• 제목/요약/키워드: food science and technology

검색결과 19,068건 처리시간 0.033초

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
    • /
    • 제47권5호
    • /
    • pp.489-494
    • /
    • 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.

Isolation and Structural Determination of Free Radical Scavenging Compounds from Korean Fermented Red Pepper Paste (Kochujang)

  • Chung, Jin-Ho;Shin, Heung-Chule;Cho, Jeong-Yong;Kang, Seong-Koo;Lee, Hyoung-Jae;Shin, Soo-Cheol;Park, Keun-Hyung;Moon, Jae-Hak
    • Food Science and Biotechnology
    • /
    • 제18권2호
    • /
    • pp.463-470
    • /
    • 2009
  • Sixteen antioxidative active compounds isolated from the EtOAc layer of MeOH extracts of kochujang, Korean fermented red pepper paste, were structurally elucidated as fumaric acid, methyl succinate, succinic acid furan-2-yl ester methyl ester (gochujangate, a novel compound), 2-hydroxy-3-phenylpropanoic acid, 3,4-dihydroxybenzoic acid, 2,3-dihydroxybenzoic acid, 2,4-dihydroxybenzoic acid, 6,7-dihydroxy-2H-chromen-2-one (esculetin), caffeic acid, cis-p-coumaric acid, trans-p-coumaric acid, daidzin, genistin, apigenin 7-O-$\beta$-D-apiofuranosyl($1{\rightarrow}2$)-$\beta$-D-glucopyranoside, apigenin 7-O-$\beta$-Dglucopyranoside, and quercetin 3-O-$\alpha$-L-rhamnopyranoside by mass spectrometry (MS) and nuclear magnetic resonance (NMR) experiments. These compounds were analyzed for the first time as antioxidants from kochujang.

감태 물 추출물의 Trypsin 저해활성에 대한 열 및 pH 안정성 (Trypsin Inhibitory Activity of Water Extracts from Ecklonia cava as Affected by Temperature and pH)

  • 정슬아;김꽃봉우리;김민지;김동현;선우찬;김현지;정다현;정희예;김태완;조영제;안동현
    • 한국식품영양과학회지
    • /
    • 제41권6호
    • /
    • pp.840-845
    • /
    • 2012
  • 본 연구는 감태 물 추출물의 일반특성과 trypsin 저해활성을 알아보고 산업적으로 이용가능성을 확인하기 위하여 열 및 pH에 대한 안정성을 실시하였다. 감태 물 추출물의 색도 및 pH를 측정한 결과, 색도는 명도가 86.21로 높고 적색도 및 황색도가 각각 0.38 및 15.49로 낮게 나타났으며 pH는 6.17로 약산성으로 나타났다. 감태 물 추출물의 trypsin 저해활성은 5, 2.5 및 1 mg/mL 농도에서 각각 76.21%, 62.41% 및 60.41%를 나타냈으며 $IC_{50}$값은 0.83 mg/mL이었다. 열 및 pH에 대한 안정성을 측정한 결과, $80^{\circ}C$까지 열처리에 안정하였고 pH 2~8 범위에서 안정하였으나 $100^{\circ}C$$121^{\circ}C$ 열처리와 pH 10에서 활성이 약간 감소하였으나 전체적으로 높은 활성을 유지하여 열 및 pH에 안정한 것을 확인하였다. 이상의 결과를 통해 감태 물 추출물이 지니는 trypsin 저해활성이 열 및 pH에 대해 안정성을 지녀 식품산업에 응용 가능할 것으로 사료된다.

HACCP 의무적용 식품 및 소규모 HACCP 제도 개선방안 (Improvement plan of HACCP mandatory application foods and small-scale HACCP System)

  • 이한철;박민지;오도경;김찬영;정은선;김채영;임지유;김중범
    • 식품과학과 산업
    • /
    • 제55권3호
    • /
    • pp.301-307
    • /
    • 2022
  • As a result of analyzing the domestic and foreign HACCP systems, advanced countries mandated HACCP system on all foods to strengthen food safety management and USA, EU and China do not apply small-scale HACCP system. Looking at the cases of food safety accidents in Korea and the non-compliance rate of HACCP certification evaluation by size, the accident rate of companies without HACCP certification was 31.2% higher than that of companies with HACCP certification. The nonconformity rate of food inspection standards was analyzed to be 89.0% higher than that of HACCP certification companies. Based on the international trend of food safety management and the frequency of food safety accidents, it is proposed to gradually expand the mandatory application of HACCP system in Korea to all foods, and to change the small-scale HACCP standard from less than 500 million Korean won or 21 employees to less than 500 million Korean won.

카라기난 첨가 수리미 혼합물의 냉장 저장 중 특성 변화 (Changes in Properties of Polysaccharide Iota Carrageenan-added Surimi Mixture During Cold Storage)

  • 한현수;우가은;김수형;박예린;강유석;박정철;서훈서;최예희;정소미;황혜지;이가혜;안동현
    • 한국수산과학회지
    • /
    • 제55권5호
    • /
    • pp.655-661
    • /
    • 2022
  • Iota carrageenan-containing surimi was refrigerated for 7 days to investigate the change in its properties. Physical properties, color differences, and sensory evaluation were tested for analysis after addition of 0-3 Wt% iota carrageenan. In unheated surimi, the 2% carrageenan- containing surimi had higher chromaticity and color difference compared to the surimi without added carrageenan. However, the surimi with 3% iota carrageenan showed enhanced yellowness, resulting in a modified color difference. Surimi containing iota carrageenan showed the same trend in color difference in heated surimi after storage for 7 days, particularly when carrageenan content was 2% or greater. The hardness, gumminess, and chewiness of the heated Iota carrageenan-containing surimi also increased after 7 days of storage. Compared to surimi without added carrageenan, the heated Iota carrageenan-containing surimi had higher hardness, gumminess, chewiness, and lower adhesiveness after storage. The overall preference for surimi decreased, while the hardness increased, when carrageenan was added. Therefore, the addition of the iota carrageenan to stored surimi can significantly enhance its hardness.