• Title/Summary/Keyword: Life-science industries

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A Study of Considering Things for Menu Development of Food Industries (외식업체의 메뉴 개발시 고려사항에 관한 연구)

  • 홍철희;김희아
    • Culinary science and hospitality research
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    • v.5 no.2
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    • pp.421-443
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    • 1999
  • The purpose of this study is to explore the considering things for menu development of food industries. there are many important factors to take into consideration. The results are as follows ; First, a good understandings of consumers' demand Second, considering of the regional characteristics Third, establishing of the exact target Fourth, careful thinking of a unit cost The national income and the quality of life have continued its growth in these days. so, Food industries have to develop the menu from consumer -oriented thinking. that is a key to success in food industries.

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Genomic Distribution of Simple Sequence Repeats in Brassica rapa

  • Hong, Chang Pyo;Piao, Zhong Yun;Kang, Tae Wook;Batley, Jacqueline;Yang, Tae-Jin;Hur, Yoon-Kang;Bhak, Jong;Park, Beom-Seok;Edwards, David;Lim, Yong Pyo
    • Molecules and Cells
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    • v.23 no.3
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    • pp.349-356
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    • 2007
  • Simple Sequence Repeats (SSRs) represent short tandem duplications found within all eukaryotic organisms. To examine the distribution of SSRs in the genome of Brassica rapa ssp. pekinensis, SSRs from different genomic regions representing 17.7 Mb of genomic sequence were surveyed. SSRs appear more abundant in non-coding regions (86.6%) than in coding regions (13.4%). Comparison of SSR densities in different genomic regions demonstrated that SSR density was greatest within the 5'-flanking regions of the predicted genes. The proportion of different repeat motifs varied between genomic regions, with trinucleotide SSRs more prevalent in predicted coding regions, reflecting the codon structure in these regions. SSRs were also preferentially associated with gene-rich regions, with peri-centromeric heterochromatin SSRs mostly associated with retrotransposons. These results indicate that the distribution of SSRs in the genome is non-random. Comparison of SSR abundance between B. rapa and the closely related species Arabidopsis thaliana suggests a greater abundance of SSRs in B. rapa, which may be due to the proposed genome triplication. Our results provide a comprehensive view of SSR genomic distribution and evolution in Brassica for comparison with the sequenced genomes of A. thaliana and Oryza sativa.

Genomic Insights of Weissella jogaejeotgali FOL01 Reveals Its Food Fermentation Ability and Human Gut Adaptive Potential for Probiotic Applications in Food Industries

  • Ku, Hye-Jin;Kim, You-Tae;Lee, Ju-Hoon
    • Journal of Microbiology and Biotechnology
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    • v.27 no.5
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    • pp.943-946
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    • 2017
  • Although the genus Leuconostoc, generally found in various fermented foods, has often been suggested to be a novel probiotic for food fermentation and health promotion, the strains in this genus showed low acid tolerance and low osmotic stress resistance activities, which are required for survival during food fermentation events. Recently, a novel species of Weissella, W. jogaejeotgali $FOL01^T$ (= KCCM 43128 = JCM 30580), was isolated from Korean fermented clams. To determine the genomic features of this new species, its genome was completely sequenced and analyzed. The genome consists of a circular chromosome of 2,114,163 bp of DNA with a G+C content of 38.8%, and the plasmid pFOL01 consists of 35,382 bp of DNA with a G+C content of 39.1%. The genome analysis showed its potential for use in food fermentation and osmotic stress resistance abilities for processing in food industries. In addition, this strain was predicted to have acid tolerance and adhesion to the mucosal layer for survival and colonization in the gut. Subsequent experiments substantiated these abilities, suggesting that W. jogaejeotgali may have probiotic potential and a high survival rate during food fermentation. Therefore, it may be suitable as a novel probiotic strain for various applications in food industries.

A Survey of the Brassica rapa Genome by BAC-End Sequence Analysis and Comparison with Arabidopsis thaliana

  • Hong, Chang Pyo;Plaha, Prikshit;Koo, Dal-Hoe;Yang, Tae-Jin;Choi, Su Ryun;Lee, Young Ki;Uhm, Taesik;Bang, Jae-Wook;Edwards, David;Bancroft, Ian;Park, Beom-Seok;Lee, Jungho;Lim, Yong Pyo
    • Molecules and Cells
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    • v.22 no.3
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    • pp.300-307
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    • 2006
  • Brassica rapa ssp. pekinensis (Chinese cabbage) is an economically important crop and a model plant for studies on polyploidization and phenotypic evolution. To gain an insight into the structure of the B. rapa genome we analyzed 12,017 BAC-end sequences for the presence of transposable elements (TEs), SSRs, centromeric satellite repeats and genes, and similarity to the closely related genome of Arabidopsis thaliana. TEs were estimated to occupy 14% of the genome, with 12.3% of the genome represented by retrotransposons. It was estimated that the B. rapa genome contains 43,000 genes, 1.6 times greater than the genome of A. thaliana. A number of centromeric satellite sequences, representing variations of a 176-bp consensus sequence, were identified. This sequence has undergone rapid evolution within the B. rapa genome and has diverged among the related species of Brassicaceae. A study of SSRs demonstrated a non-random distribution with a greater abundance within predicted intergenic regions. Our results provide an initial characterization of the genome of B. rapa and provide the basis for detailed analysis through whole-genome sequencing.

Curing Behavior and Tensile Strength of Elastomeric Polyester and Polyvinylidene Fluoride for Automotive Pre-primed Coatings (자동차용 Pre-primed 적용을 위한 Polyester 및 Polyvinylidene Fluoride 도료의 경화거동과 인장강도 특성)

  • Hwang, Hyeon-Deuk;Moon, Je-Ik;Lee, Yong-Ju;Kim, Hyun-Joong;Hyun, Jin-Ho;Noh, Seung Man;Kang, Choong Yeol;Lee, Jae-Woo;Nam, Joon Hyun;Park, Jong Myung
    • Journal of Adhesion and Interface
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    • v.10 no.4
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    • pp.155-161
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    • 2009
  • The most upcoming technical issue of automotive coating is the compact coating process. Pre-primed coating is the outstanding technology eliminating electro-deposition and primer coating process. The main properties of pre-primed coating for automotive are flexibility, corrosion resistance, and weldability. Therefore, we synthesized the conventional polyester, elastomeric polyester and polyvinylidene fluoride resins and evaluated their properties to use as weldable pre-primed automotive coatings. As the results of flexibility and curing behavior, the elastomeric polyester coating was most appropriate to use for the pre-primed automotive coatings.

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Identification and Quantitative Analysis of Flavonol Glycosides from Ginkgo biloba Leaves by High Performance Liquid Chromatography (고속액체크로마토그라피에 의한 은행잎중 Flavonoid Glycoside의 확인 및 정량)

  • Kang, Sam-Sik;Kim, Ju-Sun;Kwak, Wie-Jong;Kim, Ki-Hyup
    • Korean Journal of Pharmacognosy
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    • v.21 no.2
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    • pp.148-152
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    • 1990
  • Seven flavonol glycosides from the EtOAc fraction of Ginkgo biloba leaves were identified by high performance liquid chromatography. Separation by reversed phase chromatography on $Lichrosorb^{\circledR}$ RP-18 column was achieved by isocratic elution. The content of the major acylated flavonol glycoside, kaempferol 3-0-[$6'-O-{p}-coumaroyl-{\beta}-_D-glucosyl(1{\rightarrow}2)-{\alpha}-_L-rhamnoside$] was about 8.0% and 0.55% for EtOAc fraction and MeOH extract, respectively.

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Flavonoids from the Leaves of Ginkgo biloba (은행잎의 Flavonoid 성분에 관한 연구)

  • Kang, Sam-Sik;Kim, Ju-Sun;Kwak, Wie-Jong;Kim, Ki-Hyup
    • Korean Journal of Pharmacognosy
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    • v.21 no.2
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    • pp.111-120
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    • 1990
  • Five biflavones and sevenflavonolglycosideswereisolatedfromtheleaves of Ginkgo biloba. They were sciadopitysin(1), ginkgetin(2), isoginkgetin(3), bilobetin(4), amentoflavone(5), kaempferol 3-O-[$6'-O-{\rho}-coumaroyl-{\beta}-_D-glucopyranosyl(1{\rightarrow}2)-{\alpha}-_Lrhamnopyranoside$](6), quercetin 3-O-[$6'-O-{\rho}-coumaroyl-{\beta}-_D-glucopyranosyl(1{\rightarrow}2)-{\alpha}-_Lrhamnopyranoside$](8), rutinosides of kaempferol(7), isorhamnetin(9), quercetin(10), laricitrin(11), and kaempferol 3-O-($2',6'-{\alpha}-_L-dirhamnopyranosyl-{\beta}-_{D}-glucopyranoside$)(12). The structures were established by spectroscopic and chemical methods.

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Microwave Irradiation, A New Processing Method of Aconiti Tuber (마이크로파를 이용한 부자의 새로운 수치방법)

  • Yun-Choi, Hye-Sook;Yoo, Kyung-Sook;Lee, Sook-Youn;Lee, Youn-Hee;Kwak, Wie-Jong;Kim, Ki-Hyup
    • Korean Journal of Pharmacognosy
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    • v.21 no.4
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    • pp.284-289
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    • 1990
  • Crude Aconiti Tubers were irradiated with microwave for 5 or 10 min with or without $NaHCO_3$. Ten min-irradiation reduced the contents of aconitine and mesaconitine to the level of those of commercially available processed Aconiti tuber power which is prepared with the high pressure-high temperature technique. The contents of benzoylaconine of the 10 min-irradiated Aconiti tubers were also comparable to those of commerciallized processed Aconiti tuber powder. However, irradiation with 1% $NaHCO_3$ soln. resulted in the drastic reduction of all the three above alkaloids.

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Evaluation and Prediction of Corrosion Resistance of Epoxy Systems and Epoxy/Polyurethane Systems in Seawater Environment

  • Lee, Chul-Hwan;Shin, Chil-Seok;Baek, Kwang-Ki
    • Corrosion Science and Technology
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    • v.5 no.1
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    • pp.33-38
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    • 2006
  • Current coating practice requires the thickness of anti-corrosion organic coatings to be over $250{\mu}m$ for immersion parts of ships and offshore structures and the corrosion resistance of these coatings has been evaluated by destructive and qualitative analysis. Recently, Electrochemical Impedance Spectroscopy(EIS) method has been employed, as an alternative, to evaluate corrosion resistance of organic coatings. This method is characterized as being nondestructive, reproducible, and quantitative in evaluating aging of organic coatings. In this study, EIS method was adopted to quantitatively and effectively select the coating systems having optimized protective performance. Evaluations of several epoxy and epoxy/polyurethane coating systems typically used for ships and offshore structures were carried out in wet($50^{\circ}C$, $90^{\circ}C$) and dry(room temp.) environments to accelerate the degradation of the organic coatings. These results were compared with the conventional scribed(scratched) test results. The plausible prediction model for determining the remaining life-time of coating systems was also proposed based on variations of impedance data, FT-IR and $T_g$ measurements results.

Microbiologic Pollution of Indoor Air in Industrial Work-Places (산업체 작업환경의 실내 공기에서 미생물 오염도)

  • 강경희;장명웅
    • Journal of Life Science
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    • v.9 no.3
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    • pp.314-327
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    • 1999
  • This study was investigated to isolate identify the total bacteria and fungi from the indoor air of work-place of the shoes, paint, stainless steel, and plastic industries. The number of bacterial colonies on the nutrient agar plates were calculated by the open petridish method for 30 minutes in indoor air of work-places at the autumn and winter. The isolated bacteria were identified by Gram stain and biochemical test using API Staph and API 20E kits. The isolated fungal colonies were identified by gross appearance of the giant colonies and microscopic examination of their spore and hyphal characteristics on the slide culture method. The minimum inhibitory concentration (MIC) of several antibiotics against isolated bacteria was determined by the microdilution method with Mueller-Hinton broth. The 70-400 colonies in autumn and 54-236 colonies in winter were isolated from the indoor air of work-places of several industry. The isolation rates of Gram positive cocci, Gram positive bacilli, Gram negative bacilli, and Gram negative cocci were 46.3%, 19.8%, 17.3%, and 16.1%, respectively. In Gram positive cocci, the most strains were identified as Aerococcus spp, Micrococcus spp, and Staphylococcus spp. In Gram positive and negative bacilli, and Gram negative cocci were identified as Bacillus spp, Pseudomonas spp, and Neisseria spp, respectively. The frequently isolated fungi were Aspergillus spp, Penicillium spp and Rhizopus spp, respectively. The frequently isolated Aerococcus spp, Micrococcus spp, and Staphylococus spp were highly resistance against ampicillin, erythromycin, methicillin, and tetracycline. These results arouse our attention to microbiologic pollution in the indoor air of work-places of industries.

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