JPS59166053A - Disposition of peels containing fruit pulp - Google Patents

Abstract

PURPOSE:Fruit peels containing pulps are beatened in an aqueous medium under high pressure to effect homogenization, thus utilizing the parts which have been unused in fruits as a fibrous substance for adding to food products. CONSTITUTION:Peels of apples, pears, grapes or other fruits or juice squeezing waste, which have fruit pulps sticking to the peels, are cut into pieces and made into a slurry together with the same or more amount of water. The resultant slurry is homogenized by beating with a high pressure of over 250kg/cm<2>. The homogenization is effected by jetting it through orifices of small diameter with a high pressure to collide the jet against the wall. The process is repeated to make the solid into fine pieces, finally dispersion.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for processing unused portions of fresh fruit, and more specifically, the pulp and the pericarp, which is present in a large amount, are finely pulverized and dried to form a fiber-reinforced food additive. It relates to a processing method suitable for

In recent years, the number of patients with diseases such as arteriosclerosis, myocardial infarction, diabetes, and cancer has been increasing, but this is correlated with the decrease in the amount of fiber in the food intake due to changes in eating habits and the avoidance of processed foods. It is said that there is. Eating high-fiber foods is particularly effective in preventing and treating diseases of the digestive system and improving obesity, but in general, high-fiber foods, including fiber-fortified foods, are not tasty, expensive, or , it is difficult to make effective use of it as it is unsuitable as a staple food.

250'<9 in aqueous medium using purified wood pulp as raw material
It is homogenized by viscous beating under high pressure of / crft or higher,
A method for microfibrillating cellulose fibers has recently been discovered. This method is described in Japanese Patent Application Laid-open No. 56-000801.
The cellulose obtained by this method is finely divided and has a smooth texture, indicating that it can be used as a food additive. However, keratinization occurs during the drying process of dehydrating and drying this aqueous dispersion of microfibrillated cellulose, and it is difficult to redisperse it using normal methods. There is a control exhibition that can only be applied to N.

Instead of using refined pulp, the inventor beats the skins of fruits such as peaches and loquats in a similar manner, homogenizes them, dehydrates them, and then dehydrates them. He acknowledged that he would be able to obtain something that could be used and worshiped as a shrine. The reason why keratinization does not occur is that the cellulose contained in fresh fruit has a shorter fiber length and lower fiber strength than that of wood bulbs.
Possible reasons include that sugars contained in the pericarp prevent the association of cellulose. However, the product obtained by this method of beating the pericarp is not superior in quality compared to simply drying and pulverizing the pericarp, considering the labor involved in the processing process. As food additive fibers made from the pericarp, there is already commercially available pulverized product obtained by drying the soft inner fibers between the outer and outer skins of citrus fruits (manufactured by Grinfin, Inc., USA).

The peels that are produced in large quantities in the manufacturing process of processed foods such as canned fruits, juices, and fruit drinks from fresh fruits are those of citrus fruit.
It can be used in the production of pectin, etc., and its endothelium has many uses as mentioned above. On the other hand, in the case of fruits such as loquats and peaches where only the pericarp part can be easily separated, the number of stages in which it is produced is small, and it is unrealistic to collect and reuse it. On the other hand, apples, pears, grapes, etc., have a large amount of 20 to 30% or more of fresh fruits, and there are fruits in which a large amount of pulp is attached together with the true peel and separated. These materials can be collected in a sufficient amount, and producing fibers for food additives from them is also useful from the standpoint of effective recycling of waste materials.

The apples, pears, grapes, etc. mentioned above are peeled or squeezed, and the pulp that is attached to them is larger than the true peel, and it is difficult to separate them from each other. The dried fruit skin is generally flexible and cannot be ground unless it is freeze-dried.This is because the pulp contains a lot of sugar, and the sugar further absorbs water. This is because they are adsorbed and exhibit a synergistic plasticizing effect.

The present inventor shreds such pulp band and peel, adds an equal or more amount of water to make a slurry, and makes a slurry of at least 250 kg,
It has been found that by beating at a high pressure of /c, 4 or more, homogenizing, dehydrating, and drying, it can be pulverized into a fine powder and converted into a fiber that can be used as a food additive. This homogenization method involves adding water to the fruit skin with pulp to make a slurry, passing it through a small-diameter orifice at high speed under high pressure, colliding with the container wall, decelerating it, and applying shearing force.
By repeating this process, the solid content is finely dispersed. In the case of refined pulp, more than 20 cycles are necessary to obtain sufficient homogenization, while in the case of pericarp, a few cycles are sufficient.

The solid content beaten by the above operation has σ) dispersion stability in water, but this is due to the synergistic effect of coexistence 1-filtrate, and the water absorption property of the fiber itself is low in the use of purified water. Since it is not as thick as the processed material of the valve, the resulting suspension can be deliquified by centrifugal dehydration, filter press, etc., and it is obtained as a wet powder with a moisture content of approximately 100%. You can do something.

During this water addition, beating, and deliquescence process, most of the low-molecular-weight sugars such as fructose and glucose contained in the fruit pulp, as well as water-soluble bitter components, pigments, and enzymes contained mainly in the fruit skin, are removed. Be it. The resulting wet powder can be made into a fine powder with a water content of 15% or less by a normal drying method, and can be used as a dedigestible fiber for food additives. In addition to cellulose, the ingredients are thought to contain high-molecular polysaccharides, so they do not affect the taste of foods to which they are added. In terms of ingredient display, since the ingredients are originally edible, there is little discomfort for consumers.

In carrying out the present invention, some modifications may be necessary depending on the characteristics of the starting materials. For example, a pear has a hard stone 6w in its skin.
Since it has I cells, once the slurry containing the pericarp is heated to 50%
Preliminarily homogenized at a pressure of 250 kg/c, i or less, once taken out from the homogenizer, stone cells were removed by the method disclosed in JP-A No. 55-102379, and then at a pressure of 250 kg/c4 or more. It is desirable to homogenize at high pressure.

The present invention will be explained below with reference to Examples.

Example 1 The skin was peeled from 1000 kg of Kunimitsu apples, and the pulp band and peel were 2
Obtained 10 kg. This pericarp is shredded into approximately I Can square pieces. t with 250 kg of O]% ascorbic acid aqueous solution
'lo 4Lt6YL-(ra morning 1j+ql was fed into a homogenizer and circulated four times at a pressure of 500 kg/c,,i.

The resulting homogenized suspension was treated with a filter press to remove approximately 420 kg of liquid as F liquid, and the wet solid content, which is an R filtration device, was dried under reduced pressure at room temperature to form a fine powder containing 12% moisture. Obtained 35 kg.

Bread was prepared by adding this finely ground apple peel. The composition of the raw materials is as follows.

Strong flour 700g Thin blade flour 1 soy Finely ground apple peel 150g Yeast 25.9 Sugar 50.9 servings
Salt 25.9 Toning oil 60,! 7 water
700.19 Mix according to the usual method, perform a second fermentation at 28°C for 2 hours, degassing, and then mature at 28°C for 8 hours, then a secondary f'l = t at 37°C for 40 minutes. , and baked for 60 minutes at about 230°C.

The state of fermentation and appearance after baking were good, and the taste test showed that the texture was closer to white bread than to regular black bread.

Example 2 32 kg of skin from 100 kg of Prauea grapes
I got it. Supplied to Mβ8 along with 40 kg of water to a homogenizer made by ω Shinjiru Co., Ltd., and 500 kg/, 4yyj
A homogenized suspension of grape skins was obtained. 4. Processed in a filter press to remove 55 kg of liquid and dry the remaining wet solids to give a powder containing 10% moisture.4. , 1 kg was obtained.

This grape is made of 1/1 sponge cake with fine powder added.
accomplished. The composition of the raw materials is as follows.

Flour 150g Sand
Sugar 100g Butter - 1 oo
y Eggs 2 Finely ground grape skins 50 g Cow Milk 401 Sodium bicarbonate/water 1'J72.5 g The prepared raw materials were placed in a mold and baked at 180° C. for 20 minutes.

A sponge cake with a grape flavor was obtained, and the texture was smooth and delicious.

patent applicant Daicel Chemical Co., Ltd.

Claims (1)

[Claims] A method for processing pericarp with a pulp band, characterized by converting into parenchyma in an amount equal to or more than the weight of the dermis, and dehydrating and drying.