Published 2018 | Version v1
Journal article Metadata-only

Adsorption of catechin in green-tea extracts using N-vinylacetamide-grafted fiber

Creators

  • 1. Chiba University, Department of Applied Chemistry and Biotechnology, Chiba (Japan)

Description

To remove catechin from green-tea extracts, N-vinylacetamide (NVAA) as an amide monomer was graft-polymerized onto a commercially available nylon-6 fiber. The resultant NVAA-grafted fiber with a degree of grafting of 79% exhibited a saturation capacity for catechin of 0.78 mmol/g of the fiber, which is 3.7-fold higher than that of N-vinyl-2-pyrrolidone-grafted fiber. The catechin adsorbed onto the NVAA-grafted fiber was quantitatively eluted with 0.1 M NaOH and the fiber was repeatedly used for catechin adsorption. (author)

Availability note (English)

Available from DOI: https://doi.org/10.3769/radioisotopes.67.551

Abstract (Japanese)

緑茶抽出液中からカテキンを吸着除去するために,アミド系モノマーである N-ビニルアセトアミド(NVAA : N-vinylacetamide)をナイロン繊維にグラフト重合した繊維(NVAA 繊維)を作製した。NVAA 繊維(グラフト率79%)の繊維重量あたりのカテキン飽和吸着量は0.78 mmol-catechin/g であり,N-ビニル-2-ピロリドングラフト重合繊維と比較して3.7 倍であった。また,NVAA 繊維に吸着したカテキンを0.1 M NaOH で定量的に溶離させることによって,NVAA 繊維をカテキン吸着に繰返し使用できた。(著者)

Additional details

Additional titles

Original title (Japanese)
N-ビニルアセトアミドグラフト重合繊維による緑茶抽出液中からのカテキンの吸着

Identifiers

DOI
10.3769/radioisotopes.67.551;

Publishing Information

Journal Title
Radioisotopes (Online)
Journal Volume
67
Journal Issue
11
Journal Page Range
p. 551-557
ISSN
1884-4111

INIS

Country of Publication
Japan
Country of Input or Organization
Japan
INIS RN
52103109
Subject category
S38: RADIATION CHEMISTRY, RADIOCHEMISTRY AND NUCLEAR CHEMISTRY;
Descriptors DEI
ADSORBENTS; ADSORPTION; ADSORPTION ISOTHERMS; CROSS-LINKING; ELECTRON BEAMS; FILTERS; GRAFT POLYMERS; LEACHING; MOLECULAR WEIGHT; NYLON; PH VALUE; RADIATION DOSES; RADICALS
Descriptors DEC
BEAMS; CHEMICAL REACTIONS; DISSOLUTION; DOSES; ISOTHERMS; LEPTON BEAMS; MATERIALS; ORGANIC COMPOUNDS; ORGANIC POLYMERS; PARTICLE BEAMS; PETROCHEMICALS; PETROLEUM PRODUCTS; PLASTICS; POLYAMIDES; POLYMERIZATION; POLYMERS; SEPARATION PROCESSES; SORPTION; SYNTHETIC MATERIALS

Optional Information

Notes
15 refs., 6 figs., 1 tab.