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Fe(Ⅱ)와 Cu(Ⅱ)에 의해 킬레이트화 된 수수추출물 함유 바이오플라스틱의 색상 안정성

Title
Fe(Ⅱ)와 Cu(Ⅱ)에 의해 킬레이트화 된 수수추출물 함유 바이오플라스틱의 색상 안정성
Translated Title
Color Stability of the Bioplastic containing Sorghum Extract Chelated by Fe(Ⅱ) and Cu(Ⅱ)
Authors
이성준이가현정상원김현철최진현배도규한상익이세근
DGIST Authors
이성준정상원김현철이세근
Issue Date
2015-03
Citation
한국염색가공학회지, 27(1), 62-69
Type
Article
Keywords
sorghum extractchelationmetal saltscolor stabilitybioplastic
ISSN
1229-0033
Abstract
To improve the color stability of the bioplastic containing sorghum extract, sorghum extract was chelated by ametal ion. The chelating activity was quantitatively evaluated under the various conditions. Chelation of sorghum extract byCu(II) was determined by reaction with pyrocatechol violet, whereas Fe(II) chelation was investigated by forming complexeswith ferrozine. Chelation of sorghum extract was increased rapidly with increasing concentrations of metal salt and sorghumextract. At a 0.1g/L metal salt addition level, the chelating activity of Fe(II) and Cu(II) were 66.7% and 54.2%, respectively. According to the chelation pH conditions, the sorghum extract was chelated almost 100% by Fe(II) above the pH 6.5. It wasconfirmed that Fe(II) was a strong chelator of sorghum extract than Cu(II). The sorghum extract chelated with metal salt exhibithigher thermal stability. The bioplastic containing chelated sorghum extract showed relatively less color change than the control.
URI
http://hdl.handle.net/20.500.11750/4900
DOI
10.5764/TCF.2015.27.1.62
Publisher
한국염색가공학회
Related Researcher
Files:
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Collection:
Magnet-Controlled Materials Research Group1. Journal Articles


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