This study investigated the effects of soy oligosaccharide consumption on feces bifidobacteria proliferation and feces lipid profiles in Korean young women. Eight healthy young women (25 - 34 years) were fed 15 g/day of soyoligosaccharide solution, containing 3 g of oligosaccharide as form of raffinose and starchyose, for 15 days with their habitual meals. Soyoligosaccharde intake increased the numbers of fecal total bacteria significantly until 10 days (p < 0.05) and the numbers of fecal bifidobactreia were significantly increased until 15 days (p < 0.05) . The fecal pH was significantly decreased (p < 0.05) by soyligosaccharide intake. Fecal lipid concentration showed the trend to increse, especially fecal triglyceride level was significantly increased by soy oligosaccharide intake (p < 0.05). The water contents of feces, the amount of feces, evacuation frequency and taking time to evacuation were not affected by soyoligosaccharide intake. The color of feces changed to yellow-brown, and hardness of stool and effort to evacuation were reduced by soyoligosaccharide intake. These results suggest that soyoligosaccharide intake (3 g/day) in young women improved the gut microflora and fecal lipid profile. Therefore, soy oligosaccharide has a potential to be used as one of the promising prebiotics, and controlled trials with larger sample sizes and longer duration are need to be studied further.
This study was performed to investigate nutritional effect of various dietary fibers on lead absorption, and protein and lipid metabolisms in growing rats. Sixty male rats of Sprague-Dawley strain weighing 140$\pm$1.1g were blocked into 10 groups according to body weight and fed 10 kinds of diet different with fiber sources [non-fiber, cellulose, pectin, guar gum or carboxymethylcellulose(CMC)] and lead levels (0 or 1%) for 4 weeks. Results were summerized as follows : 1) Food intake, weight gain, FER and PER were remarkably decreased in lead(Pb)-added groups. Weight gain, FER and PER in Pb-added pectin group were significantly lower than those in Pb-added non-fiber group. 2) Liver and kidney weights, femur weight and length, hematocrit and hemoglobin content were decreased in Pb-added groups. Especially femur and liver weights in pectin groups were the lowest among groups. 3) Total protein content in serum was significantly decreased in Pb-added groups but was not different with dietary fiber sources. Total lipid content in serum was not different with dietary Pb levels and fiber sources, but cholesterol content in serum of guar gum group was significantly decreased by Pb addition. 4) Nitrogen, lipid and cholesteol contents in liver were significantly decreased in Pb-added groups, and lipid content in liver of pectin and CMC groups was lower than other groups. 5) Daily urinary and fecal excretions of nitrogen, kipid and cholesterol were decreased in Pb-added groups, and fecal nitrogen was significantly increased in Pb-added groups, and fecal nitrogen of cellulose and guar gum groups was significantly higher than other groups. Fecal excretions of lipid and cholesterol were increased by dietary fibers, and especially fecal lipid was remarkably increased in pectin and guar hum group. 6) Pb contents in liver and femur were decreased by dietary fibers. Especially Pb contents in liver, kidney and femur were significantly decreased in guar gum group. 7) Daily urinary and fecal excretions of Pb were significantly increased in cellulose and guar gum groups, and fecla excretion of Pb in guar gum group was twice of non-fiber group. Pb absorption ratio was significantly decreased in guar gum group. In conclusion, dietary fibers have effect on protein and lipid metabolisms, and decreased intestinal absorption of Pb by increasing fecal excretion. But the degree of effect was different with dietary fiber sources.
Certain indigestible oligosaccharides may benefit gastrointestinal tract via fermentation and proliferation of desirable bacterial species. The purose of this study was to elucidate the effect of selected oligosaccharides, such as fructooligosaccharides(FOS), soybean oliosaccharides(SOE), and highly concentrated branched oligosaccharides(HiBOS), on fecal micorflora proliferation, lipid concentration, lipid peroxide formation and antioxidant enzymes acitivies in plasma and liver of the rats. Thirty two male Sprague-Dawley rats were randomly assigned to one of four treatments ; 1) control diet(AIN-93G diet); 2) control diet +5% FOS ; 3) control diet + 5% SOE ; 4) control diet + 5% HiBOS. The duration of the study was 4 weeks. Fecal bifidobacteria concentration were significantly higher (p<0.05) in the HiBOS group compared with the control after 4 weeks of dietary treatment. FOS and SOE groups also had higher fecal bifidobacteria levels than control, but statistical significance was not found. The concentration of plasma total lipid was decreased by oligosaccharide consumption, especially in HiBOS group(p<0.05). The concentration of plasma total triglyceride was significantly lower in all of the oligosaccharide containing groups compared with the control(p<0.05). The plasma total cholesterol concentration tended to be lower in the oligosaccharide consuming groups than control. The concentrations of hepatic total lipid, triglyceride and total cholesterol were not affected by consumption of oligosaccharides. Thiobarbituric acid reactive substance(TBARS) concentrations and antioxidant enzyme activities in plasma and liver were not affected much by experimental diets. There results suggest that dietary oligosaccharides may be beneficial for increasing intestinal bifidobacteria and lowering plasma lipid levels.
The effects of several carbohydrate sources on plasma, liver and fecal lipid contents of rats fed diet containing sucrose, corn starch, brown rice, milled rice or wheat flour with 0.3% cholesterol for four weeks were investigated. Plasma triglyceride and total cholestrol increased significntly in sucrose group, and decreased significantly in milled rice group compared to other three groups. There were no significant differences in plasma lipid contents among corn starch, brown rice and wheat flour groups. The contents of liver triglyceride and cholesterol in brown rice group decreased significantly compared to there four groups. Fecal excretion of total cholesterol in rice and wheat flour groups was significantly higher than in sucrose and corn starch groups. The contents of fecal bile acid increased significantly in milled rice and brown rice groups compared to other three groups. Fecal bile acid content of wheat flour group was similar to those of sucrose and corn starch group. From these results, it is suggested that rice has a possibility of hypolipidemic effect in cholesterol fed rat.
This study was conducted to investigate the effect of fructooligosaccharide on intestinal flora, lipid metabolism and immune response. Thirty two male rats of Sprague-Dawley strain were divided into two groups according to body weight. Each group was fed the diet containing 2% cholesterol or the normal diet, respectively for 4 weeks. Each group was again divided into two sub-groups and they were fed with the diet containing 5% of sucrose and fructooligosaccharide, respectively for 8 weeks. The number of bifidobacteria slight increased, but not significantly, in oligosaccharide groups. Plasma total lipid concentration in cholesterol group was signficantly increased compared to the value in normal group. Dietary oligosaccharide decreased plasma total lipid concentration and triglyceride concentrations in normal group, but not in cholesterol group. Fecal lipid excretion was higher in cholesterol group than in normal group. Fecal cholesterol concentration in cholesterol-oligosaccharide group was significantly increased compared to other groups. Cholesterol had slight effects on TBARS and the immune status, but dietary oligosaccharide had no effects on these variables. The results in this study suggest that dietary oligosaccharide had no effect on serum and liver profiles of rats fed high cholesterol diet but increases the fecal cholesterol excretion.
This study was performed to investigate the effects of dietary fibers from tangerine peels on lipid and cadmium metabolism. And effects were compared with those of commercial dietary fibers($\alpha$-cellulose, citrus pectin). Sixty male rats of Sprague-Dawley strain weighing 186.7$\pm$2.6g were blocked into 12 groups according to body weight, and were raised for 2 weeks. Cadmium chloride was given at the levels of 0 of 400 ppm in diet. Various dietary fibers were given at the level of 0 or 4%(w/w) of diet. The results are summarized as follow. In lipid metabolism, insoluble fibers[insoluble dietary fibers from tangerine peels(IDE), $\alpha$-celluolse] increased fecal excretion of lipids by inhcreasing feces weight, and decreased the concentrations of serum triglyceride and liver lipids. Soluble dietary fibers from tangerine peels(SDF) decreased the concentrations of serum cholesterol and liver lipids by increasing fecal lipids, too. In cadmium metabolism, soluble fivers(SDF, pectin) inhibited Cd absorption by increasing fecal Cd excretion and decreased Cd concentrations of intestion, liver and kidney. In conclusion, among the extracted fibers, SDF were more effective on lipid and Cd lowering activity and IDF had effect of increasing fecal lipid excretion. This result is useful to reduce food waste and utilize waste products.
Journal of the Korean Society of Food Science and Nutrition
/
v.27
no.1
/
pp.126-131
/
1998
This study was undertaken to determine the effect of yellow and black soybeans on plasma and hepatic lipid composition and fecal lipid excretion in Sprague Dawley rats. Animals were fed with diets containing 52% yellow soybean, 50% black soybean, or 20% casein for 7 weeks. Feeding efficiency was significantly increased in the animals fed soybeans(p<0.05). Plasma cholesterol concentration was significantly lowered in the group fed yellow soybean compared with black soybean and casein-fed control (p<0.05). Hepatic triglyceride concentration was significantly lowered in soybean groups compared with casein-fed control(p<0.05), whereas hepatic cholesterol concentration was not affected by diet treatments. Soybean feeding significantly increased fecal weight, triglyceride and bile acid contents compared with casein feeding(p<0.05). It is concluded that soybean feeding in rats affects plasma and hepatic lipid levels by increasing the excretion of triglyceride and bile acids.
Effects of a change in dietary Ca content and an alteration in dietary lipid type on lipid metabolism have been investigated in male Sprague-Dawley rats. The results obtained were summarized as follows ; 1) There was no comparable changes in food consumption and body weight gain among all 9 groups. 2) Serum total lipids and cholesterol were lowest when high Ca-corn all diet was fed, and highest when low Ca-butter diet was fed. 3) The contents of total lipids and cholesterol per g liver and total liver showed no consistent tendency with the dietary treatment. 4) Addition of Ca to the diet caused the significant increase in the dry fecal matter and fecal Ca. And fecal total lipids and fecal cholesterol were much greater if the high-Ca diet was fed than if control and low-Ca diet were fed. It is concluded that Ca and polyunsaturated acids have tendency of hypocholesterolemic effect.
This study investigated the effects of xylooligosaccharide on feces bifidobacteria proliferation, lactic acid concentration and lipid metabolism in healthy woman. Fourteen volunteers were randomly assigned to 2 groups : 1.4 g/day xylooligosaccharide intake group, 2.8 g/day xylooligosaccharide intake group. The duration of the study was 28 days. The amount of feces and excretion time were not affected by xylooligosaccharide intake. The color of feces changed to yellow brown, and hardness of stool and effort to evacuation were reduced by xylooligosaccharide intake. Xylooligosaccharide intake reduced the fecal pH significantly after 14 days in 2.8 g/day intake group (p < 0.05). The number of fecal bifidobacteria were significantly increased after 28 days in 1.4 g/day intake group (p < 0.05), and in 2.8 g/day intake group, the number of fecal bifidobacteria significantly increased after 14 days (p < 0.05). Water contents of feces were not affected by xyloolgosacchride intake. The fecal triglyceride and cholesterol concentrations were increased in 2.8 g/day intake group (p < 0.05), and in 1.4 g/day intake group, fecal cholesterol concentration only was increased (p < 0.05). The fecal lactic acid concentration was significantly increased in 2.8 g/day intake group (p < 0.05). Serum trigly-ceride, cholesterol and glucose concentration were significantly decreased in 2.8 g/day intake group (p < 0.05). In conclusion, xylooligosaccharide dietary supplementation may be beneficial to gastrointestinal health and lipid metabolism, and 2.8 g/day intake was more effective than 1.4 g/day intake.
The present study was conducted to evaluate the usefulness of common Korean legumes as a high-fiber supplement in therapeutic diets for diabetic patients. Streptozotocin-induced diabetic rats were used as animal models and four kinds of legumes, black soybean (BS), yellow soybean (YS), green pea (GP) and soybean curd residue (SCR) were tested as high-fiber supplements. Seven groups of normal and streptozotocin-induced diabetic rats were fed isocaloric experimental diets containing 8% dietary fiber from one of four legumes or purified cellulose and pectin for 6 weeks. The effects of the legumes on the glucose and lipid metabolism of diabetic rats was examined and compared with the effects of cellulose and pectin. The legume supplementation did not show any beneficial effect on glucose tolerance, however, it exhibited a plasma cholesterol-lowering effect in diabetic rats. The cholesterol-lowering action was especially strong in BS and the degree of the effect was comparable to that of pectin. The levels of total lipids, cholesterol, and triglyceride in the hepatic tissues of rats fed legume diets were similar to those of the pectin group. All legume supplements induced an increase in fecal steroid excretion. The fecal cholesterol contents were significantly high following the supplementations of YS and SCR (p < 0.05). The excretion of fecal bile acids in the BS and YS groups was significantly higher than it was in the pectin group (p < 0.05). Concentration of lipid peroxidation products in the blood and urine of diabetic animals was lower in the legume groups than in the cellulose group. The levels of hepatic lipid peroxidation products were significantly lower in the BS and YS groups than in the pectin group (p < 0.05). From the results of this study, the plasma cholesterol-lowering effect of BS is possibly due to the significant (p < 0.05) in-crease in fecal steroid excretion, which suggests that BS could be beneficial in improving abnormal lipid metabolism in diabetic rats. (Korean J Nutrition 36(5): 425∼436, 2003)
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