摘要：本課題是以紅薯為原料，以白砂糖、蜂蜜為輔料調配出一種具有保健功效的功能性飲料。試驗中將清洗好的紅薯進行護色再打漿分離，并對其進行酶解、過濾、離心等加工，得到澄清的紅薯提取液；再加白砂糖、甜蜜素、檸檬酸和蜂蜜進行調配；最后高壓滅菌得到紅薯膳食纖維飲料的成品。本實驗采用單因素以及正交實驗的方法研究出紅薯膳食纖維飲料的最佳加工工藝條件。最佳的護色方案：抗壞血酸0.3%，檸檬酸0.6%，浸泡時間15min；最佳酶解工藝方案：α-淀粉酶0.08%，酶解溫度40℃，反應時間1h；研究了飲料的穩定性，添加了CMC-Na0.2%、黃原膠0.12%和海藻酸鈉0.15%。綜合分析結果可知，最佳的飲料配方為：原料與水配比為1:4，白砂糖4%，甜蜜素0.1%，檸檬酸0.25%，蜂蜜1%。紅薯飲料的殺菌溫度為121℃，處理時間10min~15min。通過酶重量法測得，該紅薯飲料中可溶性膳食纖維量為8.26g/100mL。使用阿貝折光儀測得可溶性固形物為10.0%。通過蒽酮比色法可以測得總糖的含量為9.57g/100mL。

關鍵詞 紅薯；膳食纖維；保健飲料；加工工藝

Abstract：This topic is based on sweet potato as raw material, with white granulated sugar and honey as supplementary material mix out a kind of health care efficacy of functional beverage. Test will be cleaned, sweet potato beating again for color separation, and carries on the enzymolysis, filtration, centrifugation and so on processing, clear sweet potato extract; Add sugar, sweet, prepared in the citric acid and honey; Finally autoclave get sweet potato dietary fiber beverage product.This experiment adopts the method of single factor and orthogonal experiment research of sweet potato dietary fiber drink the best processing technological conditions.The best color scheme: 0.3% ascorbic acid, citric acid 0.6%, the soaking time of 15 min; The best digestion process: alpha amylase 0.08%, enzymolysis temperature 40 ℃, 1 h reaction time; The stability of the beverage were studied, added CMC - Na0.2%0.12%, xanthan gum and sodium alginate 0.15%. Comprehensive analysis result, the best formula is: raw material and the water ratio of 1:4, granulated sugar 4%, honey 0.1%, citric acid 0.25% and honey 1%. Sweet potato beverage sterilization temperature is 121 ℃, the processing time is 10 min ~ 15 min. Measured by enzyme weight method, the soluble dietary fiber content in sweet potato beverage is 8.26 g/100mL. Using abbe refractometer measurement soluble solids 10.0%. By anthrone colorimetry can be measured the content of total sugar was 9.57 g / 100 mL

Keywords  Sweet potato; Dietary fiber; Health beverage; Processing technology