• Title/Summary/Keyword: 무화과

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무화과잼의 제조와 그 품질특성

  • 양영택;유철훈;임자훈;고정삼
    • Proceedings of the Korean Society of Postharvest Science and Technology of Agricultural Products Conference
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    • 2001.06a
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    • pp.123-123
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    • 2001

Purification and Identification of Antimicrobial Substances in Phenolic Fraction of Fig Leaves (무화과잎 페놀성 분획중의 항미생물 활성물질의 정제 및 동정)

  • Kang, Seong-Kuk;Chung, Dong-Ok;Chung, Hee-Jong
    • Applied Biological Chemistry
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    • v.38 no.4
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    • pp.293-296
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    • 1995
  • Fig leaves were extracted with methanol and then fractionated with ethyl acetate and various buffers to get active fractions and determined the antimicrobial activities. The acidic and phenolic fractions fractionated from the methanol extract of fig leaves showed the strong antimicrobial activities, but the basic and neutral fractions did not show any activities. The degree of antimicrobial activities of phenolic fraction against tested bacteria was higher than those of acidic fraction, but these against yeasts and mold were almost equivalent to those of acidic fraction. Especially, phenolic fraction was mostly affected on Staphylococcus aureus and Pseudomonas aeruginosa. Four antimicrobial substances purified from the phenolic fraction which showed the strongest antimicrobial activities among the fractions from fig leaves, were identified as psoralen($C_{11}H_{6}O_{3}$, MW. 186), bergapten($C_{12}H_{8}O_{4}$, MW. 216), ${\beta}$-sitosterol($C_{29}H_{50}O$, MW. 414) and umbelliferone ($C_{9}H_{6}O_{3}$, MW. 162).

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Processing of Low Sugar Fig Jam for Marketable Production (저당성 무화과 잼의 상품성 제고)

  • Hou, Won-Nyoung;Kim, Myoung-Hwa;Go, Eun-Kyoung
    • Korean Journal of Food Science and Technology
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    • v.31 no.3
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    • pp.651-657
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    • 1999
  • These experiments focused on processing low sugar fig jam having marketability by selected substitute for extracted and purified pectinesterase (PE), colorant for colour improvement, food additive to make texture better, and stabilizer for stable storage. Cherry tomato pulp as PE substitute to hydrolyze pectin substance in fig pulp into low-methoxyl pectin was most effective among used vegetables and fruits pulp. Carmacid-R among natural colorants for imprving colour, addition of 20% starch syrup as sugar substitute for texture and addition of $MULTIPHOSE^{TM}$ for red colour change control at cold storage were effective. The low sugar fig jam processed by using the above selected materials showed higher score than others (typical jam and orange PE low sugar fig jam) for colour in sensory evaluation and did no significant difference in taste, odor, texture and overall acceptability.

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Identification of Pseudocercospora bolleana Associated with Angular Leaf Spot on Common Fig in Korea (무화과나무의 모무늬잎마름 증상에 관여하는 Pseudocercospora bolleana 동정)

  • Choi, In-Young;Choi, Young-Joon;Lee, Chong-Kyu;Shin, Hyeon-Dong
    • The Korean Journal of Mycology
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    • v.49 no.4
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    • pp.539-545
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    • 2021
  • A cercosporoid fungus associated with angular leaf spots on the leaves of common fig (Ficus carica) in Korea is known to be morphologically similar to Passalora, but phylogenetically similar to Pseudocercospora. To clarify the ambiguity, six fig samples with angular leaf spots were collected and examined using a microscope, and two representative isolates were sequenced for multiple genes. The morphological characteristics were consistent with previous descriptions of Passalora bolleana. Molecular phylogenetic analysis based on the internal transcribed spacer and large subunit ribosomal DNA (rDNA) regions showed that the Korean isolates, as well as previously published Korean and Romanian isolates, formed a well-supported group in the clade of Pseudocercospora species. Consequently, the current Korean isolates should be correctly described as Pseudocercospora bolleana. Additionally, Pseudocercospora fici-caricae, a cercosporoid fungus previously described as a leaf pathogen on common fig in Taiwan and Korea, was also compared and discussed.

Antibacterial Effect of Various Fermentation Products and Identification of Differentially Expressed Genes of E.coli (다양한 발효액의 항균효과와 대장균의 유전적 변화에 미치는 영향)

  • Heo, Jihye
    • Korean Journal of Clinical Laboratory Science
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    • v.54 no.2
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    • pp.119-124
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    • 2022
  • Pseudomonas aeruginosa (P. aeruginosa), Escherichia coli (E. coli) and Staphylococcus aureus (S. aureus) are typical opportunistic pathogens. Moreover, these bacteria are known to possess multidrug-resistant (MDR) properties. This study investigates the antimicrobial activity of six fermented products, which have varying efficacies against P. aeruginosa, E. coli, and S. aureus. To identify novel candidate genes, differential expression analysis was performed using an annealing control primer. In the disk diffusion method, Fig vinegar (FV) and Diospyros kaki Thunb vinegar (DTV) showed the greatest increase in inhibition compared to other fermented products, whereas fermented Korean traditional nature herb (FKTNH) had no antibacterial effect. This study identified down-regulation of Escherichia coli O157:H7 ompW gene for outer membrane protein W, whereas gene for synthetic construct Lao1 gene for L-amino acid oxidase were up-regulated in E. coli treated with 5% FV. Consuming fermented vinegar helps prevent bacterial infections. Especially, FV and DTV are potentially useful alternative natural products for multidrug resistance. Furthermore, both are expected to be used as effective natural antimicrobial agents, such as disinfectants.