ANALISIS SIFAT OPTIK KLOROFIL PADA EKSTRAK DAUN MENGGUNAKAN UV-VIS SPEKTROMETER SEBAGAI STUDI AWAL APLIKASI DYE SENSITIZER

Dona Dianisya, Amalia Dini Silmina, N. Purwanto, Isnaeni Isnaeni, I. Sugihartono
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Abstract

ABSTRAK Telah dilakukan studi ekstraksi awal klorofil dari 3 jenis daun yaitu daun bayam (Amarantus), daun pepaya (Carica papaya), dan daun jarak (Ricinus communis). Ekstraksi dilakukan dengan teknik penghancuran menggunakan blender. Pelarut yang digunakan adalah isopropanol, asam asetat, dan DI water. Hasil penyaringan ekstrak daun diperoleh larutan sebayak 75 ml untuk setiap larutan ekstrak klorofil. Uji Ultrasonic Visible memberikan konfirmasi adanya penyerapan di rentang cahaya ultraviolet dan cahaya tampak. Sementara itu, serapan klorofil teramati di rentang cahaya tampak. Apabila dibandingkan serapan UV dan cahaya tampak, pada larutan ekstrak masih mengandung banyak gugus asam dibandingkan klorofil yang di ekstrak. Kata-kata kunci: daun bayam, daun pepaya, daun jarak, absorbansi, klorofil ABSTRACT We studied for chlorophyll extract from 3 leaf types that are spinach leaf (Amarantus), papaya leaf (Carica papaya), and castor leaf (Ricinus communis). The extraction is done by using a blender. The solvents used are isopropanol, acetic acid, and DI water. The result of leaf extract was obtained 75 ml solution for each solution of chlorophyll extract. The Visible Ultrasonic Test confirms absorption in the range of ultraviolet light and visible light. Meanwhile, chlorophyll uptake is observed in the visible light spectrum. When compared to UV absorption and visible light, in the extract solution still contains a lot of acid groups than the chlorophyll extracted. Keywords: spinach leaf, papaya leaf, Castor leaf, absorbance, chlorophyll.
从三种不同类型的菠菜(Amarantus)、木瓜叶(Carica papaya)和蓖麻(Ricinus communis)的叶子中对叶绿素进行了初步的提取。提取是使用搅拌机破坏技术进行的。溶剂是异丙醇、醋酸和水中的溶剂。每叶绿素提取物的提取物提取75毫升的叶绿素溶液。可视超声波测试确认紫外线和可见光范围内是否有吸收。与此同时,可见光中观察到叶绿素的吸收。与紫外线和可见光的吸收相比,提取物中含有的酸性星团比提取物中的叶绿素多得多。关键词:菠菜叶,木瓜叶,间隔叶,absorbansi,叶绿素撤离是通过使用搅拌机完成的。剩下的solvents是异丙醇,乙酸,在水中。立叶extract的建议是为每一种氯仿溶液提供75毫升的解毒剂。可见光光范围内的超声波认证测试。我的意思是,上用氯仿在可见光照射下观察。当涉及到紫外线的吸收和可见光时,在extract solution中仍然含有大量的酸性物质,而不是体外受精。spinach leaf, papaya leaf, Castor leaf, absorbance, chlorophyll。
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