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강명화,최미경,Kang, Myung-Hwa,Choi, Mi-Kyeong 한국식품영양학회 2016 韓國食品營養學會誌 Vol.29 No.4
The purpose of this study was to compare the quantitative and qualitative assessment of dietary intake between patients with metabolic syndrome (MetS) and healthy subjects and to investigate dietary factors related to MetS. Anthropometric measurements, blood analysis, and dietary intake as assessed by 24-hour recall were conducted in MetS patients (n=15) and healthy subjects (n=25). In order to assess the quantity and quality of dietary intake, daily nutrient intake, nutrient density, nutrient intake to dietary reference intake (DRI), nutrient adequacy ratio (NAR), food intake, dietary diversity score (DDS), and dietary variety score (DVS) were analyzed. The statistical differences between MetS patients and controls were analyzed using the SAS software program. Daily energy intake and food intake were not significantly different between the two groups (2,154.3 kcal vs. 1,872.9 kcal; 1,280.0 g vs. 1,261.6 g). There were also no significant differences in daily nutrient intake, nutrient intake ratio to DRI, NAR, or DVS between the MetS group and the control group. However, daily intake of eggs and milk in MetS patients was significantly lower than in the control group (9.0 g/day vs. 30.3 g/day, p<0.05; 0 g/day vs. 49.7 g/day, p<0.05). These results indicate that low intake of eggs and dairy products may be related to the development of MetS.
식이 참깨탈지박이 에탄올을 공급한 쥐에 유도된 산화 스트레스 억제효과
강명화(Myung-Hwa Kang),민관식(Kwan-Sik Min),류수노(Su-Noh Ryu),방진기(Jin-Ki Bang),이봉호(Bong-Ho Lee) 한국식품영양과학회 1999 한국식품영양과학회지 Vol.28 No.4
쥐에게 4주 동안 참깨 탈지박과 함께 에탄올을 공급한 결과 탈지박 첨가군에서 체중이 약간 증가했다. 혈청 중 총 콜레스테롤 농도는 탈지박 첨가시 유의적으로 저하되었고, 간조직 중지질 과산화물 생성도 유의적으로 감소하는 것으로 나타났다. 생체내 해독 효소인 GST 활성은 탈지박 첨가시 유도되었다. 탈지박 첨가는 생체내 지질과산화물 생성을 억제시키고, 해독 효소 활성을 증가시켜 생체내 생리활성을 나타내는 것으로 나타났다, 참깨 탈지박을 이용한 술안주, 스낵류 이용을 위한 기능성 식품재료로서 활용이 가능할 것으로 사료된다. To evaluate the effect of defatted sesame flour(DSF) on the oxidative stress of ethanol-feeding in rats, Wistar male rats were divided into 4 groups of control, ethanol, DSF and DSF-ethanol. Each group was sacrificed after feeding for 4 weeks and was examined by measuring the formation of 2-thiobarbituric acid-reactive substance(TBARS), total cholesterol(TC) in serum, redox glutathione-S-transferase(GST) enzyme activity and the contents of glutathione(GSH) in the liver. The formation of TBARS in the liver after ethanol feeding was significantly increased comparing to the control, but the levels were significantly decreased by the DSF as compared to the ethanol feeding group(p<0.05). When compared to fed control diet, we found that serum TC levels were significantly lower in the DSF fed group than control group (p<0.05). The activity of hepatic GST was significantly increased by DSF as compared to the control and was decreased by ethanol-feeding. On the other hand, the hepatic contents of GSH were unaffected by DSF feeding. Our findings suggest that feeding DSF may inhibit ethanol-induced oxidative stress may be due to the stimulation of antioxidative activity by sesaminol glucosides in DSF.
충남지역 일부 초등학생과 중학생 중 아침결식군과 아침식사군의 식행동과 열량 및 영양소 섭취 상태 평가
강명화 ( Myung Hwa Kang ),최미경 ( Mi Kyeong Choi ),김미현 ( Mi Hyun Kim ) 대한영양사협회 2011 대한영양사협회 학술지 Vol.17 No.1
The purpose of this study was to evaluate the dietary behaviors as well as energy and nutrient intake in elementary and middle school students according to breakfast eating status. The survey was conducted using questionnaires and dietary records among 191 elementary school students and 280 middle school students residing in Chungnam. The subjects were divided into two groups according to frequency of eating breakfast: breakfast skipping (frequency of eating breakfast under 4 times/week) and breakfast eating (frequency of eating breakfast over 5 times/week). The rate of breakfast skipping was 27.2% for the elementary school students and 31.1% for the middle school students. The breakfast skipping group had a significantly lower frequency of having dinner, a lower proportion of eating at regular meal times, and a significantly higher frequency of leaving food after meals than the breakfast eating group for both elementary and middle school students. In the case of the elementary students, there was a significant difference in carbohydrate intake between the two groups. In the case of the middle school students, the intakes of energy, protein, carbohydrate, dietary fiber, vitamin A, vitamin B2, niacin, vitamin B6, folate, vitamin C, Ca, and Fe in the breakfast skipping group were significantly lower than those in the breakfast eating group. These results show that nutrient deficiencies among breakfast skipping individuals cannot be compensated for at the other meals during the day in middle school-aged adolescents whose nutrient requirements are high for growth. Therefore, in support of proper dietary management, it is necessary to promote and support breakfast eating in adolescents.
식물성 식용유 첨가가 PAHs 오염토양 펜톤처리에 미치는 영향
강명화(Myung-Hwa Kang),김승호(Seung-Ho Kim),박영구(Young-Goo Park),박준석(Joon-Seok Park) 유기성자원학회 2006 유기물자원화 Vol.14 No.1
본 연구에서는 PAHs 오염토양의 펜톤처리시 식물성 식용유와 폐식용유의 첨가가 처리효율에 미치는 영향을 알아보고자 실시하였다. 토양 중 철성분 때문에 철용액을 첨가하지 않고 과산화수소만을 첨가한 경우에도 펜톤반응이 진행되었으며, 과산화수소는 3%에서 최대 효율을 나타내었다. 3%의 과산화수소만을 첨가한 경우에는 총 PAHs가 약19% 제거되었는데 여기에 17.5 mM FeSO4(Ⅲ)를 첨가한 경우에는 25%가 제거되어 6% 정도의 효율증진을 나타내었다. 올리브유 1%를 펜톤반응과 동시 또는 전에 첨가한 경우 제거효율은 37~38%로써 펜톤처리만을 한 경우의 22.3% 보다 약 15%정도 제거효율을 증가시킬 수 있었다. 올리브유, 콩식용유, 그리고폐식용유 농도를 1%와 5%로 하여 주입한 결과 대부분 35% 이상의 처리효율을 나타내었으며, 오일의 종류와 농도에 따른 영향은 크지 않았다. 폐식용유를 사용하였을 때 고가의 올리브유를 사용한 경우와 큰 효율차이를 나타내지 않았으므로 폐식용유 사용시 추가비용이 거의 소요되지 않는 장점이 있을 것으로 판단된다. 3% 과산화수소와 2.5 mM FeSO4에서 1% 올리브유 첨가 후 15분이 지나서 펜톤반응을 실시한 경우벤젠고리 3~4개와 5~6개인 화합물의 제거율은 펜톤반응만을 실시한 경우 보다 각각 13%와 17% 정도 증가하였다. This study was performed to evaluate the effect of the addition of vegetable oils on Fenton treatment of PAHs-contaminated soil. Fenton reaction can be proceeded in the soils contaminated with PHAs only in the presence of H2O2 because of Fe content in the soil. In this case, optimum H2O2 concentration was 3%. When 17.5 mM FeSO4(Ⅲ) was added with 3% H2O2, the removal rate was increased up to 25%, whereas 19% of PAHs was removed with H2O2 alone. The addition of 1% of olive oil to the contaminated soil before the Fenton reaction or simultaneously increased the removal rate about 15%, compared to the case of Fenton reaction only. There were no significant differences in the removal rates of PAHs, regardless of different kinds and concentration of oils. (olive oil, soybean oil, and used-vegetable oil). The used-vegetable oils were not different from the new, expensive oils in the removal rate, so their use will be desirable in saving the money. In addition of 1% of olive oil after the reaction of 3% H2O2 and 2.5 mM FeSO4(Ⅲ), the removal rates of 3~4 and 5~6 ring compounds were increased 13% and 17%, respectively, compared to the case of Fenton reaction only.
강명화(Myung-Hwa Kang),류수노(Su-Noh Ryu),방진기(Jin-Ki Bang),강철환(Chul-Hwan Kang),김동휘(Dong-Hwi Kim),이봉호(Bong-Ho Lee) 한국식품영양과학회 2000 한국식품영양과학회지 Vol.29 No.2
국내산과 국외산 참깨의 이화학적 특성을 파악하기 위해 일반성분 분석, 지방산 조성, 무기질 함량(Ca, K, Mg, Na) 및 세사민과 세사몰린 함량를 분석한 결과를 요약하면 다음과 같다. 한국산, 중국산, 수단산 참깨의 일반성분 분석 결과 조단백질 함량과 기름양에서 수단산이 약간 높게 나타났다. 올레산과 리놀산을 합한 총 양질 불포화 지방산은 한국산 88.48%, 중국산 84.97%, 수단산 86.39%로 한국산 참깨가 양질의 지방산을 다량 함유하였다. Ca, K, Na, Mg 성분 분석 결과 한국산 참깨는 Mg이 중국산 참깨는 Ca 함량이 높게 나타났다. 참깨 종실과 탈지박 간에 무기 성분에는 유의적인 차이가 없었다. 참깨 중 세사민과 세사몰린 성분 분석 결과 한국산 참깨가 중국산과 수단산보다 유의적으로 높은 수준이었다(p<0.05). 참깨의 일반성분 분석 결과 한국산, 중국산, 수단산 참깨간에는 미미한 차이였지만 세사민과 세사몰린과 같은 특수성분에서 한국산이 유의적으로 높은 수준(p<0.05)으로 나타나 이화학적 특성이 우수할 것으로 생각된다. To obtain basic information for the quality evaluation, the introduced or domestic sesame seeds were investigated to measure proximate components (crude protein, ash, mineral and oil) and isolated by preparative HPLC system for lignan contents. Although crude protein contents were the highest in Sudan sesame seeds, lipid, ash and mineral contents were not significantly (p<0.05) different between introduced and domestic sesame seeds. Unsaturated fatty acids such as oleic and linoleic acids were the highest in the domestic sesame seeds. The Mg content of domestic sesame seeds also was larger than that of introduced sesame seeds. A Ca content of domestic sesame seeds, however, was significantly (p<0.05) lower than that of China. Lignan contents, the most important component known as antioxidant, were significantly (p<0.05) higher in domestic sesame seeds than other sesame seeds tested. Our findings suggest that domestic sesame seed has the best quality in terms of the functional components.