• 제목/요약/키워드: Food Science

검색결과 45,083건 처리시간 0.058초

상백피, 곰피 및 강황 추출물 첨가에 의한 카스텔라의 저장성 및 품질증진 효과 (Effect of Morus alba Root Bark, Ecklonia stolonifera, and Curcuma aromatica Extracts on Shelf-life and Quality of Castella)

  • 윤소영;최정수;이소영;김꽃봉우리;송유진;김서진;이소정;이청조;김태완;안동현
    • 한국식품영양과학회지
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    • 제38권10호
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    • pp.1444-1451
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    • 2009
  • 상백피, 곰피 및 강황 혼합 추출물 첨가가 카스텔라의 저장성과 품질에 미치는 영향에 대해서 알아보았다. 15일간 저장하여 일반세균수와 곰팡이수를 측정한 결과 저장기간 전반에 걸쳐 무처리구에 비하여 첨가구의 미생물 생육이 억제되었으며, 첨가구의 산화보호지수가 높아 산화방지에도 효과가 있음을 알 수 있었다. 색도의 경우 무처리구에 비하여 첨가구의 명도와 적색도는 감소하였으며, 황색도는 증가하였다. 관능평가에서는 모든 항목에서 상백피 0.25%, 곰피 0.25% 및 강황 0.125% 첨가구가 가장 높은 점수를 받았으나 상백피 0.75%, 곰피 0.75% 및 강황 0.5% 처리구가 가장 낮은 점수를 받았다. 이상의 결과를 종합해 볼 때 상백피, 곰피 및 강황 혼합 추출물을 각각 0.25%, 0.25% 및 0.125%의 농도로 첨가할 경우 카스텔라의 저장성, 품질 증진 및 관능 개선 효과가 있을 것으로 사료된다.

Physical, Chemical Properties and Structural Changes of Zaodan Pickled by Vacuum Decompression Technology

  • Sun, Naxin;Liu, Huiping;Zhang, Xiaowei;Wang, Hongni;Liu, Shaojuan;Chen, Pei;Yu, Weijie;Liu, Kai
    • 한국축산식품학회지
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    • 제38권2호
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    • pp.291-301
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    • 2018
  • To shorten the production cycle of Zaodan, this study first pickled Zaodan by a novel technology - vacuum decompression technology. Vacuum decompression technology could reduce the pickling time of Zaodan from 20 wk to about 9 wk. The protein content, moisture and pH of the Zaodan egg white gradually decreased with a concomitant increase in salt during the pickling process. The total sulfhydryl group (SH) group content of the egg white proteins was increased to $2.43{\times}10^{-3}mol/L$ after being pickled for 30 d, whereas the content of disulphide bonds (SS) was reduced to $23.35{\times}10^{-3}mol/L$. The surface hydrophobicity was lowest after pickling for 30 d. In addition, great changes occurred in the secondary structure of the egg white proteins after pickling for 20 d. The disappearance of ovomucin was noticeable based on sodium dodecyl sulfate-polyacrylamide gel electrophoresis analysis.

전자선 조사가 포장방법에 따른 건미역(Undaria pinnatifida)의 미생물학적 안전성 및 품질변화에 미치는 영향 (Effect of Packaging and Electron Beam Irradiation on the Microbial Safety and Quality of Dried Undaria pinnatifida)

  • 박시우;김꽃봉우리;김민지;강보경;박원민;김보람;안나경;최연욱;이주운;김재훈;변명우;안동현
    • 한국수산과학회지
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    • 제47권5호
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    • pp.489-494
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    • 2014
  • This study determined the effect of packaging and electron beam irradiation on the quality of dried Undaria pinnatifida. Samples were air or vacuum packaged and irradiated at 7 kGy. The dried Undaria pinnatifida had total viable cells and coliform counts of 5.51 and 4.40 log CFU/g in total, respectively, and counts of 5.56 and 4.19 log CFU/g in surface. These counts were reduced by 2-4 log cycles after irradiation. Irradiation increased the lightness and yellowness of the dried Undaria pinnatifida, but not the redness. In the sensory evaluation, there were no significant differences among samples. Therefore, electron beam irradiation improves the microbial safety and quality of dried Undaria pinnatifida.

RAW 264.7 세포에서의 미역(Undaria pinnatifida) 뿌리 에탄올 추출물의 항염증활성 (Anti-inflammatory Activity of Ethanol Extract of Undaria pinnatifida Root in RAW 264.7 Cells)

  • 강보경;안나경;최연욱;김민지;박시우;박원민;김보람;김꽃봉우리;안동현
    • 한국수산과학회지
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    • 제47권6호
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    • pp.751-756
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    • 2014
  • The anti-inflammatory effects of the ethanol extract of Undaria pinnatifida root (UPREE) were investigated using the lipopolysaccharide (LPS)-induced inflammatory response in RAW 264.7 cells by measuring the production of nitric oxide (NO), interleukin (IL)-6, tumor necrosis factor (TNF)-${\alpha}$, and IL-$1{\beta}$, and cell proliferation. We found that NO levels were reduced by 34% at $100{\mu}g/mL$. Moreover, the production of IL-6 and TNF-${\alpha}$ was suppressed by the UPREE treatment. In particular, the IL-6 production was inhibited by more than 30% at $100{\mu}g/mL$ UPREE. The proliferation of RAW 264.7 cells was measured by MTT assay, and we found no cytotoxicity in those cells treated with UPREE compared to the control. Our results suggest that UPREE shows promise as a therapeutic anti-inflammatory treatment.

인공정화에 의한 참굴(Crassostrea gigas)의 유통기한 연장 (Shelf-life Extension of Raw Oyster Crassostrea gigas by Depuration Process)

  • 이도하;강동민;박슬기;정민철;강민균;조두민;이재화;이다은;심윤아;정금재;조경진;김영목
    • 한국수산과학회지
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    • 제53권6호
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    • pp.842-850
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    • 2020
  • The objective of this study was to evaluate the effect of the depuration process (artificial seawater sterilization using UV light) for extending the shelf life of raw oyster Crassostrea gigas and maintaining food quality. To confirm the effects of depuration, microbiological (viable cell count) and several physiochemical analyses (pH and glycogen levels in shucked oyster and pH, soluble protein, and turbidity in filling water) were carried out during the storage of raw oysters. The results showed that depuration could effectively extend the shelf life (2-3 days) of raw oysters with minimal change in food quality, including pH and glycogen content. Thus, the depuration process proposed in this study could successfully be applied to processing practices for other shellfish to extend their shelf life and contribute to the management of seafood safety issues.