• Title/Summary/Keyword: Hibiscus

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Phytoremediation Potential of Kenaf (Hibiscus cannabinus L.), Mesta (Hibiscus sabdariffa L.), and Jute (Corchorus capsularis L.) in Arsenic-contaminated Soil

  • Uddin Nizam, M.;Wahid-U-Zzaman, M.;Mokhlesur Rahman, M.;Kim, Jang-Eok
    • Korean Journal of Environmental Agriculture
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    • v.35 no.2
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    • pp.111-120
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    • 2016
  • BACKGROUND: Arsenic (As)-contaminated groundwater used for long-term irrigation has emerged as a serious problem by adding As to soils. Phytoremediation potential of fiber crops viz., kenaf (Hibiscus cannabinus L.), mesta (Hibiscus sabdariffa L.), and jute (Corchorus capsularis L.) was studied to clean up As-contaminated soil.METHODS AND RESULTS: Varieties of three fiber crops were selected in this study. Seeds of kenaf, mesta, and jute varieties were germinated in As-contaminated soil. Uptake of As by shoot was significantly higher than that by root in the contaminated soil. In As-contaminated soil, kenaf and mesta varieties accumulated more As, than did jute varieties. In the plant parts above ground, mainly the shoots, the highest As absorption was recorded in kenaf cv. HC-3, followed by kenaf cv. HC-95. Kenaf varieties produced more biomass. In terms of higher plant biomass production, and As absorption, kenaf varieties showed considerable potential to remediate As-contaminated soil.CONCLUSION: The overall As absorption and phytoremediation potentiality of plant varieties were in the order of kenaf cv. HC-3 > kenaf cv. HC-95 > mesta cv. Samu-93 > jute cv. CVE-3 > jute cv. BJC-7370. All varieties of kenaf, mesta, and jute could be considered for an appropriate green plant-based remediation technology in As-contaminated soil.

Exfoliation of abalone, Haliotis discus hannai using edible plants (식용작물을 이용한 전복 박리)

  • Kim, Wi-Sik;Kim, Jong-Oh;Oh, Myung-Joo
    • Journal of fish pathology
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    • v.30 no.1
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    • pp.63-66
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    • 2017
  • Twenty nine edible plants were selected in order to study their exfoliation effect on abalone Haliotis discus hannai from its substrate. Exfoliation was observed in spearmint Mentha spicata, lemon balm Melissa officinalis, rose flower, onion Allium cepa, wasabi powder, mustard powder, omija Schizandra Chinensis, and hibiscus Hibiscus sabdariffa solutions. In particular, both the omija and hibiscus solutions exfoliated over 90% of the abalone. In field tests, 3% and 4% omija solutions exfoliated 93.6% (850/908) and 97.1% (810/834) of abalone, respectively, whereas 3% and 4% hibiscus solutions exfoliated 96.1% (780/812) and 97.4% (700/719), respectively. The detached abalone were recovered within 1 min 39 seconds. These results indicate that the omija and hibiscus solutions (3% and 4%) may be useful in the exfoliation of abalone.

Antimicrobial activities of edible plant extracts against oral bacteria (식용 식물추출물의 구강 세균에 대한 항균 활성)

  • Lee, Jihye;Kim, Yeona;Kim, Dong Chung;Chae, Hee Jeong
    • Journal of Applied Biological Chemistry
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    • v.63 no.1
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    • pp.61-67
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    • 2020
  • Thirty-five edible plants were tested against oral bacteria (Streptococcus mutans, Lactobacillus casei, Staphylococcus epidermidis, Klebsiella pneumonia). The edible plants were extracted using 70% ethanol as a solvent. Among the thirty-five edible plants, hibiscus (Hibiscus sabdariffa) extract was selected as an effective antibacterial source because it showed the lowest minimum inhibitory concentration. The antimicrobial substances of hibiscus extract were very stable at acidic condition and at wide range of temperature 4-75 ℃. The total polyphenol and flavonoid contents of hibiscus extract were 130.5 and 25.7 mg/g, respectively. Also hibiscus extract showed a high degree of antioxidant activity.

Combination Dyeing of Silk Fabrics with Hibiscus flowers and Persimmon Juice Extract (히비스커스 꽃 추출액과 감물을 이용한 견직물의 복합염색)

  • Cho, Im Sun;Lee, Jeong Sook
    • Fashion & Textile Research Journal
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    • v.17 no.3
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    • pp.476-485
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    • 2015
  • The purpose of this research is to analyze the effects of persimmon juice and hibiscus flowers extract to perform combination dyeing of silk fabrics, with respect to color changes, fastness, and functionality. The optimal conditions as a result, were shown at 100% of dye concentration, $40^{\circ}C$ of dyeing temperature and 30 minutes of dyeing time while in terms of dye uptake depending on the kind of mordants and methods. The highest K/S value was recorded at pH 3, pre-mordants of $CuSO_4$, and $SnCl_2$, post-mordanting. After repeated dyeing and post-mordanting, various color change occurred with mordant treatments. Color fastness of dyed fabrics with hibiscus flowers extract was improve considerably by combination dyeing with persimmon juice extract. In aspects of functional properties, it showed excellent results of 99% deodorization rate, 99.9% Staphylococcus aureus rate and 99.9% Klebsiella pneumoniae.

Effect of reactive oxygen species on floral senescence in Hibiscus syriacus L. (활성산소종이 무궁화 꽃의 노화에 미치는 영향)

  • Seo, Sang-Kyu;Kim, Sun-Hyung;Lee, Gung-Pyo;Kang, Seung-Won
    • Journal of Plant Biotechnology
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    • v.36 no.2
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    • pp.179-183
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    • 2009
  • To understand the effect of reactive oxygen species (ROS) on floral senescence in Hibiscus syriacus L., we have investigated change in relative water potential, malondialdehyde (MDA) content, H_2O_2 content and the activity of antioxidative enzymes in the petals during flower opening and senescence. Hibiscus flowers were achieved full bloom at early morning and started to in-rolling and showed petal in-rolling over than 50% at 24 h and 36 h after full bloom, respectively. The flower was a decrease in fresh weight by 30% and showed water loss with floral senescence. MDA content and activity of antioxidative enzymes such as APX, GR and CAT were showed no significant change until 36 h after full bloom. In the flower 48 h after full bloom that showed complete petal in-rolling and wilting, however, activity of antioxidative enzymes and H_2O_2 content was greatly increased as compared with 0 h after full bloom. These results suggest that reactive oxygen species are related to accelerating the later senescence more than inducing the early senescence during Hibiscus flower senescence.

Antimicrobial Activity of Hibiscus sabdariffa L. (Roselle) Powder against Food-Borne Pathogens Present in Dairy Products: Preliminary Study

  • Lim, Hyun-Woo;Seo, Kun-Ho;Chon, Jung-Whan;Song, Kwang-Young
    • Journal of Dairy Science and Biotechnology
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    • v.38 no.1
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    • pp.37-44
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    • 2020
  • The antimicrobial activity of the ethanol extract of Hibiscus sabdariffa L. (Roselle) powder against various food-borne pathogens was tested using the lawn diffusion assay. The results showed that the ethanol extract exhibited antimicrobial activities against Staphylococcus aureus (total inhibition), Salmonella enteritidis (partial inhibition), Listeria monocytogenes (partial inhibition), Escherichia coli (partial inhibition), Cronobacter sakazakii (partial inhibition), and Bacillus cereus (partial inhibition). Therefore, it is strongly recommended that Hibiscus sabdariffa L. (Roselle) should be considered for use as a natural food-grade additive for the inhibition of various food-borne pathogens, including both gram-positive and gram-negative pathogens, and the improvement of the overall quality of various dairy products, including milk.

Studies on the Constituents of Hibiscus syriacus (I) (무궁화나무의 성분 및 생물활성에 관한 연구(I))

  • Lee, In-Kyoung;Ryoo, In-Ja;Choung, Dong-Ho;Han, Kyou-Hoon;Yun, Bong-Sik;Yoo, Ick-Dong
    • Korean Journal of Pharmacognosy
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    • v.28 no.3
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    • pp.112-116
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    • 1997
  • Hibiscus syriacus L. (Malvaceae) is widely distributed over Korean, China, India and Siberia. The dried flower of Hibiscus syriacus is used as a folk medicine for curing of hematochezia, dysentery, obstruction due to wind-phlegm, regurgitation, and vomiting of food, and the dried root bark is used antipyretic, anthelmintic and antifungal agents. From a chloroform extract of root bark of this plant, compound I, II, and III were isolated and the structures were elucidated by various spectroscopic analyses. These compounds were identified as syringaresinol. E-N-feruloyltyramine, and Z-N-feruloyltyramine, respectively and were isolated from this plant for the first time. Compound II and III exhibited lipid peroxidation inhibitory activities with $IC_{50}$ of 15.5 and 28.6 ${\mu}g/ml$, respectively.

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Immunostimulatory Activity of Hibiscus syriacus L. Leaves in Mouse Macrophages, RAW264.7 cells, and Immunosuppressed Mice

  • Na Gyeong Geum;Ju Hyeong Yu;So Jung Park;Min Yeong Choi;Jae Won Lee;Gwang Hun Park;Hae-Yun Kwon;Jin Boo Jeong
    • Korean Journal of Plant Resources
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    • v.35 no.6
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    • pp.697-703
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    • 2022
  • Under the COVID-19 pandemic, interest in immune enhancement is increasing. Although the immune-enhancing activity of plants of the genus Hibiscus has been reported, there is no study on the immune-enhancing activity of H. syriacus. Thus, in this study, we investigated the immune-enhancing activity of Hibiscus syriacus leaves (HSL) in mouse macrophages, RAW264.7 cells, and immunosuppressed mice. HSL increased the production of immunostimulatory factors such as nitric oxide (NO), inducible nitric oxide synthase (iNOS), interleukin-1β (IL-1β), and tumor necrosis factor-α (TNF-α) and activated the phagocytosis in RAW264.7 cells. The HSL-mediated production of immunostimulatory factors was dependent on toll-like receptor 4 (TLR4), p38, and c-Jun N-terminal kinase (JNK) in RAW264.7 cells. In the immunosuppressed mouse model, HSL increased the spleen index, the levels of the cytokines, and the numbers of lymphocytes, neutrophils, and monocytes. Taken together, HSL may be considered to have immune-enhancing activity and be expected to be used as a potential immune-enhancing agent.

Effect of Soil pH on Growth and Flower Color in Hibiscus siriacus L. (토양산도가 무궁화의 생장 및 화색에 미치는 영향)

  • Park Hyung-Soon;Chung Hun-Gwan;Kim Sea-Hyun;Chung Dong-Jun;Han Jin-Gyu;Cho Yoon-Jin
    • Korean Journal of Plant Resources
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    • v.19 no.1
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    • pp.144-149
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    • 2006
  • This is a study on relationship between soil pH and flower color and growth of Hibiscus siriacus L, looking for the pH range to result the most ideal flower color. I anticipate this study result will lay a foundation of improved breeding plan of Hibiscus siriacus L. According to the result of investigation and analysis on bleeding peculiarities by each soil pH, the numbers of leaves in Honghwarang and Younggwang reached the highest at pH 7: 188.73 and 135.87 respectively. Increased pH resulted the increased number of leaves. According to the result of investigation and analysis on color changes of four kinds of Hibiscus siriacus L. at various pH level, Honghwarang's L value gradually decreased from 17.05 to 12.26 at pH increase while a value increased from 16.37 to 20.91.

Neuropharmacological screening of the methanolic extract of Hibiscus vitifolius flowers

  • Seethalakshmi, S;Chamundeeswari, D;Rani, S Jamuna;Parvathavardhini, S;Vasantha, J
    • Advances in Traditional Medicine
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    • v.5 no.4
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    • pp.331-335
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    • 2005
  • The methanolic extract of Hibiscus vitifolius flowers (HVE), was evaluated for neurophamacological activities by carrying out rota rod, locomotor activity and traction performance in mice and swim endurance activity in rats in different dosages (10, 30 and 100mg/kg body weight). HVE showed a significant effect on central nervous system by increasing the time taken for rota rod, traction performance and locomotor activity while swimming time was found to be decreased when compared to normal control animals. These results suggest that HVE possess significant anxiolytic and anti depressant activity which may be attributed to the presence of flavonoid in HVE.