Natural pigments are derived from sources such as plant, animal, insects, and fungi. The anthraquinones are natural pigments that have pharmacological activities. They have applications in several domains such as the pharmaceutical, cosmetic and textile industries. Anthraquinones occur naturally in many plants including Cassia tora of the Fabaceae family. The present study focused on the production of pigments (anthraquinones) from callus of Cassia tora cultured on medium supplemented with 6-benzylaminopurine and thidiazuron. The elicitor, salicylic acid, increased anthraquinone production in callus cultures whereas ethrel had minimum effect. Anthraquinone production increased twofold in callus inoculated in medium containing 10 mM salicylate. The yield obtained was 3709 ± 269.65 mg/kg dry weight of callus in Fraction B. The sun protection factor of the callus extracts was also assessed. The maximum sun protection factor observed was 38.

天然色素来源于植物，动物，昆虫和真菌等来源。蒽醌是具有药理活性的天然色素。它们在制药，化妆品和纺织工业等多个领域都有应用。蒽醌天然存在于许多植物中，包括豆科的决明子。本研究的重点是在补充了6-苄基氨基嘌呤和噻二唑的培养基上培养的决明子愈伤组织产生色素（蒽醌）。在愈伤组织培养物中，引发剂水杨酸增加了蒽醌的产生，而乙炔对人体的影响最小。在含有10 mM水杨酸盐的培养基中接种的愈伤组织中，蒽醌的产量增加了两倍。在部分B中，所获得的产量为3709±269.65mg / kg的愈伤组织干重。还评估了愈伤组织提取物的防晒系数。观察到的最大防晒系数是38。