查詢結果分析
相關文獻
- Water Status of Two Gelatin Gels during Storage as Determined by Magnetic Resonance Imaging
- Multiple Sclerosis in Children: Clinical, Neuroimaging, and Neurophysiological Correlations
- Lipoma of the Mesentery in a Child: MRI Appearance
- 乳酸菌發酵之魚肉香腸加工
- Blood Flow Measurement and Visualization from MR Images
- Congenital Diaphragmatic Hernia Diagnosed by Magentic Resonance Imagine in Late Infancy: Report of One Case
- 市售休閒食品脂質及反式脂肪酸含量與其品質分析
- 剝皮魚乾製品加工方法的改良
- 不同加工處理之乾甜梅品質
- 遠紅外線乾燥混合鯖魚漿製品之儲藏品質的探討
頁籤選單縮合
題 名 | Water Status of Two Gelatin Gels during Storage as Determined by Magnetic Resonance Imaging=以核磁共振影像分析技術觀察貯存期間兩動物膠膠體之水分子狀態 |
---|---|
作 者 | 鍾依林; 賴喜美; | 書刊名 | 藥物食品分析 |
卷 期 | 12:3 2004.09[民93.09] |
頁 次 | 頁221-227+288 |
分類號 | 341.91 |
關鍵詞 | 核磁共振影像; 動物膠膠體; 水分子狀態; 弛緩時間; 水活性; Water status; Gelatin gel; Magnetic resonance imaging; MRI; Transverse relaxation time; T[feaf]; Water activity; Aw; |
語 文 | 英文(English) |
中文摘要 | 本研究建立以核磁共振影像 (magnetic resonance imaging,MRI) 分析技術探討兩塊不同水活性的動物膠膠體[Aw=0.968 (H-gel) 及Aw=0.828 (L-gel)],於貯存期間,膠體間及膠體內之水分子移動狀態的非破壞性測試技術。膠體中之水分予以MSME脈衝序列測定其氫原子之他緩時間 (relaxationtime,T2) 。結果顯示,H-gel的平均T2值隨者時存時間的增加而減小,而L-gel的平均T2值則隨者貯存時間的增加而增大;但貯存15天後,雖然兩膠體的Aw值已達相近,但L-gel的平均T2值達大於H-gel的平均T2倍,且兩膠體內各部位之T2值也不同。此乃由於貯存期間水分子由高Aw的膠體往低Aw的膠體移動,而膠體內的水分子也不斷地再移動。本研究所建立之兩膠體模式系統及MRI分析技術,可以以非破壞性的方式成功地觀察水分子於不同Aw的物質問之移動與分佈情形,同時也可用來評估複雜組成之系統,例如食品,於貯存期間之水分子狀態及結構變化。 |
英文摘要 | A two-gelatin-gel model system was used to investigate the water status of two gels with different Aw, 0.968 (H-gel) and 0.828 (L-gel), using magnetic resonance imaging (MRI) techniques. A multi slice-multi echo pulse sequence was applied and the transverse relaxation time (T2) of water protons was calculated. During storage the average T2 values of H-gel decreased, while those of L-gel increased. However, at the end of storage (15 days) when the Aw of two gels were the same, the average T2 values of L-gel were larger than those of H-gel, and heterogeneous T2 values were observed in both gels. This was due to water migration between the two gels and redistribution of water in each gel during storage. The two-gelatin-gel model system and nondestructive MRI technique established in this study offer a good method to monitor moisture redistribution between gels with different Aw and to investigate the water status and structural changes in food systems during storage. |
本系統中英文摘要資訊取自各篇刊載內容。