KR102412356B1 - drying method of moringa leaf - Google Patents

Abstract

The present invention relates to a method for drying moringa leaves, and more particularly, to a drying method for moringa leaves that can easily remove foreign substances and can be dried uniformly, thereby increasing marketability.
The drying method of Moringa leaves of the present invention includes a collection step of cutting branches and collecting moringa with leaves and petioles attached, a transport step of transporting the Moringa collected in the collection step into an airtight container, and sealing; A cutting step of removing the moringa from the container and cutting it to a size of 10 to 20 mm, a washing step of washing the cut moringa with water to remove foreign substances, and a drying step of drying the moringa after the washing step; It includes a sealing step of sealing the moringa dried in the drying step in a bag.

Description

Drying method of moringa leaf

The present invention relates to a method for drying moringa leaves, and more particularly, to a drying method for moringa leaves that can easily remove foreign substances and can be dried uniformly, thereby increasing marketability.

Moringa ( Moringa oleifera ) belongs to the family Moringaceae and is a tree reaching a height of 5 to 10 m and is cultivated in Asia, Africa, and Arabia.

Moringa is rich in protein and vitamins, so it has high nutritional value. It has various pharmacological actions such as hyperglycemia, anti-inflammatory and anticancer. , are known to be rich in phytochemicals such as amino acids.

Among the various parts of Moringa, the leaves are rich in β-carotene, protein, vitamin C, and calcium, and are used as antioxidants. Moringa seed extract also contains bioactive substances such as flavonoids, isothiocyanates, glucosinolates, and thiocarbamates. Antioxidant and physiological activity effects of Moringa leaves according to extraction solvents, Kwon Kwon-ri Yoon Kwang-seop, Journal of the Korean Society for Food Storage and Distribution 21(6) 831-837, 2014).

In recent years, as the excellent nutritional value of moringa leaves and the effects of anti-inflammatory and antioxidant ingredients have been scientifically revealed, they are receiving great attention as a new health food. Moringa leaves are mainly used as health supplements such as powder or pills, or as tea. being processed

To process Moringa leaves like this, you need dried Moringa leaves. In addition, when moringa leaves are dried, nutritional content is increased by 2 to 10 times compared to raw leaves. Therefore, moringa is consumed a lot in the form of dried leaves, and the nutritional value varies a lot depending on the drying method.

Conventionally, there is a problem in that it is not easy to remove foreign substances when washing Moringa leaves, and drying is not performed uniformly.

Moringa cleaning methods commonly used do not perform uniform cleaning due to the coating components of Moringa leaves and the characteristics of thin Moringa leaves. In addition, the tip of Moringa does not dry easily compared to other parts, so mold may be easily detected. Excessive raw material condition, inappropriate drying temperature, and improper cleaning and storage methods reduce the marketability of Moringa and consume energy inefficiently.

1. Republic of Korea Patent Publication No. 10-2017-006707: Moringa tea and manufacturing method thereof 2. Republic of Korea Patent No. 10-1981429: Moringa turmeric pill and manufacturing method thereof

The present invention was created to improve the above problems, and since the moringa collected from the branches is cut to a size of 10 to 20 mm to perform washing and drying processes, it is easy to remove foreign substances and uniform drying is possible to increase the commercial value. An object of the present invention is to provide a method for drying Moringa leaves that can be used.

The drying method of Moringa leaves of the present invention for achieving the above object comprises the steps of cutting branches and collecting Moringa while leaves and petioles are attached; a transport step of transporting the moringa collected in the harvesting step into an airtight container; A cutting step of taking out the moringa from the sealed container and cutting it to a size of 10 to 20 mm; a washing step of washing the moringa cut in the cutting step with water to remove foreign substances; a drying step of drying the moringa after the washing step, and a sealing step of sealing the moringa dried in the drying step in a bag.

The drying step is dried at 65 to 70 ℃ and then dried at 45 to 60 ℃.

In the drying step, the moringa is placed on a tray and dried in a drying room, and the tray is coupled to a case of a barrel structure with an open top, a tray accommodated in the case and on which the moringa is placed, and one side of the case. A chamber having an inlet chamber into which hot air is introduced; and a rolling means for reciprocating left and right in the inside, wherein the discharge slits are sequentially arranged along the longitudinal direction of the drying pipe, and any one discharge slit is alternately arranged with an adjacent discharge slit, and the rolling means is A pinion coupled to one side of the drying pipe, a guide rail installed inside the chamber, a rack supported by the guide rail and installed to be slidably movable, and an actuator for reciprocating the rack are provided.

As described above, in the present invention, after collecting moringa with petiole and leaves attached to the branch, the moringa is cut into a size of 10 to 20 mm to perform washing and drying processes. Accordingly, the present invention can remove foreign substances attached to moringa in a short time and can be dried uniformly, thereby increasing marketability, and can be safely dried and stored from various bacteria such as Escherichia coli and mold, and time and cost are also the most efficient to be.

In addition, the present invention can increase the drying efficiency by drying the moringa using a tray.

1 is a block diagram showing step-by-step a method for drying Moringa leaves according to an example of the present invention;
2 is a partially cut-away perspective view showing a tray applied to the present invention;
Figure 3 is a perspective view of the main part of Figure 2,
FIG. 4 is a cross-sectional view of FIG. 2 .

Hereinafter, a method for drying Moringa leaves according to a preferred embodiment of the present invention will be described in detail.

1 to 4, in the drying method of Moringa leaves according to an embodiment of the present invention, a collecting step of cutting branches to collect Moringa while leaves and petioles are attached, and the hairs collected in the collecting step A transport step of transporting the linga in an airtight container, a cutting step of cutting the moringa into a size of 10 to 20 mm after taking out the moringa from the airtight container, a washing step of washing the cut moringa with water to remove foreign substances; , a drying step of drying the moringa after the washing step, and a sealing step of sealing the moringa dried in the drying step in a bag. Let's look at each step in detail.

1. Collection stage

First, collect the moringa from the required area.

The branches of Moringa trees that are being grown are cut and collected whole. The branch has petioles facing each other, and leaves are attached to the petiole. Therefore, the collected moringa has branches, petioles, and leaves attached together.

In this way, since the branches are cut and collected with both the petiole and the leaves attached, labor can be reduced and the collection time can be shortened compared to the case where only the leaves are collected. In addition, when it is put in an airtight container in the transport step to be described later, the effect of dispersing the heat generated by the moringa itself by facilitating air communication in the container can be great, and thus the quality can be improved. The conventional method of collecting only the leaves takes a lot of time, and the Moringa leaves that have been in the container for a long time do not communicate with the air, so yellowing occurs due to the heat generated by itself, further lowering the chlorophyll content and greatly lowering the marketability .

2. Transport phase

Next, put the moringa collected in the collection stage in an airtight container and transport it to the place where the next process is performed.

After collecting moringa, immediately put it in an airtight container and seal it. If the Moringa collected in this way is immediately put in an airtight container and transported, foreign substances will not be attached to it. As an airtight container, a polypropylene or polyethylene bag may be used. An open plastic container that is used a lot in the prior art is not preferable because there is an inflow of foreign substances.

It is desirable that the transport time is less than 1 hour so that the collected moringa can maintain the best quality.

3. Cutting step

Next, the collected moringa is cut.

The moringa transported in an airtight container is taken out from the airtight container and cut into a size of 10 to 20 mm.

When the collected Moringa is washed and dried, it is difficult to clean every corner due to the cohesive force of thin leaves sticking to each other, and it is difficult to remove foreign substances during the washing process due to the coating of the leaves. In addition, the drying time of the leaf, petiole, and branch is different, so if the whole is dried, uniform drying is not achieved.

In order to solve this problem, the present invention cuts the collected moringa into a size of 10 to 20 mm and uses it. If the cut length is less than 12 mm, the active ingredient in the fresh leaf may leak excessively during washing, and the quality is deteriorated due to poor air communication during drying. And if it is cut to a size exceeding 18mm, the efficiency of removing foreign substances during washing decreases, the washing time becomes longer, so the loss of active ingredients occurs excessively, and the cost increases because the complete drying time is prolonged.

4. Washing step

Next, the cut moringa is washed with water to remove foreign substances.

Moringa can be washed repeatedly 2 to 4 times using groundwater or tap water. It is possible to remove foreign substances such as soil or dust adhering to the surface of moringa through washing. In particular, since the moringa of the present invention is cut into a size of 10 to 20 mm and used, foreign substances can be effectively removed. The washing time is suitable for 1 to 3 minutes based on 10 kg, and it is desirable to complete the washing within a time that does not exceed 3 minutes because contact with water for a long time causes the active ingredient to leak.

Table 1 below shows the removal rate of foreign substances during washing according to the cut size. 10 kg of moringa was washed for each size, and it is shown as the average value of the results of 15 repeated experiments.

cut size Removal rate of foreign substances when washing for 2 minutes if not cut 88.8% When cut to a size of 30 mm 96.4% When cut to a size of 15 mm 98.1% When cut to 5mm size 92.4%

As shown in Table 1 above, it can be seen that the foreign material removal rate is the highest when cut to a size of 15 mm.

5. Drying stage

Next, a drying step of drying the moringa is performed.

After washing, sieve the Moringa through a sieve or basket to remove moisture and then dry it.

As the drying method, natural drying, hot air drying, etc. can be used, but it is preferable to use a hot air drying method that is hygienic, uniform and quick drying. In addition, an infrared drying method may be used.

Hot air drying can be performed for 24 to 36 hours. During hot air drying, hot air at 65 to 70° C. may be applied for at least 4 hours, for example, 4 to 20 hours, and then the temperature of the hot air may be dropped to 45 to 60° C. and heat may be applied for the remaining time. In the present invention, since the collected moringa is cut to a size of 10 to 20 mm and dried, it can be effectively dried within a short time. In addition, the initial temperature is set to 65° C. or higher to kill various bacteria.

The drying time according to the cut size is shown in Table 2 below. 10 kg of Moringa for each size was dried to a water content of 6% (w/w) through hot air drying (hot air at 50° C. was applied after 10 hours of hot air at 67° C.), and the average value of the results of 15 repeated experiments is shown.

cut size drying time note if not cut 48.2 hours - When cut to a size of 30 mm 38.5 hours Damage to packaging material during storage When cut to a size of 15 mm 24.8 hours - When cut to 5mm size 26.3 hours Partial yellowing occurs

As shown in Table 2, it can be seen that the drying time is the fastest when cut to a size of 15 mm.

For hot air drying, moringa can be put into a drying room and dried. As an example of a drying room, a plurality of drying racks are installed inside, and trays on which Moringa is placed are vertically spaced apart from each other and arranged in multiple stages. An inlet for introducing hot air into the drying chamber is provided, and an outlet through which hot air passing through the drying chamber is discharged is provided. The hot air introduced into the inlet dries the Moringa on the tray.

Normally, hot air is applied from the top to Moringa placed on the tray, but hot air is not applied from the bottom. In order to solve this problem, the present invention uses the trays shown in FIGS. 2 to 4 .

The illustrated tray includes a case 21 of a tubular structure with an open upper portion, a tray 10 accommodated in the case 21 and on which Moringa is placed, and coupled to one side of the case 21 and hot air inside. A drying chamber 30 having an inlet chamber 31 formed therein, and a plurality of exhaust slits 27 installed inside the case 21 so that one side is exposed to the inside of the chamber 30 and the hot air is discharged are formed. The pipe 25 and the drying pipe 25 are provided with rolling means for reciprocating left and right within a predetermined angle range.

The case 21 has a tubular structure with an open top.

The tray 10 is accommodated in the case 21 . The tray 10 includes a mesh 11 of a net structure, and a support 15 installed in the lower portion of the mesh 11 . Moringa to be dried is placed on the mesh (11). When the tray 10 is installed inside the case 21 , the mesh 11 is located on the drying pipe 25 .

The chamber 30 is coupled to one side of the case 21 . An inlet chamber 31 into which hot air is introduced is formed in the chamber 30 . Although not shown, a hot air supply hose to which hot air is supplied is connected to the side of the chamber 30 . Hot air is introduced into the inlet chamber 31 formed inside the chamber 30 through the hot air supply hose.

A plurality of drying pipes 25 are installed inside the case 21 at regular intervals. One side of the drying pipe 25 is open, and the other side is closed. One side of the drying pipe 25 penetrates one side wall of the case 21 and is exposed to the inside of the chamber 30 . And the other side of the drying pipe (25) passes through the other side wall of the case (21). Each drying pipe 25 is supported on the side wall of the case 21 so as to be rotatable.

A plurality of discharge slits 27 are formed in each drying pipe 25 . Each of the discharge slits 27 is formed long in the front and back along the longitudinal direction of the drying pipe (25). The discharge slit 27 is made long and narrow. The discharge slit of any one of the discharge slits 27 is alternately arranged with an adjacent discharge slit. Since the discharge slits 27 formed at alternate positions are located along a spiral trajectory on the outer peripheral surface of the drying pipe 25, hot air can be discharged at various positions.

The rolling means for reciprocating the drying pipe within a certain angle range includes a pinion 41 coupled to one side of the drying pipe 25, a guide rail 35 installed inside the chamber 30, and a guide rail ( 35) and is provided with a rack 40 that is installed to be slidably movable, and an actuator for reciprocating the rack 40.

A pinion 41 is coupled to one side of the drying pipe 25 exposed to the inside of the chamber 30 . The rack 40 is supported on the guide rail 35 installed on the inner bottom of the chamber 30 . The rack 40 is slidable left and right along the guide rail 35 . One side of the rack 40 is exposed to the outside of the chamber 30 . The rack 40 reciprocates by an actuator.

The motor 45 may be used as the illustrated actuator. A driving gear 47 is coupled to the rotation shaft of the motor 45 installed outside the chamber 30 , and the driving gear 47 is coupled to one side of the rack 40 exposed to the outside of the chamber 30 .

When the motor 45 operates and the driving gear 470 rotates, the rack 40 slides in either direction, and accordingly, the rack 40 and the pinion 41 meshed with the pinion 41 rotate while the drying pipe 25 rotates. The drying pipe 25 also reciprocates while changing the direction according to the rotational direction of the motor 45. The motor 45 can change the rotational direction within the range of 180 to 360°.

When hot air is introduced into the chamber 30 , the hot air moves to the inside of the drying pipe 25 through the open side of the drying pipe 25 , and the hot air introduced into the drying pipe 25 is discharged through a slit. It is discharged to the outside of the drying pipe (25) through (27). And since the drying pipe 25 from which the hot air is discharged is reciprocally rotated in the left and right directions within a certain angle range, the hot air can be uniformly applied to the lower surface of the moringa mounted on the tray 10 .

Unlike the figure, a solenoid valve or a cylinder may be used as an actuator.

6. Sealing step

Next, the moringa dried in the drying step is put in a bag and sealed. A zipper bag can be used as a bag.

The method of drying and storing without cutting as in the prior art deteriorates the quality even at the storage stage, but a dried product with a long branch tears or punctures the bag during distribution and storage, and this causes outside air to flow in and moisture to enter. When rancidity, external odors are introduced, and the air humidity is high, conditions are created for bacteria such as mold to grow. Therefore, the cutting process has a great influence on the quality during storage.

The present invention can effectively block contact with moisture of dried moringa through sealing. The dried moringa stored in this way can be pulverized and used as a powder if necessary.

As described above, the present invention collects moringa with petiole and leaves attached to the branch, cuts moringa, and performs washing and drying processes, so it is easy to remove foreign substances attached to moringa and uniform drying It is possible to increase the productivity.

As mentioned above, the present invention has been described with reference to one embodiment shown in the drawings, but this is merely exemplary, and it will be understood by those skilled in the art that various modifications and equivalent other embodiments are possible therefrom. will be. Accordingly, the true technical protection scope of the present invention should be defined by the technical spirit of the appended claims.

10: tray 21: case
25: drying pipe 27: discharge slit
30: chamber 40: rack
41: pinion 45: motor

Claims (3)

delete delete a harvesting step of cutting branches to collect moringa while leaves and petioles are attached;
a transport step of transporting the moringa collected in the harvesting step into an airtight container;
A cutting step of taking out the moringa from the sealed container and cutting it to a size of 15 mm;
a washing step of washing the moringa cut in the cutting step with water to remove foreign substances;
a drying step of drying Moringa with hot air at 65 to 70° C. and then hot air drying at 45 to 60° C. after the washing step;
Including; sealing step of sealing the moringa dried in the drying step in a bag,
In the drying step, moringa is placed on a tray arranged in multiple stages spaced up and down on a drying rack in a drying room provided with a hot air inlet and a hot air outlet to dry,
The tray includes a case of a barrel structure with an open top, a tray accommodated in the case and on which Moringa is placed, a chamber coupled to one side of the case and having an inlet chamber through which hot air is introduced, and the case; A drying pipe having a plurality of discharge slits installed in the inside of the chamber, one side of which is exposed to the inside of the chamber, and a plurality of discharge slits for discharging hot air to Moringa, and a rolling means for reciprocally rotating the drying pipe from side to side within a certain angle range; ,
The discharge slits are sequentially arranged along the longitudinal direction of the drying pipe, and any one discharge slit is alternately arranged with an adjacent discharge slit and is located along a spiral trajectory,
In the drying step, the hot air is introduced into the chamber and the hot air is discharged through the discharge slit of the drying pipe reciprocating left and right, and the hot air is applied to the lower surface of the Moringa mounted on the tray. How to dry leaves.

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