• Title/Summary/Keyword: 1 ppm

Search Result 6,051, Processing Time 0.033 seconds

Anti-oxidative Activities of Commercial Edible Plant Extracts Distributed in Korea (국내 유통 중인 식용식물 추출물의 항산화효과)

  • Kim, Kyung-Bum;Yoo, Ki-Hwan;Park, Ha-Yan;Jeong, Jong-Moon
    • Applied Biological Chemistry
    • /
    • v.49 no.4
    • /
    • pp.328-333
    • /
    • 2006
  • Many plant extracts are known to have antioxidative effects. However, their activities can be reduced or disappeared during mass production process. The purpose of this study is to compare antioxidative effects of edible plant extracts distributed in Korea. forty three kinds of edible plant extracts commercially available in Korea were selected and investigated for their total phenolics contents and antioxidative potentials(DPPH radical and superoxide anion radical scavenging activities). In contents of total phenolics, the commercial plant extracts from Artemisia annua(whole plant), Ilex paraguariensis(leaf, Silybum marianum(fruit and leaf, Ulmus pumila(bark), Coliolus versicolor(fruit), and Curcuma longa(root and stem) contained over 70 mg/g of powder, DPPH radical scavenging activities($SC_{50}$, 50% scavenging concentration) of A. annua, I. paraguariensis, Pinus densiflora(leaf),S. marianum, U. pumila, and C. longa were $53.96{\pm}0.81\;ppm,\;24.61{\pm}2.12\;ppm,\;35.96{\pm}1.11\;ppm,\;57.46{\pm}2.13\;ppm,\;55.25{\pm}1.65\;ppm\;and\;12.99{\pm}1.67ppm$, respectively, while that of positive control(vitamin C) was $3.86{\pm}0.81\;ppm$. $SC_{50}$ values against superoxide anion radical of A. annua, Cinnamomum zeylanicum(bark), I. paraguariensis, Rubus coreanus(fruit and leaf), Morus alba(leaf), P. densiflora, S. marianum, U. pumila, C. versicolor, C. longa, Perilla frutescens var. acuta(leaf), and H. sabdariffa(leaf and newer) were $53.21{\pm}1.83ppm,\;50.12{\pm}2.12ppm,\;5.59{\pm}0.84ppm,\;41.60{\pm}8.93ppm,\;20.19{\pm}0.97ppm,\;15.19{\pm}1.66ppm,\;21.20{\pm}1.88ppm,\;15.71{\pm}0.91ppm,\;55.48{\pm}2.42ppm,\;52.12{\pm}2.44ppm,\;23.80{\pm}1.98ppm\;and\;11.14{\pm}0.51ppm$, respectively($SC_{50}$ value of vitamin C: $9.61{\pm}0.93ppm$). In particular, both 1 paraguariensis and P. densiflora had high content of phenolics as well as high scavenging activities of DPPH radical and superoxide anion radical. Consequently, above two commercial extracts may be useful as a source of antioxidative nutraceutics.

Chemical Components of Korean Atractylodes japonica Koidz (한국산 삽주의 화학성분)

  • 강은미;심기환
    • Food Science and Preservation
    • /
    • v.8 no.1
    • /
    • pp.79-85
    • /
    • 2001
  • To study the availability of the Atractylodes japonica Koidz. as ingredients for functional flood, the properties of chemical components were investigated and the results were followed. Among general components of Korean A. japonica, total sugars portions from fresh and dried samples took 31.3% and 46.8%, respectively. Mineral contents were K 4,038.9 ppm, P 1,698.5 ppm, Ca 731.8 ppm, Mg 477.1 ppm, Na 87.2 ppm, Fe 56.4 ppm, Zn 22.4 ppm and Mn 13.5 ppm in fresh sample, and K 8,738.9 ppm, P 3,511.6 ppm, Ca 966.1 ppm, Mg 912.8 ppm, Na 147.4 ppm, Fe 113.9 ppm, Zn 46.7 ppm and Mn 23.5 ppm in dried sample. Sucrose in Korean A. japonica was 0.88% in fresh sample and 3.44% in dried sample, and it was main component of sugar. The largest amount of organic acid in Korean A. japonica was tartaric acid, which was 3,849.0 mg% in fresh sample main and 5,305.5 mg% in dried sample. The main amino acid of total amino acids in fresh and dried samples were arginine 291.3 mg% and proline 567.8 mg%, respectively. The main fatty acid of fresh and dried samples were behenic acid 4.0% and linoleic acid 17.99%, respectively. The most distinctive volatile flavor compound was furanodiene which took 17.91% in flash and 40.69% in dried Korean A. japonica.

  • PDF

SEASONAL VARIATIONS OF THE CONTENTS OF INORGANIC CONSERVATIVE CONSTITUENTS OF NAGDONG RIVER WATER AT MULGEUM INTAKE STATION OF BUSAN CITY WATER FROM JANUARY 1979 TO APRIL 1980 (낙동강 물금취수장 상수도 원수의 무기보존성분량의 연간변동에 대하여(1979년 1월-1980년 4월))

  • LEE Bae Jung;WON Jung Hun
    • Korean Journal of Fisheries and Aquatic Sciences
    • /
    • v.13 no.3
    • /
    • pp.103-108
    • /
    • 1980
  • The contents of inorganic conservative constituents in Nagdong River water were determined at Mulgeum where the intake station for Busan city water is located. Samples were taken at intervals of one hour from 7 a.m. to 7 p.m. at spring and neap tides of every month from January 1979 to April 1980. Annual ranges and means of the chemical constituents were as follows: electrical conductivity $99-912\mu\mho/cm,\;200\mu\mho/cm;$ chlorides 6.0-256 ppm, 17.2 ppm; sulfates 4.1-37.9 ppm, 23.5 ppm; calcium 4.2-28 ppm, 13 ppm; magnesium 2.2-23 ppm, 5.6 ppm; sodium 5,0-126 ppm, 14 ppm; and potassium 1.2-10.8 ppm, 2.6 ppm respectively. At several times in this period, the concentrations of chloride ion exceeded 150 ppm that is the criteria for drinking water. The chloride ion concentration was higher at spring tides than that at neap tides and the contents of inorganic conservative constituents were higher in winter than those in summer. The chloride ion concentration showed the highest value at Mulgeum about 4 hors after the high water in Busan harbour.

  • PDF

Effect of 1-Methylcyclopropene Treatment on the Fruit Quality of Pear c.v. "Hwasan" during the Storage at Ambient Temperature (1-MCP 처리가 '화산' 배의 상온 저장 중 품질에 미치는 영향)

  • Park, Yong-Seo;Lee, Pil-Ho;Heo, Buk-Gu
    • Food Science and Preservation
    • /
    • v.17 no.5
    • /
    • pp.595-601
    • /
    • 2010
  • We investigated the effects of 1-methylcyclopropene (1-MCP) treatment (0, 0.5, and 1.5 ppm) for 16 hours, followed by storage at ambient temperature, on the qualities of pears (Pyrus pyrifolia c.v. "Hwasan"). Color differences, as measured using the Hunter L, a, and b values, showed the greatest decreases before storage, and 8 weeks after storage, when fruit was exposed to 1.5 ppm 1-MCP. The sensory qualities of c.v. "Hwasan" pears were good until 4 weeks of storage after treatment with 0 ppm 1-MCP, until 6 weeks when 0.5 ppm 1-MCP was employed, and until 7 weeks when 1.5 ppm 1-MCP treatment was performed. Fruit and storage quality in terms of all of hardness, sugar content, PPO activity, respiration amount, and ethylene production increased in the 8 weeks after application of 1.5 ppm 1-MCP. Consequently, it seems that 1-MCP treatment, especially at 1.5 ppm, before storage of pears at ambient temperature, effectively improves the quality of pears of c.v. "Hwasan".

Optimal CO2 level for cultivation of Pleurotus eryngii (큰느타리버섯 재배의 최적 CO2 조건)

  • Ryu, Jae-San;Kim, Min-Keun;Cho, Sook-Hyun;Yun, Young-Chul;Seo, Won-Myung;Lee, Hyun-Sook
    • Journal of Mushroom
    • /
    • v.3 no.3
    • /
    • pp.95-99
    • /
    • 2005
  • Carbon dioxide($CO_2$) promotes development of primordia and depress differentiation of sporophore and gill containing basidia, have an effect on quality. This experiments were conducted to elucidate optimal level of $CO_2$ for king oyster mushroom(Pleurotus eryngii). King oyster mushroom was cultivated under 1,600, 2,400, and 3,200ppm $CO_2$. Harvest ratio in normal plot were 98.6, 99.3, and 93.8% at 1,600, 2,400, 3,200ppm, respectively, so 2,400ppm is optimal. The yield per bottle was 102.5g at 2,400ppm, better than 99.7g at 1,600ppm, The $CO_2$ concentration of 2,400ppm was also the best condition for quality, 6.1 at 2,400ppm was 115% of 1,600ppm's. In thinning treatment plot, quality at 2,400ppm was 9.5 better than 1,600ppm whose quality was 9.4. The yields per bottle were 90.7, 98.2, 77.3g at 1,600, 2,400, 3,200ppm respectively. These results show that 2,400ppm was optimal $CO_2$ concentration for quantity of King Oyster mushroom as well as quality.

  • PDF

무기담채를 이용한 폐수처리

  • Cha, Wol-Seok;Gwon, Gyu-Hyeok;Choe, Hyeong-Il;Jeong, Gyeong-Hun;Lee, Dong-Byeong;Jeong, Gil-Rok
    • 한국생물공학회:학술대회논문집
    • /
    • 2003.04a
    • /
    • pp.343-347
    • /
    • 2003
  • Power of loess ball on nitrogen and phosphorous removal in wastewater treatment were investigated. flow line A ( anaerobic${\rightarrow}$oxic${\rightarrow}$anoxic(organic source methanol)${\rightarrow}$p-absorption) showed the results of T-P 0.5, T-N 1.0, and COD 10ppm bellow, and flow line B ( oxic${\rightarrow}$anoxic, organic source: methanol${\rightarrow}$p-absorption) showed the results of T-P 0.3, T-N 5.0, and COD 15 ppm bellow. flow line C ( anaerobic${\rightarrow}$oxic${\rightarrow}$anoxic, organic source: wastewater ${\rightarrow}$ p-absorption) showed the results of T-P 0.6, T-N 10, and COD 15 ppm bellow, and flow line D ( oxic${\rightarrow}$anoxic, organic source: methanol${\rightarrow}$p-absorption) showed the results of T-P 1, T-N 8m, and COD 20 ppm bellow. So the results of these experiments showed the probability of loess ball in wastewater treatment.

  • PDF

Growth and Survival on Different Kinds of Sediment Improvements of Early Spats of the Hard Clam, Meretrix petechialis (LAMARCK) (말백합, Meretrix petechialis (LAMARCK) 초기치패의 저질개선제 종류에 따른 성장 및 생존)

  • Kim, Byeong Hak;Cho, Kee Chae;Byun, Soon Gyu;Kim, Min Chul;Jee, Young Ju
    • The Korean Journal of Malacology
    • /
    • v.28 no.2
    • /
    • pp.125-129
    • /
    • 2012
  • The study describes growth and survival on different kinds of sediment improvements of early spats of the hard clam, Meretrix petechialis. Specimens of the mature hard clam were collected in the intertidal zone of Yeonggwang, Korea, July 2011. After transportation, early spats(shell length $196{\pm}14{\mu}m$) collected in mature hard clam were used. Experiment period were July 7 to August 6 in 2011 (30 days). Sediment improvements used iodine(10 ppm), hydrogen peroxide($H_2O_2$, 5 ppm), sodium hypochlorite (NaClO, 100 ppm), chlorine dioxide($ClO_2$, 100 ppm) and potassium permanganate ($KMnO_4$, 5 ppm). After cultured during 30 days, shell length growth of hard clam were observed $1.04{\pm}0.26mm$ in sodium hypochlorite 100 ppm, $1.03{\pm}0.25mm$ in chlorine dioxide 100 ppm and $1.01{\pm}0.28mm$ in iodine 10 ppm. Survival rate were 31.4% in chlorine dioxide 100 ppm, 12.1% in sodium hypochlorite 100 ppm, 11.6% in iodine 10 ppm, 1.5% in hydrogen peroxide 5 ppm and 0% in potassium permanganate 5 ppm.

Antimicrobial activity of dental polishing bur material with fluoride ion (불소이온을 함유한 연마용 버 재료의 항균력 연구)

  • Jeong, Insun;Kim, Ji-Hyun;Yun, Kwi-Dug
    • The Journal of Korean Academy of Prosthodontics
    • /
    • v.58 no.3
    • /
    • pp.201-206
    • /
    • 2020
  • Purpose: The purpose of this study is to evaluate the antimicrobial activity on the dental bur with fluoride for S. mutans. Materials and methods: 0 ppm, 300 ppm, 500 ppm, 1,000 ppm, 1,450 ppm fluoride ion is added to a specimen. S. mutans was incubated for 24 hours, the number of S. mutans were counted. Kruskal-Wallis and MannWhitney analysis were used SPSS 25.0 (IBM SPSS 25.0, Chicago, IL, USA). Results: The mean S. mutans counts of 0 ppm, 300 ppm, 500 ppm, 1,000 ppm, and 1,450 ppm were 374.0 ± 12.6, 251.0 ± 66.7, 111.4 ± 35.6, 41.6 ± 11.7 and 13.2 ± 4.6, respectively. All groups except the control and 300 ppm showed statistically significant. Conclusion: Thus, more than 500 ppm fluoride ion showed the statistically significant antimicrobial activity. 1,450 ppm group showed the highest antimicrobial activity. This study showed the clinical possibility for dental caries protection and antimicrobial activity of dental bur.

Barley Haploid Production Using Interspecific Crosses between Hordeum vulgare and H. bulbosum (야생종 H. bulbosum을 이용한 보리 반수체 육성)

  • Kim, B.Y.;Johnson, Duane L.;Kim, D.U.
    • KOREAN JOURNAL OF CROP SCIENCE
    • /
    • v.33 no.4
    • /
    • pp.392-399
    • /
    • 1988
  • The experiments were conducted to establish the effective barley haploid production system using interspecific crosses. Three spring barley cultivars. Bruce. Klages and Rodeo were used for this experiment. 1, 687 florets of three barley cultivars were crossed with bulbosum pollens. 1, 079 seeds were harvested and obtained 834 embryos so that seed set rate and embryo production rate were 64% and 77%, respectively. IAA effect was superior to NAA for root development and 1 ppm concentration of IAA gave the best result among five concentrations; 0ppm, 1ppm., 5ppm, 10ppm and 30ppm.

  • PDF

A Survey of Pesticide Residues of Citrus Fruits and Citrus Orchard Soil in Jeju Island - Part 2. On the Pesticide Residue of Citrus Orchard Soil - (제주도(濟州道)의 감귤(柑橘)및 감귤원토양(柑橘園土壤)에 관(關)한 잔류농약조사(殘留農藥調査) - 제2보(第二報), 감귤원(柑橘園) 토양중(土壤中)의 농약잔류(農藥殘留)에 관(關)하여 -)

  • Lee, Kyu-Seung
    • Applied Biological Chemistry
    • /
    • v.23 no.3
    • /
    • pp.184-188
    • /
    • 1980
  • A survey of pesticide and copper residues of the citrus orchard soil was conducted during October 1979-June 1980 in Jeju, Seogwipo county. The citrus orchards were classified into five groups according to different cultivated period; 5 year orchard, 10 year orchard, 15 year orchard, 20 year orchard, and 30 year orchard. Each of the above samples was divided again to three layers of soil depth; the surface layer$(0{\sim}10cm)$, the middle layer $(10{\sim}20cm)$, and the bottom layer $(20{\sim}40cm)$. In this experiments, Kelthane and Akar, as well as copper residues were detected in all soil samples. Residue levels of above chemicals were increased in soils of orchard with longer cultivation periods, and at the same time, decreased with soil depth. The residues of those ranged as follows; a) from trace to 1.359ppm in Kelthane, b) from trace to 0.925ppm in Akar, and c) from trace to 40.734ppm in copper. It is noted that the average residues of Kelthane was 0.251ppm, Akar, 0.120ppm, and that of copper was 2.168ppm, respectively.

  • PDF