JPH1028565A - Vegetable juice containing fine cellulose - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a vegetable juice suppressed in the precipitation of insoluble ingredients, such as pulp, contained in the vegetable juice to improve the dispersion stability of the insoluble ingredients by adding fine cellulose having a specific average particle diameter to the vegetable juice such as carrot juice. SOLUTION: Fine cellulose having an average particle diameter of <=20μm (preferably containing a fraction having particle diameters of >=10μm in an amount of <=70% in the particle size distribution) is added to a vegetable juice in an amount of approximately 0.005-3.0wt.% (converted into the solid content), preferably 0.1-0.5wt.%, based on the vegetable juice. The fine cellulose can be obtained by depolymerizing wood pulp, purified linter, etc., by an acid hydrolysis method, etc., and subsequently grinding the depolymerization product.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a vegetable juice containing fine cellulose. That is, the vegetable juice containing fine cellulose of the present invention is characterized by containing fine cellulose, whereby sedimentation of insoluble components such as pulp contained in the vegetable juice is suppressed, and the dispersion stability is remarkably high.

[0002]

2. Description of the Related Art When vegetable juice such as carrot juice is observed in a store, insoluble components such as pulp are usually settled, and the appearance is not good. The necessity, such as necessity, has significantly reduced the value of the product. To prevent pulp sedimentation
JP-A-6-189724 describes that a specific propylene glycol alginate and sodium carboxymethylcellulose are blended. However, even if these water-soluble polymers were blended, the effect of preventing sedimentation of pulp was not sufficient.

Japanese Patent Application Laid-Open No. Hei 5-336936 describes an example in which cellulose is added to ginseng juice. However, there is no description about the physical properties of cellulose.
Further, there is no description about prevention of sedimentation of insoluble components such as pulp.

[0004]

DISCLOSURE OF THE INVENTION The present invention provides a vegetable juice such as ginseng juice in which sedimentation of insoluble components such as pulp contained in ginseng juice and the like is suppressed and dispersion stability is extremely high. The purpose is to:

[0005]

According to the present invention, an average particle size of 20 is provided.
The present invention relates to a vegetable juice containing fine cellulose, which contains fine cellulose of not more than μm. Hereinafter, the present invention will be described in detail. The vegetable juice referred to in the present invention is
Ginseng, celery, parsley, lettuce, spinach, asparagus, cabbage, tomato, etc. are used as the raw materials, and are obtained by squeezing the raw materials by an ordinary method. Also, a mixed juice obtained by mixing two or more of these may be used. Particularly when ginseng juice is contained, the effect of the present invention is remarkable since sedimentation of insoluble components is remarkable. If necessary, salt, sugar, spice, fruit juice such as lemon, xanthan gum, karaya gum, carrageenan, CM
A thickening polysaccharide such as C-Na may be added.

[0006] The fine cellulose used in the present invention has an average particle size of 20 µm when dispersed under appropriate stirring in water.
It is as follows. At this time, the fraction of 10 μm or more in the particle size distribution is preferably 70% or less. Preferably, the average particle size is 12 μm or less, and the fraction of 10 μm or more is 60% or less. More preferably, the average particle size is 8μ.
m and a fraction of 10 μm or more is 40% or less. Particularly preferably, the average particle size is 4 μm or less,
The fraction of 0 μm or more is 10% or less. Average particle size is 20
If it exceeds μm, it becomes difficult to prevent sedimentation of pulp and the like. The smaller the average particle size, the greater the effect of preventing sedimentation, but the lower limit is naturally limited by grinding and pulverizing techniques and equipment, and it is generally considered to be about 0.05 μm at present.

[0007] The fine cellulose used in the present invention will be described in detail. Cellulose-based materials such as wood pulp, refined linter, regenerated cellulose, and plant fibers derived from grains or fruits are subjected to acid hydrolysis, alkali oxidative degradation, enzymatic degradation, and the like. Depolymerization treatment by steam explosion decomposition or the like or a combination thereof to obtain an average degree of polymerization of 30 to 375, and then, if necessary, adding a thickening polysaccharide such as xanthan gum, karaya gum, carrageenan, CMC-Na, etc. Can be obtained by grinding with a mechanical shear and drying if necessary. Alternatively, fine fibrous cellulose that can be obtained by wet grinding with a mechanical shear without subjecting the cellulosic material to chemical treatment may be used.

[0008] The wet milling machine is freely selected depending on the amount of water present in the system and the degree of fineness of cellulose. For example, when applying a sufficient mechanical shear to obtain fine cellulose having an average particle size of 8 μm or less, medium stirring mills, for example, a wet vibration mill, a wet planetary vibration mill, a wet ball mill, a wet roll mill, a wet coball mill, In addition to a wet bead mill, a wet paint shaker, and the like, there are a high-pressure homogenizer and the like. About 5 high pressure homogenizers
An effective type is a type in which the slurry is guided to a fine orifice at a high pressure of at least 00 kg / cm ² and face-to-face collides at a high flow rate. The optimum grinding concentration when these mills are used varies depending on the model, but a solid concentration of about 3 to 15% by weight is generally suitable. In addition, in the case of applying a mechanical shear such as to obtain fine cellulose having an average particle size of 5 to 20 μm, in a slurry-like system, a grinding machine such as a colloid mill, a continuous ball mill, and a homogenizer can be used.
To grind cake-like things with less moisture,
Kneaders, raikai machines, extruders and the like can be used. The microfibrous cellulose is obtained by passing the cellulosic material suspension several times with a high-pressure homogenizer at a pressure of 200 kg / cm ² or more to vary the fiber diameter to about 0.01 to 1 μm. . Alternatively, it is obtained by treating the cellulosic material suspension several times with a medium stirring mill.

Although these models can be used alone for the purpose of the present invention, two or more types can be used in combination. These models may be appropriately selected according to the viscosity requirements in various applications. Examples of their production methods include JP-B-40-12174, JP-B-57-14777, and JP-A-7-2.
68129, JP-A-56-100801,
It is described in JP-A-3-163135.

[0010] The amount of the fine cellulose added is preferably 0.05 to 3.0% by weight in terms of solid content based on vegetable juice. If the content is less than 0.05% by weight, the effect is not necessarily sufficient. If the content is more than 3.0% by weight, overthroat may be deteriorated due to thickening. Particularly preferably 0.1 to 1.0
% By weight. More preferably 0.1 to 0.5% by weight
It is.

The method for adding the fine cellulose to the vegetable juice is not particularly limited. For example, a method in which a suspension in which fine cellulose is dispersed is mixed with vegetable juice prepared in advance, or a method in which fine cellulose is added and stirred when preparing vegetable juice may be used.

[0012]

Now, the present invention will be described in further detail with reference to Examples. In addition, the measurement was performed as follows. <Average particle size, ratio of particles having a particle size of 10 μm or more> (1) A sample was charged into an ace homogenizer (AM-T, manufactured by Nippon Seiki Co., Ltd.) containing distilled water in an amount of 3.0 g to a total amount of 300 g. (2) Disperse at 15000 rpm for 5 minutes. (3) Horiba laser diffraction particle size distribution analyzer (LA-5
00) is used to measure the particle size distribution. The average particle diameter is a particle diameter of an integrated volume of 50%, and the ratio of particles of 10 μm or more is represented by a ratio (%) in a volume distribution.

[0013]

Example 1 First, a paste of fine cellulose was prepared according to JP-A-3-163135. After cutting the commercially available DP pulp, it was hydrolyzed in 7% hydrochloric acid at 105 ° C. for 20 minutes, and the resulting acid-insoluble residue was filtered and washed to prepare a cellulose dispersion having a solid content of 10%. The average particle size of the hydrolyzed cellulose was 25 μm. This cellulose dispersion is stirred by a medium-stirring wet pulverizer (Apex Mill, AM-1 type, manufactured by Kotobuki Giken Kogyo Co., Ltd.)
Using zirconia beads with a diameter of 1 mmφ as a medium,
The pulverization treatment was performed by two passes under the conditions of a stirring blade rotation speed of 1800 rpm and a supply amount of the cellulose dispersion of 0.4 l / min to obtain a paste of fine cellulose A. The average particle size of the fine cellulose A was 3.1 μm, and the ratio of particles having a size of 10 μm or more was 2.8%.

Commercial ginseng juice (manufactured by Kagome Co., Ltd.) 28
7 g, 13 g of fine cellulose A paste (1.3 g of fine cellulose solid content, 0.4 g in juice)
3%) and weighed using an ace homogenizer.
The mixture was stirred at 00 rpm for 2 minutes to obtain ginseng juice. 2
After refrigerated for days, there was no sedimentation of the pulp and a stable dispersion state was exhibited.

[0015]

Example 2 First, a composite of fine cellulose was prepared according to Example 5 of JP-A-7-268129.
The composition of the fine cellulose A of Example 1, xanthan gum, and starch hydrolyzate was 75/5 /
A dispersion having a total solid content of 8.0% was adjusted to 20. Next, in a drum dryer the pasty composition (LTD Kusunoki Kikai Seisakusho Ltd. KDD-1 type), after treating the surface of the drum with a food-grade silicone release agent, the water vapor pressure of 1.2 Kg / cm ^2, the rotational speed After drying at 1.0 rpm, a fine cellulose composite B was obtained. When the obtained composite was redispersed in water, the average particle size was 2.8 μm, and the ratio of particles having a size of 10 μm or more was 1.0%.

4 g of distilled water is added to 25 g of the fine cellulose composite B.
75 g was added, and the mixture was stirred and mixed at 10,000 rpm for 5 minutes using a TK homomixer (manufactured by Tokushu Kika Kogyo). 12 g of this mixture (0.45 g as fine cellulose solids,
(0.15% in the juice), 288 g of the commercially available ginseng juice used in Example 1 was weighed, and stirred at 5,000 rpm for 2 minutes using an ace homogenizer to obtain a ginseng juice.

After refrigerated for 2 days, there was no sedimentation of the pulp and a stable dispersion state was exhibited.

[0018]

Example 3 First, a composite of fine cellulose was prepared according to Japanese Patent Publication No. 57-14771. First, in the same manner as in Example 1, after commercially available DP pulp was cut, the acid-insoluble residue obtained by hydrolyzing in 7% hydrochloric acid at 105 ° C. for 20 minutes was filtered and washed to obtain a wet cake of hydrolyzed cellulose. Was. Next, the composition of this hydrolyzed cellulose, carrageenan, and starch hydrolyzate was 6% by solids ratio.
The mixture was milled and kneaded for 2 hours using a kneader as 0/10/30. Subsequently, after drying in an oven, the mixture was pulverized to obtain a fine cellulose composite C. When the obtained composite was redispersed in water, the average particle size was 8.7 μm, and the ratio of particles having a size of 10 μm or more was 45%.

4 g of distilled water was added to 25 g of the fine cellulose composite C.
75 g was added, and the mixture was stirred and mixed at 10,000 rpm for 5 minutes using a TK homomixer (manufactured by Tokushu Kika Kogyo). 40 g of this mixture (1.2 g as fine cellulose solids, 0.4% in juice), 160 g of the commercially available ginseng juice used in Example 1 and commercially available vegetable juice (Kagome Co., Ltd.)
100 g) was weighed and stirred with an ace homogenizer at 5000 rpm for 2 minutes to obtain a vegetable juice containing ginseng.

After refrigerated for 2 days, there was no sedimentation of the pulp and a stable dispersion was exhibited.

[0021]

Comparative Example 1 Using only 300 g of ginseng juice,
The mixture was stirred under the same conditions as in Example 1. As a result of refrigerated storage, the ginseng juice settled in less than one day, which was considered to be pulp content.

[0022]

Comparative Example 2 Average particle size 2 obtained in the intermediate step of Example 1
The same operation as in Example 1 was carried out using 5 μm of hydrolyzed cellulose to prepare a ginseng juice containing hydrolyzed cellulose. As a result of refrigerated storage of this carrot juice, sedimentation that appeared to be pulp content and hydrolyzed cellulose occurred in less than one day.

[0023]

The vegetable juice containing fine cellulose of the present invention contains fine cellulose having an excellent dispersion stability function, thereby suppressing sedimentation of insoluble components such as pulp contained in vegetable juice such as carrot juice. Dispersion stability is remarkably high.

Claims (1)

[Claims] 1. A vegetable juice containing fine cellulose, which contains fine cellulose having an average particle size of 20 μm or less.