JPH02173183A - Antioxidant - Google Patents

Abstract

PURPOSE:To obtain a strong antioxidant, containing an extract of bamboos, tocopherol and lecithin at a specific ratio, excellent in safety for human bodies and used for foods or feeds. CONSTITUTION:The objective antioxidant containing (A) 0.1-50wt.% (preferably 1-10wt.%) extract of bamboos, especially preferably using leaves and stems of Phyllostachys pubescens as a raw material, (B) 1-20wt.% (preferably 5-10wt.%) tocopherol, especially preferably consisting of natural concentrated tocopherol or diluted with fats and oils and (C) 1-50wt.% (preferably 5-20wt.%) lecithin consisting of phosphatidylcholine, N-acylphosphatidylethanolamine, etc. Furthermore, the component (A) is produced by a method for pulverizing leaves or stems of the bamboos which are raw materials using a ball mill, etc., then extracting the pulverized leaves or stems with a solvent, such as ethanol or n-hexane, and subsequently evaporating the solvent.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a powerful antioxidant that is used in food or feed and has excellent safety for the human body.

[Conventional technology]

Conventionally, butylated hydroxyanisole (BHA) has been used as an antioxidant that is inexpensive and has excellent antioxidant power.
) and dibutylhydroxytoluene (BHT), as well as natural antioxidants such as tocopherol, L-ascorbic acid, citric acid, melanoidin, flavonoids, amino acids, and phytic acid alone or as agents. Mixtures thereof have been used.

[Problem to be solved by the invention]

However, among these, synthetic antioxidants such as BHA and BHT have recently become problematic for use in food products due to their safety to the human body, while natural antioxidants Although they do not pose any safety problems, they each have advantages and disadvantages, such as insufficient antioxidant effects, and there has been a demand for the development of even better antioxidants.

[Means to solve the problem]

As a result of intensive research to solve these conventional problems, the present inventors have found that by using bamboo extract, tocopherol, and lecithin together as antioxidants, all of the above-mentioned drawbacks have been eliminated, and the product has become fully effective in the industry. Having learned that it is possible to obtain an antioxidant that meets these needs, we have completed the present invention.

That is, the present invention relates to an antioxidant containing a bamboo extract, tocopherol, and lecithin.

In the present invention, bamboos that can be used as raw materials for obtaining a bamboo extract include bamboos belonging to the genus Prunus spp., genus P. spp., genus Madake, genus Medake, genus P. genus, genus Sasamorpha, genus Narihiradake, genus P. genus, etc. Among them, leaves and stems of Moso bamboo are particularly suitable.

In order to obtain a bamboo extract from these bamboos, first, the leaves or stems of the raw bamboo are ground using a ball mill or the like, and then ethanol and n-hexane are added.

After extraction with a solvent such as ether or acetone.

All you have to do is evaporate the solvent.

Further, at this time, if necessary, further purification can be performed using chromatography.

The amount of bamboo extract is 0.1 to 50% by weight, preferably 1 to 10% by weight.

If it is less than 0.1% by weight, the antioxidant power is insufficient;
If it exceeds % by weight, it is disadvantageous because it increases the cost.

The tocopheres used in the present invention are α and β.

Although either γ or δ type tocopheres can be used, naturally concentrated tocopheres and those diluted with fats and oils are particularly preferred.

Furthermore, commercially available products are sufficient for these tocopherols, and they can be used alone or in appropriate combinations.

The amount of tocopherol blended is 1 to 20% by weight, preferably 5 to 10% by weight.

If it is less than 1% by weight, the antioxidant power is insufficient, and if it exceeds 20% by weight, it is disadvantageous in terms of cost.

Lecithins used in the present invention include phosphatidylcholine, phosphatidylethanolamine, phosphatidylinositol, and phosphatidic acid.

N-acylphosphatidylethanolamine and the like can be used alone or in appropriate combinations.

Furthermore, lyso-type (monoacyl phospholipid) lecithin obtained by treating the above lecithin with oxygen can also be used.

The amount of lecithin is 1 to 50% by weight, preferably 5 to 2% by weight.
It is 0% by weight.

If it is less than 1% by weight, the antioxidant effect will not be sufficient.

Even if 50% by weight or more is added, the antioxidant power is not improved)a) The antioxidant of the present invention may further contain other antioxidants and synergists as other additives, such as L-ascorbic acid and gallic acid. , phytic acid, citric acid, etc., and also water, ethanol, acetone as solvents.

N-hexane and the like can be added alone or in appropriate combinations.

The blending amount of these is preferably 1 to 97.9% by weight.

When using the antioxidant of the present invention, it is sufficient to add it directly to the object such as food or feed, and the addition ratio is 10 to 1% of the amount of oil and fat contained in the food or feed.
10000 pp preferably 200-1000 pp
It is m. If this amount is less than Loppm, there will be no antioxidant effect, and if it exceeds 110,000 ppm, the antioxidant power will not improve much and it will be uneconomical.

Furthermore, in this case, when the antioxidant is insoluble in the target material such as food or feed, the antioxidant and water are mixed and emulsified, and O/
It may be added as a W-type emulsion, and in this case, a suitable emulsifier such as glycerin fatty acid ester may be used.

〔Effect of the invention〕

The antioxidant of the present invention has much stronger antioxidant power than conventional natural antioxidants, is highly safe for the human body, and is a useful antioxidant.

〔Example〕

Examples, comparative examples, and test examples will be described below.

In the examples, % indicates weight %.

Example 1 The epidermis Log of the stem of Moso bamboo was ground with a ball mill, 100 cc of ether was added thereto, and then left overnight at room temperature. Then, the mixture was filtered to obtain a filtrate, and the ether was evaporated to produce 0.3 g of bamboo extract.

Next, the obtained bamboo extract is mixed and dissolved with the constituents shown below in the mixing ratio to create an antioxidant! Made by 8J.

Bamboo extract □% Natural tocopherol (40% product) 20% (Product name: Tocopherol 40, Nisshin Oil Co., Ltd.) Soybean lecithin
10% (Product name Nisshin Lecithin DX, Nisshin Oil Co., Ltd.) Deodorized rapeseed oil
69% Comparative Examples 1 to 8 Antioxidants were prepared using the respective components used in Example 1 in the proportions shown in Table 1.

Test Example 1 Example 1 on purified lard. After adding loooppm of the antioxidants of Comparative Examples 1 to 8, an AOM test was conducted.

Table 2 shows the time required for POv to rise to 100.

Table 2 From the results in Table 2, it can be seen that the antioxidant IE agent of the present invention is superior to those of these comparative examples, not to mention those without additives, and even when compared with those that deviate from the blending ratio of the present invention. It is clear that it has a strong anti-inflammatory effect.

Test Example 2 11,000 pp of the antioxidants obtained in Example 1 and Comparative Examples 1 to 8 were added to deodorized rapeseed oil.

Next, an oil phase obtained by dissolving monoglycerol stearate as an emulsifier in 790 g of each of these oils and fats was added to 1 k of water.
g and 200 g of gum arabic dissolved in the aqueous phase,
After preliminary emulsification at 70°C, homogenization was performed using a homogenizer.

By spray drying this emulsion, powdered rapeseed fat and oil was obtained.

Then, the obtained powder was stored in a constant temperature bath at 60°C, and
After a day, the oil content was extracted from the powder and its peroxidation value was measured. To extract the oil, add 40 g of chloroform to 10 g of powder.
After adding m1 and performing ultrasonic treatment for 5 minutes, the remaining powder was filtered off, and the filtrate was concentrated to obtain a measurement sample. P
Table 3 shows the results of Ov measurement.

Table 3 From the results in Table 3, it is clear that the antioxidant of the present invention has a stronger antioxidant effect than that of the comparative example.

Claims (1)

[Claims] Bamboo extract 0.1-50% by weight, tocopherol 1-2
0% by weight, and 1 to 50% by weight of lecithin.