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Journal : PROSIDING SEMINAR NASIONAL

POWER TO DISSOLVE Ca OXALATE BY LEMON JUICE (Citrus lemon) ON VARIATION OF CONCENTRATION AND IMMERTION TIMES Endang Triwahyuni Maharani; Jatmiko Susilo; Siva Dwi Kemala Sari
PROSIDING SEMINAR NASIONAL & INTERNASIONAL 2017: Prosiding Seminar Nasional Pendidikan, Sains dan Teknologi
Publisher : Universitas Muhammadiyah Semarang

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Abstract

Lemon juice consisted of 5% citric acid, which gives a distinctive flavor of lemon and gives an pH acidity of about 2-3. Citrate in the lemon juice can be used as a diuretic  (laxative urine).  Citrate  blocks  the  formation  of  Ca  oxalate  or  Ca phosphate and form Ca citrate which dissolved in water, so that citrate is able to blocks the kidney stones of calcium production. The purpose of this research is to assess the Ca oxalate solubility by concentration optimization of lemon juice and Ca oxalate weight. From the optimization, the treatment for this research is to marinated the Ca oxalate in lemon juice for 1 hour, 2 hours, and 3 hours, then determine the percentage of the ability of the lemon juice to dissolves Ca oxalate. The result showed that the optimum concentration of the lemon juice (Citrus lemon) is 100%, the optimum weight of Ca oxalate (CaC 2O4) is 1.0 grams and theoptimum lemon juice marinating based on the concentration and the optimum weight is 3 hours, so it can be concluded that the the longer the time Ca oxalate marinated in higher solubility of lemon juice the higher the Ca oxalate. The Ca oxalate dissolved for 1 hour was 21,43% ± 0,11, 2 hours 25,52% ± 0,18  and 3 hours of 42,31% ± 0,09. Key word: Power to dissolve, Lemon juice, citrate, Ca oxalate.
ANALISIS KALIUM DAN PROSENTASE DAYA LARUT CALSIUM OKSALAT OLEH KALIUM DALAM AIR TEH DAUN SUKUN (Artocarpus altilis) Endang Triwahyuni Maharani; Ana Hidayati Mukaromah; Jatmiko Susilo
PROSIDING SEMINAR NASIONAL & INTERNASIONAL 2012: SEMINAR NASIONAL HASIL PENELITIAN 2012
Publisher : Universitas Muhammadiyah Semarang

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Abstract

Sukun termasuk dalam genus Artocarpus (famili Moraceae) yang terdiri atas 50 spesies tanamanberkayu. Daun tanaman sukun mengandung beberapa zat berkhasiat seperti asam hidrosianat,asetilcolin, kalium, tanin, riboflavin, dan sebagainya. Zat-zat tersebut mampu mengatasi peradangan,menurunkan kolesterol, mengobati penyakit hati, inflamasi, jantung, ginjal dan pembuluh darah.Tujuan penelitian ini adalah menganalisis kadar kalium pada larutan daun sukun segar, kering, dandaun sukun yang diabukan, melakukan optimasi konsentrasi daun sukun kering dan berat Ca Oksalat(CaC2O4), serta menentukan daya larut Ca Oksalat (CaC2O4) oleh kalium dalam air rebusan teh daunsukun (Artocarpus altilis). Hasil penelitian adalah kadar kalium pada larutan daun sukun segar 560,22mg/kg, pada larutan daun sukun kering 573,68 mg/kg, dan pada daun sukun yang diabukan adalah872,68 mg/kg. Rata – rata daya larut Ca Oksalat dalam air rebusan teh daun sukun dengan frekuensisatu kali sehari selama tujuh hari adalah 81,73%. Ada pengaruh penggunaan air teh daun sukun satukali sehari selama tujuh hari berturut – turut terhadap prosentase daya larut kalsium oksalat.