Optimized Formulation of a Chewable Candy Containing Loquat Flower Tea
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摘要:
目的 利用枇杷花茶特色资源制备一种具有止咳化痰作用的凝胶软糖产品。 方法 通过单因素试验比较枇杷花茶冲泡质量浓度、明胶、柠檬酸、木糖醇添加量对凝胶软糖的模糊感官综合评分和硬度的影响,确定凝胶软糖的评价指标;在单因素试验基础上,设计枇杷花茶冲泡质量浓度、木糖醇、柠檬酸为自变量的3因素3水平的响应面试验,共进行17组处理,从而确定枇杷花凝胶软糖的最优工艺参数。 结果 单因素结果显示:模糊感官综合评分作为评价凝胶软糖的指标较科学,明胶的适宜添加量为12%;响应面试验确定枇杷花凝胶软糖的最优工艺配方为:枇杷花茶冲泡质量浓度17.7 g·L−1、木糖醇13.85%、柠檬酸1.25%,该条件下制备的枇杷花凝胶软糖的模糊感官综合评分为91.23分,与模型理论值接近。 结论 确定枇杷花凝胶软糖的最佳工艺配方(以质量分数计)为枇杷花茶29.85%(冲泡质量浓度17.7 g·L−1)、麦芽糖浆28.4%、木糖醇13.85%、冰糖14.55%,柠檬酸1.25%,明胶12%,分子蒸馏单苷酯0.1%。该研究制作的枇杷花凝胶软糖将为枇杷花新资源食品的深加工利用提供新思路。 Abstract:Objective Formulation of a chewable candy containing loquat flower tea for cough relief and phlegm reduction was optimized. Method Formulation on loquat flower tea, xylitol, citrate acid, and gelatin for the candy product was tested in a single factor experiment using hardness measurement and sensory multiple-scoring as the evaluation criteria. It was optimized using a response surface method with 3 factors and 3 levels. Result The sensory evaluation suggested the appropriate gelatin addition to be 12%, and the response surface experiment optimized the formula to include 17.7 g·L−1 loquat flower tea, 13.85% xylitol, and 1.25% citrate acid. A sensory score of 91.23 agreeing with the predicted value by the model was obtained on the finished product. Conclusion The finalized formulation for the chewable candy consisted of 29.85% of loquat flower tea (i.e., a concentration at 17.7g·L−1), 28.4% of maltose syrup, 13.85% of xylitol, 14.55% of sugar, 1.25% of citrate acid, 12% of gelatin, and 0.1% of glyceryl monostearate. -
Key words:
- loquat flower /
- chewable candy /
- response surface /
- sensory multiple-scoring /
- xylitol
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表 1 Box-Behnken响应面试验设计因素与水平
Table 1. Levels and codes of factors used in Box-Behnken experiment
因素 Factor 水平 Level −1 0 1 A冲泡质量浓度
Mass Concentration of loquat flower tea/(g·L−1)10.00 20.00 30.00 B木糖醇 Xylitol/% 5.68 11.36 17.04 C柠檬酸 Citrate Acid/% 0.90 1.20 1.50 表 2 枇杷花凝胶软糖的评分标准
Table 2. Scoring system for sensory quality of chewable candy
项目
Items评分标准
Score Standards标准描述
Description of standards外观形态 Appearance 优 Excellent 棕黄色或淡黄色,半透明,块形完整,表面光滑;
Brownish or light yellow in color, translucent, unblemished smoot surface.良 Good 棕黄色或淡黄色,半透明,块形较完整,表面较光滑;
Brownish or light yellow in color, translucent, nearly perfect and smooth surface.中 Average 颜色较深,透明度较差,块形较完整,表面略有裂纹或皱皮;
Darker in color, low transparency, nearly perfect but slightly cracked or wrinkled surface.差 Bad 颜色过深,不透明,块形不完整,表面有裂纹或皱皮;
Dark in color, opaque, cracked or wrinkled surface.风味 Flavor 优 Excellent 酸甜味适中,特有的枇杷花香味;
Moderate sweet and sour tastes with characteristic loquat flower aroma.良 Good 酸甜味略浓或淡,枇杷花香味稍淡或稍浓;
Slightly strong or weak sour and sweet tastes with either strong or weak loquat flower aroma.中 Average 酸甜味较浓或淡,枇杷花香味过浓或不足;
Strong or weak sour and sweet tastes with too strong or too weak a loquat flower aroma.差 Bad 酸甜味不足或过浓,令人不悦的香味;
Overly strong or weak sour and sweet tastes with unpleasant odor.咀嚼性 Chewiness 优 Excellent 软硬适中;
Moderate chewable texture.良 Good 略软或硬;
Slightly too soft or too hard.中 Average 较软或较硬;
Too soft or too hard.差 Bad 过软或过硬;
Overly soft or hard.弹性 Elasticity 优 Excellent 弹性好;
Excellent elasticity.良 Good 弹性较好;
Good elasticity.中 Average 弹性中等;
Average elasticity.差 Bad 弹性差;
Poor elasticity.表 3 响应面试验设计与结果
Table 3. Design and results of response surface experiment
序号
No.因素 Factor 感官综合评分
Sensory multiple-scoringA B C 1 0.000 0.000 0.000 89.25 2 0.000 −1.000 −1.000 73.50 3 −1.000 −1.000 0.000 75.50 4 0.000 0.000 0.000 88.50 5 1.000 0.000 1.000 81.00 6 0.000 0.000 0.000 90.50 7 −1.000 0.000 1.000 81.25 8 0.000 0.000 0.000 91.50 9 1.000 1.000 0.000 80.50 10 0.000 −1.000 1.000 82.75 11 1.000 −1.000 0.000 76.25 12 −1.000 0.000 −1.000 79.50 13 0.000 0.000 0.000 90.75 14 0.000 1.000 1.000 83.75 15 1.000 0.000 −1.000 70.50 16 0.000 1.000 −1.000 80.25 17 −1.000 1.000 0.000 88.75 表 4 回归方程系数显著性分析
Table 4. Variance and significance of quadratic polynomial regression equation
方差来源
Source平方和
Sum of squares自由度
df均方
Mean squareF值
F valueP值
P value显著性
Significance模型 Model 652.00 9 72.44 27.98 0.0001 ** A 35.07 1 35.07 13.55 0.0079 ** B 79.70 1 79.70 30.78 0.0009 ** C 78.13 1 78.13 30.18 0.0009 ** AB 20.25 1 20.25 7.82 0.0266 * AC 19.14 1 19.14 7.39 0.0298 * BC 8.27 1 8.27 3.19 0.1171 A2 147.81 1 147.81 57.10 0.0001 ** B2 64.87 1 64.87 25.06 0.0016 ** C2 157.32 1 157.32 60.77 0.0001 ** 残差 Residual 18.12 7 2.59 失拟性 Lack of fit 12.30 3 4.10 2.81 0.1715 纯误差 Pure error 5.83 4 1.46 总误差 Core total 670.12 16 R2 0.9730 R2Adj 0.9382 R2Pred 0.6928 注:**:差异极显著(P<0.01),*:差异显著(P<0.05)。
Note: ** and * mean significant differences at 0.01 and 0.05 level, respectively. -
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