Organic cotton SAHANA variety spun into 30s single yarn dyed with four natural colorants (Arecanut slurry, Eucalyptus leaves, Pomegranate rind and Indigo) and further used for development of single jersy knits. Palmarosa oil was used for the preparation of microcapsules through interfacial polymerization technique and finished on organic knitted fabric by exhaust and pad dry cure methods. The finished organic knit was assessed for effect of laundering on antimicrobial efficiency and aroma intensity. The TGA of Palmarosa microcapsules was found to be better with minimum weight loss at higher temperature than the pure oil, and the morphology of microcapsules was fairly irregular due to preparation conditions. Among the natural colourants, cotton yarn dyed with indigo dye possessed greater colour strength and lesser reflectance than the other dyed samples. The fastness properties of cotton yarn dyed with arecanut slurry exhibited good to excellent colour fastness to washing and sunlight. Irrespective of methods of application, organic cotton knits finished with microcapsules by pad dry cure method showed maximum zone of inhibition compared to knits finished by exhaust method against Staphylococcus aureus and Escherichia coli. The antimicrobial activity of the finished samples was subjected to multiple washing which indicated that knits finished with pad dry cure method showed a zone of inhibition even after 20th wash and better aroma retention compared to knits finished with exhaust method of application. Thus, the Palmarosa microencapsulated organic cotton knits are free from hazardous chemicals and have multi functional properties which can be suitable for medical and healthcare textiles.

中文翻译：

---

使用天然色素和Palmarosa油微胶囊对有机棉针织物进行抗菌和芳香整理

有机棉SAHANA品种被纺成30s单纱，并用四种天然着色剂（Arecanut浆液，桉树叶，石榴皮和Indigo）染色，并进一步用于开发单层针织。棕榈油通过界面聚合技术用于制备微胶囊，并通过排气和垫干固化方法在有机针织物上进行整理。评价完成的有机编织物的洗涤对抗菌效率和香气强度的影响。人们发现，在较高的温度下，棕榈油的微胶囊的TGA优于纯油，且重量损失最小，并且由于制备条件的原因，微胶囊的形态相当不规则。在天然色素中，靛蓝染料染色的棉纱比其他染色样品具有更高的色强度和更低的反射率。槟榔浆液染色的棉纱的牢度性能表现出良好的耐洗色牢度和优异的日晒牢度。不论使用哪种方法，与通过抽气法整理的针织品相比，通过垫干固化法整理的微囊整理的有机棉针织品均显示出最大的抑菌区域。金黄色葡萄球菌和大肠杆菌。成品样品的抗菌活性经过多次洗涤，这表明用垫干固化方法整理的针织品即使经过20次洗涤也显示出抑制区域，并且与用排气法整理的针织品相比，香气保留效果更好。因此，Palmarosa微囊化有机棉针织物不含有害化学物质，并具有适用于医疗和保健纺织品的多功能特性。