Abstract
Blue-green alga,Nostoc commune is rich in dietary fiber. To examine the hypocholesterolemic effect, the alga or the dietary fibers were given to the rats fed cholesterol diet. Serum cholesterol elevation was significantly depressed in those rats. Cholesterol increased in the liver of rats given the alga and the fiber. The content of fecal cholesterol and bile acid unchanged. Of the dietary fibers, oxalate — oxalic acid soluble substance (OOSS) found abundant in the alga was most effective in lowering cholesterol in the serum. It seems to depress the elevation of LDL-cholesterol. The mechanism of hypocholesterolemic effect by OOSS remains to be unclear. This study indicated thatNostoc commune is expected to be a new dietary fiber source of possible importance in human nutrition.
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References
Anderson JW, Hamilton CC, Horn JL, Spencer DB, Dillon DW, Zeigler JA (1991) Metabolic effects of insoluble oat fiber on lean men with type II diabetes. Cereal Chem 68: 291–294.
Aoe S, Ohta F, Ayano Y (1989) Effect of rice bran hemicellulose on the cholesterol metabolism in rats. J Jpn Soc Nutr Food Sci 42: 55–61.
Ayano Y, Ohta F, Watanabe Y, Mita K (1980) ‘Dietary fiber’ fractions in defatted rice bran and their hypocholesterolemic effect in cholesterol-fed rats. J Jpn Soc Nutr Food Sci 33: 283–291.
Cara L, Borel P, Armand M, Senft M, Lafont H, Portugal H, Paul A-N, Boulze D, Lacombe C, Lairon D (1991) Plasma lipids lowering effects of wheat germ in hypercholesterolemic subjects. Plant Foods Hum Nutr 41: 135–150.
Cho S (1983) Effect of Egonori or Asakusanori feeding on the liver and serum lipid levels of rats. J Home Econ Jpn 34: 826–831.
Hori K, Ueno-Mohri T, Okita T, Ishibashi G (1990) Chemical composition, in vitro protein digestibility and in vitro available iron of blue green alga,Nostoc commune. Plant Foods Hum Nutr 40: 223–229.
Hori K, Ueno-Mohri T, Okita T (1992) Absorption of color additives and settling volume in water of blue-green alga, ishikurage (Nostoc commune). Plant Foods Hum Nutr 42: 31–36.
Kawatra A, Kapoor AC, Seghal S (1991) Hypocholesterolemic effect of guargum in overweight adults. Plant foods Hum Nutr 41: 241–245.
Klopfenstein CF (1990) Nutritional properties of coarse and fine sugar beet fiber and hard red wheat bran, I: Effects on rats serum and liver cholesterol and triglycerides and on fecal characteristics. Cereal Chem 67: 538–541.
Okita T, Sugano M (1989) Effects of the type and level of dietary proteins on plasma lipids, fatty acid profiles, and fecal steroid excretion in rats. Agric Biol Chem 53: 659–666.
Shaw R, Elliott WH (1978) Bile acids. LV. 2,2-Dimethoxypropane: an esterifying agent preferred to diazomethane for chenodeoxycholic acid. J Lipid Res 19: 783–787.
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Hori, K., Ishibashi, G. & Okita, T. Hypocholesterolemic effect of blue-green alga, ishikurage (Nostoc commune) in rats fed atherogenic diet. Plant Food Hum Nutr 45, 63–70 (1994). https://doi.org/10.1007/BF01091230
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DOI: https://doi.org/10.1007/BF01091230