响应面法优化低糖核桃营养派制作工艺研究
Optimization of Processing Technology of Low-Sugar Nutritious Walnut Pie by Response Surface Methodology
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摘要: 以核桃仁为原料,木糖醇为甜味剂,辅以燕麦片、麦芽糖、重瓣干玫瑰花瓣以及黑芝麻制作低糖核桃营养派。以核桃仁去皮浸泡时间、核桃仁烘烤时间、燕麦片添加量和木糖醇添加量为影响因素,利用感官评价和质构分析研究对成品品质的影响。在单因素试验的基础上,根据Box-Behnken响应面试验设计方法对低糖核桃营养派进行配方和工艺优化,结果表明:低糖核桃营养派的最佳工艺参数为:核桃仁添加量100 g,核桃仁去皮浸泡时间23 min,核桃仁烘烤温度160℃,核桃仁烘烤时间18 min,麦芽糖添加量10 g,燕麦片添加量20 g,木糖醇添加量13 g。在此条件下制得的低糖核桃营养派感官评分为95分,经过优化后的配方和工艺加工而成的低糖核桃营养派具有营养全面,搭配合理,风味独特的优点。Abstract: With walnut kernel as raw material, xylitol as sweetener, auxiliary by oatmeal, maltose, double petal dry rose petal and black sesame to prepare low-sugar nutritious walnut pie. The effects of peeling and soaking time of walnut kernel, baking time of walnut kernel, adding amount of oatmeal and xylitol on the quality of finished products were studied by sensory evaluation and texture analysis. Box-Behnken response surface methodology was applied to optimize the formula and technology of nutritious walnut pie on the basis of single factor experiments. The results showed that the best technological parameters of low-sugar nutritious walnut pie were as follows: walnut kernel 100 g, peeling and soaking time of walnut kernel 23 min, baking temperature 160 ℃,baking time 18 min, maltose 10 g, oatmeal 20 g and xylitol 13 g. The sensory score of the prepared low-sugar nutritious walnut pie was 95. The walnut pie had the advantages of comprehensive nutrition, reasonable collocation and special flavor.