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INDONESIA
Indonesian Journal of Chemistry and Environment
Published by Universitas Negeri Yogyakarta
ISSN : -     EISSN : 25993186     DOI : -
Core Subject : Science, Social, Engineering,
Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Environmental Science
Indonesian Journal of Chemistry and Environment (IJCE) is a journal which covers all the field of chemistry and environment, both experimental and theoretical aspects. Regular papers, letters and review articles with contents meeting the scope of the journal will be considered for publication after peer review. Authors are encouraged to submit complete original and unpublished works, which are not under review and considered to be publish in any other journals.
Arjuna Subject : -
Articles 5 Documents
 1 
Search results for , issue " Vol 1, No 1 (2017): December 2017" : 5 Documents clear
Analysis of Cyanide Content on Yams Using Spectrophotometry Methods Widiastuti, Vany; Ernawati, Erlin; Fatmadewi, Vita; Anindyajati, Saraswati; Faradina, Shaaliyah Novita
Indonesian Journal of Chemistry and Environment Vol 1, No 1 (2017): December 2017
Publisher : Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/ijce.v1i1.20784

Abstract

This study aims to determine whether or not cyanide content in various species of yams in the District of Tempel, Sleman, Yogyakarta. The samples were cassava (Manihot esculenta Crantz), water yam (Discorea Alata), intoxicating yam (Dioscorea hispida Dennst), canna lilly (Canna discolor L), and taro (Colocasia esculenta). The qualitative test was performed by cementing the sample with aquadest and 10% tartrate acid and then covering the erlenmeyer that containing the sample with dry filter paper immersed in saturated picric acid and dampened with 8% sodium carbonate and then heating it. Quantitative tests were performed using a spectrum 20 with a wavelength of 590 nm. This quantitative test is based on forming a blue hydrindantin complex at pH > 12 when cyanide is reacted with a ninhydrin complex. The results showed that in qualitative test, sample containing cyanide was indicated by the change of color of filter paper from yellow to brownish red. Quantitative results show that cyanide contained in sample as varies levels. The cyanide levels through the various species of yams were 0.1098 mg / 100g for cassava 0.049 mg/100 g for water yam, 0.1394 mg/100g for intoxing yam, 0.0896 mg/100 g for canna lilly and 0.0680 mg / 100g for taro.
Content Analysis Of Vitamin C In Fresh And Processed Moringa Trees By Spectrophotometry And Iodometric Titration Methods Sarah, S.; Murthy, R.S.; Sugiarto, A. P.; Sariyati, S.; Priyambodo, E.
Indonesian Journal of Chemistry and Environment Vol 1, No 1 (2017): December 2017
Publisher : Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/ijce.v1i1.18816

Abstract

The aims of this research were to examine the vitamin C content found in fresh and processed moringa trees and to know the method/ stage used to analyze the vitamin C content found in fresh and processed moringa trees. This research uses two methods namely spectrophotometric method and iodometry titration method. Initial stage prepare the sample of moringa, which were moringa leaf, moringa stem and moringa seed.  The results showed that at the wavelength of 600 nm and after the iodometric titration, all the moringa samples (leaves, stems and seeds) contain vitamin C. Both of this two methods, spectrophotometry and iodometric titration, is able to analysis vitamin C in Morianga trees.
Determination of Iron (Fe) Species in Samples of Canned Packaging Beef Haryanti, Septi Dwi; Dzawinnuha, Hannuna; Adika, Vanadia
Indonesian Journal of Chemistry and Environment Vol 1, No 1 (2017): December 2017
Publisher : Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/ijce.v1i1.20785

Abstract

The research aims to know the content of iron metal (Fe) in samples of canned packaging beef. The destruction of the samples prior to breaking the metallic bond with organic compounds in the sample, making them easier to identify the metal content to be analyzed. The analysis of metal content of iron has been done by using Atomic Absorption Specthrophotometer. The level of iron metal contained in beef samples of A brand packaging is 40.0570 mg/kg, in B brand packaging is 25.5175 mg / Kg and in the  C brand packaging 22.9600 mg/Kg. When compared to the iron metal threshold in food as contained in SNI 01-7387-2009, then the sample of beef packaging for B and C brand is still safe because the iron content is still below 30 mg/kg. Meanwhile,  the beef corned for A brand is not safe because it is higher than 30 mg/kg.
Analysis of Cadmium Metal in Facial Moisturizing Cream with Atomic Absorbtion Spectrophotometry Method Ardhya, Hilda; Wardah, Annisa Chiyarotul; Rachmawati, Pipit
Indonesian Journal of Chemistry and Environment Vol 1, No 1 (2017): December 2017
Publisher : Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/ijce.v1i1.20783

Abstract

This study aims to determine the concentration of cadmium (Cd) metal content in various facial moisturizing creams with atomic absorbtion spectrophotometry (AAS). Samples were analyzed in the form of 6 brands of facial moisturizer cream that sold in market and selected randomly. The cream samples were destructed by wet destruction method. Next, the samples of destruction result were analyzed by atomic absorbtion spectrophotometry method with wavelength about 228.8 nm to determine the concentration of cadmium.  The results of this research showed that there was cadmium (Cd) metal content in the 2 samples of facial moisturizing cream that analyzed. Cadmium metal concentration on brand A is 0.1389 ± 2.7817 x 10-3 ppm and and brand B is 0.1321 ± 2.6468 x 10-3 ppm. Based on this result, the moustirizing creams are safe to use due to the BPOM regulation
Analysis of Total Reducing Sugar Content, Acidity Value, and Hydroxymethylfurfural (HMF) Content of Various Honey Types Ayubi, Agrib Nur
Indonesian Journal of Chemistry and Environment Vol 1, No 1 (2017): December 2017
Publisher : Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/ijce.v1i1.20786

Abstract

The aims of this research are to determine the total reducing sugar content, acidity value, and hydroxymethylfurfural (HMF) content of various honey types in Special Region of Yogyakarta and Central Java. Those types sample of honey are sengon, randu, kelengkeng, rambutan, and kopi honey from several places in Yogyakarta and Central Java. This research using analytical method, there are iodometry titration, acid-base titration, and UV-Vis spectrophotometry. The result of total reducing sugar content from sengon honey 74.40%, randu honey 61.42%, kelengkeng honey 62.07%, rambutan honey 88.14%, and kopi honey 87.04%. Acidity value of sengon honey 71.33 mL/Kg, randu honey 116.67 mL/Kg, kelengkeng honey 41.33 mL/Kg, rambutan honey 32.00 mL/Kg, and kopi honey 70.00 mL/Kg. HMF content of sengon honey 14.7 mg/Kg, randu honey 39.7 mg/Kg, kelengkeng honey 45.2 mg/Kg, rambutan honey 47.5 mg/Kg, and kopi honey 38.8 mg/Kg. In spite of the result of this analysis is more than the number of Indonesian National Standard of honey, those honeys are still good and doesn’t mean there are forbidden to consume it.

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