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題 名 | 胡蘿蔔渣應用於高纖擠壓產品適當操作條件之研究=The Optimum Operating Conditions for High-Dietary Fiber Carrot Pulp Extrudates in a Single-Screw Extruder |
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作 者 | 彭錦樵; 潘憶萱; | 書刊名 | 食品科學 |
卷 期 | 25:5 1998.10[民87.10] |
頁 次 | 頁547-558 |
分類號 | 435.61 |
關鍵詞 | 擠壓; 胡蘿蔔渣; 膳食纖維; Extrusion; Optimum operation condition; Carrot pulps; Dietary fiber; |
語 文 | 中文(Chinese) |
中文摘要 | 本研究是利用單軸擠壓機,將胡蘿蔔渣添加在玉米粉中,試製高纖休閒食品。實驗操作參數包括模具溫度、螺軸轉速、胡蘿蔔渣粉添加比例。本文之目的在探討操作參數對產品的徑向膨發率、膳食纖維含量、水溶性指標與吸水性指標之影響,以及利用反應曲面法找出範圍內適當操作條件。 實驗結果顯示:提高模具溫度、螺軸轉速及胡蘿蔔渣粉添加比例皆會使產品的徑向膨發率下降。產品的膳食纖維含量則是隨著模具溫度的升高,而有先升後減的趨勢,且螺軸轉速的升高會造成膳食纖維含量微升。水溶性指標與模具溫度有正向的關係,且螺軸轉速提高會讓水溶性指標先降後升。吸水性指標和螺軸轉速無關,在模具溫度為96-99℃,胡蘿蔔渣粉添加比例為9.6%時有一極小值。 利用反應曲面法得到的適當操作條件是模具溫度為98.4-103.2℃,螺軸轉速為478rpm,胡蘿蔔渣粉添加比例為6.8-7.2%;在此操作條件下,可得到膳食纖維含量為14-15%的擠壓休閒食品。 |
英文摘要 | Waste carrot pulp was used as an additive in corn grits to produce a high dietary fiber snack food using a single-screw extruder. The operation variables were the die temperature, screw speed, and carrot pulp content. Response surface methodology was used to investigate the effects of the operation variables on the extrudate's longitudinal expansion ratio, total dietary fiber content, water solubility index, and water absorption index. Results indicated that increasing the die temperature, the screw speed, or the ratio of carrot pulp decreased the longitudinal expansion ratio. Increasing the die temperature and screw speed both resulted an increase of dietary fiber content. Furthermore, increasing the die temperature resulted in an increase of the water solubility index. However, increasing the screw speed resulted in a decrease of the water solubility index. The water absorption index was independent of the screw speed and was minimum under a 96-99℃ die temperature and 9.6% carrot pulps ratio. The optimum operation conditions for producing this high dietary fiber snack food using a single-screw extruder were as follows: 98.4-103.2℃ die temperature, 478rpm screw speed, and 6.8-7.2% ratio of carrot pulp. The extrudate's dietary fiber content was 14-15% under the optimum operation conditions. |
本系統中英文摘要資訊取自各篇刊載內容。