• Title/Summary/Keyword: Food Science and Nutrition

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Protective effect of Phyllostachys edulis (Carrière) J. Houz against chronic ethanol-induced cognitive impairment in vivo

  • Jiyeon Kim;Ji Myung Choi;Ji-Hyun Kim;Qi Qi Pang;Jung Min Oh;Ji Hyun Kim;Hyun Young Kim;Eun Ju Cho
    • Nutrition Research and Practice
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    • v.18 no.4
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    • pp.464-478
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    • 2024
  • BACKGROUND/OBJECTIVES: Chronic alcohol consumption causes oxidative stress in the body, which may accumulate excessively and cause a decline in memory; problem-solving, learning, and exercise abilities; and permanent damage to brain structure and function. Consequently, chronic alcohol consumption can cause alcohol-related diseases. MATERIALS/METHODS: In this study, the protective effects of Phyllostachys edulis (Carrière) J. Houz (PE) against alcohol-induced neuroinflammation and cognitive impairment were evaluated using a mouse model. Alcohol (16%, 5 g/kg/day for 6 weeks) and PE (100, 250, and 500 mg/kg/day for 21 days) were administered intragastrically to mice. RESULTS: PE showed a protective effect against memory deficits and cognitive dysfunction caused by alcohol consumption, confirmed through behavioral tests such as the T-maze, object recognition, and Morris water maze tests. Additionally, PE attenuated oxidative stress by reducing lipid oxidation, nitric oxide, and reactive oxygen species levels in the mice's brains, livers, and kidneys. Improvement of neurotrophic factors and downregulation of apoptosis-related proteins were confirmed in the brains of mice fed low and medium concentrations of PE. Additionally, expression of antioxidant enzyme-related proteins GPx-1 and SOD-1 was enhanced in the liver of PE-treated mice, related to their inhibitory effect on oxidative stress. CONCLUSION: This suggests that PE has both neuroregenerative and antioxidant effects. Collectively, these behavioral and histological results confirmed that PE could improve alcohol-induced cognitive deficits through brain neurotrophic and apoptosis protection and modulation of oxidative stress.

A Study on Food Habit and Nutrition Konwledge of Elementary School Teachers in Jeonbuk Area (전북지역 초등학교 남.여 교사의 식습관과 영양지식)

  • Yun, In-Suk;Jung, Su-Jin;Park, Jeong-Eun;Cha, Youn-Soo
    • Korean Journal of Human Ecology
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    • v.10 no.1
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    • pp.71-80
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    • 2007
  • This study was carried out to investigate dietary habits and nutrition knowledge of teachers, who are in charge of actual education of nutrition knowledge and dietary habits for students, of the elementary schools. Five hundred male and female teachers, who attended the programs for teacher's qualification of 1st and 2nd grades and function education during summer vacations, were surveyed using of questionnaire at Jeollabuk-do Educational Training Institute. A lot of teachers have had undesirable dietary habits. The most frequently(65.4%) used sources of nutrition knowledge were mass media such as TV, radio, magazines and newspapers, About 93% of teachers recognized nutrition education for the students, and 75.6% of them answered that their dietary habits may have an influence on students' dietary habits. Or, teachers' nutrition knowledge level was found to be low in general. The improvement of dietary habits and their nutrition knowledge of the teachers are very important because their dietary habits and nutrition knowledge have an influence on formation of students' dietary habits.

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Physical and Microbiological Changes of Sliced Process Cheese Packaged in Edible Pouches during Storage

  • Ryu, Sou-Youn;Koh, Kyung-Hee;Son, Sook-Mee;Oh, Myung-Suk;Yoon, Jung-Ro;Lee, Won-Jong;Kim, Suk-Shin
    • Food Science and Biotechnology
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    • v.14 no.5
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    • pp.694-697
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    • 2005
  • The objectives of this study were to compare the quality changes of cheese slices individually packed in four kinds of edible pouches in order to select the most suitable variety for individual packaging. The edible Z2 pouch (zein with oleic acid) was selected as maintaining the best cheese qualities based on the physical and microbiological changes undergone by the samples over 4-week storage at $5^{\circ}C$. The cheese sample individually packed in Z2 inner edible pouch and repacked in a plastic (OPP/LLDPE) outer pouch was not significantly different in physical and microbiological changes from that individually packed in a plastic (OPP/LLDPE) inner pouch and repacked in a plastic (OPP/LLDPE) outer pouch. Therefore, it may be concluded on the basis of the physical and microbiological evidence that the Z2 edible pouch can be used as an inner package for cheese slices when it is inside a plastic outer pouch.

The Contents of Heavy Metals (Cd, Cr, As, Pb, Ni, and Sn) in the Selected Commercial Yam Powder Products in South Korea

  • Shin, Mee-Young;Cho, Young-Eun;Park, Chana;Sohn, Ho-Yong;Lim, Jae-Hwan;Kwun, In-Sook
    • Preventive Nutrition and Food Science
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    • v.18 no.4
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    • pp.249-255
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    • 2013
  • Yam (Dioscorea) has long been used as foods and folk medicine with the approved positive effects for health promotion. Although consumption of yam products is increasing for health promotion, reports for the metal contamination in commercial yam powder products to protect the consumers are lacking. In this study, we aimed to assess whether the commercial yam powder products were heavy metal contaminated or not using the yam products from six commercial products from various places in South Korea. The contents of heavy metals (Cd, Cr, As, Pb, Ni, and Sn) in yam powder products were measured and compared to national and international food standard levels. Also, the metal contamination was monitored during the food manufacturing steps. The study results showed that the contents of heavy metals (Cd, Cr, As, and Pb) in yam powder products are similar to those in national 'roots and tubers' as well as in various crops. In comparison to three international standard levels (EU, Codex and Korea), Cd content in yam powder products was lower but Pb content was 5 times higher. Also, Pb, Ni, and Sn may have the potential to be contaminated during food manufacturing steps. In conclusion, the level of heavy metals (Cd, Cr, As, Ni, and Sn) except Pb is considered relatively safe on comparison to national and international food standard levels.