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Liu, X. J.; Huang, Li; Xu, Xiaohe; Gu, Hongchen; Fu, Xin

doi:10.1023/a:1006732719196

Cited by 9 publications

(4 citation statements)

References 3 publications

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“…Antioxidants work by donating one electron to an oxidant compound, so that the activity of these oxidant compounds can be inhibited. Antioxidants function to stabilize free radicals, by supplementing electron deficiencies and inhibiting the occurrence of chain reactions of free radical formation (Astuti, 2008;Malangngi, Sangi and Paendong, 2012).…”

Section: Resultsmentioning

confidence: 99%

“…Free radicals are unstable, very reactive and can take electrons from other molecules in an effort to get an electron pair. These electron-losing molecules can be reactive (Astuti, 2008;Djamil and Anelia, 2009;Selawa, Runtuwene and Citraningtyas, 2013).…”

Section: Introductionmentioning

confidence: 99%

“…In an effort to fulfill its electron peculiarities, free radicals that have unpaired electrons will rapidly attract electrons from surrounding biological macromolecules, such as proteins, nucleic acids and deoxyribonucleic acid (DNA). If the oxidized and degraded macromolecules are part of cells or organelles, it can cause damage to these cells (Astuti, 2008).…”

Section: Introductionmentioning

confidence: 99%

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Activity of Compounds on Seaweed Eucheuma cottonii Extract as Antioxidant Candidate to Prevent Effects of Free Radical in Water Pollution

Wulandari

Kilawati

Fadjar

2018

RJLS

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Water pollution can make many problems such as, the incidence of disease and poisoning. Pollution in water can produce free radicals and it is can trigger of disease for aquatic organisms. There are some efforts that can be done to provide this problem, such as chemical compound that can reduce the reaction of free radicals. Antioxidants are one of the chemical compounds that can reduce the activity of free radicals. Eucheuma cottonii is the one of a seaweed that has many in antioxidant compounds, such as phenol compounds, but it is also rich in iodine fiber and other important minerals. The method used in this research is descriptive explorative and experimental method. This research was conducted with several stages of seaweed extraction. Identification of Eucheuma cottonii extract is using FTIR test. The last stage is an antioxidant activity test that includes DPPH test (1,1-diphenyl-2-picrilhidrazil) and Inhibition Concentration 50 (IC 50). The results obtained in this study were based on FTIR test of antioxidant compound in Eucheuma cottonii seaweed extract. The one of compounds that have antioxidant activity include galaktosa-4-sulfat. Based on the results of antioxidant activity test using DPPH obtained that seaweed extract Eucheuma cottonii active as an antioxidant to ward off free radicals in the waters. The concentration of Eucheuma cottonii seaweed extract for preventive 50% concentration of DPPH is 39,926 ppm.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Activity of Compounds on Seaweed Eucheuma cottonii Extract as Antioxidant Candidate to Prevent Effects of Free Radical in Water Pollution

Wulandari

Kilawati

Fadjar

2018

RJLS

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“…The rheological behaviors of Si 3 N 4 slurries have been investigated by changing the concentration of dispersant, pH value of dispersing medium and other parameters. These parameters are excessive and interactional, so statistic pattern recognition can be used to predict the processing parameters [5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Silicon Nitride Ceramic Prepared by Colloidal Process

Liu

et al. 2007

KEM

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Advanced silicon nitride ceramic compact was prepared by colloidal process. The rheological behaviors of the Si3N4 powders were emphatically investigated. At the same time, the effects of the dispersant, pH value and ball milling time on the silicon nitride slurry were discussed. The results showed that the addition of the dispersant could shift the value of Zeta potential and improve the fluidity of silicon nitride slurries. The well fluidity can be achieved when the amount of the dispersant was 1.2wt%. Besides, a ball milling time of 8h was appropriate. Statistic pattern recognition was used to predict the processing parameters. Then the high density of green compact could be attained while the volume fraction of solid powders was up to 40%, and the fracture toughness of the sintered body reached 7.2MPa·m1/2. The microstructure of final sintered ceramic was observed by scanning electron microscope (SEM).

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Viscoelastic Properties of Concentrated Silicon Nitride Slurries

Liu

Luo

et al. 2006

Ceramic Transactions Series

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Untitled

Cited by 9 publications

References 3 publications

Activity of Compounds on Seaweed Eucheuma cottonii Extract as Antioxidant Candidate to Prevent Effects of Free Radical in Water Pollution

Activity of Compounds on Seaweed Eucheuma cottonii Extract as Antioxidant Candidate to Prevent Effects of Free Radical in Water Pollution

Silicon Nitride Ceramic Prepared by Colloidal Process

Viscoelastic Properties of Concentrated Silicon Nitride Slurries

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