High-efficiency energy-saving processing method of sweet potato juice
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A high-efficiency, energy-saving, processing method technology, applied in the direction of food science, etc., can solve the problems of sweet potato juice sugar content improvement, different methods, different purposes, etc., and achieve the effects of energy saving, complete enzymatic hydrolysis, and waste reduction
Active Publication Date: 2014-01-22
SDIC ZHONGLU FRUIT JUICE +1
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[0004] After searching, the methods involved in the existing patents have not improved how to improve the sugar content of sweet potato juice. The existing methods mainly involve t
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Embodiment 1
[0028] A processing method of high-efficiency and energy-saving sweet potato juice, the steps are as follows:
[0029] ⑴Material selection: select sweet potatoes for selection, impurity removal and cleaning;
[0030] ⑵Squeeze the sweet potato after being crushed, squeeze out the juice to obtain the sweet potato residue, and collect the juice;
[0031] (3) Carry out high-temperature gelatinization of sweet potato dregs at a temperature of 85-95°C for 20 minutes;
[0032] ⑷Ultrasonic enzymolysis: add а high temperature amylase to sweet potato dregs (sweet potato dregs: amylase=1:0.0025), dilute the enzyme into 5-20% enzyme preparation solution before adding, then add Vc (sweet potato pulp: Vc= 1:0.0007); keeping at 95°C, enzymatic hydrolysis for 0.5 hours, to obtain potato pulp;
[0033] The recommended ultrasonic power is 400-1200W. Ultrasound can make the enzyme and sweet potato pulp fully contact, and the tissue cell membrane or starch chain structure will be damaged to a c...
Embodiment 2
[0046] A processing method of high-efficiency and energy-saving sweet potato juice, the steps are as follows:
[0047] ⑴Material selection: select sweet potatoes for selection, impurity removal and cleaning;
[0048] ⑵Squeeze the sweet potato after being crushed, squeeze out the juice to obtain the sweet potato residue, and collect the juice;
[0049] (3) Carry out high-temperature gelatinization of sweet potato dregs at a temperature of 85-95°C for 20 minutes;
[0050] (4) Enzymolysis: Add a high-temperature amylase to the sweet potato dregs (sweet potato dregs: amylase = 1:0.0027), dilute the enzyme into a 5-20% enzyme preparation solution before adding, and then add Vc (sweet potato pulp: Vc = 1 :0.00065); keep 95 DEG C, enzymatic hydrolysis for 0.9 hours, obtain potato pulp;
[0051](5) Squeeze: Add wood fiber into the enzymatically hydrolyzed potato pulp. The amount of wood fiber added is 0.5-1.5wt% of the weight of the sweet potato. After adding, squeeze. Use the fruit...
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Abstract
The invention relates to a high-efficiency energy-saving processing method of a sweet potato juice, which comprises the following steps: peeling the raw material sweet potatoes, crushing, heating, and gelatinizing to obtain a sweet potato pulp, carrying out high-temperature enzymolysis on the sweet potato pulp, pressing the sweet potato pulp to obtain a sweet potato juice and peel trimmings, and carrying out after-treatment on the sweet potato juice to obtain the sweet potato juice finished product. The method is characterized in that the sweet potatoes are crushed and extruded, the extruded sweet potatoes are heated and gelatinized, and the extruded sweet potato juice is used as spray water in the pressing process; and wood fibers is mixed and added in the sweet potato pulp pressing process. According to the method, the sweet potatoes are directly extruded after being crushed, and the extruded sweet potato juice is used as spray water for gelatinization, so that no water is additionally added, thereby saving the time and energy consumption; and meanwhile, the wood fibers, which have smooth surface and have not burrs, are added in the sweet potato pressing process and can fully display the filtration action in the pressing process, so that the juice in the sweet potato trimmings can be sufficiently extruded, thereby enhancing the juice yield of the sweet potato trimmings.
Description
technical field [0001] The invention belongs to the field of fruit juice pressing methods, in particular to a high-efficiency and energy-saving processing method of sweet potato juice. Background technique [0002] The production process of conventional hot-pressed sweet potato juice is: use fresh sweet potatoes as raw materials, form a slurry through peeling, crushing, high-temperature gelatinization, etc., and then obtain potato pulp through pressing, saccharification, etc., and then obtain finished potato juice through filtration and other processes. juice. When sweet potatoes are pressed, the skin dregs will be separated. Generally, the skin dregs content is as high as 40% to 55%. Among them, because they contain a certain amount of impurities such as starch, pectin, and pigments, they are usually only used as fertilizers in the prior art, and some of them have been processed. It is used as feed, and the active ingredients are not fully utilized. [0003] The current s...
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