서울대학교 일반화학실험 <천연색소와 무기안료>

소개

"서울대학교 일반화학실험 <천연색소와 무기안료>"에 대한 내용입니다.

목차

1. Abstract

2. Introduction

3. Data & Results

4. Discussion

5. 과제
1) 소목 (Caesalpinia sappan) , 치자 (Gardenia jasminoides Ellis) , 자초 (Lithospermum erythrorhizon) 에 들어있는 성분 조사 [10 점]
2) 산이나 염기 지시약으로 쓰이는 물질의 종류 (각각 2 가지 이상) 와 원리 [10 점]
3) 금속 매염액의 역할을 설명하고 금속 매염액 종류 3 가지 이상 기술 [8 점]
4) 금속 매염제인 철은 (A) 금속원소에 속한다. (A) 금속원소란 (B) 오비탈 구역의 원소를 말한다. A 와 B 에 들어갈 말 채우기 [2 점]

본문내용

Growing concern over various environmental and health issues of synthetic dyes have led to greater attention toward natural dyes as alternative colorants. As such, characterization of coloring features of natural dyes is important. In the present experiment, natural dyes were extracted from three different plant species - Caesalpinia sappan, Gardenia jasminoides Ellis, and Lithospermum erythrorhizon. To further examine factors inducing color change of these natural dyes, iron and alum pre-mordant agents as well as acid and base solutions were treated to the fiber. Data indicate that change in intensity of colors can be achieved by mordants and acid-base treatment. Mordants, iron mordant in particular, not only deepen the color shade but also expands the color range that can be achieved. This is made possible through formation of coordination complex by the metal ions of metallic mordants with the dye and the fiber

참고자료

· Sequin-Frey, Margareta. "The chemistry of plant and animal dyes." Journal of chemical education 58.4 (1981): 301.
· Lee, Dong-Kyu, et al. "Fabrication of nontoxic natural dye from sappan wood." Korean Journal of Chemical Engineering 25.2 (2008): 354-358.
· IARC Monographs Working Group. "General introduction to the chemistry of dyes." IARC Monographs on the Evaluation of Carcinogenic Risks to Humans 99 (2010).
· Perepichka, Dmitrii F., and Martin R. Bryce. "Molecules with exceptionally small HOMO–LUMO gaps." Angewandte Chemie International Edition 44.34 (2005): 5370-5373.
· Bury, C. R. "Auxochromes and resonance." Journal of the American Chemical Society 57.11 (1935): 2115-2117.
· Shyur, Lie-Fen. Recent trends in medicinal plants research. Academic Press, 2012.
· Albreht, Alen, Irena Vovk, and Breda Simonovska. "Addition of β-lactoglobulin produces water-soluble shikonin." Journal of agricultural and food chemistry 60.43 (2012):10834-10843.
· Huang, Xiang-Yue, et al. "Optimization extraction of shikonin using ultrasound-assisted response surface methodology and antibacterial studies." Evidence-Based Complementary and Alternative Medicine 2020 (2020).
· Baker, John Randal. "Principles of biological microtechnique. a study of fixation and dyeing." Principles of biological microtechnique. A study of fixation and dyeing. (1958).
· Vankar, Padma S. "Chemistry of natural dyes." Resonance 5.10 (2000): 73-80.
· Prabhu, K. H., and Aniket S. Bhute. "Plant based natural dyes and mordants: A Review." J. Nat. Prod. Plant Resour 2.6 (2012): 649-664.
· Ngamwonglumlert, Luxsika, et al. "Color and molecular structure alterations of brazilein extracted from Caesalpinia sappan L. under different pH and heating conditions." Scientific reports 10.1 (2020): 1-10.
· Badami, Shrishailappa, and Sudheer Moorkoth. "Caesalpinia sappan–A medicinal and dye yielding plant." (2004).
· Chen, Yang, et al. "Antioxidant potential of crocins and ethanol extracts of Gardenia jasminoides ELLIS and Crocus sativus L.: A relationship investigation between antioxidant activity and crocin contents." Food Chemistry 109.3 (2008): 484-492.
· Quílez-Pardo, Juan, and Joan Josep SolazPortolés. "Students' and teachers' misapplication of Le Chatelier's principle: Implications for the teaching of chemical equilibrium." Journal of Research in Science teaching 32.9 (1995): 939- 957.
· Soper, Horace W. "Phenolphthalein." The American Journal of Digestive Diseases 5.5 (1938): 297-297.
· Charych, Deborah, et al. "A ‘litmus test’for molecular recognition using artificial membranes." Chemistry & biology 3.2 (1996):113-120.