An improved paper chromatography method of the determination of raffinose and ketose in beet root samples

1963 ◽  
Vol 12 (5) ◽  
pp. 449-454 ◽  
Author(s):  
S. E. Bichsel ◽  
J. R. Johnson
Keyword(s):  
Paper Chromatography ◽  
Chromatography Method ◽  
Beet Root

Two-Dimensional Paper Chromatographic Determination of Amino Acids in Urine

1969 ◽  
Vol 15 (10) ◽  
pp. 1011-1016 ◽  
Author(s):  
Carmine J Spinella
Keyword(s):  
Amino Acids ◽  
Paper Chromatography ◽  
Inborn Errors Of Metabolism ◽  
Chromatographic Determination ◽  
Two Dimensional ◽  
Standard Mixture ◽  
Inborn Errors ◽  
Chromatography Method ◽  
Amino Aciduria

Abstract In an attempt to screen children for amino-aciduria related to various inborn errors of metabolism, a two-dimensional paper chromatography method was developed. This method requires no expensive equipment, resolves a standard mixture of 17 α-amino acids, is consistently reproducible, and requires less than 7 hr from start to visualization of the chromatogram.

scholarly journals Gambaran Zat Pewarna Merah pada Saus Cabai yang Terdapat pada Jajanan yang Dijual di Sekolah Dasar Negeri Kecamatan Padang Utara

2014 ◽  
Vol 3 (3) ◽  
Author(s):  
Ilham Rizka Putra ◽  
Asterina Asterina ◽  
Laila Isrona
Keyword(s):  
Elementary School ◽  
School District ◽  
Sample Size ◽  
Paper Chromatography ◽  
Rhodamine B ◽  
Elementary School District ◽  
Chromatography Method ◽  
Chemical Reagents ◽  
Rhodamin B

AbstrakSaat ini, semakin banyak produsen makanan menggunakan zat pewarna yang sudah dilarang penggunaannya. Tujuan penelitian ini adalah untuk mengetahui gambaran zat pewarna pada saus cabai yang terdapat pada jajanan yang dijual di Sekolah Dasar Negeri Kecamatan Padang Utara pada bulan November 2013 - Februari 2014. Penelitian dilaksanakan di Balai Laboratorium kesehatan Padang. Metode yang digunakan adalah deskriptif dengan jumlah sampel sebanyak 25 sampel yang diambil dari pedagang makanan jajanan saus cabai yang terdapat di SD Negeri pada kecamatan Padang Utara. Pemeriksaan dilakukan secara kualitatif dengan menggunakan pereaksi kimia NaOH 10%, NH4OH 10%, HCl pekat dan H2SO4 pekat serta dilanjutkan dengan metoda kromatografi kertas untuk mendapatkan jenis zat pewarna yang terdapat didalam jajanan saus cabai. Hasil penelitian menunjukkan bahwa sebanyak 10 sampel (40%) mengandung Rhodamin B dan 15 sampel (60%) yang diizinkan penggunaannya. yaitu Erytrosin. Rata-Rata kadar Erytrosin dalam saus cabai adalah 639,5% dari 300 mg/kg sampel yang diizinkan.Kata kunci: saus cabai, zat pewarna berbahaya, kadar zat pewarnaAbstractNowadays more and more food manufacturers use dyes that have been banned uses. Applied this study is to describe the dye contained in the chili sauce snacks sold in Elementary School District of the northern desert in November 2013-February 2014. This research was conducted in Health Laboratoratorium Padang. The method used a descriptive with a sample size of 25 samples taken from street food vendors chili sauce found in the districts of SD Negeri Kecamatan Padang Utara. Examination conducted qualitatively by using chemical reagents NaOH 10%, 10% NH4OH, and concentrated HCl and concentrated H2SO4 followed by paper chromatography method to get the type of dye contained in chili sauce snacks.The results showed that 10 samples (40%) containing Rhodamine B and 15 samples (60%) which allowed determination of use, Erytrosin. Concentration of Erytrosin, the average levels in the chili sauce as much as 639,5% of the 300 mg/kg samples were allowed.Keywords: chili sauce, harmful dyes, dye concentration

Determination of Radiochemical Purity and Pharmacokinetic Parameters of 99mTc-Sulphur Colloid and 99mTc-Tin Colloid

1981 ◽  
Vol 20 (06) ◽  
pp. 279-282 ◽  
Author(s):  
D. Konstantinovska ◽  
K. Milivojević ◽  
J. Bzenić ◽  
V. Jovanović
Keyword(s):  
Radiochemical Purity ◽  
Slow Component ◽  
Pharmacokinetic Parameters ◽  
Optimum Size ◽  
Buffer Solution ◽  
Chromatography Method ◽  
Fast Phase ◽  
Biodistribution Studies ◽  
Biological Half Time

Labelling yield and radiochemical purity, higher than 95%, of 99mTc-colloid preparations were determined by using the paper chromatography method. Less than 3% of labelled citric acid, added to the preparation as a buffer solution, has been found in 99mTc-sulphur colloid. High radiochemical purity and optimum size of colloid particles has also been proved by biodistribution studies on experimental animals. The analysis performed has shown that more than 50% of 99mTc-colloid preparations excreted by urine is 99mTcO–, the remaining past 50% being protein bound 99mTc. Biological half-time of excretion of the fast phase is the same for both preparations, i.e. 10 min, while for the slow component it is 120 min in 99mTc-S-colloid and 160 min in 99mTc-Sn colloid.

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