本研究以產孢性乳酸菌 S. inulinus BCRC 14647 作為試驗菌株，對其在 耐酸性、耐膽鹽、模擬腸道吸附性、對 S. enteritidis BCRC 10744 的拮抗性 以及菌株安全性等表現其潛在益生功效之基本特性進行探討，並與四種常 用之益生菌就上述試驗性質做比較，總結試驗之結果如下：
(1)於所有試驗之乳酸菌株中，孢子形態的 S. inulinus BCRC 14647 表現出僅 次於 L. acidophilus BCRC 10695 及 L. bulgaricus BCRC 14009 之耐酸性，
而膽鹽耐性則是僅次於 L. acidophilus BCRC 10695。
(2)具酸與膽鹽耐受性的孢子形態 S. inulinus 對 Caco-2 cells 的吸附性極低 (10.5%)，而其營養細胞則有中等程度的吸附性(65.1%)。
(3) S. inulinus 可產生高量的乳酸，能有效抑制 S. enteritidis 的生長，其培 養基上清液或菌體本身亦能有效抑制 S. enteritidis 對 Caco-2 cells 的吸附。
(4)預先以 S. inulinus 吸附於 Caco-2 cells 上可減少 S. enteritidis 對模擬腸道 細胞的吸附。
(5)由本研究的結果推斷，S. inulinus 預先定殖於腸道(prophylactic effect)或 是用於 S. enteritidis 之感染治療上(therapeutic effect)，S. inulinus 均具有潛 在之益生功效。
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(6)於生體外試驗得知 S. inulinus 並不具細胞侵入性，因此初步推論其對人 體不具腸道侵襲性。
(7)雖然營養細胞形態的 S. inulinus 其酸與膽鹽性耐受性不如孢子形態的 S.
inulinus，但由於營養細胞形態的 S. inulinus 能夠吸附於模擬人類腸道細胞 並拮抗腸炎沙門氏菌，諸多基本特性與其他試驗之益生菌類似，因此具有 潛在之益生功效。
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