• Title/Summary/Keyword: 농축

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Effect of Extract or Crude Enzyme Extracted from the Fruit of Paper Mulberry (Broussonetia kazinoki Siebold) on Tenderness and Palatability of Jangchorim (닥나무 열매(緖寶子)의 농축액과 조효소가 장조림의 맛과 연화에 미치는 영향)

  • 윤숙자;장명숙
    • Korean journal of food and cookery science
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    • v.13 no.5
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    • pp.617-622
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    • 1997
  • The purpose of this study was to investigate the effect of the addition of the extract (0, 2, 4, 6, 8%) and crude enzyme (0, 0.05, 0.1, 0.5, 1%) extracted from the fruits of paper mulberry (Broussonetia kazinoki Siebold) on the tenderness and palatability of Jangchorim. Addition of up to 8% of the extract diminished the shear force by 4.8∼27%, while the addition of up to 1% of the crude enzyme begot 7.8∼34.2% decrease. Also, as the addition of the fruits of paper mulberry increased, the cooking loss was somewhat decreased, an the redness of cooked beef surface and free amino acid content in the liquid part of Jangchorim were generally increased. The contents of the mineral were in the order of Na, K, P, Ca, and Mg when crude enzyme was added. In sensory evaluation, the 4% crude extract from the fruit of paper mulberry and 0.1% addition in its crude enzyme showed the most favorable response.

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The Effect of Protein Extraction pH on the Components of Sesame Protein Concentrates (단백질 추출 pH가 참깨 농축단백질의 성분에 미치는 영향)

  • 박정륭;김은정
    • Journal of the Korean Society of Food Science and Nutrition
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    • v.24 no.4
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    • pp.613-618
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    • 1995
  • This study was carried out to investigate the effect of extracting pH on the components and color of seasame protein concentrate(SPC). The protein contents of SPC by extracted at pH 2.0, 7.0, 9.0 and 11.0 were 60.57, 67.72, 79.50 and 83.44%, respectively. Most of the phytates were removed in SPC extracted at pH 7.0, 9.0 and 11.0, but the phytate content of SPC extracted at pH 2.0 was about the same as that of defatted sesame flour. The highest decrease of phytate was found in SPC extracted at pH 11.0(94.80%). SPC extracted at pH 2.0 contained the highest amount of Ca, Mg, Fe and Zn than those in other SPC prepared, while highest amount of Cu was found in SPC extracted at pH 11.0. Sodium content was similar among all the SPC prepared. SPC extracted at pH 7.0 resulted in brighter clor, but SPC extracted at pH 11.0 showed a little darker in appearance.

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Radioactive Waste Issues Related to Production of Fission-based 99Mo by using Low Enriched Uranium (LEU) (저농축 우라늄을 사용하는 핵분열 몰리브덴-99 생산에 관련된 방사성 폐기물 연구)

  • Hassan, Muhmood ul;Ryu, Ho Jin
    • Journal of Nuclear Fuel Cycle and Waste Technology(JNFCWT)
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    • v.13 no.2
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    • pp.155-161
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    • 2015
  • Technetium-99m (99mTc) is an important, short-lived decay product of molybdenum-99 (99Mo), and it is considered the backbone of the modern nuclear diagnostic procedures. Since fission of 235U is the main source of production of 99Mo, either highly-enriched uranium (HEU) targets or low-enriched uranium (LEU) targets are irradiated in the research reactors. The use of LEU targets is being promoted by the international community to avoid the proliferation issues linked with the use of HEU. In order to define the waste management strategy at the planning stage of establishment of an LEU based 99Mo production facility, the impact of the use of LEU targets on the radioactive waste stream of the 99Mo production facility was analyzed. Because the volume of uranium waste is estimated to increase six times, the use of high uranium density targets and the utilization of hot isostatic pressing were recommended to reduce the increased waste volume from the use of LEU based targets.

Antimicrobial Activities of Maesil(Prunus mume) Extract (매실농축액의 항균성 검색)

  • Choi Moo Young;Won Hyang Rye;Park Hee Juhn
    • The Korean Journal of Community Living Science
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    • v.15 no.4
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    • pp.61-66
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    • 2004
  • To develop natural food preservatives with Maesil (prunus mume), investigation of antimicrobial activities against food-related bacteria and yeast was conducted. Maesil (prunu mume) extract exhibited growth-inhibiting activities for most of the microorganisms tested. Minimum inhibitory concentrations (MIC) of maesil extract for Staphylococcus aureus and Bacillus subtilis were as low as 0.1mg/ml. The antimicrobial activity of the maesil (prunu mume) extract was reduced by heating or alkali treatment. Moreover, growth of Staphylococcus aureus was completely inhibited within 24 hours by the addition of at least 100 ppm of maesil extract. These findings suggest that maesil extract may play a role in the development of natural food preservatives.

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Effect of Several Cereal Extracts on Enzymatic Browning (수종 곡류추출물의 효소적갈변 억제효과)

  • 이귀주;안선정
    • Korean journal of food and cookery science
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    • v.13 no.4
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    • pp.390-395
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    • 1997
  • The inhibitory effects of cereal extracts and concentrates from barley, waxy rice flours and malt on enzymatic browning were measured using apple polyphenol oxidase (PPO). Malt concentrate showed the largest inhibitory effect on PPO among all. The relationship between the properties of malt concentrate such as browning intensity and reducing power and their inhibitory effect on PPO was also studied. As the heating time increased, the browning intensity and the reducing power of malt concentrates were increased, while PPO activities were decreased. Inhibitory effect of malt concentrates on PPO increased with heating time and their concentration. L-value and compression force of the apple slices dipped in malt concentrate decreased by 6.9% and 14.3%, respectively, showing the smallest changes compared with raw and water-dipped apple slices during cold storage for 9 days. These results suggest that malt concentrate can be a potential source for the control of enzymatic browning.

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