CN103673509A - Variable-temperature-based method for drying sweet potato leaves - Google Patents
Variable-temperature-based method for drying sweet potato leaves Download PDFInfo
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- CN103673509A CN103673509A CN201310563694.5A CN201310563694A CN103673509A CN 103673509 A CN103673509 A CN 103673509A CN 201310563694 A CN201310563694 A CN 201310563694A CN 103673509 A CN103673509 A CN 103673509A
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Abstract
The invention discloses a variable-temperature-based method for drying sweet potato leaves. The method comprises the steps that a drying chamber is preheated to reach the temperature of 35 DEG C, and drying discs (6) are placed to drying partition plates (10) which are arranged at intervals of 20cm; a venting fan (12) is started to ventilate the drying chamber through a vent hole (11); the heating rate is that 1-3 DEG C is risen per hour, the sweet potato leaves are dried for 3 hours at the constant temperature of 45 DEG C, and moisture removing holes and an exhaust fan are opened; the temperature is risen, the sweet potato leaves are dried for 3-4 hours, and the moisture removing holes (8) and an exhaust fan (9) are closed after 1-2 hours; the temperature is risen, and the sweet potato leaves are dried at the temperature of 65 DEG C for one hour.
Description
Technical field
The present invention relates to crops storage field, particularly a kind of method of the oven dry pachyrhizus leaf based on alternating temperature.
Background technology
Pachyrhizus leaf fibre content is high.Every 100 g of pachyrhizus leaves, heat only has 30 kilocalories, and dietary fiber has 3.1 g.Pachyrhizus leaf fibre matter is many, and cellulosic is high, except being with in vitro inner cholesterol.Mix chicken feed, can improve the cholesterol of eliminating in chicken body, improve the quality of egg or meat.Pachyrhizus blade should toast after sending into drying chamber continuously, until dry, heating can not be interrupted, and temperature can not be fluctuated, and easily quality declines.
Summary of the invention
In order to improve the quality of drying pachyrhizus leaf, the invention provides a kind of method of the oven dry pachyrhizus leaf based on alternating temperature.
Technical scheme: pre-heating drying room temperature is raised to 35 ℃, the oven dry of drip pan (6) being put into hothouse (7) cuts off (10) above, and the spacing of drying partition (10) is 20 centimetres; Opening draught fan (12) ventilates by air vent (11); Heating rate remains on 1 hour and heats 1～3 ℃; 45 ℃ of constant temperature toast 3 hours, open moisture discharging opening or ventilating fan; Heat up, 55 ℃ of constant temperature toast 3～4 hours, and moisture discharging opening (8) and humidity discharging fan were closed after (9) 1～2 hours; Heat up, 65 ℃ of constant temperature toast 1 hour.
Beneficial effect: the pachyrhizus leaf water content that this method is dried is no more than 3%; Pachyrhizus leaf keeps original nutriment and natural colour.
Accompanying drawing explanation
Fig. 1 is the structural representation of drying plant of the present invention.
The specific embodiment
below in conjunction with accompanying drawing, the present invention is elaborated.
Pre-heating drying room temperature is raised to 35 ℃, and the oven dry of drip pan (6) being put into hothouse (7) cuts off (10) above, and the spacing of drying partition (10) is 20 centimetres; Opening draught fan (12) ventilates by air vent (11); Heating rate remains on 1 hour and heats 1～3 ℃; 45 ℃ of constant temperature toast 3 hours, open moisture discharging opening or ventilating fan; Heat up, 55 ℃ of constant temperature toast 3～4 hours, and moisture discharging opening (8) and humidity discharging fan were closed after (9) 1～2 hours; Heat up, 65 ℃ of constant temperature toast 1 hour.
Claims (1)
1. a method for the oven dry pachyrhizus leaf based on alternating temperature, comprises the following steps: pre-heating drying room temperature is raised to 35 ℃, and the oven dry of drip pan (6) being put into hothouse (7) cuts off (10) above, and the spacing of drying partition (10) is 20 centimetres; Opening draught fan (12) ventilates by air vent (11); Heating rate remains on 1 hour and heats 1～3 ℃; 45 ℃ of constant temperature toast 3 hours, open moisture discharging opening or ventilating fan; Heat up, 55 ℃ of constant temperature toast 3～4 hours, and moisture discharging opening (8) and humidity discharging fan were closed after (9) 1～2 hours; Heat up, 65 ℃ of constant temperature toast 1 hour.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310563694.5A CN103673509A (en) | 2013-11-14 | 2013-11-14 | Variable-temperature-based method for drying sweet potato leaves |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310563694.5A CN103673509A (en) | 2013-11-14 | 2013-11-14 | Variable-temperature-based method for drying sweet potato leaves |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103673509A true CN103673509A (en) | 2014-03-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310563694.5A Pending CN103673509A (en) | 2013-11-14 | 2013-11-14 | Variable-temperature-based method for drying sweet potato leaves |
Country Status (1)
| Country | Link |
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| CN (1) | CN103673509A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105135824A (en) * | 2015-09-08 | 2015-12-09 | 昆明理工大学 | Lepidium meyenii walp temperature-varied drying method |
-
2013
- 2013-11-14 CN CN201310563694.5A patent/CN103673509A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105135824A (en) * | 2015-09-08 | 2015-12-09 | 昆明理工大学 | Lepidium meyenii walp temperature-varied drying method |
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| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140326 |
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| WD01 | Invention patent application deemed withdrawn after publication |