ASIA unversity:Item 310904400/1503
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    Title: 以HPLC檢測南投地區市售麵濕製品、米濕製品防腐劑含量研究
    Determination of preservative contents from market-available wet noodle products and wet rice products in Nantou Area by HPLC
    Authors: 曾月昭
    Contributors: 生物資訊學系碩士在職專班
    Date: 2008
    Issue Date: 2009-10-12 10:35:18 (UTC+0)
    Publisher: 亞洲大學
    Abstract: 為瞭解市售麵濕製品、米濕製品的衛生安全,業者在製造過程中是否有不當添加防腐劑之慮,而危害消費者健康,特針對麵濕製品、米濕製品進行調查,本研究以高效液相層析儀(HPLC),檢測麵濕製品、米濕製品中防腐劑(包括苯甲酸、己二烯酸及去水醋酸)的含量。 於96年5-11月間抽驗市售麵濕製品41件、米濕製品39件,共計80件。固體樣品以水蒸氣蒸餾抽出法,後以0.45μm濾膜過濾;液體樣品以甲醇與純水(1:1)溶液稀釋後,以0.45μm濾膜過濾後注入HPLC加以分析,HPLC使用SUPELCO C18 15 ㎝ × 4.6 mm(長度) 5μm(內徑)層析管,用甲醇:乙腈:5 mM檸檬酸緩衝液(1:2:7)為移動相,在流速為1 mL/min流完成間15分,於UV 230 nm下檢測苯甲酸、己二烯酸及去水醋酸。線性範圍5 ppm~100 ppm,線性相關係數在 r=1;儀器偵測極限(IDL) :己二烯酸(sorbic acid) 0.090 ppm、苯甲酸(benzoic acid)0.090 ppm、去水醋酸(dehydroacetic acid) 0.090 ppm;方法偵測極限(MDL)己二烯酸(sorbic acid)0.090 ppm、苯甲酸(benzoic acid)0.093 ppm、去水醋酸(dehydroacetic acid) 0.090 ppm;添加適當混合標準溶液於液體樣品中檢測分析平均回收率分別為:己二烯酸(sorbic acid) 98.380 %、苯甲酸(BA) 95.222%、去水醋酸(DHA) 97.864 %; 空白樣品試驗檢出均為0 ;重覆試驗分析平均相對差異百分比:己二烯酸(sorbic acid) 0.926% 、苯甲酸(benzoic acid) 0.996%、去水醋酸(dehydroacetic acid)2.251 %;查核樣品分析平均回收率:己二烯酸(sorbic acid) 101.625%、苯甲酸(benzoic acid)101.107%、去水醋酸(dehydroacetic acid)101.984%。80件市售樣品中,檢測結果有21件樣品的防腐劑超過限量。分別為己二烯酸4件、去水醋酸5件、苯甲酸12件與規定不符(麵食類食品衛生標準不得添加),總不合格率為26.250﹪,其中麵濕製品類8件,米濕製品類13件。
    Appears in Collections:[Department of Biomedical informatics  ] Theses & dissertations

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