A dye-fibre system from food waste: Dyeing casein fibres with anthocyanins
A dye-fibre system from food waste: Dyeing casein fibres with anthocyanins
复制标题
来自食物垃圾的染料纤维系统：用花青素对酪蛋白纤维进行染色
DOI：
10.1111/cote.12718
复制
发表时间：
2023
影响因子：
1.8
通讯作者：
Blackburn R
中科院分区：
文献类型：
--
作者：
Blackburn R
由食品侧流生产的再生蛋白质纤维作为循环和可持续纤维具有巨大的潜力，但需要对其染色性能有更多的了解。在这项研究中，着色的酪蛋白纤维与染料也提取自黑加仑皮剩余的果汁压榨进行了探讨。酪蛋白纤维用富含花青素的黑醋栗提取物染色，pH 2至pH 6，温度40至80°C，有和没有明矾。在所有测试条件下，酪蛋白纤维都可以用黑醋栗提取物染色，在最佳条件下，染色可获得中等颜色深度，且耐洗性良好。在pH 4下观察到花青素苷对酪蛋白的最高吸附，其中花青素苷是60%中性紫色醌碱形式和40%黄铵阳离子形式的混合物;在这些条件下，染料-纤维相互作用是最佳的。在pH 2时，酪蛋白纤维具有高度带正电荷的表面，花青素苷呈黄阳离子形式，导致一些染料-纤维排斥。在pH 6下，略微带负电荷的酪蛋白纤维显示出40%紫色醌碱形式和60%阴离子醌碱形式的混合物的较低吸附，再次导致一些染料-纤维排斥。明矾在染浴中的存在下，由于形成Al-anthocyanin络合物，在pH 4下增强花青素在纤维上的吸附。染色的耐洗牢度随pH值的升高和温度的升高而提高。
Regenerated protein fibres manufactured from food side‐streams offer significant potential as circular and sustainable fibres, but greater knowledge of their dyeing properties is required. In this research, coloration of casein fibres with dyes also extracted from blackcurrant skins left over from juice pressing is explored. Casein fibre was dyed with blackcurrant extract, rich in anthocyanins, from pH 2 to pH 6 and from 40 to 80°C, with and without alum. Casein fibres could be dyed with blackcurrant extract across all conditions tested, and under optimal conditions, dyeing is achieved with medium depths of colour with good wash fastness. Highest sorption of anthocyanins onto casein is observed at pH 4, where anthocyanins are a mixture of 60% neutral purple quinonoidal base form and 40% flavylium cation form; under these conditions dye–fibre interaction is optimal. At pH 2, casein fibre has a highly positively charged surface and anthocyanin is in the flavylium cation form, leading to some dye–fibre repulsion. At pH 6, the slightly negatively charged casein fibre demonstrates lower sorption of the mixture of 40% purple quinonoidal base form and 60% the anionic quinonoidal base form, again leading to some dye–fibre repulsion. Presence of alum in the dyebath enhances sorption of anthocyanins onto fibre at pH 4 due to formation of Al–anthocyanin complexes. Wash fastness of the dyeings is better as pH increases and as temperature increases.