查詢結果分析
來源資料
頁籤選單縮合
題名 | 短波紫外線照射對洋菇和高溫菇儲藏品質之影響=Effect of Ultraviolet-C Irradiation on Stored Quality of Agaricus Bisporus and A. Bitorquis Mushrooms |
---|---|
作者 | 戴惠英; 陳佩汝; 毛正倫; | 書刊名 | 食品科學 |
卷期 | 25:1 1998.02[民87.02] |
頁次 | 頁94-103 |
分類號 | 435.29 |
關鍵詞 | 洋菇; 高溫菇; 短波紫外線; 總菌數; 顏色; 採收後現象; Agaricus bisporus; Agaricus bitorquis; Ultraviolet-C; Microbial count; Color; Postharvest phenomena; |
語文 | 中文(Chinese) |
中文摘要 | 本研究在探討經不同時間(0、0.5、1和2小時)短波紫外線照射之洋菇和高溫菇在商業保存溫度(12℃)儲藏期間品質之變化。短波紫外線照射後可使洋菇上總菌數顯著降低 0.49-0.58 個對數值,而照射組間並無差異。但在儲藏6天後與控制組間已無差異。照射洋菇之亮度 (L) 隨照射時間之增加而降低;總色差度 (△E)亦隨照射時間之延長而增加。儲藏期間洋菇之亮度和總色差度也因褐變而分別降低和增加。0.5小時照射之洋菇在12℃之儲藏期間有著較高的重量損失率。然而,其他採收後現象如開傘指標、蕈蓋直徑和覃柄長度,皆無顯著之差異。高溫菇在短波紫外線照射0.5和1小時後,其總菌數降低並不顯著,而 2 小時照射可顯著降低總菌數約0.65個對數值。高溫菇之亮度亦受照射之影響而降低;其總色差度則隨照射時間之延長而增加。高溫菇在儲藏時間其採收後現象皆無顯著之差異。 |
英文摘要 | The quality of Agaricus bisporus and A. bitorquis mushrooms irradiated for various amounts of time (0, 0.5, 1 and 2 h) with ultraviolet-C (UV-C) rays during storage at 12 ℃ was evaluated. UV-C irradiation caused a significant decrease in the microbial counts ofA. bisporus on the order of 0.49-0.58 log while no difference was found among the irradiated samples. However, after 6 days of storage, no difference was found between irradiated and control mushrooms. As the irradiation time was prolonged, the lightness (L) of A. bisporus decreased while the total color difference (△E) increased. During storage, L decreased and AE increased as a result of browning. During storage at 12 ℃, higher weight loss occurred in the A. bisporus irradiated with UV-C for 0.5 h. However, other postharvest measures, such as the maturity index, cap diameter and stipe length, did not significantly differ. The microbial counts of A. bitorquis irradiated with UV-C for 0.5 and 1 h did not decrease significantly while 2-h irradiation caused in microbial counts to decrease by 0.65 log. As the irradiation time was prolonged, the lightness of A. bitorquis decreased while,△E increased. During storage, the postharvest measures of A. bitorquis among the treatments did not significantly differ. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。