Food or edible material: processes – compositions – and products – Fermentation processes – Of isolated seed – bean or nut – or material derived therefrom
Reexamination Certificate
2002-11-13
2004-06-29
Hendricks, Keith (Department: 1761)
Food or edible material: processes, compositions, and products
Fermentation processes
Of isolated seed, bean or nut, or material derived therefrom
C426S051000, C426S052000, C426S598000
Reexamination Certificate
active
06756066
ABSTRACT:
BACKGROUND OF THE INVENTION
(a) Field of the Invention
The present invention relates to a method for preparing bean curd containing lactic acid bacteria culture, and to bean curd prepared according to the method, to a beverage containing lactic acid bacteria, and to a method for preparing the same. Specifically, the present invention relates to a method for preparing bean curd containing lactic acid bacteria by adding lactic acid bacteria culture to bean soup, and bean curd prepared according to the method, a method for preparing a beverage containing lactic acid using bean soup remaining after preparing the bean curd, and a beverage containing lactic acid prepared according to the method.
(b) Description of the Related Art
Proteins separated from beans can be denatured from soluble proteins to non-soluble proteins according to the concentration of salts, and these non-soluble proteins are compressed to make a bean curd that is loved by Orientals. In addition, positive health effects from foods made with beans, such as bean curd, have been newly found.
Beans are known to have anticancer effects due to lecithin, and to contain other healthful ingredients. For examples, an anticancer drug and a hypotensive are separated from soybean paste made from beans, and bean sprouts contain asparagine which protects the liver from hangovers.
However, bean curds are conventionally prepared using brine, and a new preparation method of bean curds has not been developed from the conventional method. Brine is a by-product obtained when sea salt absorbs moisture in the air due to its deliquescence property to dissolve and wash away ingredients other than the salts, over a long period of time. Accordingly, brine comprises various dissolved ingredients which are contained in sea water, including cations such as magnesium that are known to play an important role in making bean curds.
A deficiency in magnesium causes serious health problems since magnesium ions are physiologically important, but a high intake thereof can also cause physical problems. In addition, unpurified salts generate a bitter taste due to magnesium ions.
Accordingly, it can be predicted that the magnesium intake of Koreans exceeds a sufficient amount since bean curds made using brine are presently sold on the market, and unpurified salts are used in homes. Although the amount of magnesium intake from bean curds is not excessive because the amount of magnesium remaining in bean curds is not large, since Koreans habitually use sauces including fermented soybeans, considering the amount of magnesium contained in sauces, they consume an excessive amount of magnesium and are consequently attacked by related diseases of adults.
In addition, the taste of bean curds can be good while they are hot, but it cannot be preserved for a long time even if stored cold.
Particularly, bean curds are difficult to preserve for even one day without refrigeration, and microorganisms can grow under conditions in which constituents other than protein contained in beans remain even in trace amounts. However, there is no remedy for these problems.
Bean curds containing lactic acid are presently sold on the market, and Korean Patent Application No. 98-1089 discloses a method for preparing bean curds by lactic acid fermentation. However, according to the method, lactic acid is fermented and aged in soybeans to prepare bean curds containing lactic acid, and the method has a disadvantage in that manufacturing costs are high because it uses expensive diary products such as milk as well as beans, etc. as raw materials.
SUMMARY OF THE INVENTION
The present invention is made to solve these problems, and it is an object of the present invention to provide a method for preparing bean curds by using lactic acid bacteria culture, and to provide bean curds prepared according to the method. According to the method of the present invention, bean curds are prepared using lactic acid bacteria culture thereby eliminating factors hazardous to health, the lactic acid in lactic acid fermenting foods such as Kimchi is used thereby decreasing manufacturing costs, and the growth of Gram negative bacteria is inhibited due to lactic acid and lactic acid bacteria, thereby increasing storage properties and microbiological safety of bean curds.
It is another object of the present invention to provide a method for preparing a beverage containing lactic acid using bean soup remaining after preparing bean curds according to the above method, and to provide a beverage containing lactic acid prepared according to the method.
In order to achieve these objects, the present invention provides a method for preparing bean curds by adding lactic acid bacteria culture comprising the steps of:
a) preparing lactic acid bacteria culture by fermenting i) salt, sugar, water and ii) material which is one or more selected from a group consisting of vegetables, fruits, and a mixture thereof with lactic acid bacteria;
b) preparing the bean soup by pulverizing the soaked soybeans in water, heating, and filtering; and
c) adding the lactic acid bacteria culture of step a) to the been soup cooled at 40° C.
In addition, the present invention provides bean curds prepared according to the method.
Specifically, the bean curds prepared according to the present invention comprises living lactic acid bacteria that increases the preservation property of bean curds compared to conventional bean curds, and also increases probability that lactic acid reaches the intestine when the bean curds are digested to increase intestine-cleaning effects.
The lactic acid bacteria culture is preferably prepared by mixing one or more of vegetables, fruits and mushrooms at room temperature using purified water such as tapped water in a basic medium comprising 2.5% salts and 1% sugar. Although the lactic acid bacteria can be prepared at room temperature without sterilization, sterilizing and aseptic operation should be preceded with for commercial production.
Favorable lactic acid bacteria existing in Kimchi are found in the lactic acid bacteria culture prepared as the above.
Any vegetables including radishes, cabbages, etc. can be used as the vegetables, and any fruit including pears, pineapples, etc. can be used as the fruits.
In addition, bean curd dregs which is solid components produced after filtering heated soybeans, can be added to one material or more selected from vegetables, fruits, and mushrooms. Specifically, the bean curd dregs can be utilized as good nitrogen and carbon sources when culturing lactic acid bacteria, because they are pulverized beans and can be further decomposed using microorganism enzymes. The bean curd dregs can be a substitute for medium for culturing the lactic acid, it cuts down the production cost.
Lactic acid bacteria have a property of inhibiting the growths of disease-causing bacteria and harmful bacteria because of the lactic acid produced by lactic acid fermentation, and they are used as a medicine for intestinal disorders because they inhabit the intestine to prevent abnormal fermentation of various bacteria. In addition, they are Gram positive and are common anaerobic or anaerobic bacteria, they have no motility, most are catalase negative, and they require various vitamins, amino acids, peptides, etc. for their growth. These lactic acid bacteria are largely classified into lactic acid bacillus and lactic acid micrococcus.
The representative example of the lactic acid bacillus is lactic acid bacteria pertaining to the genus Lactobacillus, which are aerobic lactic acid bacteria existing in the intestine of all mammals and in other animals, and are used to treat autopoisoning of the intestine.
The lactic acid micrococcus is further classified into the genera Streptococcus, Pediococcus and Leuconostoc, the lactic acid bacteria pertaining to the genus Pediococcus is streptococcus, and
P. pentosaceus
is mainly found in Kimchi. In addition, lactic acid bacteria pertaining to the genus Leuconostoc are diplococcus and
L. mesenteroides
produce a lot of gluten-like substance from sugar.
In the pr
Han Hong-Ui
Jeong Ga-Jin
Kim John-N.
Kim Philomena-H.
Ryu Jae-Won
Blakely & Sokoloff, Taylor & Zafman
Hendricks Keith
Kim John-N.
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