelma' occurred at young panicle formation stage of rice plant, the study was carried out. The rate of dead leaves by wind damage in Indica X Japonica varieties were higher than that in Jap. varieties. Ind. X Jap. varieties which had erect and broader leaves had the higher number of silicified cell, moisture loss and stomatal aperture in leaves. And the wind damage were positvely correlated with the characteristics such as the number of silicified cell (r=0.7546$\^$*/), rate of moisture loss (r=0.8343$\^$**/) and stomatal aperture (r=0.8460$\^$**/) of rice leaf blade etc.

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THE EFFECT OF EARLY WATER CONTACT ON GLASS-IONOMER CEMENTS (Glass ionomer cement초기 경화시 수분접촉의 영향에 관한 연구)

  • Um, Chung-Moon;Oilo, Gudbrand
    • Restorative Dentistry and Endodontics
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    • v.18 no.2
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    • pp.507-513
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    • 1993
  • The purpose of this study was to observe the effect of immersion in water at 3, 5, 7, and 10 minutes after mixing on the surface of three regular and one light-curing glass-ionomer cement by measuring penetration of a methylene blue solution. Early solubility of these cements was also measured and compared with that of a zinc phosphate and a polycarboxylate cement. A blue-stained zone was observed in all glass-ionomer cement, but an inner, opaque zone was observed in only two of the regular glass-ionomer cements. Extending the time between start of mixing and immersion on water decreased the width of both zones in all cements and markedly lowered the loss of substance from the surface of regular glass-ionomer cements. However, time after mixing had no or only a limited effect on the loss of substance from the light-curing glass-ionomer cement, the zine phosphate cement, or the polycarboxylate cement.

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Preparation and Characterization of Gel Food for Elderly (고령자용 겔상식품의 제조 및 특성연구)

  • Han, Ji-Soo;Han, Jung-Ah
    • Korean Journal of Food Science and Technology
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    • v.46 no.5
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    • pp.575-580
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    • 2014
  • Model gel food samples of yanggaeng (Y) were prepared for the elderly with various gelling agents, including agar (AG), low acyl gellan (GL), ${\kappa}$-carrageenan (CA), locust bean gum (LB), glucomannan (GM), and xanthan gum (XA) in different combinations as follows (in 1:1 ratio): LB+CA, GM+XA, and GM+CA. The quality characteristics of the different combinations were compared. The results revealed that water loss was highest for Y-GL, whereas there was no significant difference among the other samples. Y-GL showed the highest values for lightness in color, whereas Y-AG showed the lowest. Regarding textural properties, Y-LB+CA had the highest hardness value, whereas Y-GL had the lowest; the hardness of Y was related to the cross-section of the added gel. Finally, Y-GM+XA exhibited the highest score in overall acceptability in the sensory test by elderly, indicating that the preferable texture by elderly is slightly chewy, but not adhesive.

Quality Characteristics of Cookies Made with Flaxseed Powder (아마씨 가루를 첨가한 쿠키의 품질특성)

  • Kim, Su-Yean;Chung, Hai-Jung
    • Food Engineering Progress
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    • v.15 no.3
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    • pp.235-242
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    • 2011
  • This study was conducted to investigate the quality characteristics of cookies added with different levels of flaxseed powder. Cookies were prepared with four different levels (0%, 6%, 12% and 18%) of flaxseed powder and the physicochemical properties were examined. The pH of cookie dough was higher in cookies containing flaxseed powder. The spread factor of control cookie was lower than that of cookies containing 6%, 12% and 18% of flaxseed powder. The incorporation of flaxseed powder in cookies lowered lightness and yellowness but increased redness values. Rheology testing showed that cookies with 6%, 12% and 18% flaxseed powder had significantly lower hardness value than control cookies (p < 0.05). Consumer acceptance test revealed that overall preference score was the highest in cookies containing 12% flaxseed powder. During storage at $55^{\circ}C$ for 60 days, peroxide value increased until 30 days of storage and decreased thereafter, while acid value steadily increased and there was no significant difference in peroxide value and acid value between control cookies and flaxseed added cookies.