Response Surface Optimization on Formulation of Cookie Made with Ultramicro Green Tea Powder
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摘要:
目的 优化超微绿茶粉曲奇饼干配方,为茶叶精深加工开发终端产品提供思路。 方法 对超微绿茶粉、糖粉、黄油的添加量进行单因素试验,通过感官审评对其进行质量评价,确定3个因素添加量的优化范围。在单因素试验基础上,采用Box-Behnken试验设计,进行3因素3水平响应面优化设计,共17组处理,考察超微绿茶粉、糖粉、黄油的添加量对超微绿茶粉曲奇饼干感官审评的影响,确定超微绿茶粉曲奇饼干的配方,并对优化配方加工的饼干进行感官评价、理化指标检测、质构评价。 结果 超微绿茶粉制作曲奇饼干的配方为:以总粉(低筋小麦粉+超微绿茶粉)100 g即100%计,蛋液添加量15%,柠檬汁1%,超微绿茶粉3.0%,黄油84.4%,糖粉25.9%,烘焙上火温度170 ℃,下火温度150 ℃,时间20 min。在此条件下加工的超微绿茶粉曲奇饼干,感官审评得分85.36分,风味较好。经质构仪分析,饼干的硬度为578.44 g,酥性为626.46 g·s。经检测,饼干的各项理化指标均符合国标要求。 结论 采用响应面法得出了超微绿茶粉曲奇饼干最优的关键配方,可用于规模化生产,为茶叶精深加工开发茶食品、缓解茶产业供需矛盾提供新的思路。 Abstract:Objective A formula for making cookies using ultramicro green tea powder as an ingredient was optimized. Method A single factor experiment was conducted to define the recipe including the ultramicro green tea powder, butter, and powdered sugar for making cookies evaluated by a sensory panel. A 3-factors Box-Behnken test was designed to optimize the amount of each ingredient based on the results of sensory evaluation, and the physical, and chemical properties of the cookies with the optimum crecipe were deteceted. Result The cookies baked in an air oven with an overhead temperature of 170 ℃ and a underneath temperature of 150 ℃ for 20 min, received a high sensory evaluation score of 85.36 with 100% of total flour (low-gluten wheat flour + ultramicro green tea powder), 15% of the additive amount of egg liquid, 1% of lemon juice, 3.0% of ultramicro green tea powder, 84.4% of butter, and 25.9% of powdered sugar. Measured by a texture analyzer, the cookies had the indices in line with the national standards on hardness of 578.44 g and on crispness of 626.46 g·s. Conclusion The cookie made with an optimized formula was well received by the sensory panel with acceptable instrumental texture measurements. It was considered suitable for mass producing a value-added product of green teas. -
Key words:
- Ultramicro green tea powder /
- cookies /
- response surface method /
- formulation
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图 1 超微绿茶粉添加量对曲奇的影响
图中不同小写字母表示显著差异(P<0.05),相同或无小写字母表示差异不显著(P>0.05)。图2、3同。
Figure 1. Effect of quantity of added ultramicro green tea powder on cookie quality
Data with different lowercase letters indicate significant differences (P<0.05); those with same or no lowercase letters, no significant difference (P>0.05). Same fo Figs.2,3.
表 1 试验变量的因素和水平
Table 1. Factors and levels of test variables
水平
Level因素 Factor 超微绿茶粉添加量A
Amount of ultramicro green tea powder/%黄油添加量B
Amount of butter/%糖粉添加量C
Amount of powdered sugar/%−1 2.5 80 24 0 3.0 85 26 1 3.5 90 28 表 2 超微绿茶粉曲奇饼干审评标准
Table 2. Evaluation criteria of ultramicro green tea powder cookie
项目
Item评分标准
Standard for evaluation得分
Score形态
Form外形完整、饱满,不收缩、不变形、不起泡,厚薄均一,大小均匀,底部平整,无粘连,边缘平滑 16~20 外形较完整、较饱满、收缩和变形少、起泡少,厚薄较均一,大小较均匀,底部平整,无粘连,边缘较平滑 10~15 外形不完整、有破碎、凹底和收缩较多、表面起泡,厚薄不均一,大小不均匀,有粘连 <10 色泽
Color表面呈草绿色,有光泽,无色泽不均,无白粉 16~20 表面呈草绿色,有光泽,色泽基本均匀,边缘和底部略有棕黄色,但不出现焦黑或过白 10~15 光泽不足、不均匀,有焦黑色或过白现象 <10 组织
Texture断面结构细密均匀,无杂质,无较大孔洞,表面细腻 16~20 断面结构略粗糙、不均匀,无杂质,有少量孔洞,表面较细腻 10~15 断面结构粗糙、不均匀,有杂质,有较多孔洞,表面亦粗糙 <10 滋味
Flavor口感酥松、细腻、不粘牙,甜而不腻 16~20 口感较酥松、较细腻、略粘牙,甜而不腻 10~15 口感不酥松、粗糙、粘牙,口味过甜或淡无味 <10 风味
Relish茶香味浓郁,与饼干香味协调,无苦涩味, 16~20 有茶香味,略有苦涩味 10~15 无明显茶香,苦涩味较重 <10 表 3 响应面分析试验结果
Table 3. Design and results of response surface analysis
试验号
Serial numberA超微绿茶粉
添加量
Amount of
ultramicro green
tea powderB黄油
添加量
Amount of
butterC糖粉
添加量
Amount of
powdered
sugarY感官审
评得分
Sensory scores1 0(3%) 0(85%) 0(26%) 85.83 2 −1(2.5%) 0 1(28%) 73.33 3 0 0 0 86.67 4 0 −1(80%) −1(24%) 78.23 5 −1 1(90%) 0 72.50 6 1(3.5%) 0 1 70.67 7 0 0 0 84.67 8 −1 −1 0 75.67 9 0 −1 1 76.13 10 0 1 1 73.03 11 0 0 0 85.83 12 1 −1 0 71.26 13 0 1 −1 76.03 14 1 1 0 70.67 15 1 0 −1 71.17 16 −1 0 −1 73.13 17 0 0 0 87.00 表 4 回归方程的方差分析
Table 4. Analysis of variance of regression equation
方差来源
Source of variance平方和
Sum of square自由度
Degree of freedom均方
Mean squareF值
F valueP值
P value模型
Model617.54 9 68.62 70.84 <0.0001 A 超微绿茶粉
Ultramicro green tea powder14.74 1 14.74 15.22 0.0059 B 黄油
Butter10.26 1 10.26 10.59 0.0140 C 糖粉
Powdered sugar3.65 1 3.65 3.76 0.0935 AB 1.66 1 1.66 1.72 0.2313 AC 0.12 1 0.12 0.13 0.7326 BC 0.20 1 0.20 0.21 0.6614 A2 313.41 1 313.41 323.57 <0.0001 B2 98.94 1 98.94 102.15 <0.0001 C2 118.16 1 118.16 121.99 <0.0001 残差项
Residual6.78 7 0.97 失拟项
Lack of fit3.50 3 1.17 1.43 0.3591 纯误差项
Pure error3.28 4 0.82 总误差项
Cor total624.32 16 相关系数R2 0.9897 校正决定系数Radj2 0.9752 表 5 超微绿茶粉曲奇饼干与普通曲奇饼干的质构参数
Table 5. Texture measurements on ultramicro green tea powder cookie and common cookies
质构参数
Parameter of texture analyzer超微绿茶粉曲奇饼干
Ultramicro green tea powder cookies普通曲奇饼干
Cookies硬度
Rigidity/g578.44±37.93* 467.59±66.92 酥性
Short/(g·s)626.46±67.58 509.60±97.56 *表示同行数据之间差异显著(P<0.05)。
* indicates that values in the same row are with significant differences (P<0.05). -
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