Journals / Pamukkale Üniversitesi Mühendislik Bilimleri Dergisi / 2000 / Cilt: 6 - Sayı: 3

INVESTIGATION OF VARIATION OF DISTRIBUTION COEFFICIENT OF CAFFEINE BETWEEN WATER AND SOME ORGANIC SOLVENTS DEPEND ON THE TEMPERATURE

KAFEİNİN SU VE BAZI ORGANİK ÇÖZÜCÜLER ARASINDAKİ DAĞILMA KATSAYILARININ SICAKLIĞA BAĞLI OLARAK DEĞİŞİMİNİN İNCELENMESİ

Pages
255–258
Publication Date
2000-03-01
DOI
—
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

It was seen that the distribution coefficient of caffeine between water and chloroform was decreased with increasing temperature and increased by using other solvents (ethyl acetate, n-butyl acetate, benzene, carbon tetrachloride) with increasing temperature.

📌 3 Key Takeaways

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Objective & Hypothesis:Caffeine is a main component of tea which is an important agricultural product.
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Key Findings & Data:In experimental works, 1 % aqueous solution of caffeine was used.
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Conclusion & Impact:It was seen that the distribution coefficient of caffeine between water and chloroform was decreased with increasing temperature and increased by using other solvents (ethyl acetate, n-butyl acetate, benzene, carbon tetrachloride) with increasing temperature.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Kafein · Ekstraksiyon · Dağılma katsayısı

Abstract

Caffeine is a main component of tea which is an important agricultural product. The aim of this study is to investigate the variation of the distribution coefficients of caffeine between water and some organic solvents. Organic solvents used in this study were chloroform, ethyl acetate, n-butyl acetate, carbon tetrachloride and benzene. In experimental works, 1 % aqueous solution of caffeine was used. Iodometry method was used in analysis of caffeine. It was seen that the distribution coefficient of caffeine between water and chloroform was decreased with increasing temperature and increased by using other solvents (ethyl acetate, n-butyl acetate, benzene, carbon tetrachloride) with increasing temperature.

Özet

Bu çalışmanın amacı, ülkemizin önemli bir tarım ürünü olan çayın önemli bileşenlerinden biri olan kafeinin, su ve bazı organik çözücüler arasındaki dağılma katsayılarının sıcaklığa bağlı olarak değişiminin incelenmesidir. Çalışmada kullanılan organik çözücüler kloroform, etilasetat, n-butil asetat, karbon tetraklorür ve benzendir. Deneysel çalışmada hazırlanan % 1`lik (hacmen) kafein çözeltisinden belirli miktar alınarak çözücü ile birlikte karıştırılmış ve yapılan analizler sonucunda kafein miktarı tespit edilmiştir. Bu işlem dört ayrı sıcaklıkta gerçekleştirilerek dağılma katsayılarının sıcaklığa ne şekilde bağlı oldukları incelenmiştir. Yapılan deneysel çalışmalar sonucunda en yüksek dağılma katsayısı kloroformla elde edilmiş ve kloroform ile elde edilen dağılma katsayılarının kullanılan diğer çözücülerin aksine sıcaklıkla azaldığı tespit edilmiştir.

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Cite This Article

HASDEMİR, İ. M., İNCİ, İ., BİLGİN, M., ÖNDER, M., AYDIN, A. (2000). INVESTIGATION OF VARIATION OF DISTRIBUTION COEFFICIENT OF CAFFEINE BETWEEN WATER AND SOME ORGANIC SOLVENTS DEPEND ON THE TEMPERATURE. Pamukkale Üniversitesi Mühendislik Bilimleri Dergisi, Cilt: 6 - Sayı: 3, 255–258. https://ajindex.com/articles/43368

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