This study investigates the influence of chitosan to improve the dyeing absorption of cotton fabric using Roselle (Hibiscus sabdariffa L.) and the determination of the amount of anthocyanin pigments by the spectrophotometric method. The results of this study highlights that cotton fabrics treated with chitosan have better depth of shade (K/S = 11) than those untreated fabrics (K/S = 4) dyed with Roselle (Hibiscus sabdariffa L.). The cotton fabrics treated with chitosan not only provide better depth of shade but also give better wash and light fastness than those of the untreated fabrics dyed with Roselle (Hibiscus sabdariffa L.) [ABSTRACT FROM AUTHOR]
研究了壳聚糖对罗缎（Hibiscus sabdariffa L.）提高棉织物染色吸收率的影响，并用分光光度法测定了花青素色素的含量. 本研究的结果表明，用壳聚糖处理的棉织物比用玫瑰茄（Hibiscus sabdariffa L.）染色的未经处理织物（K/S＝4）具有更好的遮荫深度（K/S＝11）. 用壳聚糖处理的棉织物不仅能提供较好的遮光深度，而且比用玫瑰茄染色的未经处理的织物具有更好的耐洗性和耐光性（Hibiscus sabdariffa L.）. [ABSTRACT FROM AUTHOR]
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