Hawthorn freeze-dried whole fruit and preparation method thereof
A hawthorn and freeze-drying technology, which is applied in the field of food processing, can solve the problems of nutrient content of raw materials, loss of active ingredients, reduction of nutrition, drug efficacy and active ingredients, and single form of processed products, so as to avoid shrinkage, dryness and good appearance Quality, good crispy effect
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Embodiment 1
[0020] Take fresh hawthorn (the variety is Xinglong) as the raw material, and measure the various indicators of the fresh hawthorn raw material according to the following methods:
[0021] Moisture determination method: drying method. Specifically: accurately weigh 2-10g of the sample, place it in a covered weighing bottle that has been dried, cooled and weighed to constant weight, move it into a normal pressure oven at 95-105°C, open the cover and bake for 2-4 hours, then take it out. Covered and placed in a desiccator to cool for 0.5h and then weighed. Weigh after baking for another hour. Repeat this operation until the mass difference between the two times before and after does not exceed 2mg, which is the constant weight after drying, and the water content = (fresh weight (weight before drying) - constant weight after drying) / fresh weight.
[0022] Determination method of total sugar: determine the total sugar content according to the national standard GB6194-86 Determin...
Embodiment 2
[0046] Embodiment 2, hawthorn freeze-dried whole fruit
[0047] Take fresh hawthorn (the variety is Dajinxing) as the raw material, and carry out detection according to the method described in Example 1, and the obtained results are shown in Table 3:
[0048] Table 3. Index determination results of fresh hawthorn
[0049] nutrient content
fresh sample
Moisture content of fresh sample (%)
75.02
Total sugar (%)
7.9
Vc (mg / 100g)
1.28
Acid value(%)
3.73
protein(%)
0.78
Total flavonoids (%)
0.057
[0050] Prepare hawthorn freeze-dried whole fruit according to the following method:
[0051] Select fresh hawthorn raw materials, remove the inferior quality and impurities, wash the hawthorn fruit, remove the core, and drain for later use;
[0052] Pack the dried hawthorn fruits into trays, and the tray weight is 3.5kg / m 2 , after gradually cooling down for 1.75 hours;
[0053] Pre-f...
Embodiment 3
[0065] Embodiment 3, hawthorn freeze-dried whole fruit
[0066] Take fresh hawthorn (the variety is Dajinxing) as the raw material, and carry out detection according to the method described in Example 1, and the obtained results are shown in Table 5:
[0067] Table 5. Index determination results of fresh hawthorn
[0068] nutrient content
fresh sample
Moisture content of fresh sample (%)
74.10
Total sugar (%)
7.5
Vc (mg / 100g)
1.15
Acid value(%)
3.50
protein(%)
0.65
Total flavonoids (%)
0.051
[0069] Prepare hawthorn freeze-dried whole fruit according to the following method:
[0070] Select fresh hawthorn raw materials, remove the inferior quality and impurities, wash the hawthorn fruit, remove the core, and drain for later use;
[0071] Pack the dried hawthorn fruit into trays, and the tray weight is 4.5kg / m 2 , after gradually cooling down for 2 hours;
[0072] Pre-freez...
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