Abstract:
PURPOSE: A novel microorganism which produces L-type poly gamma glutamic acid is provided to obtain the poly gamma glutamic acid used as a thickening agent, and biodegradable plastic solvent. CONSTITUTION: A novel microorganism, Bacillus megaterium Toha(KCTC 11752BP), produces L-type poly gamma glutamic acid. The strain is derived from a fermented food. The strain has 16S rDNA sequence of sequence number 1 and produces the poly gamma glutamic acid at low salinity. A probiotic composition contains Bacillus megaterium Toha (KCTC 11752BP) and the poly gamma glutamic acid.
Abstract:
본 발명은 음이온성 및 양이온성 고분자를 함유하는 나노복합체 및 이의 제조방법에 관한 것으로, 생체친화성 고분자 물질인 폴리감마글루탐산(γ-PGA)과 키토산의 이온성 자기조립 성질을 이용하여 산화철 기반 나노입자를 γ-PGA/키토산 고분자 복합체 내부로 봉입하여 제조한 폴리감마글루탐산(γ-PGA)/키토산/망간산화철 나노입자의 복합체 및 이의 제조방법에 관한 것이다. 본 발명에 따른 음이온성 폴리감마글루탐산(γPGA)와 양이온성 키토산을 이용한 이온성 조립을 통해 산화철 기반 나노입자는 고분자 복합체 내부로 봉입하여 복합체 내부에 갇혀있는 산화철 기반 나노입자들이 서로간의 상호작용으로 인해 자기공명신호 증폭의 시너지효과를 유발하기 때문에, 하나의 입자로 존재할 때보다 뛰어난 조영 효과가 있는 특징이 있다.
Abstract:
PURPOSE: A feed additive containing P5 peptide for replacing antibiotics, and a producing method thereof are provided to use the feed additive for weaned piglets or meat chicken. CONSTITUTION: A feed additive containing P5 peptide for replacing antibiotics contains 0.30-0.50 parts of antimicrobial P5 peptide by weight, 3,300-3,500 kcal/kg of energy, 21.0-23.0 parts of crude protein by weight, and 1.0-1.6 parts of lysine by weight. The feed additive is for feed of weaned piglets. 0.30-0.50 parts of feed additive by weight is mixed with the total amount of feed. [Reference numerals] (AA) Peptide; (BB) Amino acid sequence; (CC) Property; (DD) Parent peptide; (EE) CA-MA: C-terminal removal (HSAKKF); (FF) P1:N-terminal addition; (GG) P1:C-terminal addition; (HH) CA-MA: C-terminal removal and substitution; (II) CA-MA: substitution
Abstract:
PURPOSE: An optical imaging probe containing a conjugate of polygammaglutamic acid and optical imaging dyeing is provided to accurately sense the position of sentinel lymph node in real time without radiation contamination. CONSTITUTION: An optical imaging probe for sensing sentinel lymph node contains a conjugate of polygammaglutamic acid and optical imaging dye. The optical imaging dye is a fluorescence dye within near infrared ray or visible ray, The fluorescence dye within near infrared ray includes Alexa Fluor 647, Alexa Fluor 660, Alexa Fluor 680, Alexa Fluor 700, Alexa Fluor 780, cy5, cy5.5, cy7, indocyanine green(ICG), Cypate, ITCC, NIR820, NIR2, IRDye680, IRDye700, IRDye800, DiD, DiR, Cresy Violet, Nile Blue, Oxazine 750, and Rhodamine800. The fluorescence dye within visible ray includes Alexa Fluor 350, Alexa Fluor 488, Alexa Fluor 532, Alexa Fluor 568, Alexa Fluor 633, Alexa Fluor 647, cy2, cy3, cy3.5, Fluorescein (FITC), NBD, Nile Red, Rhodamine B, Tetramethylrhodamine (TRITC), and Texas Red.
Abstract:
PURPOSE: A novel microorganism Weissella cibaria BLS13 is provided to ensure antiviral performance and use as a feed additive, a fermentation product, food, and a medicinal product. CONSTITUTION: A Weissella cibaria BLS13(KCTC11516BP) is isolated from Kimchi. An antiviral composition contains the Weissella cibaria BLS13(KCTC11516BP) or its culture liquid. A pharmaceutical composition for preventing an influenza infection contains KCTC11516BP or its culture liquid. The pharmaceutical composition is used in the form of a tablet, capsule, suppository, powder, gel, or liquid.
Abstract:
A method for screening an antioxidant using mutant bacteria and chlorophyllide is provided to screen a large amount of the antioxidant easily by monitoring the growth state of the mutant bacteria and be useful for selective screening of an amphiphilic antioxidant, thereby applying the effective antioxidant with little toxicity as an additive of various foods and a cosmetic product. A method for screening an antioxidant comprises the steps of: (a) culturing mutant bacteria, which is transformed by including mutation in a DNA sequence encoding superoxide dismutase, thereby inhibiting the activity of the superoxide dismutase and expressing chlorophyllide reductase capable of inducing generation of superoxide anion in the presence of oxygen, in a plate; (b) locating a plurality of filter discs where an antioxidant candidate material to be screened and chlorophyllide are added on the plate; and (c) selecting the filter disc where the growth of the mutant bacteria is observed, wherein the bacteria to be mutated is Rhodobacter sphaeroides, Rhodospirillum rubrum, Rhodopseudomonas palustris, Allochromatium vinosum, Chlorobium tepidum or Chloroflexus aurantiacus. Further, an adding weight of chlorophyllide is 0.1 to 100 mM.
Abstract:
본 발명은 카르복실기 일부가 아민기로 치환된 폴리감마글루탐산과 친유성 화합물의 복합체로 구성된 나노마이셀에 관한 것으로, 더욱 자세하게는 카르복실기 일부가 아민기로 치환된 폴리감마글루탐산과 친유성 화합물의 복합체로 구성된 나노마이셀 및 이의 제조방법과 상기 나노마이셀의 점막 점착특성을 이용한 약물전달체에 관한 것이다. 본 발명에 따른 생체 유래 천연고분자인 폴리감마글루탐산을 기반으로 한 나노마이셀 약물전달체를 점막 부위의 약물전달 분야에 활용함으로써, 약물의 생체 안정성 및 유효성 등을 향상시킬 수 있다.