• Title/Summary/Keyword: sun-dry

Search Result 956, Processing Time 0.026 seconds

Influence of Dry Methods on Qualities of Artemisia sp. (쑥의 건조 방법에 따른 품질 변화)

  • Park, Sung-Ok;Kim, Choong-Ho
    • Culinary science and hospitality research
    • /
    • v.12 no.3 s.30
    • /
    • pp.108-118
    • /
    • 2006
  • This study is on different dry methods for Artemisia sp. which were not affected by the dry matter percent. Essential oil components such as 1,8-cineol and terpineol were highly affected by the dry method. 1,8-cineol and terpineol components were decreased by adaptation of the heated oven-drying method and the freeze-drying method. Borneol components were increased through shady sun-drying, sun-drying and freeze-drying. Heated oven drying method decreased the vitamin C content. Vitamin C content was decreased in oven-drying about 50% during this period, but only 10% decreased in the freezing dry method. Qualities were changed by different drying methods. Therefore, different dry methods of Artemisia sp. were applied to the flavorgen.

  • PDF

Engineering Properties of Lightweight Aggregate Concrete Using Dry Bottom Ash as Coarse Aggregate (건식 바텀애시 굵은골재를 사용한 경량골재 콘크리트의 공학적 특성)

  • Sung, JongHyun;Sun, JungSoo;Choi, SunMi;Bok, YoungJae;Kim, JinMan
    • Proceedings of the Korean Institute of Building Construction Conference
    • /
    • 2013.11a
    • /
    • pp.166-167
    • /
    • 2013
  • Bottom ash, which is discharged through a wet process in a thermal power plant, contains much unburned coal due to quenching and much salt due to seawater. However, dry bottom ash discharged through a dry process contains low unburned coal and salt, and has light -weight due to many pores. Therefore, it is expected that it can be used as lightweight aggregate. This study deals with the basic properties of concrete used dry bottom ash as coarse aggregate. As a results, the concrete having high content of dry bottom ash aggregate showed high slump by using water reducing agent and its air content was within 5±1.5% as designed value, similarly to normal weight concrete. It also showed a lower compressive strength than 100% of crushed stone.

  • PDF

Degradation of Acid Soluble Nucleotides and Their Related Compounds in Sea Foods during Processing and Storage -IV. Changes of Nucleotides and Their Related Substances in Octopus Octopus vulgaris during Sun Drying and Storage- (수산식품의 가공 및 보장 중의 핵산관련 물질의 변화에 관한 연구 -IV. 왜문어의 천일건조 및 저장 중의 핵산관련물질의 변화-)

  • Park, Yeung-Ho;Lee, Eung-Ho
    • Korean Journal of Food Science and Technology
    • /
    • v.4 no.4
    • /
    • pp.317-321
    • /
    • 1972
  • Octopus Octopus vulgaris was dried with open air at $17{\sim}20^{\circ}C$ for 90 hours. Nucleotides and related substances were collected by extraction with cold perchloric acid, and their amounts were determined by ion exchange column chromatography. The contents of inosine, hypoxanthine and ADP in raw sample were 9.4, 5.1 and 4.1 ${\mu}mole/g{\cdot}dry\;wt.$ respectively. ATP and AMP were very low in content. But IMP was not detected in Octopus muscle. ATP, ADP and inosine tended to degrade rapidly during sun drying while AMP and hypoxanthine were increased. Especially, hypoxanthine were increased about three times during sun drying and also it was increased about two times during three months storage after sun drying.

  • PDF

Effect of Different Light Intensities on the Growth and Leaf Gas Exchanges in Miscanthus sinensis and Pennisetum purpurascens (참억새 및 수크령의 광도차에 따른 생육변화 및 가스교환에 미치는 영향)

  • Kwack, Hye Ran;Lee, Jong Suk
    • Journal of the Korean Society of Environmental Restoration Technology
    • /
    • v.7 no.1
    • /
    • pp.110-115
    • /
    • 2004
  • This experiment was conducted to investigate the effect of light intensities on the growth responses, carbohydrate contents and the characteristics of leaf gas exchange in Miscanthus sinensis and Pennisetum purpurascens. The plant height and leaf length were increased to about 30% in the sun. However, those were reduced severely in the shade, and leaf necrosis was also observed. The representative growth index and the dry weight of 2 species were 50% higher than shade and the rate was reduced according to the decrease of light intensities. Total carbohydrate contents showed very similar changes to that of dry weight. However, any notable influences were observed at above the light intensities of 250~500${\mu}mol{\cdot}m^{-2}{\cdot}s^{-1}$ in the half shade. The size of spikes and the earliest spiking appeared in the sun and the spike color was decolorized as decreased in light intensities, irrespective of species. Photosynthetic rate of 2 species was 2 times higher in the sun than those in the shade, and it showed the typical photoresponses of sun plant. Stomatal conductances and intercelluar $CO_2$ concetration showed similar changes to that of photosynthetic rate. On the contrary, vapor pressure deficit was increased more in the shade than in the sun.

The Effects of Korean Traditional Sauces on Quality Characteristics of Hanwoo Semitendinosus Dry-cured Ham (한국 전통장류가 한우 반힘줄모양근(M. Semitendinosus)으로 제조한 건염햄의 육질 특성에 미치는 영향)

  • Seong, Pil-Nam;Cho, Soo-Hyun;Kang, Geun-Ho;Kim, Dong-Hoon;Park, Beom-Young;Kang, Sun-Moon;Park, Kyoung-Mi
    • Food Science of Animal Resources
    • /
    • v.33 no.6
    • /
    • pp.757-762
    • /
    • 2013
  • This study was conducted to develop a processing method for dry-curing beef ham with Korean traditional sauces and to investigate the quality properties of the dry-cured beef hams. Semitendinosus muscle from Hanwoo was spread with sundried salt (C), sun-dried salt mixed with red pepper paste (T1), and sun-dried salt mixed with soybean paste (T2), and inserted into washed Hanwoo large intestine. It was then dried and fermented for 75 d. Moisture contents of the hams were 46-48%, without any significant differences. T1 showed the lowest pH among the three dry-cured hams, while water holding capacity (WHC) of T2 was found the lowest (p<0.05). In mechanical color determination, C showed higher CIE $a^*$ and CIE $b^*$ than T1 and T2 (p<0.05), however CIE $L^*$ did not show any significant difference. In texture, T1 demonstrated significantly lower springiness than C (p<0.05). The sensory properties of all dry-cured hams did not show any significant difference, but T1 indicated a higher taste, saltiness and overall acceptability than others, whereas C gathered the highest score in color and flavor. In conclusion, the dry-curing by combination of sun-dried salt mixed with red pepper sauce (T1) showed higher quality properties of the Hanwoo dry-cured ham.

Investigations on Relationship between Fractal Dimension and 3-D Surfaces Topography of C.G. Irons under Dry Sliding

  • Yongzhen, Zhang;Gesen, Sun;Lemin, Sun;Weimin, Liu;Bao, Shangguan;Yue, Chen
    • Proceedings of the Korean Society of Tribologists and Lubrication Engineers Conference
    • /
    • 2002.10b
    • /
    • pp.253-254
    • /
    • 2002
  • Based on 3-D surface morphology measurements of C.G. irons, the fractal analyses were made on relationship between dry sliding surface morphology and the fractal dimension. It is revealed that the values of fractal dimensions ($D_f$) of sliding surfaces are in the range between 1-2, which are closely related to the surface morphologies. With the increase in depths of grooves or pits, the $D_f$ values increase. At the same time, the increases in densities of the grooves also cause the $D_f$ values to increase. At last, relationship among $D_f$ and friction coefficient as well as wear rate is discussed.

  • PDF

Experimental Study on Dry Shrinkage Deformation of Concrete with Popular Shrinkage Reducing Admixture (보급형 균열저감 콘크리트의 건조수축 변형에 관한 실험적 연구)

  • Kim, Young-Sun;Kim, Kwang-Ki;Lee, Joo-Ho;Kim, Bo-Seung;Kim, Jung-Sun
    • Proceedings of the Korean Institute of Building Construction Conference
    • /
    • 2016.05a
    • /
    • pp.151-152
    • /
    • 2016
  • In this study, the shrinkage properties of concrete with the high-performance shrinkage admixture and the crack reinforcing materials applied to the high-flatness flooring of hypermarkets, outlets and warehouses was evaluated. The concrete with the popular shrinkage admixture is significantly reduced compared to the plain concrete without shrinkage admixture for the dry shrinkage deformation, and the difference of shrinkage ratio between the concretes has been shown to increase with increasing age.

  • PDF

Effect of rewetting agent on dentinal microtensile bond strength

  • Kang, Hee-Young;Cho, Young-Gon
    • Proceedings of the KACD Conference
    • /
    • 2003.11a
    • /
    • pp.568-568
    • /
    • 2003
  • I. Objectives This study investigated the effect of rewetting agent on dentinal microtensile bond strengths(${\mu}TBS$), using one bottle adhesives. II. Materials and Methods Non caries human molars were sectioned to exposed the superficial dentin surfaces, etched 15 seconds using 32% phosphoric acid and 10 seconds rinsed. Samples were randomly divided into two groups according to adhesives (Single Bond, One-Step) used. Each group were subdivided into five groups by different dentin surface treatment:15 second dry(D), blot dry(BD) or 15 second dry and rewetted with distrilled water(DW), Gluma Desensitizer(GD) and Aqua-Prep(AP) during 30 second, respectively.(omitted)

  • PDF

Pheophytin Content and Cytotoxicity of Silkworm Feces Against Jurkat Cells According to Dry Method and Storage Period

  • Ahn, Mi-Young;Kim, Iksoo;Ryu, Kang-Sun;Kim, Jin-Won;Lee, Heui-Sam;Lee, Pyeong-Jae;Ko, Si-Hwan;Lee, Won-Young
    • International Journal of Industrial Entomology and Biomaterials
    • /
    • v.8 no.2
    • /
    • pp.135-138
    • /
    • 2004
  • In order to find potential anticancer agents, we extracted pheophytin from silkworm feces according to various dry and storage methods such as sun dry, shade dry, fresh freezing dry and freezing dry after freezing storage (for 1∼3 years). The pheophytin extracts, mainly 10-hydroxypheophytin a, little b, of various storage silkworm feces were analyzed by reversed-phase high-performance liquid chromatography with photodiode array and fluorescence detection. The content of those pheophytih in old silkworm for 3 years (freezing storage and freezing dried in use, or freezing dried and cold storage) was better than others. The cytotoxicity of the pheophytin extracts and ethanol extracts of various storage silkworm feces were measured using Jurkat cells originated from human leukemia, using dye uptake assay (MTT) in order to find effective photodynamic therapeutic agents. The anticancer activity of those pheophytin extracts in various storage methods showed little difference among them. But ethanol extracts of fresh freezing dried silkworm in the current year was good cytotoxic activity than those of any other silkworm feces. With regards to these results, fresh ethanol extracts of silkworm feces were better than old ones. On the other hands, the pheophytin extracts of old silkworm feces contained the highest percentage of pheophytin content and showed good cytotoxicity against cancer cells by changing the pheophytin into pheophobide in the degradative process.