• Title/Summary/Keyword: 식품안정성

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Study on the Stability and Fate of Vicine and Convicine in Fababean (Fababean 중의 Vicine과 Convicine의 안정성에 관한 연구)

  • 박신인
    • Journal of Food Hygiene and Safety
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    • v.8 no.2
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    • pp.85-90
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    • 1993
  • The aglycones of vicine and convicine have been implicated as the causative factors for favism in fababeans. Thus, the presence of these compounds in fababeans is a potential obstacle to the use of fababeans and fababean preparations in foods. Investigations of vicine stability in fababeans and in pure solutions revealed that vicine is very stable, however, divicine derived from vicine by ${\beta}-gIucosidase$ action or by acid hydrolysis is highly unstable at conditions prevalent in food processing. Therefore, the possibility of incorporating of ${\beta}-gIucosidase$ in food products containing fababean preparations was suggested to overcome potential risks of favism related to the consumption of fababean fortified products.

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Gas Chromatographic Determination of Flavor Stability of Cooking Oils (가스크로마토그래피에 의한 식용유의 향미 안정성 측정)

  • Kim, In-Hwan;Yoon, Suk-Hoo
    • Korean Journal of Food Science and Technology
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    • v.20 no.5
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    • pp.732-735
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    • 1988
  • Flavor stability of cooking oils such as rice bran oil, double fractionated palm olefin and soybean oil were determined by headspace analysis using gas chromatography. In the headspace, the contents of volatile compounds, oxygen and hydrogen were measured. The hydrogen content in the headspace correlated well with the contents of volatile compound (r > 0.95). Therefore, it is proposed that a single measurement of hydrogen and oxygen is used as a index of flavor stability of cooking oils instead of separate measurement of volatile compounds and oxygen. which have conventionally been used.

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Convenient Method for the Determination of Foaming Properties of Egg White and Its Verification (난백 거품형성능력 및 안정성 평가를 위한 간편 측정방법과 실용성 검증)

  • Kim, Mi-Ra;Imm, Jee-Young
    • Korean Journal of Food Science and Technology
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    • v.36 no.5
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    • pp.728-732
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    • 2004
  • Convenient method for determination of egg white foaming properties was suggested. Highly reproducible results were obtained when 70g egg white was whipped at 1,200 rpm for 2 min. Using standardized testing method, foaming capacity and stability of egg white samples including fresh egg white, freeze-dried egg white and commercial egg white powder were effectively differentiated. Foaming capacity of egg white was not affected during storage of fresh egg white up to 4 weeks at $4^{\circ}C$, whereas foaming stability significantly decreased after 2 weeks of storage.

Technical Trend of Food Information System (식품정보 시스템 기술동향)

  • Kwon, Dae-Young;Kim, Young-Ok
    • Proceedings of the Korea Contents Association Conference
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    • 2011.05a
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    • pp.295-296
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    • 2011
  • 식품정보 시스템은 농식품 정보를 DB화하여 분류하고, 다양한 식품정보를 효율적으로 관리하여 식품정보 활용에 대한 효과성을 극대화한 시스템이다. 미국, 일본, EU 에서는 정부 주관부처가 식품정보를 포괄적으로 관리하고 있으며, IT기술(데이터베이스, 메타데이터, 웹 기술, 통합검색 기술 등)을 활용하여 대국민, 산업체, 연구기관 등에 올바른 식품정보를 제공하고 있다. 본 논문은 국내 외 식품정보 시스템에서 활용하고 있는 식품정보와 IT기술에 대한 동향을 분석하여 식품정보를 여러 산업분야에서 손쉽게 활용할 수 있는 방안을 제시하고자 하였고, 이를 통해 식품 안정성, 기능성, 품질정보 등 식품정보를 언제, 어디서나 활용하여 식품산업에 대한 에코 시스템을 구축하는 것이다.

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Stability of Betanine Extracted from Opuntia ficus-indica var. Sabolen (선인장 붉은 열매에서 추출한 Betanine색소의 안정성)

  • 정미숙;김경희
    • Korean journal of food and cookery science
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    • v.12 no.4
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    • pp.506-510
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    • 1996
  • The stability of prickly pear color as affected by pH, metal ions, sugar and acids was studied. The color of prickly pear was most stable at pH 4 and 5. Metal ions (Fe, Cu) at a level of 100 ppm caused a decrease in stability compared to that of the control, whereas pigment of prickly pear was stable at 100 ppm of Sn ion And the color of prickly pear was stable at 0.15 M fructose. Both 100 and 500 ppm ascorbic acid had the greatest effect on stability, while citric acid, phosphoric acid and tartaric acid had no effect on stability compared to that of the control. Based on the data presented, it was concluded that under selected conditions prickly pear pigment should find application as natural food colorants.

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Effect of pH, Chemical Composition and Additives on Stability of Soymilk Suspension (pH, 화학적 조성 및 첨가제가 두유(豆乳)의 현탁안정성에 미치는 영향)

  • Kim, Eun-Soo;Chung, Seong-Soo;Jo, Jae-Sun
    • Korean Journal of Food Science and Technology
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    • v.22 no.3
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    • pp.319-324
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    • 1990
  • The effects of pH, protein and fat content, addition of emulsifiers, stabilizer, sugar, salt and calcium salt on the stability of soymilk suspension were investigated by analyzing the cream separated and precipitates of soymilk which is prepared by various conditions. In the alkaline region of pH, soymilk showed a good stability of the suspension and particularly, above pH 10, precipitates were not formed. When 1.5% of palm oil with 0.4% of glycerine monostearate was added to soymilk in the hydrophile-lipophile balance (HLB) value of 4 to 7, resulted maximal emulsion stability occured below H LB 6. The stability was decreased with increasing the fat concentration and soy oil showed better emulsion stability than that of palm oil. Among the commercial stabilizers, 0.03% of carrageenan was most effective. The stability was not decreased by addition of sugar up to 3% while it was decreased by addition of sodium salt and calcium salt at low level.

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Functional Properties of Egg Shell Membrane Hydrolysate as a Food Material (난각막 분해물의 식품 소재로서 기능적 특성)

  • 전태욱;박기문
    • Food Science of Animal Resources
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    • v.22 no.3
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    • pp.267-273
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    • 2002
  • The functional properties of egg shell membrane hydrolysate by Bacillus licheniformis(EESMH) and NaOH-ethanol(AESMH) as a food material were investigated.. The yield of egg shell membrane hydrolysate was about 15% by Bacillus licheniformis, whereas that was 70% by NaOH-ethanol. Histidine content was higher in EESMH (18.69%) than in AESMH (2.56%). Both EESMH and AESMH showed high protein solubility (>95%). Emulsi-fying activity and stability of EESMH were higher than those of AESMH. foaming capacity and stability of AESMH were 2 times higher than those of EESMH in the pH ranges from 2 to 12. The AESMH had antioxidative activity whereas EESMH had not. Therefore, both AESMH and EESMH can be used for industrial food materials from the results of functional properties.

Comparison of Consumption of Processed Food and Personality of Middle School Students on Nutrition Education (영양교육이 중학생들의 가공식품 섭취 및 인성특성에 미치는 영향 비교)

  • Lee, Kyung-Ock;Cho, Eun Ju
    • Journal of the Korean Society of Food Science and Nutrition
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    • v.42 no.10
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    • pp.1600-1607
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    • 2013
  • The aim of this study was to investigate effect of nutrition education methodology on consumption of processed food and personality of middle school students aged 14 to 16 years who live in Busan. We categorized questionnaire based on students' consumption of processed food and personality characteristics. Based on the above, we determined serum mineral level to validate the correlation between personal characteristics and quantifiable serum mineral level. Following adoption of a proper nutrient education methodology, we found that consumption of processed foods such as meat and meat products, frozen food, noodles, bread and snacks, and drink was significantly reduced. In addition, there were distinct changes in personality characteristics such as stability, governmentality, sociality, and responsibility that became markedly increased, whereas impulsiveness decreased. We found that these distinct nutrition- education-based changes were statistically significant, when compared before and after providing proper nutrition education. We interpret these results as group with low stability showed a high consumption of meat and meat products, noodles, bread and snacks, and drink, whereas group with high stability showed a high consumption of milk and dairy products. Similarly, we also found that group with low impulsiveness showed a high consumption of canned foods, whereas group with high impulsiveness showed a high consumption of meat and meat products, frozen food, noodles, bread and snacks. Our results indicated that serum Na after nutrition education decreased, whereas other minerals including Ca, Fe, Zn, Mg and K increased, when compared with before nutrition education procedure. This study suggests that nutrition education methodology and establishment of proper dietary educational programs keeping in view balanced dietary habits for middle school students would not only appear to make them get along with healthy dietary habits, but also change their personality characteristics.

Studies on the Thermostability of Myofibrillar Proteins of Mollusca (연체류의 근원섬유단백질에 열 안정성에 관한 연구)

  • 신완철;송재철;김영호
    • The Korean Journal of Food And Nutrition
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    • v.10 no.2
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    • pp.160-165
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    • 1997
  • The actomyosin and myosin of the squid at 3$0^{\circ}C$ showed the highest Vmax and the actomyosin and myosin of the clam at 35$^{\circ}C$ and HMM at $25^{\circ}C$ showed the highest Vmax the thermostability of myofibrillar proteins is changed greatly according to the difference of KCI concentration. The myofibrillar proteins of the clam showed a higher thermostability than the myofibrillar proteins of the squid. When 3% ethanol solution was added and heated myofibrillar proteins, denaturation was accelerated and it was shown that there was a difference between animals in the denaturation velocity.

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