JP2008022703A - Poultry feed and hen egg - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a highly nutritional hen egg more easily increased in the concentration of zeaxanthin in a hen egg to enable an eater to easily take the zeaxanthin. <P>SOLUTION: The hen egg can be produced through producing poultry feed where matrimony vine seeds or extract from the matrimony vine seeds are (is) added to feed at 0.1-10 wt.%, and giving the feed to poultry so that the zeaxanthin as a component of the matrimony vine seeds shifts to the hen egg to make the hen egg contain the zeaxanthin at high concentration. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a poultry feed used to increase the zeaxanthin content in egg yolk and a chicken egg raised in the zeaxanthin content raised in the poultry feed, and more particularly to a poultry feed containing wolfberry seeds or an extract thereof. The present invention relates to a chicken egg in which zeaxanthin, which is a component of wolfberry, is transferred to an egg obtained by feeding the chicken feed to the chicken and is raised so that the zeaxanthin content in the yolk is increased.

  In recent years, it has been found that a type of carotenoid called zeaxanthin plays an important role in human health. Zeaxanthin is the main component of macular pigment, which is particularly related to the health of the eyes and allows you to see fine objects in a part of the retina. It is not only a decrease factor due to aging but also an external factor such as ultraviolet rays. It is also said that zeaxanthin in the retina is affected by stress and unbalanced diets. In fact, the relationship between age-related macular degeneration (AMD), which is the cause of blindness, and this decrease in zeaxanthin is described in Arch. Ophthalmol. 1992; 110 (12): 1701-8 (Title: Risk factors for neovascular age-related macular degeneration. In the case of eye disease-suppression group).

  In addition to this aging, the chances of using eyes on TV games and computers are increasing among young people in recent years, and the degree of interest in eye health is increasing regardless of age.

  On the other hand, in the egg market, various nutrients such as iodine, docosahexaenoic acid, vitamin E, etc. are added to the poultry feed to increase the nutritional components in the egg and develop high value added eggs. It is sold as so-called special eggs, and the development of special eggs with a new concept is expected.

  In fact, patents having such a purpose, for example, JP 2005-348725 (nutrient component: tocotrienol) and JP 2005-224157 (nutrient component: folic acid) are disclosed. However, there are only a limited number of nutrients contained in actual feeds transferred to eggs, and even if transferred, the content in the eggs is very small, and the nutritional value obtained from actual eggs is very low. That is the current situation.

  On the other hand, chicken eggs contain xanthophyll originating from corn, which is the main ingredient of feed, but its main component is lutein and the amount of zeaxanthin is small.

  As a method for increasing the zeaxanthin content in chicken eggs, Japanese Patent Application Laid-Open No. 10-155430 discloses an invention of a high concentration zeaxanthin-containing egg by mixing spirulina, which is a kind of algae, with chicken feed. Since the digestibility of Spirulina was low for chickens, the rate of transfer of zeaxanthin to eggs was poor, and there was a problem that it was extremely expensive to produce eggs with high concentrations of zeaxanthin.

JP 2005-348725 A JP 2005-224157 A Japanese Patent Laid-Open No. 10-155430 Arch. Ophthalmol. 1992; 110 (12): 1701-8;

  An object of the present invention is to develop a poultry feed that can more easily increase the concentration of zeaxanthin in chicken eggs, and to develop a method for obtaining a highly nutritious chicken egg that can easily consume zeaxanthin.

In order to achieve the above-mentioned problems, the present inventors have conducted intensive research, and zeaxanthin is a pigment component of wolfberry, which is naturally grown in Japan, China and Korea, and is usually dried. In addition to being used as an ingredient that takes advantage of its sweetness, focusing on the fact that it has been eaten in China and Japan for a long time as a healthy ingredient due to the various nutritional components included, wolfberry fruit or its extraction It was found that zeaxanthin as a raw material of wolfberry is transferred at a high concentration in chicken eggs obtained from poultry farmed using such feed, and the present invention has been completed.
That is, a chicken egg obtained by mixing a dried wolfberry directly into a poultry feed or using a poultry feed produced by mixing a wolfberry extract obtained by extracting only the pigment component of the wolfberry Among them, it was found that zeaxanthin was transferred at a high concentration, and the present invention was completed.

  Thus, the subject of the present invention is a poultry feed containing wolfberry or wolfberry extract.

  In addition, the present invention is a poultry feed in which the content of the wolfberry or an extract thereof is in the range of 0.1% to 10% by weight with respect to the feed.

  Moreover, this invention is a chicken egg whose zeaxanthin content in the said chicken egg is 2 mg or more per 100 g of chicken eggs.

  The nutritive value of a hen's egg can be improved by mixing a wolfberry or its extract into a poultry feed, transferring zeaxanthin, which is a nutrient component, to the hen's egg, and containing it in a high concentration in the hen's egg. As a result, by eating the hen's egg, it is possible to provide a food material that can easily ingest zeaxanthin, which is considered good for eye health.

  The wolfberry used can be mixed with the poultry feed even in the harvested raw state, but is preferably dried. Usually, it is sun-dried or mechanically dried, but the drying method is not limited. An example of component analysis of dried wolfberry is shown below.

Also, the fruit of dry wolfberry hexane, butane, with ethanol or the like polar solvent, or extracting the color component, or CO ₂ supercritical extraction extracts were directly sprayed to the feed or silica, soybean meal, such as defatted rice bran It can also be adsorbed on a substrate and mixed with poultry feed.

The wolfberry or extract thereof according to the present invention can be easily mixed into any type of poultry sample commonly used in poultry farming.
In the case of dried wolfberry, the added amount of wolfberry in the poultry feed of the present invention is preferably from 0.1% to 10% by weight from the average content of zeaxanthin contained therein (the above analysis example), and zeaxanthin in 100 g of chicken egg. In order to contain 2 mg or more, 0.5 to 5% is more preferable. The amount of zeaxanthin accumulated in hen's eggs is not economical because when the added amount of wolfberry is 5% or more, the accumulated amount does not tend to increase proportionally.

  The wolfberry of the present invention can be mixed with a poultry feed and given to the poultry feed, but it can also be premixed and given together with vitamins and the like in the premix.

Example 1
Chinese dried wolfberry is finely pulverized into a paste using a food processor, mixed with the chicken farming feed (Newstar, protein 17%) manufactured by Nikkei Sangyo Co., Ltd., and a 28-week-old laying hen (Boris Brown) 21 The wings were divided into three wings, and the hen eggs collected and collected for 4 weeks in the wolfberry seed-free group, 1% added group, and 5% added group were analyzed. The analysis results are shown in Table 1.

  In the additive-free zone, zeaxanthin from feed raw material and corn was detected, but as shown in the table above, it was confirmed that zeaxanthin derived from wolfberry seeds migrated to chicken eggs in proportion to the amount added. It was found that the content increased.

Example 2
Chinese dried wolfberry is soaked in 500 g of hexane (10 kg) and allowed to stand at room temperature for 6 hours to extract zeaxanthin, which is a pigment component of wolfberry. After filtration and suction, the hexane extract was concentrated and removed at normal pressure to obtain 1.5 g of a viscous reddish brown paste pigment. When this paste pigment was analyzed, zeaxanthin was about 30%. The paste pigment was mixed with defatted bran so that the pigment content was 3%, thereby obtaining a wolfberry extract powder having a zeaxanthin content of 3%.
After mixing this wolfberry seed extract powder into the poultry feed in the same manner as in Example 1, 21 laying hens were divided into 3 sections, and were bred for 4 weeks as an additive-free group, a 0.5% added group, and a 1% added group. Thereafter, the collected eggs were analyzed, and the results shown in Table 2 were obtained.

  As shown in the above table, it was confirmed that the content of zeaxanthin in chicken eggs was transferred in proportion to the amount added in the group where wolfberry extract powder was added to the poultry feed compared to the non-added group. .

Claims (4)

  Poultry feed containing wolfberry or its extract.   The poultry feed according to claim 1, wherein a content of the wolfberry or an extract thereof is in a range of 0.1% to 10% by weight with respect to the feed.   A chicken egg in which chickens are raised using the poultry feed according to claim 1 or 2 and zeaxanthin in egg yolk is increased.   The chicken egg according to claim 3, wherein the zeaxanthin content in the egg yolk is 2 mg or more per 100 g of chicken egg.