JP3532687B2 - Propolis concentrated extract with low ethanol content - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a concentrated propolis extract (propolis conc extract), and more particularly to a concentrated propolis extract with a low ethanol concentration. 2. Description of the Related Art Propolis, which is also commonly referred to as bee syrup, is produced when a bee continues to bite a flower-like or resin-like component of a flower, and this component is mixed with an enzyme in the saliva of the bee. Is a substance. Since propolis contains trace nutrients such as flavonoids, minerals, and vitamins, it has been attracting attention as a food material that promotes health promotion and disease treatment. [0003] This propolis is generally used as a propolis extract by extracting useful components from raw propolis using ethanol to produce a propolis extract, and then evaporating and concentrating the ethanol to provide a propolis concentrate extract. Such a conventional concentrated propolis extract contains ethanol at a high concentration (generally 20 to 30% by weight) and is not always satisfactory in that alcohol odor remains. At this time, if ethanol is forcibly evaporated, the fluidity is lost, and it becomes difficult to mix with other additive components, which makes the material unsuitable for use as a food material. SUMMARY OF THE INVENTION The present inventor has found that by adding a specific component, even if the alcohol content is reduced, the fluidity that facilitates mixing with other additional components is maintained. It has been found that an excellent concentrated propolis extract can be obtained. Thus, according to the present invention, there is provided a concentrated propolis extract containing 15 to 30% by weight of wheat germ oil and 5% by weight or less of ethanol based on the propolis extract. You. The concentrated propolis extract having a low ethanol content according to the present invention is obtained by adding wheat germ oil when the propolis extract obtained by extracting a propolis raw material from which foreign substances have been removed with ethanol is concentrated. Obtained by: [0007] Wheat germ oil is added to the propolis extract in an amount of 15 to 30% by weight, preferably 20 to 30% by weight. By adding this wheat germ oil, even if concentration is performed so that the ethanol content is 5% by weight or less (based on propolis extract) so that the odor is not felt, the obtained concentrated propolis extract retains sufficient fluidity. are doing.
Therefore, for example, other additive components frequently used in propolis products, such as lactose, β-CD (cyclodextrin), or honey, can be mixed homogeneously. The propolis product thus obtained is
Generally, more ethanol is removed in the final product form (eg, capsules). Hereinafter, the present invention will be described with reference to Examples to further clarify the features of the present invention. [0009] [Example] Natural propolis is selected by visual observation, and after removing metals such as iron and impurities such as stones and wood chips, freezing,
It was pulverized with a pulverizer equipped with a 0.8 mm filter to obtain propolis powder. To 13 kg of propolis powder was added 45 liters of a stock solution (99.5%) of primary ethanol, mixed and stirred for 10 hours with a stirrer, and allowed to stand for 120 hours to extract. To the extraction residue, 45 liters of ethanol was added, stirred with a stirrer, and allowed to stand for 120 hours for re-extraction. This was repeated twice, and the extract was filtered through a suction filter to prepare Brix 30, which was used as a crude propolis extract. [0011] 7.0 kg of crude propolis extract and 0.25 kg of wheat germ oil (manufactured by Summit Oil Co., Ltd.) are weighed, placed in a flask of an evaporating concentrator, the temperature of a water bath is set at 40 ° C, and ethanol is evaporated to 1 kg. Concentrated to obtain a concentrated propolis extract containing wheat germ oil according to the present invention. Ethanol content 3.5% by weight in concentrated propolis extract,
The wheat germ oil content was 25% by weight. Similarly, 7.0 kg of the crude propolis extract is weighed, placed in a flask of an evaporating concentrator, the temperature of the water bath is set at 40 ° C., and ethanol is evaporated and concentrated to 1 kg without adding wheat germ oil. The concentrated propolis extract obtained as a control was used as a control. The concentrated propolis extract containing wheat germ oil and the concentrated propolis extract of the control according to the present invention were each powdered to 0.8 mm, and lactose or β-cyclodextrin was added thereto and mixed. In the case of the control propolis concentrated extract, when lactose or β-cyclodextrin is added, there is no mixing power and lactose or β-cyclodextrin (β-C
D) became lumpy and a uniform mixture could not be obtained. In particular, this tendency was remarkable when lactose or β-CD was added in an amount equal to or more than that of the control propolis extract. On the other hand, the concentrated propolis extract containing wheat germ oil of the present invention could obtain a homogeneous mixture even if lactose or β-CD was added up to 3.5 kg per 1 kg of the concentrated extract.

Claims (1)

(57) [Claim 1] A concentrated propolis extract containing 15 to 30% by weight of wheat germ oil and having an ethanol content of 5% by weight or less.