A Study on Antioxidant Activity of Ethanol Extract from Rumex crispus and Metal Adsorptivity of it's Root

Jeong, Kap-Seop

doi:10.5762/kais.2012.13.2.934

Cited by 3 publications

(1 citation statement)

References 10 publications

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“…Iron oxide (Fe 3 O 4 and γ-Fe 2 O 3 nanoparticles) is used as magnetic material for the heavy metal removals [8]. Natural plant roots used for lead adsorption and the adsorption rate was 88 percentage was achieved [9].Various types of carbon materials was used for water treatment [10][11][12]. Graphene oxide used as a potential carrier support for the metal oxide nanoparticles in the adsorption studies.…”

Section: Introductionmentioning

confidence: 99%

Removal of Heavy Metals using Amine Crosslinked Reduced Graphene Oxide

Babu¹,

Vinodh²,

Abidov³

et al. 2015

Advanced Science and Technology Letters

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Graphene oxide was synthesized by modified Hummers method and then reduced with hydrazine hydrate to obtain reduced graphene oxide. (3aminopropyl)trimethoxysilane used as a precursor for amine functionalized reduced graphene oxide. The amine functionalized nanoparticles were characterized using FT-IR, TGA, Raman, N 2 sorption, SEM and TEM techniques. The surface area was found to be 346 m 2 /g due to functionalization of amine over reduced graphene oxide. The amine functionalized nanoparticles were used as adsorbent for the removal of heavy metals from aqueous solution. The adsorption of heavy metal was high for the reduced graphene oxide nanocomposites when compared to bare amine functionalized nanoparticles. The maximum adsorption reached within fifteen minutes.

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Section: Introductionmentioning

confidence: 99%

Removal of Heavy Metals using Amine Crosslinked Reduced Graphene Oxide

Babu¹,

Vinodh²,

Abidov³

et al. 2015

Advanced Science and Technology Letters

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Polyphenol Contents of Rumex crispus Root Extract with Hot Water and its Antioxidative Effect

Yun¹,

Jeong

2012

Journal of Environmental Science International

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This study was conducted to investigate the extraction characteristics including total polyphenol compound content (TPC) and the antioxidative effect of Rumex crispus root extract on commercial corn oil. Extraction yield was increased with extraction temperature but decreased with extraction ratio. No significant differences in aromatics content were found among the extracts prepared with various extraction conditions; extraction ratio, extraction temperature, extraction pH and composition of extractant. Total flavonoid content of the extract was increased with extraction temperature and extraction pH, and highest value of it was found when extractant composition of ethanol in water was 75%. Total polyphenol compound content (TPC) of the extract with 10 fold extraction ratio showed the highest value, but no significant difference in TPC was found with extraction temperature. Reducing power and DPPH (α,α-diphenyl-β-picrylhydrazyl) radical scavenging ability (RSA) of the extract in spectrophotometric absorbance were decreased with extraction ratio but increased with extraction temperature and showed 63.1%~98.4% and 67.6%~86.7% of those of ascorbic acid in reducing power and DPPH RSA, respectively. The antioxidative effects of the extract on corn oil were 84.8~93.0% of that of commercial butylated hydroxytoluene, the antioxidant index value was highest when the ethanol composition to water in extractant was equal ratio. Key Words

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Extraction Characteristics, Antioxidative Effect and Preparation of Collagen Gel of Skate Skin Extracts

Kang

Jeong²

2012

Journal of the Korea Academia-Industrial cooperation Society

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To enhance the reutilization of waste skate skin for the functional food resources, the investigations of extraction characteristics, antioxidative activity of skate skin water extracts on the oxidation of three cooking oils were carried out, and rheological properties, storage safety and sensory evaluation of collagen gel from skate skin were performed. Aromatic and phenolic compounds contents of 50℃ extracts were higher by 49.4% and 32.7%, respectively, than those of 25℃ extracts. Reducing power of extract at 50℃ was higher by 52.74% than that of 25℃ extract, but was 14.9% of ascorbic acid and 27.8% of BHT. Electron donating ability was corresponded to reducing power and phenolic compounds contents. Antioxidative effect of extracts on cooking oil was higher at 50℃ extract than 25℃ extract, and its order was on corn seed oil, soybean oil and olive oil. Antioxidative effect of 50℃ extract showed 38.27~96.83% and 49.53~75.31% of those of ascorbic acid and BHT, respectively, over three cooking oil. The optimum extraction condition for collagen gellation was 100℃, 2 hours extraction under 2.5 folds hydrolysis, and gel strength was lowered above 50% by 10% seasoning.

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A Study on Antioxidant Activity of Ethanol Extract from Rumex crispus and Metal Adsorptivity of it's Root

Cited by 3 publications

References 10 publications

Removal of Heavy Metals using Amine Crosslinked Reduced Graphene Oxide

Removal of Heavy Metals using Amine Crosslinked Reduced Graphene Oxide

Polyphenol Contents of Rumex crispus Root Extract with Hot Water and its Antioxidative Effect

Extraction Characteristics, Antioxidative Effect and Preparation of Collagen Gel of Skate Skin Extracts

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