JPS5841828B2 - Fruit juice recovery and production method - Google Patents

Description

[Detailed description of the invention] The present invention relates to a method for collecting and producing fruit juice.

Generally, the production of fruit juice from citrus fruits such as mandarin oranges has conventionally been carried out as shown in FIG.

That is, the mandarin oranges used as raw materials are sent to the peel separation step 1,
Here, the mandarin orange is crushed using a juicer and the outside of the fruit juice and the outside of the pericarp are separated.

The outside of this fruit juice contains fibrous components such as endothelium, and the outside of this fruit juice is sent to the finisher step 2, where it is filtered.

In this finisher step 2, fibers are removed from the outside of the fruit juice and the fruit juice becomes a product.

The fibrous material is then sent to recovery step 3.

Here, the remaining fruit juice and fibrous components are separated using a centrifuge and the fruit juice is recovered.

Thereafter, it is sent to a concentration step 4 together with the fruit juice, where it is concentrated and sent to a cooling step 5.

In the cooling step 5, the concentrated fruit juice is cooled and frozen for preservation.

In the above fruit juice manufacturing process, a centrifuge is used in the recovery step 3 to remove the fibrous content, so it is difficult to completely recover the fruit juice, and some of the juice is absorbed by the fibrous content. It will be removed along with the quality.

That is, after the peel separation step 1, the fruit juice contains 100 raw mandarin oranges.
However, after recovery process 3, the fruit juice is 46%, which is a decrease of 7%, but this 7%
Of this, about 0.7% is fiber and 6.3% is fruit juice.

However, conventionally, the fiber content removed in finisher 1 step 2 and recovery step 3 is used without recovering the fruit juice contained in it (it is used for feed, etc., or a part is made into jam, or it is centrifuged again after adding enzymes. The juice was either collected in a separator or discarded.

The present invention has been made in view of the above circumstances, and its purpose is to recover fruit juice from the fibers removed in the finisher step and recovery step when producing fruit juice from citrus fruits such as mandarin oranges. The purpose of the present invention is to provide a recovery manufacturing method.

Next, an embodiment of the present invention will be described with reference to FIG.

In the figure, the same steps as those shown in FIG. 1 are designated by the same reference numerals, and their explanations will be omitted.

In the present invention, a filter aid such as diatom or perlite is added to and mixed with the fibrous material removed in each step of the finisher step 2 and recovery step 3, and the mixture is sent to the compression step 6 where it is compressed. squeeze out the juice.

The reason why a filter aid is added and mixed at this time is that if the juice is squeezed using only the fibrous content, the outflow path of the fruit juice will be blocked by the fibrous content and the juice will be absorbed by the fibrous content again, so no matter how much pressure is used, This is because it is difficult to squeeze out the juice even when squeezed.
By using a filter aid, an outflow path for fruit juice is formed,
Through this outflow path, the fruit juice is efficiently squeezed out without being reabsorbed by the fibrous components.

Although the fruit juice squeezed out in this manner contains a small amount of filter aid, it is sent to a removal step 7 where the filter aid is removed.

A centrifugal separator, a filter, etc. are used in this removal step 1.

The fruit juice from which the filter aid has been removed is sent to a concentration step 4 together with the juice from the recovery step 3, where it is concentrated, and then sent to a cooling step 5, where it is cooled and stored frozen for preservation. .

FIG. 3 shows a cross section of an example of a dewatering device used in the squeezing process 6, and 8 in the figure is a cylindrical housing part, the openings at both ends of which are closed by pressurizing lids 9 and 10. It is being

One pressurizing cover 9 is connected to the piston 1 of the hydraulic cylinder 11.
The hydraulic cylinder 11 is operated to compress the fibrous material supplied into the container 8 with the other pressurizing lid 10.

Both pressurizing lids 9 and 10 are provided with an air supply pipe 13 and a discharge pipe 14, respectively, and a large number of through holes 15 are bored in the pressurizing surfaces of both pressurizing lids 9 and 10. At the same time, a filter cloth 16 is attached.

Note that the discharge pipe 14 is connected to a vacuum pump via a water separation tank (not shown).

Then, the fibrous material 18 mixed with the filter aid is supplied into the accommodating section 8 from the processed material inlet 17 provided on the side wall of the accommodating section 8, and the fibrous material 18 is poured into the pressurizing lid 9 and 10. Upon squeezing, the juice squeezed out from the fibrous component 18 passes through the outflow path formed by the filter aid and is taken out through the filter cloth 16 and the through hole 15 to the outside via the discharge pipe 14.

At this time, since air is sent through the air supply pipe 13, the fruit juice can be collected smoothly.

Next, specific examples of the present invention will be explained.

When 10 kg of mandarin oranges was prepared as a sample and fruit juice was produced from it according to steps 1 to 3 shown in Fig. 2, the result was 4.6
Yu fruit juice was obtained, and 7001% of the fibrous content was removed in the finisher step 2 and recovery step 3.

When 7001 diatoms were added and mixed with this fibrous component 7001 and squeezed using a dehydrator as shown in FIG. 3, 62.6 y of fruit juice was recovered.

The total weight of this collected fruit juice is 4.6 kg + 0.6
26kg = 5.226kg, and in the end, the recovery rate of juice from the total amount of mandarin oranges was about 52%, compared to the conventional method (about 46%).
It is clear that this is an improvement over the case of .

As explained above, according to the present invention, in order to recover fruit juice from fibrous coupons that were conventionally used as feed or discarded, the recovery rate of fruit juice is increased when producing fruit juice from citrus fruits such as mandarin oranges. The production cost of fruit juice can be reduced significantly.

In addition, since a filter aid is added when recovering fruit juice from fibrous material, the fruit juice recovery operation can be carried out efficiently.Furthermore, the filter aid mixed into the fruit juice can be removed after the fruit juice is recovered using the filter aid. Therefore, it can be safely served as a drink.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing a conventional fruit juice manufacturing process, FIG. 2 is a block diagram showing a fruit juice manufacturing process of the present invention, and FIG. 3 is a sectional view of a dehydrating device used in the fruit juice manufacturing method of the present invention. 1...Pericarp separation process, 2...Finisher 1 process, 3...Collection process, 6...
Squeezing step, 7... Removal step.

Claims (1)

[Claims] 1. In a method of separating citrus fruits such as mandarin oranges into the outside of the fruit juice and the outside of the fruit skin, and collecting the fruit juice from the outside of the fruit juice using a separation device such as a centrifuge, the fruit juice residue separated when the fruit juice is collected from the outside of the fruit juice. A filter aid such as diatomaceous earth is added to the mixture and the juice is squeezed to separate the remaining fruit juice from the fruit juice residue.
A method for recovering and producing fruit juice, which further comprises removing a filter aid mixed into the fruit juice during the squeezing, and recovering the fruit juice from the fruit juice residue as well.