• Title/Summary/Keyword: Food utilization

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Effect of Iron Intakes on Macromineral Utilization in Rats (철분 공급수준이 흰쥐의 다량무기질 이용에 미치는 영향)

  • 전예숙
    • Journal of the Korean Society of Food Science and Nutrition
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    • v.27 no.6
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    • pp.1273-1278
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    • 1998
  • The purpose of this study was to investigate effect of iron intakes on utilization of macrominerals (Ca, Mg, Na, K) in rats fed adequate, 2 fold, 4 fold iron for 12 weeks. There were no differences in feed intake, body weight gain, serum and liver levels of macrominerals across iron groups. Ca level in kidney of 4 fold iron group was significantly higher than those in other groups. Excretions of Mg through feces and Ca, Mg, Na, and K through urine were significantly increased with increment of iron intake. In the case of macromineral balances, daily retentions of Mg, Na, and K in adequate iron group were higher than those in 2 /4 fold iron groups. However there was no difference in Ca retention across iron groups. Therefore, it should be considered interaction with macromineral in iron supplementation.

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Improvement of Kimchi Juice Fermentation by Combined method for Chinese Cabbage Waste Utilization (폐기물 활용을 위한 종합적 처리방법의 김치쥬스 발효 향상)

  • 전윤기;윤석권;김우정
    • Journal of the Korean Society of Food Science and Nutrition
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    • v.26 no.5
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    • pp.794-799
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    • 1997
  • The effective fermentation methods of Kimchi juice for utilization of outer layer of Chinese cabbage, an waste of Kimchi industry were studied. The Kimchi juice prepared with brining and grinding the waste of Chinese cabbage and addition of spices was fermented at $25^{\circ}C$. Addition of 5$^{\circ}C$15% fermented Kimchi juice of pH 5.4 at initial stage and pH 4.4 at middle state resulted in a significant increase in fermentation rate and solid content after 12 hours of fermentation. The combined method of enzymatic hydrolysis(0.1% viscozyme) of the brined and ground cabbage and addition of 2.0% NaCl, 1.0% sucrose and 10% fermented juice of pH 5.4 first and 4.4 during fermentation, respectively resulted in more rapid fermentation. The solid concentration was 5 times higher than control at maximum point and acidic and total flavor intensity were also significantly high.

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Effects of Iron and Selenium Intakes on Utilization of Manganese in Rats (철분과 셀레늄의 섭취수준이 흰쥐의 망간 이용에 미치는 영향)

  • Jun, Ye-Sook;Choi, Mi-Kyeong
    • Journal of the East Asian Society of Dietary Life
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    • v.7 no.2
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    • pp.143-151
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    • 1997
  • The purpose of this study was to investigate the effect of iron and selenium intakes on utilization of manganese in rats fed adequate, 2-fold, 4-fold iron and adequate, high selenium for 6 weeks. There was no difference feed intake across iron and selenium containing diet groups. Body weight gain in 2-fold iron and high selenium group(MFeHSe) was significantly higher than those in other groups. Serum iron level was increased with iron increment, and liver iron content was decreased with selenium supplementation. Selenium and manganese contents in tissues were decreased with iron increment. In the case of manganese balance, manganese excretion through feces was significantly increased as iron intake was increased. However, retention and apparent absorption of manganese were not significantly affected by dietary iron. From these results, it could be suggested that the supplementations of iron and selenium affected the manganese utilization. Therefore, it must be considered interaction with various minerals in micro-nutrient supplementations.

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Ca,Mg and Zn Utilization in Rats with Different Ages (연령이 다른 흰쥐에 있어 Ca, Mg, Zn 이용에 관한 연구)

  • 최미경;승정자
    • Journal of the Korean Society of Food Science and Nutrition
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    • v.27 no.5
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    • pp.928-934
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    • 1998
  • The purpose of this study was to investigate differences of Ca, Mg and Zn utilization in young and adult rats fed standard diet for 3 weeks. Feed intake and body weight gain in young rats were significantly higher than in adult. There were no significant differences in serum levels of Ca and Zn across age and sex. In liver of young or male groups, Ca and Zn contents were significantly higher than in adult or female. There were no significant differences in tibia contents of Ca and Mg, but Zn content was increased when young or female groups was compared with the other groups. In mineral balances, daily intakes and retentions of Ca, Mg and Zn in young or male groups were significantly higher than those in adult or female. According to this results, it could be suggested that in growth period must be increased dietary intake of Ca, Mg and Zn to compromise the requirement for growth.

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Impact of Lactic Acid and Hydrogen Ion on the Simultaneous Fermentation of Glucose and Xylose by the Carbon Catabolite Derepressed Lactobacillus brevis ATCC 14869

  • Jeong, Kyung Hun;Israr, Beenish;Shoemaker, Sharon P.;Mills, David A.;Kim, Jaehan
    • Journal of Microbiology and Biotechnology
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    • v.26 no.7
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    • pp.1182-1189
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    • 2016
  • Lactobacillus brevis ATCC 14869 exhibited a carbon catabolite derepressed phenotype that has ability to consume fermentable sugars simultaneously with glucose. To evaluate this unusual phenotype under harsh conditions during fermentation, the effects of lactic acid and hydrogen ion concentrations on L. brevis ATCC 14869 were examined. Kinetic equations describing the relationship between specific cell growth rate and lactic acid or hydrogen ion concentration were deduced empirically. The change of substrate utilization and product formation according to lactic acid and hydrogen ion concentration in the media were quantitatively described. Although the simultaneous utilization has been observed regardless of hydrogen ion or lactic acid concentration, the preference of substrates and the formation of two-carbon products were changed significantly. In particular, acetic acid present in the medium as sodium acetate was consumed by L. brevis ATCC 14869 under extreme pH of both acid and alkaline conditions.

Aronia melanocarpa reduced adiposity via enhanced lipolysis in high-fat diet-induced obese mice

  • Kim, Hyun Kyung;Jung, Jiyeon;Kang, Eun Young;Gang, Gyoungok;Kim, Wooki;Go, Gwang-woong
    • Korean Journal of Food Science and Technology
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    • v.52 no.3
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    • pp.255-262
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    • 2020
  • Obesity is a critical health issue in Korea, where half of all adults are overweight and a third obese. Aronia melanocarpa -rich in flavonoids and phenolics- with antioxidant and anti-inflammatory activities, could have anti-obesity activity and reduce body fat mass by upregulating lipolysis and β-oxidation in obese mice. Male C57BL/6J mice (n=12) were assigned into four groups: normal chow (18% kcal from fat); high-fat diet control (HFD, 45% kcal from fat); HFD+A. melanocarpa (200 mg/kg diet); HFD+Xenical (500 mg/kg diet, positive control). Antioxidant capacity of A. melanocarpa was established in vitro and in vivo. Weight loss was induced as decreased adiposity and lowered respiratory quotient at rest suggested oxidation of stored fat. Adiposity reduction, accompanied with elevated fat utilization, was owing to enhanced activity of hormone-sensitive lipase. Thus, A. melanocarpa lowered adiposity by enhancing lipolysis and utilization of fatty acids in visceral fat.

A Study on Improvement Issues to Activate the Statistics Utilization of the Ministry of Food and Drug Safety (식품의약품안전처 통계 활용 활성화를 위한 개선과제 도출)

  • Jung, Daeun;Kim, Jinmin
    • Journal of Korea Society of Digital Industry and Information Management
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    • v.17 no.4
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    • pp.133-146
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    • 2021
  • In the field of food and drug, the role of the Ministry of Food and Drug Safety is becoming more important for national and public safety as well as national development and improvement of public welfare. Food and drug statistics are being used to determine the priorities and directions of policy for the promotion of public health and the development of the health industry. This study focuses on statistics from the MFDS. Through the analysis of the MFDS's statistics, the current status of the MFDS's production statistics was identified, and the survey of utilization and satisfaction of the MFDS's statistics was conducted on food and drug experts who actually use the statistics of the MFDS. In order to identify problems of the MFDS statistics, environmental factors affecting the MFDS statistics were derived, and the priorities of improvement tasks for its statistics were identified using AHP and IPA. In addition, the current situation of the statistical system, which serve as the basic coordinate for the establishment and execution of domestic food and drug policies, was identified and implications were provided.

Local Knowledge on Trees Utilization and Their Existing Threats in Rashad District of Nuba Mountains, Sudan

  • Adam, Yahia Omar
    • Journal of Forest and Environmental Science
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    • v.30 no.4
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    • pp.342-350
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    • 2014
  • Rural people of Sudan are endowed with a deep knowledge concerning the utilization of different tree species. However research on the local knowledge related to tree species utilization still lacks adequate attention. The study objectives were to identify the existing local knowledge related to the utilization of the tree species and the existing threats to the availability of the trees. A total of 300 respondents were selected randomly from Rashad district in Nuba Mountains in 2011. Semi-structured interview, direct observation, group discussion, preference ranking and direct matrix ranking were used to collect the data. The study results revealed that people of Nuba Mountains utilize different tree species for food, medicinal purposes, fodder, firewood, construction and cultural ceremonies. The study results also indicated that the availability of trees is negatively influenced by firewood collection, agricultural expansion, drought, overgrazing and charcoal production. The study concluded that local knowledge has crucial role in tree species utilization in Nuba Mountains. Further researches to document and substantiate the local knowledge on useful tree species are highly recommended.