CAJ | 학술논문

以紫红豇豆为原料，研究了豆荚与种子中紫红色素理化性质以及防腐剂、pH值、光照、温度、还原剂、氧化剂和7种常见金属离子对其稳定性的影响，旨在为紫红豇豆色素的提取加工及工业应用提供理论依据。结果显示：豆荚与种子的紫红色素在紫外区的最大吸收波长分别为270nm和207nm，在可见区的最大吸收波长分别为542nm和481nm，紫红色素水溶性好，颜色随pH值变化而变化（pH＜3时颜色鲜红；pH＞7时，颜色由紫色转为绿色）。酸性条件（pH＜）下该色素对光、低温有很好的稳定性，耐氧化性与耐还原性较强。Ca2+、Na+、Mg2+、K+、Zn2+等离子对紫红色素的稳定性影响不大，Cu2+、Fe3+离子使色素稳定性变差。
이자홍강두위원료，연구료두협여충자중자홍색소이화성질이급방부제、pH치、광조、온도、환원제、양화제화7충상견금속리자대기은정성적영향，지재위자홍강두색소적제취가공급공업응용제공이론의거。결과현시：두협여충자적자홍색소재자외구적최대흡수파장분별위270nm화207nm，재가견구적최대흡수파장분별위542nm화481nm，자홍색소수용성호，안색수pH치변화이변화（pH＜3시안색선홍；pH＞7시，안색유자색전위록색）。산성조건（pH＜）하해색소대광、저온유흔호적은정성，내양화성여내환원성교강。Ca2+、Na+、Mg2+、K+、Zn2+등리자대자홍색소적은정성영향불대，Cu2+、Fe3+리자사색소은정성변차。
In order to provide the basis for the purple-red pigment extraction process and its industrial application, the physicochemical properties of purple -red pigment and effects of preservatives, and pH value, light, temperature, oxidant, reductant and 7 kinds of metal ions on the stability were investigated by using Vigna unguiculata (Linn.)Walp as experimental materials. Results showed that the purple-red pigment from pod and seed of Vigna unguiculata (Linn.)Walp had good water-solubility and was stable to light and heat in acid environment (pH<3), but sensitive to the oxidizer and reducer, pH value of environment (when pH is less than 3 the color is red; when pH is more than 7, the color turn from purple to green). The absorption maximum wavelength of the pigment in the pod and flesh was 270nm and 207nm in the ultraviolet region, respectively, and 542nm and 481nm in the visible wavelength region, respectively. The influences of Ca2+, Na+, Mg2+, K+, Zn2+ were not obvious, but Cu2+ and Fe3+could increase the destruction. The red pigment has good development prospects.