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최면,Choe, Myeon 한국식품위생안전성학회 1992 한국식품위생안전성학회지 Vol.7 No.4
Among the nutrients of biological importance, minerals are of particular interest in human nutrition because the range of adequate intake is so narrow. As the results of a series of interaction experiments between dietary fiber sources and minerals, there are many inconsistencies in the experimental data regarding the effect of dietary fibers on mineral bioavailability. the mechanism by which dietary fiber might influence mineral absorption is related to its physicochemical properties. These properties involve the ability of dietary fiber to (1) act as a weak cation exchanger, (2) decrease transit time, (3) dilute mineral concentration by increasing fecal bulk and (4) resist digestion in the large bowel. Regardless of the large number of human and animal studies available, a carful review of these publications dose not provide the answer as to whether the adverse effect of dietary fibers on mineral absorption is the fiber itself or some associated dietary factors( e.g. phytate, oxalate, ascorbate, citrate and protein, mineral-mineral interaction, etc) that are responsible for this action. As a result of the complexity of interaction that may take place between minerals. dietary fiber, and other component of food ; it becomes very difficult to blame fiber alone as a negative factor of mineral nutrition. We absolutely need more research with advanced tools rather than metabolic balance study.
Effect of Metal Ions on the Oxidation of Soybean Oil and Its Fried Noodle
최면,김태웅,이양희,Choe, Myen,Kim, Tae-Woong,Lee, Yang-Hee Korean Society of Food Science and Technology 1977 한국식품과학회지 Vol.9 No.2
본(本) 실험(實驗)은 대두유(大豆油)와 그 튀김면(麵)에, 한국(韓國) 상수도(上水道) 기준(基準) 또는 물리적(物理的)으로 정제(精製)한 지하수(地下水)에 함유가능(含有可能)한양(量)과 동일(同一)한 양(量)의 철(鐵) ion과 동(銅) ion을 각각(各各)에 첨가(添加)하여 그들에 의한 산패촉진정도(酸敗促進程度)를 측정(測定)하고, 아울러 일반적(一般的)으로 널리 쓰이고 있는 유지(油脂)의 황산화제(抗酸化劑)로서 BHA (butylated hydroxyanisole) 또는 citric acid가 이들 금속(金屬)에 의(依)한 산패촉진정도(酸敗促進程度)를 어느 정도 감소(減少)시키는 가를 비교(比較) 검토(檢討)하였다. 본(本) 실험(實驗)의 결과(結果), 대두유(大豆油)와 그 튀김면(麵)의 경우 모두, 철(鐵) ion 또는 동(銅) ion의 첨가(添加)는 이들 ion이 첨가(添加)되지 않은 경우와 비교(比較)할때 뚜렷한 산패촉진효과(酸敗促進?果)를 보였다. 특히, 동(銅) ion이 첨가(添加)된 경우에 있어서는 시간(時間)이 경과(經過)함에 따라 철(鐵)ion이 첨가(添加)된 경우보다 3배(倍) 내지 6배(倍)의 강(强)한 산패촉진효과(酸敗促進?果)를 보였다. 항산화제(抗酸化劑)인 BHA와 citric acid의 이들 금속(金屬)에 의(依)한 산패촉진(酸敗促進)에 대(對)한 저해작용도(沮害作用度)는 citric acid가 첨가(添加)된 경우가 BHA첨가(添加) 경우보다 컸으며, BHA가 첨가(添加)된 경우 그 효과(?果)는 극(極)히 미약(微弱)하였다. 또한 이들 항산화제(抗酸化劑)의 저해작용도(溫害作用度)는 동(銅) ion의 경우보다 철(鐵) ion의 경우에 더 효과적(效果的)인 것으로 보여진다. In the present study, the proxidant effect of ferrous and cupric chlorides which added to soybean oil and its fried noodle in the same concentration of the city water and the physically refined underground water were determined. As the inhibitor of metal proxidation, BHA and citric acid which are used widely in oil industry as antioxidants were compared. In both cases of soybean oil and its fried noodle, the addition of cupric chloride and ferrous chloride showed prominent proxidant effect. Especially, cupric chloride marked more proxidant effect than ferrous chloride by 3 to 6 times with the elapse of time. In the inhibition activity of metal proxidation, citric acid was more effective than BHA. The 1ppm of Cu +0.01% of citric acid treated soybean oil showed less proxidant effect than the control at the later stage. The inhibition activity of citric acid on $Fe^{++}$ in soybean oil was more effective than $Cu^{++}$ in soybean oil.
식이지방의 종류가 백쥐 상피 세포의 Protein Kinase C 활성에 미치는 영향
최면,김종대,주진순 ( Myeon Choe,Jong Dai Kim,Jin Soon Ju ) 생화학분자생물학회 1991 BMB Reports Vol.24 No.4
To determine the effect of dietary fats on Protein Kinase C(PKC) activity in mouse epidermal cells, female Balb/c mice (4 weeks of age) were placed on one of the 15% (w/w) of corn oil, sesame oil or beef tallow supplemented diets for at least 4 weeks. Protein kinase C was assayed by the modified procedure of Wise et al., and the activities among the groups were compared to that of corn oil group as the control. An apparent decrease of PKC activity in both cytosolic and membrane-associated fractions was observed from the animal fed sesame oil diet when compare with the animal fed corn oil diet. However, PKC activity of beef tallow fed group was increased slightly. In summary, dietary fats may contribute to mechanism of enhanced tumor promotion by changing PKC activity in mouse skin model.
식이지방의 종류가 백쥐 상피세포의 Protein Kinase C 활성에 미치는 영향
최면,김종대,주진순,Choe, Myeon,Kim, Jong-Dai,Ju, Jin-Soon 생화학분자생물학회 1991 한국생화학회지 Vol.24 No.4
식이지방의 종류가 Protein Kinase C(PKC) 활성에 미치는 영향을 고찰하기 위하여 Balb/c 백서를 3군으로 나누어 옥수수유, 우지, 참깨유를 식이지방원으로 15%(w/w)씩 4주간 투여한 후 상피세포를 분리하여 Wise 등의 방법으로 PKC 활성을 측정하였다. 참깨유로 사육된 백서의 상피세포를 옥수수유로 사육된 경우와 비교할 때, cytosolic 및 membrane-associated PKC 활성은 모두가 현저히 감소하는 것이 관찰되었으며 유의적은 아니지만 우지로 사육된 백서 상피세포는 반대의 경향을 보여 증가하는 경향을 고찰하였다. PKC 활성이 cell differentiation이나 proliferation 과정에 접지적 역할을 한다는 사실과 membrane-associated PKC가 발암물질인 TPA와 같은 phorbol esters의 수용체로서의 기능을 고려할 때 본 실험결과는 식이지방의 종류가 백쥐 상피 세포의 PKC활성을 변화시킴으로서 발암과정의 저해나 촉진을 가져올지도 모른다는 것을 암시하고자 한다. To determine the effect of dietary fats on Protein Kinase C(PKC) activity in mouse epidermal cells, female Balb/c mice (4 weeks of age) were placed on one of the 15% (w/w) of corn oil, sesame oil or beef tallow supplemented diets for at least 4 weeks. Protein kinase C was assayed by the modified procedure of Wise et al., and the activities among the groups were compared to that of corn oil group as the control. An apparent decrease of PKC activity in both cytosolic and membrane-associated fractions was observed from the animal fed sesame oil diet when compare with the animal fed corn oil diet. However, PKC activity of beef tallow fed group was increased slightly. In summary, dietary fats may contribute to mechanism of enhanced tumor promotion by changing PKC activity in mouse skin model.