• Title/Summary/Keyword: physical ripening

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Effect of Added NaCl Levels on the Physical, Chemical and Microbial Properties of Dry Sausage during Ripening Period (숙성 및 건조기간중 소금농도에 따른 Dry Sausage의 이화학적 성상 및 미생물의 증식 특성)

  • Shin, Heuyn-Kil;Choi, Sung-Soo;Kang, Ik-Soon;Han, Suk-Hyeon
    • Korean Journal of Food Science and Technology
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    • v.20 no.6
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    • pp.755-761
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    • 1988
  • The effect of NaCI content levels(1.7, 2.2, 2.7 and 3.2%) on the ripening of a dry sausage was studied, when starter culture and Glucono-delta-Lacton were used. During the ripening of sausages, the physical and chemical properties and the microbial mutiplication were investigated, and also the growth of inoculated Staphylococcus aureus was detected, pH values were slowly decreased and Aw values dropped fastly during ripening period with the increase of NaCl content. In instrumental texture examination, the texture of sausage with NaCl content of 3.2% was significantly harder and more cohesive than those with lower NaCl contents. During ripening St. aureus was decreased by one tenth and not significantly different among mixtures with different NaCl contents. Depending upon reducing NaCl levels, total bacteria and Lactobacilli grew rapidly, while Enterobacteriaceae decreased slowly during ripening.

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The Effects of Grape Seed Flour on the Quality of Turkish Dry Fermented Sausage (Sucuk) during Ripening and Refrigerated Storage

  • Kurt, Sukru
    • Food Science of Animal Resources
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    • v.36 no.3
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    • pp.300-308
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    • 2016
  • In this study, the effects of grape seed flour on the physical-chemical properties, microbiological and sensory properties of Turkish dry fermented sausage, sucuk, was investigated. After the sausages produced with beef, beef fat, sheep tail fat and spices, they were ripened for 14 d. Then they were vacuum-packaged and stored for 80 d at 4℃. The effects of grape seed flour (GSF; 0%, 0.75%, 1.5%, 3%) on the physical-chemical properties (pH, moisture, fat, protein, free fatty acids, thiobarbituric acids, diameter reduction, ripening yield, instrumental colour), microbiological properties (total aerobic mesophilic and lactic acid bacteria, Enterobacteriaceae, mould and yeast) and sensory properties of the sausages were investigated. Grape seed flour decreased moisture, TBA, diameter reduction, instrumental colour (a, b) values and sensory analysis scores during the ripening period; it also decreased TBA, instrumental colour (L, a, b) values, total aerobic mesophilic and lactic acid bacteria counts during the storage period. It was concluded that grape seed flour has a potential application as an additive in dry fermented sausages.

The Additive Effect of Polyoxyethylene Compounds on the Photographic Characters of Photographic Emulsion

  • Youn, Min-Young;Ahn, Hong-Chan;Kang, Tai-Sung
    • Journal of Photoscience
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    • v.7 no.2
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    • pp.45-46
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    • 2000
  • The polyoxyethylene compounds were added into the photographic emulsion during the physical ripening of photo sensitive silver halide crystal in this emulsion. The polyoxyethylene compounds improved the photographic properties of the film to a great extent increasing the photo sensitivity and decreasing the fog density.

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Refinement of Low-grade Clay using Iron-reducing Bacteria [I] : Comparison of Traditional Ripening and Biotechnological Ripening (철환원세균을 이용한 저품위 점토의 개량[I] : 전통적 수비법과 생물공학적 숙성법의 비교)

  • 류희욱;조경숙;김민주;강석영;최희락
    • KSBB Journal
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    • v.15 no.2
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    • pp.201-207
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    • 2000
  • The traditional ripening method of clay was analyzed. An advanced refining method of clay using enrichment cultures of iron r reducing bacteria was developed. After the traditional ripening, the whiteness of the clay was increased due to removal of | iron impurities by inhabitant dissilmaltien with iron reducing bacteria. Other characteristics of the refined clay such as v viscosity, plasticity, and strength were also improved by iron reducing bacteria. An advanced method of clay refinement with a anaerobic enrichment cultivation of iron reducing bacteria supplemented with an extra carbon source such as glucose was s suggested. When the clay was treated by the advanced method. the refinement time could be reduced to 1/6 of that r required by the traditional method. The physical properties of the refined clay by the advanced method were better than t those of the traditionally refined clay.

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A Study on the Photographic Characteristics of Laser Scanner Film (Laser Scanner 필름의 사진특성에 관한 연구)

  • Kim, Yeoung-Chan
    • The Journal of Information Technology
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    • v.8 no.2
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    • pp.53-58
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    • 2005
  • In this study, we made experiments the preparation of silver halide microcrystals, physical ripening, chemical ripening, spectral sensitivity, additives and coating in order to develop medical laser scanner film which has photographic characteristic suitable for exposure to He-Ne and Ar laser. In the practice of sensitometry, the photographic material is exposed to a known quantity and quality of radiant energy, developed under standard conditions, and the densities resulting from the various exposures are then measured. The results are usually expressed in graphic form as curves, and from these curves numerical values are derived which are used to specify the characteristics of the material.

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A Study on the Photographic Characteristics and Crystalline Forms about Photographic Emulsion Prepared from Photographic Gelatine with Polyvinylpyrrolidone (사진용(寫眞用) 제라틴과 Polyvinylpyrrolidone으로 제조(製造)된 사진유제(寫眞乳劑)의 할로겐은(銀) 결정(結晶) 및 사진특성(寫眞特性) 연구(硏究))

  • Kang, Tai-Sung
    • Journal of radiological science and technology
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    • v.1 no.1
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    • pp.55-59
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    • 1978
  • The photographic characteristics have been studied in relation with various molecular weights of Polyvinylpyrrolidone(PVP). The shape of silver halogen crystals by physical ripening of mixture of photographic gelatine and various molecular weights of PVP were observed. Then, the photographic characteristics have been studied by chemical ripening. Results were concluded as follows: 1. All of the crystals have formed in the shape of (100) or (111). 2. Photographic characteristics were inferior by using PVP of higher molecular weight. 3. Photographic characteristics were superior by using PVP of lower molecular weight. 4. Photographic characteristic were compared with various Emulsion thickness and Tested Resolving power.

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Fragipan Formation within Closed Depressions in Southern Wisconsin, United States (미국 위스콘신 남부지방의 소규모 저습지에 나타나는 이쇄반층(Fragipan)의 형성과정에 관한 연구)

  • Park S.J.;Almond P.;McSweeney K.;Lowery B.
    • Journal of the Korean Geographical Society
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    • v.41 no.2 s.113
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    • pp.150-167
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    • 2006
  • This study was conducted to determine the pedogenesis of dense subsurface horizons (denoted either Bx or Bd) observed within closed depressions and in toeslope positions at loess-covered glacial tillplains in southern Wisconsin. Some of these dense subsurface horizons, especially those occurring within depressions, show a close morphological resemblance to fragipans elsewhere, even though the existence of fragipans has not been previously reported in southern Wisconsin. The spatial occurrence of fragipans was first examined over the landscape to characterize general soil-landscape relationships. Detailed physico-chemical and micromorphological analyses were followed to investigate the development of fragipans within a closed depression along a catenary sequence. The formation of fragipans at the study site is a result of sequential processes of physical ripening and accumulation of colloidal materials. A very coarse prismatic structure with a closely packed soil matrix was formed via physical ripening processes of loess deposited in small glacial lakes and floodplains that existed soon after the retreat of the last glacier. The physically formed dense horizons became hardened by the accumulation of colloidal materials, notably amorphous Si. The accumulation intensity of amorphous Si varies with mass balance relationships, which are governed by topography and local drainage conditions. Well-developed Bx horizons evolve at closed depressions where net accumulation of amorphous Si occurs, but the collapsed layers remain as Bd horizons at other locations where soluble Si has continuously been removed downslope or downvalley. Hydromorphic processes caused by the presence of fragipans are degrading upper parts of the prisms, resulting in the formation of an eluvial fragic horizon (Ex).

A Study on the Variation of Soil Physical Properties on the water requirement, growth, and yield in the direct Sowing culture of rice (수도직파재배에서 토양의 물리성 변화가 용수량과 생육 수량에 미치는 영향에 관한 연구)

  • 김철수;김시원
    • Water for future
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    • v.10 no.2
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    • pp.81-90
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    • 1977
  • The research is conducted to study the effect of the soil physical properties in the direct sowing culture on the water requirement, growth, and yield of rice with Early-Tongil at the experimental paddy field of the Sangju agri. and seri. junior college in Keyngbuk province from 6th May to 15th September in 1977. The experimental plots are designed with the four plots which are non-irrigated standard (plowing to 15cm), non-irrigated deep lowed (plowing to 25cm), irrigated standard (plowing to 15cm), and irrigated deep plowing plot (plowing to 25cm) and also each plot is repreated four times by the split plot design. The results obtained are summarized as follows: 1) The soil sample was ML to 10cm depth from ground surface and those from 10cm to 20cm depth and from 20cm to 30cm were CL. Each specific gravity was 2. 6, 2. 6 and 2. 7. 2) The weather during culturing period was the sane as the normal year of mean temperature. The precipitation was little and the distribution of it was disordered comparing to normal year but the heavy sunshine gave good effect on ripening. 3) Percolation loss was increased more at the non-irrigated plot than at the irrigated plot, and that of deep-plowed plot was increased more. 4) Grain yield per 10a. of non-irrigated deep plowed plot was 898kg, it was greated than others but there wa no significance. 5) A significant difference in the number of spikelets per panicle was found between nonirrigated plot and irrigated plot, and the number of spiklelets per panicle at the nonirrigated plot was more than that of the irrigated plot. But there was no significance in the other yield components-number of panicle, fertility abd ripening ratio-at the irrigated plot, ut weight of 100 grains was higher at non-irrigated plot. 6) Yield and growth at the deep plowed plot were higher than those of standard plowed plot.

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A Study on the Characteristics of a Reclaimed Marine Soils (Gupo Series) distributed on the Southern Coastal Area of Korea (우리나라 남해안(南海岸)에 분포(分布)된 간척지(干拓地) 토양(土壤)의 특성(特性)에 관(關)한 조사연구(調査硏究)(구포통(鳩浦統)에 관(關)하여))

  • Juug, Yeon-Tae;Um, Ki-Tae;Shin, Yong-Hwa
    • Korean Journal of Soil Science and Fertilizer
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    • v.9 no.2
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    • pp.99-105
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    • 1976
  • After investigation of soil characteristics the properties of a reclaimed marine soil (Gupo series) distributed along the southern coastal areas of Korea are summarized as follows: 1. Gupo soils distributed in the southern Ria coastal area are derived from rolling to hilly materials and are poorly sorted with less influences of river fluvial action. These soils have high content of sand compared with the broad fluvio-marine soils in the western coastal areas. 2. The morphological features of the poorly drained Gupo soils are greyish brown sandy loam with a few yellowish mottles in the surface horizon and are grey sandy loam with a few gravel in the sub-strata. The ground water table remains around 10-30cm below the surface. These soils, recently reclaimed younger deposits, do not show any evidence of illuviation. 3. The "n" value (about 0.8) of the Gupo soils indicates physically unripened soils. 4. pH value of these soils shows more than 8.0 throughout the profile. Organic matter contents are extremely low (around 0.5%) except 1.2 percent in the surface horizon. C.E.C. ranges from 7 to 9m.e/100g which is lower than average in the country. The ratios of extractable cations such as Ca, Mg, Na and K of the surface horizon are 20:7:4:1. Base saturation is more than 60%. Available phosphate content is very low that is less than 25 ppm. Electric conductivity of the soils at $25^{\circ}C$ ranges 7 to 12 mmhos/cm and increased with depth. 5. According to classification of soil based on physical ripening, the Gupo soils can be classified into "Unripe soils with half-ripe sub-soils". The soils could be classified into "Hydric Haplaquents" in the original of the 7th Approximation (1960), but into "Typic Haplaqents in the supplement of 7th approximation which the physical ripening condition is not clearly expressed. Soil Taxonomy, apparently the final version of the 7th approximation, defines the soils as "Haplic Hydraquents" that clearly show the condition of physical ripening as well as other properties. Other several classification systems applied do not describe physical ripening condition of the soils.

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Effect of Plant Growth Regulators on the Ripening and Quality of 'Campbell Early' Grape Fruit (Vitis laburuscana B.) (식물생장조절제(植物生長調節劑)가 포도 'Campbell Early' (Vitis labruscana B.) 품종(品種)의 과실성숙(果實成熟) 및 품질(品質)에 미치는 영향(影響))

  • Kim, Jong Hyun;Lee, Jae Change;Hwang, Yong Soo
    • Korean Journal of Agricultural Science
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    • v.18 no.1
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    • pp.1-9
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    • 1991
  • This experiment was aimed to develop possible methods to control the maturity of grape berries through the application of exogenous plant growth substances and physical treatments such as defoliation or girdling. 1. Chlormequat and paclobutrazol increased anthocyanin but did not affect soluble solids contents and maturity. Girdling enhanced maturation and solids accumulation whereas defoliation delayed maturity. Solids content of berries in defoliation treatment did not reach to the level of other treatments even when fully ripened. 2. Ripening of grapes is greatly delayed for 20 to 30 days by the application of auxins (2,4-D and fenoprop) compared to the untreated control. Uneven ripening of berries in those clusters was observed when the concentration of auxin was over 50 ppm. Thus, about 30% of berries remained green until the normal berries were overripened. 3. Gibberellin did not affect the maturity of grape berries but maturity was greatly delayed when GA was applied with auxins. Also, uneven coloration between berries was observed such as in the application of auxin alone. 4. Ethephon application combinded with calcium at veraison showed no effect on berry ripening but increased anthocaynin contents. It can be concluded that harvest time of 'Campbell Early' grapes can be effectively extended by delaying the maturity through the application of auxin.

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