攝食複合乳酸菌粉及優酪乳對健康成人腸道菌相及致突變性之影響

Abstract

本試驗探討攝食添加Lactobacillus acidophilus, Lactobacillus rhamnosus, Lactobacillus plantarum, Bifidobacterium bifidum, Bifidobacterium breve, Streptococcus thermophilus, Lactococcus lactis及果寡糖之複合乳酸菌粉及添加Lactobacillus acidophilus, Lactobacillus lactis, Bifidobacterium lactis及Lactococcus lactis之優酪乳對兩組健康成人(共48位)腸道菌相、水分含量、pH值及致突變性之影響。 結果顯示，攝食複合乳酸菌粉可使受試者腸道中有益菌之雙叉桿菌顯著增加(p < 0.01)，而有害菌之產氣莢膜梭菌顯著降低(p < 0.001)，具改善腸胃道之功能。攝取複合乳酸菌粉後之檢體萃取液對S. typhimurium TA 98之致突變性降低48 % (p < 0.001)，對S. typhimurium TA 100之致突變性降低34 % (p < 0.001)，表示攝食複合乳酸菌粉可降低受試者腸道中致突變物之致突變性。 攝食優酪乳可使受試者腸道中有益菌之雙叉桿菌顯著增加(p < 0.05)，而有害菌之產氣莢膜梭菌顯著降低(p < 0.05)，具改善腸胃道之功能。攝取優酪乳後之檢體萃取液對S. typhimurium TA 98之致突變性降低41 % (p < 0.05)，對S. typhimurium TA 100之致突變性降低52 % (p < 0.001)，表示攝食優酪乳可顯著降低受試者腸道中致突變物之致突變性。

This study was conducted to investigate the effect of intake probiotic supplement formula containing Lactobacillus acidophilus, Lactobacillus rhamnosus, Lactobacillus plantarum, Bifidobacterium bifidum, Bifidobacterium breve, Streptococcus thermophilus, Lactococcus lactis, and fructo-oligo-saccharides and yogurt containing Lactobacillus acidophilus, Lactobacillus lactis, Bifidobacterium lactis, and Lactococcus lactis on the changes of intestinal flora, water content, pH values and mutagenicity in healthy adults. Results indicated that ingestion of the probiotic supplement formula significantly increased the colony counts of fecal bifidobacteria (p < 0.01), and decreased the growth of Clostridium perfringens (p < 0.001). These results suggested that the intake of probiotic supplement formula was beneficial in improving the intestinal function. The mutagenic activities of subjects’ fecal extracts against S. typhimurium strains TA98 and TA100 were significantly decreased 48 % (p < 0.001), and 34 % (p < 0.001), irrespectively. These results suggested that the intake of probiotic supplement formula decrease the mutagenicity of mutagens in the intestinal tract. Another result indicated that ingestion of yogurt significantly increased the colony counts of fecal bifidobacteria (p < 0.05) and decreased the growth of Clostridium perfringens (p < 0.05). These results suggested that the intake of yogurt was beneficial in improving the intestinal function. The mutagenic activities of subjects’ fecal extracts against S. typhimurium strains TA98 and TA100 were significantly decreased 41 % (p < 0.05), and 52 % (p < 0.001), irrespectively. These results suggested that the intake of yogurt decrease the mutagenicity of mutagens in the intestinal tract.