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Evaluating the Effects of Anthocyanin Structure and the Role of Metal Ions on the Blue Color Evolution of Anthocyanins in Varied pH Environments

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자료유형	E-Book
개인저자	Sigurdson, Gregory T.
단체저자명	The Ohio State University. Food Science and Technology.
서명/저자사항	Evaluating the Effects of Anthocyanin Structure and the Role of Metal Ions on the Blue Color Evolution of Anthocyanins in Varied pH Environments.
발행사항	[S.l.] : The Ohio State University., 2016
발행사항	Ann Arbor : ProQuest Dissertations & Theses, 2016
형태사항	199 p.
소장본 주기	School code: 0168.
ISBN	9780438310063
일반주기	Source: Dissertation Abstracts International, Volume: 80-01(E), Section: B. Adviser: M. Monica Giusti.
요약	Due to consumer demand and possible health concerns, the use of synthetic food colorants has been decreasing. Synthetic red and yellow colorants are most commonly used in the food industry
요약	Acylated and nonacylated derivatives of cyanidin and delphinidin were combined with various metal ions (Mg2+, Al3+, Cr3+, Fe3+, and Ga3+) in factorial excesses to anthocyanin concentration (as large as 2000x [anthocyanin]) in pH 3-8. Phenolic ac
요약	Anthocyanin responses to metal ion chelation were dependent on all factors tested. In all pH, anthocyanins exhibited bathochromic and hyperchromic shifts becoming more purple and blue. Largest bathochromic shifts occurred in pH 6, and largest hy
요약	Metal chelation resulted in larger bathochromic shifts on anthocyanins with more B-ring hydroxyl groups (delphinidin > cyanidin). Anthocyanins lacking acylation typically underwent much larger bathochromic shifts
요약	Bivalent Mg2+ showed no obvious effect on anthocyanin color. Generally, bathochromic shifts on anthocyanin were greatest with more electron rich metal ions: Fe3+ . Ga3+ > Al 3+ > Cr3+.
요약	Metal chelation by anthocyanins resulted in blue and purple hues similar to currently used synthetic colorants in pH environments where these colors are not typically expressed, further indicating potential to act as alternatives.
일반주제명	Food science. Organic chemistry.
언어	영어
기본자료 저록	Dissertation Abstracts International80-01B(E). Dissertation Abstract International
대출바로가기	http://www.riss.kr/pdu/ddodLink.do?id=T15001355