冻干水果月饼加工工艺技术

Processing Technology of Freeze-dried Fruit Moon Cake

为解决传统工艺水果月饼水果含量低、添加剂多和营养成分被破坏的缺点,首次将真空冷冻干燥技术应用于水果月饼中,开发出冻干水果月饼,并在单因素实验的基础上,选取冻干果肉、黄油、牛奶添加量及常温冰皮配方作为影响因素进行4因素3水平的正交试验,以确定冻干水果月饼的最佳工艺参数,同时分析了冻干水果月饼的营养特性。结果表明:当冻干果肉1 500 g、黄油28 g、牛奶8 g、常温冰皮配方3 310 g (冰皮粉1 550 g、麦芽糖醇600 g、斑斓糖醇650 g、白奶油500 g、增稠剂10 g)时,产品的感官评分最高。影响产品感官评分的主次顺序为冻干果肉>常温冰皮配方>牛奶>黄油。验证结果表明,该工艺下产品的感官评分为96. 2,其中果糖5. 8 g/100 g、β-胡萝卜素1. 34 mg/100 g、维生素A 30. 5μg/100 g、维生素C 4. 62 mg/100 g、维生素E 2. 042 mg/100 g,产品在加工过程中营养保留率高,并且还具有脂肪含量低(6. 3 g/100 g)的优点,同时,产品的酸价和过氧化值均低于月饼国家标准的限量。冻干水果月饼是一款水果含量高、营养和健康的月饼。

In order to solve shortcomings of traditional fruit moon cakes with low fruit content,high use of additives and destruction of nutrients,vacuum freeze-drying technology to make fruit moon cakes was firstly applied,and then freeze-dried fruit moon cakes were developed. Based on single factor experiments,freeze-dried pulp addition,butter addition,milk addition and ice skin formula were chosen as four influencing factors. Four-factor and three-level orthogonal experiments were carried out to determine optimal process parameters of freeze-dried fruit mooncakes,and the nutrient characteristics of freeze-dried fruit mooncakes were analyzed. Results showed that when freeze-dried pulp 1 500 g,butter 28 g,milk 8 g,ice skin 3 310 g ( ice skin powder 1 550 g,maltitol 600 g,canthaxol 650 g,white cream 500 g,thickener 10 g),the product could reach the highest sensory score. The primary and secondary order affecting sensory score of the product was freeze-dried pulp > normal temperature ice skin formula > milk > butter. The verification results showed that the sensory score of the product under the process was 96. 2,of which fructose 5. 8 g/100g,β-carotene 1. 34 mg/100g,vitamin A 30. 5μg/100g,vitamin C 4. 62 mg/100g,vitamin E 2. 042 mg/100g. The product has high nutrient retention rate during processing and also has the advantage of low fat content ( 6. 3 g/ 100g). At the same time,the acid value and peroxide value of the product are much lower than the national standard of moon cake. Freeze-dried fruit mooncake is a high fruit content,nutritious and healthy mooncake.