查詢結果分析
來源資料
頁籤選單縮合
題 名 | 天然膳食纖維與生技合成難消化性多醣類對部份腸道細菌產酸之影響 |
---|---|
作 者 | 楊雅清; 蔣鳳琳; 丘志威; 蔡敬民; | 書刊名 | 中華民國營養學會雜誌 |
卷 期 | 18:3/4 民82.10 |
頁 次 | 頁165-174 |
分類號 | 411.38 |
關鍵詞 | 膳食纖維; 合成多醣類; 腸道細菌; Dietary fiber; Synthetic oligosaccharides; Intestinal microflora; |
語 文 | 中文(Chinese) |
中文摘要 | 本實驗旨在探討腸道細菌利用天然膳食纖維與生物技術合成多醣類之產酸情形。實驗選用人體腸道長見的六株細菌,分別是Bifidobacterium bifidum、Bifidobacterium longum、Lactobacillus acidophilus、Enterococcus faecalis、Bacteroids fragilis、Escherichia coli,利用體外試驗之方法,於37°C、厭氧的情況之下,培養於含有纖維素、關華豆膠、阿拉伯膠、聚糊精、泛纖維的五種不同難消化性醣類的培養液中。在培養0,4,8,12,24,48小時後檢測培養液pH值變化情形以作為評定對醣類利用之指標。結果B. bifidum和B. longum對泛纖維與聚糊精之利用產酸較天然膳食纖維強,而泛纖維之產酸情形又較聚糊精強。L. acidophilus、E. Faecalis和E. coli亦會利用泛纖維與聚糊精,而使pH值下降,但下降幅度比B. bifidum或B. longum均明顯地較小;而這三株菌利用天然膳食纖維之pH值下降情形則不明顯。B. fragilis對於所有天然膳食纖維與生技合成難消化性多醣類之利用產酸情形均不佳。 |
英文摘要 | This study was to investigate the effect of natural dietary fibers and biosynthetic polysaccharides on the acid production by selected intestinal microflora. Sixbacteria strains were cultured anaerobically in broth containing five different indigestible dietary fibers namely, cellulose guar gum, gum arabic, polydextrose andpine fiber at 37°C. Acid production was examined at 0, 4, 8, 12, 24, 48 hours.The results showed that Bifidobacterium bifidum and Bifidobacterium longum inbiosynthetic polysaccharides had more acid production than that in the naturaldietary fibers. Moreover, pine fiber had lower pH than polydextrose. Lactobacillus acid ophilus, Enterococcus faecalis and Escherichia coli could utilize pine fiberand polydextrose to produce acids, but the pH values of these three bacteriawere higher than the ones of B. bifidum and B. longum. The difference of thesethree bacteria strains in utilizing the natural dietary fibers to reduce the pHvalues was not significant. The pH reduction effect by Bacteroides fragilis wasnot observed under the fiber sources. |
本系統中英文摘要資訊取自各篇刊載內容。