New Developments in Health and Nutritional Function Promoted by Chicken Eggs

Transcription

1 65 Nippon Shokuhin Kagaku Kogaku Kaishi Vol. /2, No. 1, / (,*++) 341, New Developments in Health and Nutritional Function Promoted by Chicken Eggs Katsumi Imaizumi Trustee and Vice-President Kyushu University, 0 +* + Hakozaki, Higashi-ku, Fukuoka 2+, 2/2+ Japan is one of the top consumer countries in the world of chicken eggs at almost one egg per person per day. Chicken eggs contain eight essential amino acids in an ideal balance, giving an amino acid score that is as high as that for milk and beef ( +** ) and the biological value that exceeds that of the latter foods ( 3. ). Furthermore, among animal-source foods, eggs are relatively rich in unsaturated fatty acids, fat-soluble vitamins and minerals such as phosphorus, calcium and iron. Despite these beneficial attributes, many consumers are worried about the relationship between chicken egg consumption and heart disease since chicken eggs are a high cholesterol food. Human studies in Japan reveal that consumption of egg yolk for. weeks did not result in an elevation of serum cholesterol level and there was no direct relationship between frequency of egg consumption and a risk of myocardial infarction in a +* -year follow-up study of 3*,*** Japanese subjects. Rat studies provide evidence of the hypocholesterolemic action of egg yolk phospholipids and egg white proteins. Furthermore, feeding egg yolk phospholipids to rats with brain injuries and senescence-accelerated mice resulted in enhanced learning ability. These results indicate that chicken egg is an attractive food from the aspects of health promotion and nutritional function. (Accepted May +1,,*++) Keywords : chicken egg, chicken egg yolk, chicken egg white, cholesterol : + +, ++ -./ M : 0* g + /,*,,* mg 30 3/ 2, 1* 1* /,.., * / , 2/2+ 0 +* + imaiz,@jcom.home.ne.jp + +, +0./ --./

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4 344 /2 1,* / PC B+, -. / +** *** g, +/ -1 C,* SAMP2 PC B+, EWP PE,+ B+, No,.. PC,./ gkg B +, *.*,/ mgkg +3 + pp.,2,,2/,**,,

5 69, : 345 pp.,. -,,**2 +/ Hamada, T., Ikeda, I., Takashima, K., Kobayashi, M., - Kodamaa, Y., Inoue, T., Matsuoka, R. and Imaizumi, K., pp Hydrolysis of micellar phosphatidylcholine accelerates. cholesterol absorption in rats and caco-, cells. Biosci. Biotech. Biochem., 03, +1,0 +1-, (,**/). pp..- /+,**2 +0 Imaizumi, K., Mawatari, K., Murata, M., Ikeda, I. and / Sugano, M., The contrasting e# ect of dietary phosphaetylcholine,**/ tidylethanolamine and phosphatidylcholine on serum 0 lipoproteins and liver lipids in rats. J. Nutr., ++-,,.*- pp.., /- +332,.++ ( +32-) Asato, L., Wang, M.F., Chan, Y.C., Yeh, S.H., Chung, H.M., pp. +,2 +-.,**2 Chung, S.Y., Chida, S., Uezato, T., Suzuki, I., Yamagata, N., Kokubu, T. and Yamamoto, S., E# ect of egg white on 2 serum cholesterol concentration in young women. J. Nutr. Sci. Vitaminol.,.,, 2130 ( +330). pp. /, /0,**2 +2 Matsuoka, Y., Kimura, M., Muto, A., Masuda, Y., Sato, M. 3 Steinberg, D., Parthasarathy, S., Carew, T.E., Khoo, J.C. and Imaizumi, K., Mechanism for the cholesteroland Witztum, J.L., Beyond cholesterol. Modifications of lowering action of egg white protein in rats. Biosci. low-density lipoprotein that increase its atherogenicity. Biotech. Biochem. 1,, +/*0 +/+, (,**2). N. Eng. J. Med., -,*, 3+/ 3,. ( +323 ). +3 Masuda, Y., Kokubu, T., Yamashita, M., Ikeda, H. and +* Inoue, S., Egg phosphatidylcholine combined with vitamin B+, improved memory impairment following ++ Honma, Y., Kobayashi, T., Yamaguchi, H., Ozawa, H., lesioning of nucleus basalis rats. Life Sci., 0,, 2+, 2,, Homma, K. and Ishiwata, K., Apolipoprotein E pheno- ( +332). type and basal activity of low-density lipoprotein recep-,* Hung, M-C., Shibasaki,K., Nishizono, S., Sato, M., Ikdeda, tor are independent of changes in plasma lipoprotein I., Masuda, Y., Kunou, M., Kawamura, M. Yamashita,M., subfractions after cholesterol ingestion in Japanese Inoue, S. and Imaizumi, K., Ibotenic acid-induced lesions subjects. Nutrition, +1, -+* -+. (,**+). of the medial septum increase hippocampal membrane +, McNamara, D. J., Dietary cholesterol and atheroscrelosis. Biochim. Biophys. Acta, +/,3, -+* -,* (,***). synthesis : Prevention by a phosphatidyl- associated protein kinase C activity and reduce ac- +- Nakamura, Y., Iso, H., Kita, Y., Ueshima, H., Okada, K., choline/vitamin B+, diet. J. Nutr. Biochem., ++, +/3 +0. Konishi, M., Inoue, M. and Tsugane, S., Egg consump- (,***). tion, serum total cholesterol concentrations and coro-,+ Hung, M-C., Shibasaki, K., Yoshida, R., Sato, M. and nary heart disease incidence : Japan Public Health Imaizumi, K., Learning behavior and cerebral protein Center-based prospective study. Br. J. Nutr., 30, 3,+ 3,2 kinase C, antioxidant status, lipid composition in senes- (,**0). cence-accelerated mouse : influence of phosphatidylcholine- +. Imaizumi, K., Sakono, M., Sugano, M., Shigematsu, Y. vitamin B+, diet. Br. J. Nutr., 20, (,**+). and Hasegawa, M., Influence of saturated and polyunsaturated egg yolk phospholipids on hyperlipidemia,- / +1 in rats. Agric. Biol. Chem., /-,,.03,.1. ( +323).