• Title/Summary/Keyword: 소금

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Mass Transfer during Salting and Desalting Processes of Chinese Cabbage (배추의 염절임 및 탈염 공정중 물질이동)

  • Kim, Dong-Kwan;Kim, Myung-Hwan;Kim, Byung-Yong
    • Journal of the Korean Society of Food Science and Nutrition
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    • v.22 no.3
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    • pp.317-322
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    • 1993
  • The diffusion phenomena of water, solid and reducing sugar in Chinese cabbage during salting (5$0^{\circ}C$, 25% salt solution) and desalting (5$0^{\circ}C$, distilled water) were investigated. Water loss and solid gain during salting were rapid in the first 6hrs and then almost leveled off. After 24hrs of salting, water loss and solid gain in 100g of initial wet Chinese cabbage were 33.35g and 6.26g respectively. Moisture content was changed from 94.29% to 83.11% during 24hrs of salting. The reducing sugar concentration was also changed from 29.2 mg/$m\ell$ to 6.5mg/$m\ell$, which was linearized as a function of the square root of salting time and showing that Y=30.1841-5.0269√t. After 24hrs salting, water gain and solid loss during desalting were rapid in the first 4hrs and then increased linearly. After 12hrs of desalting, the water gain and solid loss in 100g of initial wet Chinese cabbage were 20.82g and 9.14g respectively. The amount of solid loss after 12hrs desalting was higher than that of solid gain after 24hrs salting due to the diffusion of solute presented initially in the Chinese cabbage during salting and desalting. The concentration of salt in Chinese cabbage after 12hrs desalting was 2.98% which was a suitable salt concentration for the preparation of Kimchi. At this time, the concentration of reducing sugar was only 1.6mg/$m\ell$. The linear regression equation of reducing sugar concentration during desalting was Y=6.7854-1.5992√t.

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Changes in Physicochemical and Sensory Qualities of Korean Pickled Cucumbers during Fermentation (발효 중 오이지의 물리화학적 및 관능적 품질의 변화)

  • Kim, Jong-Goon;Choi, Hee-Sook;Kim, Sang-Soon;Kim, Woo-Jung
    • Korean Journal of Food Science and Technology
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    • v.21 no.6
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    • pp.838-844
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    • 1989
  • The physicochemical and organoleptic properties of Korean pickled cucumbers were studies for their changes during fermentation. The Korean pickled cucumbers were prepared by salting in 5-15% NaCl solution and fermented for 7-10 days. The results showed that the increase of salt concentration in cucumber had a linear relationship with logarithmic value of brining time. The higher NaCl concentration in salt solution resulted a rapid salt penetration into cucumber while the rate of changes in pH, the total acidity and turbidity were reduced. The color of cucumber surface were changed from green to yellow-green color as the fermentation progressed. The hardness of cucumber decreased repidly after one day of fermentation, followed by a little decreased until it reached to pH 3.2. A little increase in pH and decrease in total acidity were measured thereafter. The evaluation of sensory quality showed that the acidic and fresh cucumber-like-flayer decreased and yeast-moldy increased as the fermentation progressed. The sensory changes were more evident for lower salt concentration of NaCl solution. The softness of cucumber became to be significant from 4th day of fermentation in 5% salt solution.

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Fermentation Characteristics of Kochujang Prepared with Various Salts (소금의 종류를 달리한 고추장의 발효 특성)

  • Kim, Dong-Han;Yang, Sung-Eun;Rhim, Jong-Whan
    • Korean Journal of Food Science and Technology
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    • v.35 no.4
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    • pp.671-679
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    • 2003
  • Effects of sun-dried, refined, seaweed, and bamboo salts on the quality of kochujang were studied by measuring enzymatic, microbial, and physicochemical characteristics of kochujang during 12 weeks of fermentation. Yeast count was low in the bamboo-salt kochujang, whereas that of aerobic bacteria was low in the seaweed-salt kochujang. Acid protease activity was high in the bamboo-salt kochujang, whereas amylase activity did not show any remarkable difference. Color change was lowest in the bamboo-salt kochujang. Water activities of all kochujangs decreased during fermentation with the lowest shown in the refined-salt kochujang. Consistency of seaweed-salt kochujang was the highest. Total sugar content was higher, whereas ORP was lower in the seaweed- and bamboo-salt kochujangs. Titratable acidity changed slightly in the bamboo-salt kochujang. Reducing sugar content was the lowest, whereas ethanol content was the highest in the refined-salt kochujang. Amino and ammonia nitrogen contents of kochujangs increased up to the middle of fermentation period then decreased with lower changes observed in the sun-dried and refined-salt kochujangs. Results of sensory evaluation indicated that the bamboo-salt kochujang was more acceptable than the sun-dried salt kochujang in taste, color, and overall acceptabilities.

Scientific Study for the Standardization of the Preparation Methods for Kyongdan(IV) -for the focus on the volume of water and volume of slat- (경단 조리법의 표준화를 위한 조리과학적 연구 (IV) -첨가하는 물의 양과 소금의 양을 중심으로-)

  • 한경선;김기숙
    • Korean journal of food and cookery science
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    • v.10 no.1
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    • pp.71-75
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    • 1994
  • This study attempted to examine the effect on sensory characteristics and texture of Kyongdan in various volume of adding water and volume of adding salt the most favorite tendency on the guality was at the 25% adding water and 1∼1.5% adding salt. Evaluation was conducted through sensory evaluation and objective evaluation The results were summarized as follows. 1. In sensory evaluation on various volume of water and volume adding salt the most favorite tendency on the gualtity was at the 25vo adding water and 1∼1.5% adding salt. 2. This condition corresponded to the low level of hardness, adhesiveness, gumminess, chewiness and high level of springiness in compa-rison with Instron measurement. In summary the most favorite factor is 12 hours soaking time, 25% adding water (hot water), 1∼1.5% adding salt, over 50 times kneading.

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Effect of Sodium Malate Buffer as pH Adjuster on the Fermentation of Kimchi (pH조정제 Sodium Malate Buffer의 첨가가 김치의 숙성에 미치는 효과)

  • Kim, Soon-Dong;Lee, Shin-Ho
    • Journal of the Korean Society of Food Science and Nutrition
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    • v.17 no.4
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    • pp.358-364
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    • 1988
  • The effect of sodium malate buffer(SMB) on the fermentation of Kimchi was investigated. Chemical and microbial changes were investigated during fermentation of Kimchi containing 0,2,4 and 6% salt at $25^{\circ}C$. The fermentaton of lower salted Kimchi was taster than that of higher salted Kimchi. One percent addition of SMB, as pH adjuster, showed the retardation of Kimchi fermentation about 36 hours at $25^{\circ}C$. Due to the buffer action of SMB, the acidity was inclosed during the fermentation as concentration of SMB increased. The buffer action of SMB was increased during fermentation of Kimchi.

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Heavy Metal Contents and Safety Evaluation of Commercial Salts in Seoul (서울시 유통 소금의 중금속 함량 및 안전성 평가)

  • Kim, Ae-Kyung;Cho, Sung-Ja;Kwak, Jae-Eun;Kum, Jin-Young;Kim, Il-Young;Kim, Jung-Hun;Chae, Young-Zoo
    • Journal of the Korean Society of Food Science and Nutrition
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    • v.41 no.1
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    • pp.129-135
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    • 2012
  • This study was to investigate the heavy metal content of 55 commercial salts in the Seoul area. There were 22 types of solar sea salt, 17 types of processed salt and 16 types of reworked salt. Looked at another way, there were 22 types of domestic salt and 33 types of salt imported from France, the U.S., Japan, Australia, New Zealand, and Argentina. The samples were measured using both a mercury analyzer and an Inductively-Coupled Plasma Optical Emission Spectrometer (ICP-OES). The average heavy metal contents for commercial salts were Pb $0.281{\pm}0.344$, Cd $0.035{\pm}0.221$, Cr $0.364{\pm}0.635$, Cu $0.182{\pm}0.313$, As $0.046{\pm}0.062$, Ni $0.155{\pm}0.247$, Al $5.753{\pm}10.746$, Co $0.028{\pm}0.211$ and Hg $0.001{\pm}0.001$ mg/kg. The leads were detected highly in solar sea salt rather than in processed salt or reworked salt. Also chrome, arsenic and nickel were found more in processed salt. There were large differences in aluminum content between imported solar sea salt and processed salt. Aluminum was highly detected in French products, showing that salt can be affected by regional differences. The weekly average intakes of Pb, Cd, Cr, Cu, and Hg from commercial salt were 1.652% (0.000~6.754), 0.372% (0.000~7.214), 3.177% (0.000~26.279), 0.008% (0.001~0.049), and 0.031% (0.000~0.094) respectively compared with Provisional Tolerable Weekly Intakes established by the Joint FAO/WHO Expert Committee for the evaluation of food safety. The content of heavy metals from commercial salts was determined to be at safe levels.

Effects of pH Adjustment and Sodium Chloride Addition on Quality Characteristics of Surimi Using Pork Leg (pH 조절 및 소금 첨가가 돼지 뒷다리부위를 이용한 수리미의 품질특성에 미치는 영향)

  • Jin, Sang-Keun;Kim, Il-Suk;Chung, Hyun-Jung;Cho, Ju-Hyun;Choi, Yeung-Joon;Lee, Jae-Ryong
    • Food Science of Animal Resources
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    • v.27 no.1
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    • pp.35-41
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    • 2007
  • This study was conducted to determine the effect of pH adjustment and addition of sodium chloride (NaCl) on quality characteristics of pork leg surimi. The pork leg surimi was manufactured with one of following pH 3.0 or pH 11.0 adjustment and contained 2% NaCl or not; C (Alaska pollack surimi, two times washing, 0% NaCl), T1 (pork leg surimi pH 3.0 adjustment, 0% NaCl), T2 (pork leg surimi, pH 3.0 adjustment, 2% NaCl), T3 (pork leg surimi, pH 11.0 adjustment 0% NaCl), T4 (pork leg surimi, pH 11.0 adjustment, 2% NaCl). The $L^*$ and W values was increased with increasing of pH value, but the $a^*$ and $b^*$ values lower. The W values were higher (p<0.05) as addition of NaCl, but $a^*$ and $b^*$ values were lower. In textural properties, the cohesiveness was increased with increasing of pH value, however with the exception of springiness all traits were higher (p<0.05) as addition of NaCl. The breaking force and gel strength was increased with increasing of pH value. The breaking force, gel strength and breaking force u deformation were higher as addition of NaCl, but shear force lower. In sensory evaluation, the tenderness was increased with increasing of pH value and all traits of sensory evaluation also were higher (p<0.05) as addition of NaCl. There were no differences in interaction of pH adjustment and without or with NaCl on color, textural properties, breaking force, deformation, gel strength, shear force and sensory evaluation of pork leg surimi. The color, textural and physical characteristics and sensory evaluation ot T2 and T4 were similar to treatment C. Therefore, the pH 11.0 and 2% NaCl addition on process of manufacture of pork leg surimi would be recommended.

천일염(국산ㆍ중국산)과 정제염으로 담근 새우젓의 이화학적 특성

  • 김미리;오상희
    • Proceedings of the EASDL Conference
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    • 2003.04a
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    • pp.86-86
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    • 2003
  • 우리나라의 대표적인 염장식품인 새우젓은 새우와 소금만을 원료로 하여 제조하는데, 전통적으로 새우젓 제조시에는 천일염을 사용해 왔으나, 최근 수입산 소금의 유입이 급증하고있다. 따라서 본 연구에서는 소금의 종류가 새우젓 숙성발효에 미치는 영향을 알아보기 위해, 천일염(국산, 중국산)과 정제염으로 재래식방법인 염도 27% 새우젓을 제조한 후 2$0^{\circ}C$ 항온기에서 180일간 숙성 및 발효가 진행되는 동안 이화학적 특성을 분석하였다.(중략)

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Effects of Salt and Fermented Anchovy Extract on the Somatic Mutagenicity in Drosophila Wing Spot Test System (소금 및 멸치적갈이 Drosophila 돌연변이유발에 미치는 영향)

  • 이현주;정근옥;전승희;박건영;이원호
    • Journal of the Korean Society of Food Science and Nutrition
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    • v.29 no.6
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    • pp.1139-1144
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    • 2000
  • In vivo Drosophilla 돌연변이 검출계에서 발생 단계상의 독성효과가 없는 범위에서 소금 및 젓갈을 단독 처리했을 때 모든 시료가 자연발생 빈도가 유사하게 나타났다. MNNG의 체세포 돌연변이 유발에 미치는 영향을 살펴본 결과 생멸치, 6개월간 속성된 멸치 12개월된 멸치액젓은 항돌연변이효과를 보였고, 발효하지 않은 소금에 절인 멸치는 small muh spots 와 large mwh spots 의 출현빈도에 대해 모두 보돌연변이 효과를 보였다. 따라서 멸치 젓갈 제조시 멸치에 소금이 첨가되어 (생젓갈) 돌연변이 유발이 일어날 가능성이 있지만 숙성기간이 길어지면 (12개월, 익은 젓갈) 오히려 항돌연변이효과가 있는 것으로 나타났다.

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