Daesang Corporation

Samsung Electronics Co., Ltd.

Dong Cheol Park

Ki Kueon Kang

Jin A Kim

Hyun Jung Park

Young-duk Kim

Min Ho Han

Jang-Ryul Oh

Bok Jun Park

Seo Hyoung Kim

Jae Young Oh

The present invention relates to a complex amino acid seasoning composition, comprising L-glutamic acid and L-lysine; wherein the composition is in the amorphous form and exhibits pH 6.5-8.0 in an aqueous solution. In addition, the present invention relates to a preparation method of the complex amino acid seasoning composition. The present invention provides amino acid seasoning compositions with excellent sensory properties in terms of saltiness and umami by use of L-glutamic acid and L-lysine. In contrast to conventional technologies, the present invention enables to block bitterness and offensive odor originated from amino acid ingredients, providing health-friendly seasoning compositions with no sodium ingredient. The seasoning composition of the present invention can be prepared with no formation of L-glutamic acid&#x2022;L-lysine crystals in a very convenient and cost-effective manner.

Amino acid seasoning compositions comprising L-glutamic acid and L-lysine

The present invention relates to a method for preparing 2-pyrrolidone using biomass, comprising: a step (a) of culturing a microorganism which contains glutamate decarboxylase as a whole-cell catalyst in a culture medium containing glutamic acid or glutamate so as to prepare 4-amino butyric acid; a step (b) of filtering the 4-amino butyric acid from the culture medium in order to obtain the 4-amino butyric acid; and a step (c) of converting the 4-amino butyric acid into 2-pyrrolidone. The present invention provides a series of processes for preparing 2-pyrrolidone from glutamic acid or glutamate using biomass. According to the present invention, 4-amino butyric acid is prepared using a microorganism as a whole cell, and preferably, 4-amino butyric acid which has not undergone a complicated refining process such as a crystallization process is directly used to prepare 2-pyrrolidone at a high yield rate in an economically advantageous manner. According to the present invention, 2-pyrrolidone may be mass-produced at a high yield rate and low production costs. The method of the present invention simplifies processes for preparing 2-pyrrolidone, and thus is suitable for mass production at an industrial scale.

Method for preparing 2-pyrrolidone using a microorganism containing glutamate decarboxylase

An apparatus and method for sensing a smart card in a dual mode portable terminal are provided. The apparatus includes a plurality of smart card modules including identification information for receiving a specific wireless communications protocol, and at least two communications modules for performing wireless communications according to a connected smart card module among the plurality of smart card modules, wherein any one of the at least two communications modules connected to a smart card module having preset identification information is set as a master device.

Apparatus for sensing smart-card in dual mode portable terminal and method thereof

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Suwon-si, South Korea

Dong Cheol Park