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Preparation method of frozen baked sweet potatoes

A technology for roasting sweet potatoes and sweet potatoes, which is applied in the field of preparing frozen roasted sweet potatoes, can solve the problems of unguaranteed product hygiene, potential food safety hazards, long processing time, etc., and achieves the advantages of inhibiting retrogradation after gelatinization, being convenient to eat, and being more digestible. Effect

Inactive Publication Date: 2018-06-19
南通瑞隆农产品开发有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Common roasted sweet potato products are made by traditional techniques, product hygiene cannot be guaranteed, and there are major food safety hazards
With the increasing pace of life, consumers' demand for instant food products is growing rapidly, but the existing roasted sweet potato products have long processing time and short shelf life, which cannot meet the needs of consumers

Method used

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  • Preparation method of frozen baked sweet potatoes
  • Preparation method of frozen baked sweet potatoes

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A preparation method of frozen roasted sweet potatoes, comprising the following steps:

[0018] (1) Screening: Preliminary screening of sweet potatoes without pests and diseases, and grading according to size;

[0019] (2) Cleaning: Wash the selected sweet potatoes and drain;

[0020] (3) Baking: (a) Turn on the power and lighting in sequence, set the temperature to 230°C and preheat for 30 minutes, and place the sweet potatoes obtained in step (2) evenly in the trolley while preheating; (b) Preheat After the completion, push the trolley full of sweet potatoes into the oven, adjust the rotation speed to 30 rpm, and start baking the sweet potatoes, which takes 60 minutes; (c) When the baking is finished, turn off the rotary switch, pull the trolley out of the oven and push into the cooling box for cooling;

[0021] (4) Quick-freezing: the sweet potatoes obtained in step (3) are quick-frozen at -80°C for 10 minutes using cabinet-type liquid nitrogen quick-freezing equip...

Embodiment 2

[0026] A preparation method of frozen roasted sweet potatoes, comprising the following steps:

[0027] (1) Screening: Preliminary screening of sweet potatoes without pests and diseases, and grading according to size;

[0028] (2) Cleaning: Wash the selected sweet potatoes and drain;

[0029] (3) Baking: (a) Turn on the power and lighting in sequence, set the temperature to 200°C and preheat for 20 minutes, and place the sweet potatoes obtained in step (2) evenly in the trolley while preheating; (b) Preheat After the completion, push the trolley full of sweet potatoes into the oven, adjust the rotation speed to 40 rpm, and start roasting the sweet potatoes, which takes 90 minutes; (c) When the baking is finished, turn off the rotary switch, pull the trolley out of the oven and push into the cooling box for cooling;

[0030] (4) Quick-freezing: the sweet potatoes obtained in step (3) are quick-frozen at -100°C for 5 minutes using cabinet-type liquid nitrogen quick-freezing equ...

Embodiment 3

[0035] A preparation method of frozen roasted sweet potatoes, comprising the following steps:

[0036] (1) Screening: Preliminary screening of sweet potatoes without pests and diseases, and grading according to size;

[0037] (2) Cleaning: Wash the selected sweet potatoes and drain;

[0038] (3) Baking: (a) Turn on the power and lighting in turn, set the temperature to 250°C and preheat for 40 minutes, and place the sweet potatoes obtained in step (2) evenly in the trolley while preheating; (b) Preheat After the completion, push the trolley full of sweet potatoes into the oven, adjust the rotation speed to 20 rpm, and start roasting the sweet potatoes for 30 minutes; (c) when the baking is finished, turn off the rotary switch, pull the trolley out of the oven and push into the cooling box for cooling;

[0039] (4) Quick-freezing: the sweet potatoes obtained in step (3) are quick-frozen at -50°C for 20 minutes using cabinet-type liquid nitrogen quick-freezing equipment, using...

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Abstract

The invention discloses a preparation method of frozen baked sweet potatoes. The method comprises operation steps as follows: screening, cleaning, baking, quick freezing, packaging, frozen storage anddelivery, wherein in the baking step, a large hot air revolving furnace baking technology is adopted, the baking temperature is 200-250 DEG C, the rotating speed is 20-40 r / min and the baking time is30-90 min; in the freezing step, a liquid nitrogen dispersion refrigeration technology is adopted, and the baked sweet potatoes are quickly frozen at the temperature of subzero 100 DEG C to subzero 50 DEG C for 5-20 min. The invention provides the frozen sweet potatoes and the preparation method thereof. No materials are added, the original taste and flavor of the sweet potatoes are guaranteed, and rich minerals and vitamins contained in the sweet potatoes are not damaged and affected; the baked sweet potato processing technology adopts constant-temperature baking and liquid nitrogen quick cooling modes in the baking and quick freezing processes, retrogradation after starch granule gelatinization of the sweet potatoes is effectively inhibited, the inherent fragrance and taste of the bakedsweet potatoes are kept to the greatest extent, and the product tastes purer and is easier to digest.

Description

technical field [0001] The invention belongs to a food and a preparation method thereof, in particular to a preparation method of frozen roasted sweet potatoes. Background technique [0002] The common baked sweet potato products are made by traditional techniques, so the hygiene of the products cannot be guaranteed, and there are great food safety hazards. With the increasing pace of life, consumers' demand for instant food products is increasing rapidly, but the existing roasted sweet potato products have a long processing time and a short shelf life, which cannot meet the needs of consumers. Contents of the invention [0003] The object of the present invention is to solve the above technical problems and provide a frozen baked sweet potato food which is simple in preparation, safe and hygienic, maintains the original flavor of sweet potato, has good taste, can be stored for a long time, and is convenient to eat. [0004] A kind of preparation method of freezing sweet ...

Claims

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Application Information

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IPC IPC(8): A23L19/10A23B7/055
CPCA23B7/055A23L19/105A23V2002/00A23V2300/20
Inventor 郭宽
Owner 南通瑞隆农产品开发有限公司
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