scholarly journals Analisis Kadar Kurkuminoid dalam Filtrat, Residu dan Campuran Filtrat-Residu Jamu Kunir Asem

2020 ◽  
Vol 21 (1) ◽  
pp. 1
Author(s):  
Elisa Almeyda ◽  
Elok Widayanti
Keyword(s):  
Anova Analysis ◽  
Visible Spectrophotometry ◽  
Relieve Pain ◽  
The Mean ◽  
Uv Visible ◽  
Anti Inflammatory ◽  
The One ◽  
One Way Anova

Jamu kunir asem merupakan jamu yang bermanfaat untuk meredakan nyeri pada saat menstruasi karena mengandung kurkuminoid yang bersifat analgetika, antipiretika dan antiinflamasi. Tujuan dari penelitian ini yaitu menganalisis perbedaan kadar kurkuminoid pada filtrat, residu dan campuran filtrat-residu jamu kunir asem. Sebanyak 2 gram sampel diekstraksi dengan 40 ml kloroform kemudian diuapkan hingga didapatkan ekstrak dan dilarutkan dengan etanol p.a. Penetapan kadar kurkuminoid pada sampel menggunakan metode Spektrofotometri Uv-Visible pada panjang gelombang 462 nm. Kadar kurkuminoid terendah pada filtrat sebesar 11,346 ppm dan tertinggi pada residu sebesar 49,047 ppm sedangkan campuran filtrat-residu sebesar 22,549 nm. Hasil analisis One Way Anova menunjukkan bahwa  rata-rata konsentrasi kurkuminoid pada campuran filtrat-residu, filtrate dan residu jamu kunir asem berbeda secara signifikan.Kata  kunci: Filtrat; jamu kunir asem; kurkuminoid; residu Analysis of Curcumin Levels in Filtrat, Residuesand Mixed in Herb of Turmeric Tamarind ABSTRACTTurmeric tamarind is a useful herb to relieve pain during menstruation because it contains analgesic, antipyretic and anti-inflammatory curcuminoids. The purpose of this study was to analyze differences in levels of curcuminoids in filtrate, residues and mixture of filtrate residues of tamarind turmeric. A total of 2 grams of sample was extracted with 40 ml of chloroform and then evaporated until an extract was obtained and dissolved with ethanol p.a. Determination of curcuminoid levels in samples using the Uv-Visible Spectrophotometry method at a wavelength of 462 nm. The lowest curcuminoid content in the filtrate was 11.346 ppm and the highest in the residue was 49.047 ppm while the mixture of the filtrate-residue was 22.549 nm. The results of the One Way Anova analysis showed that the mean curcuminoid concentration in the mixture of filtrate-residue, filtrate and residues of tamarind turmeric was significantly different.Keywords: curcuminoids, turmeric tamarind, filtrate, residue

scholarly journals Validation of UV Spectrophotometry Method for Determination of Lopinavir and Ritonavir Simultaneously

2021 ◽  
Vol 8 (2) ◽  
pp. 48
Author(s):  
Siti Umi Anisah ◽  
Asri Darmawati ◽  
Amirudin Prawita
Keyword(s):  
Method Validation ◽  
Simultaneous Equation ◽  
Uv Spectrophotometry ◽  
First Derivative ◽  
Accuracy And Precision ◽  
Significant Difference ◽  
The Mean ◽  
The One ◽  
One Way Anova

Lopinavir and ritonavir are anti-viral compounds that have similar chemical structures and overlapping UV spectral profiles. The combination of these two compounds is being promoted as an anti-COVID19 drug. Determination of these two compounds simultaneously using UV spectrophotometry method requires special technique so that the result will be valid. The purpose of this study was to obtain a suitable analytical technique using UV spectrophotometry for the determination of lopinavir-ritonavir simultaneously that fulfill the method validation requirement. In this study, the simultaneous equation technique, absorptivity comparison factor, and first derivative technique were used to overcome the effect of lopinavir/ritonavir absorbance at selected wavelengths for determination of each compound simultaneously. The one-way ANOVA statistical test was used to compare the result of the three analytical techniques. The results showed that the three techniques fullfilled the AOAC requirements for selectivity and linearity. The accuracy and precision test result have not met the requirements of the AOAC method validation. Statistically. the one-way ANOVA analysis showed there was a significant difference between the mean recovery of lopinavir using the absorptivity factor and first derivative technique. Whereas, there was no significant differences among the mean of ritonavir recoveries that were determined using those three techniques. As conclusion, that the UV spectrophotometric method using the simultaneous equation technique, the absorptivity factor technique, and the derivative technique for assaying the lopinavir and ritonavir simultaneously met the requirements for selectivity and linearity parameters. However, the accuracy and precision have not met the requirements. The first derivative technique is suitable for further developed for ritonavir and lopinavir determination simultaneously

Design of a novel optical sensor for determination of trace amounts of copper by UV–visible spectrophotometry in real samples

2017 ◽  
Vol 32 (3) ◽  
pp. e4110
Author(s):  
Eslam Pourbasheer ◽  
Somayeh Morsali ◽  
Zhila Azari ◽  
Mohammad Ali Karimi ◽  
Mohammad Reza Ganjali
Keyword(s):  
Optical Sensor ◽  
Real Samples ◽  
Visible Spectrophotometry ◽  
Uv Visible

Determination of Functional Components of Peanut Skins Pigment

2013 ◽  
Vol 807-809 ◽  
pp. 2035-2042
Author(s):  
Lei Du ◽  
Xin Hua Li ◽  
Ying Liu
Keyword(s):  
Ethyl Acetate ◽  
Chemical Reaction ◽  
Ethanol Solution ◽  
Macroporous Resin ◽  
Visible Spectrophotometry ◽  
Preliminary Identification ◽  
Uv Visible ◽  
Peanut Skins ◽  
Functional Components

The pigments in black and red peanut skins were comparative analyzed in this paper. The pigments were extracted with ethanol solution, purified by AB-8 macroporous resin, and black peanut skins pigment (BPSP) was separated by ethyl acetate to obtain different compositions. The compositions of pigments were qualitatively analyzed by special chemical reaction of organics and UV-visible spectrophotometry. The results show that the compositions of BPSP are mainly anthocyanins and proanthocyanidins, and the contents are 9.39% and 16.62%, respectively. The proanthocyanidins are found in red peanut skins pigment (RPSP), and the content is 24.51%, and no anthocyanin is checked out. It is convenient, rapid, economical and effective for special chemical reaction of organics and UV-visible spectrophotometry, and it is suitable for preliminary identification of natural organics structure.

UV-Visible Spectrophotometry with Arsenazo III for the Determination of Samarium

2019 ◽  
Vol 86 (3) ◽  
pp. 542-548
Author(s):  
Xing-Min Guo ◽  
Qi-Cao Yan ◽  
Xiao-Ting Meng ◽  
Rui-Xin Ma
Keyword(s):  
Arsenazo Iii ◽  
Visible Spectrophotometry ◽  
Uv Visible

scholarly journals Executive functioning in three groups of pupils in D-KEFS: Selected issues in adapting the test battery for Slovakia

2015 ◽  
Vol 6 (1) ◽  
pp. 73-92 ◽  
Author(s):  
Ján Ferjenčík ◽  
Miriam Slavkovská ◽  
Juraj Kresila
Keyword(s):  
Test Battery ◽  
Gifted Children ◽  
Cultural Environment ◽  
Test Items ◽  
Standard Population ◽  
Key Issues ◽  
The Mean ◽  
The One ◽  
Age Range ◽  
One Way Anova

AbstractThe paper reports on the adaptation of a D-KEFS test battery for Slovakia. Drawing on concrete examples, it describes and illustrates the key issues relating to the transfer of test items from one socio-cultural environment to another. The standardisation sample of the population of Slovak pupils in the fourth year of primary school included 250 children with an average age of 9.7 years. The two comparative samples of the same age range were analysed at the same time. They included pupils from classes for gifted children (n = 55) and Roma children from socially disadvantaging environments (n = 50).The results manifested a significant skewness in most distributions of the D- -KEFS primary indicator raw scores. The nature of the skewness suggests that these indicators are more sensitive at discriminating the performance of weaker children but not at discriminating within the above-average performance range. The distribution in the Roma children sample was skewed to the opposite value. Most of the Roma children found the tests from the D-KEFS battery, especially those based on verbal materials, too difficult and so it only differentiated results achieved by the best in the group. Comparisons of the mean scores in all the primary indicators (One-way ANOVA) highlight the need to establish specific norms for the standard population of Slovak children on the one hand and for Roma children from socially disadvantaging environment on the other

scholarly journals Determination of Triiodide Ion Concentration Using UV-Visible Spectrophotometry

2014 ◽  
Vol 26 (13) ◽  
pp. 4084-4086 ◽  
Author(s):  
Sang-Hyuk Jung ◽  
Jei-Won Yeon ◽  
Yong Kang ◽  
Kyuseok Song
Keyword(s):  
Ion Concentration ◽  
Visible Spectrophotometry ◽  
Uv Visible
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