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題 名 | 胡麻的吸濕特性及其在不同水分含量下對Aspergillus Parasiticus生長及產毒感受性之研究=Hygroscopic Characterization of Sesame and It's Susceptibility to the Growth and Toxin Production of Aspergillus parasiticus with Varying Moisture Content |
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作 者 | 危貴金; 陳桐榮; | 書刊名 | 中國農業化學會誌 |
卷 期 | 35:5 1997.10[民86.10] |
頁 次 | 頁561-572 |
分類號 | 341.91 |
關鍵詞 | 胡麻; 黃麴毒素; 吸濕特性; 高效能液相層析; Sesame; Aflatoxin; Hygroscopic characterization; HPLC; |
語 文 | 英文(English) |
中文摘要 | 本研究主要探討黑胡麻、白胡麻及胡麻仁等三種不同胡麻之等溫吸濕曲線,並 製備10、12及14%等三種不同水含量之胡麻,分別接種不同黃麴毒素菌量10□、10□及10 □spores/g(Aspergillus parasiticus ATCC 26691)孢子懸浮液,於30℃下培養二星期的 過程中,瞭解黃麴毒素菌(ATCC 26691)生長及毒素產生情形。由實驗結果得知,相同的水 活性下,黑胡麻及白胡麻的水含量並無顯著差異,而胡麻仁的水含量較前兩種胡麻低。不 同接菌量(10□、10□、10□ spores/g)於三種胡麻樣品中,其生長的最大黴菌數在10□ ~10□CFU/g之間;在三種胡麻中分別接種10□ spores/g的Aspergillus parasiticus ATCC 26691時,以黑胡麻及白胡麻在12%的水含量,而胡麻仁在10%的水量下,即可發現黃 麴毒素菌的生長及黃麴毒素B□及G□的產生。當胡麻樣品在水含量14%時,以黑胡麻產生 的毒素量最少,其次是白胡麻,而以胡麻仁樣品產毒量最高。在10、12、及14%不同水含 量下,分別接種10□、10□、及10□ spores/g於三種胡麻樣品中保溫培養之後,以高效 能液相層析法(HPLC)測定其麴毒素產生的情形。發現14%水含量之胡麻仁黃麴毒素的產 量最高,且在相同的水含量下,以接種量10□ spores/g者產毒量最高,其次是接種黴菌 量10□ spores/g者,而以接種10□ spores/ g的胡麻仁樣品產毒量最少。 |
英文摘要 | The characteristics of various sesames, including black, white and kernels, were studied. The sorption isotherms were determined under different water activities. The mycelial growth and aflatoxin of Aspergillus parasiticus (ATCC 26691) production under different moisture contents (10, 12, 14%) were also studied. The growth condition of A. parasiticus (ATCC 26691) at 30℃ was determined by means of viable plate counts on potato dextrose agar ( PDA) over a period of two weeks. The results showed that kernel sesame had lower moisture content than did the other two sesames under the same water activity. Irrespective of the initial spore load (10□、10□、and 10□ spores/g), maximum growth of 10□~10□ spores/g was obtained after two weeks. The concentrations of aflatoxin B□ and G□ were measured by high pressure liquid chromatography (HPLC). Production of toxins was highest in kernel sesame with 14% moisture content. A highter level of aflatoxin was produced by lower initial inoculum levels at 10□ spores/g. |
本系統中英文摘要資訊取自各篇刊載內容。