Study of Interaction between Cadmium and Bovine Serum Albumin with UV-Vis Spectrocopy Approach

Suhartono, Eko; Thalib, Iskandar; Aflanie, Iwan; Noor, Zairin; Idroes, Rinaldi

doi:10.1088/1757-899x/350/1/012008

Cited by 30 publications

(13 citation statements)

References 7 publications

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“…Therefore, the analytical method and instruments have to be accurate and reliable. The methods recommended for such purposes, some of them, are ICP-OES, UV-Vis Spectrophotometer [23,27], ICP-AES, ICP-MS [26] and Laser-Induced Breakdown Spectroscopy [28][29][30] for cation analysis, Ion Chromatography for either cation or anion analysis [31], Elemental Analyzer-Isotope Ratio Mass Spectrophotometry [32] and Laser Absorption Spectroscopy [33] for isotope analysis.…”

Section: Introductionmentioning

confidence: 99%

Geochemical Investigation on Jaboi Manifestation, Jaboi Volcano, Sabang, Indonesia

Idroes¹

2021

GEOMATE

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Geochemical studies have been conducted in the geothermal system of Jaboi manifestation, Sabang, Aceh. There are three sub-area of geothermal water sites in this area, that are production-injection wells of PT Sabang Geothermal Energy, Jaboi crater, and hot spring pond. The fumaroles were also found in the Jaboi crater. The mineral contents were analyzed by ion chromatography, alkalimetry, and spectrophotometry, the isotope was determined by Laser Absorption Spectrophotometer, while the gas contents were analyzed by Gas Chromatography-TCD. The obtained data were used to estimate the reservoir temperature by using geothermometers, FT-HSH diagram, and CH4/CO2-H2/Ar diagram. The graphical analysis were also done to obtain chemical and physical characteristics. The water analysis showed that the reservoir temperatures were in range of 253.2-416.5 °C. The water types of production-injection wells, Jaboi crater and hot spring pond were chloride, sulphate and bicarbonate-sulphate mixtures, respectively. The fluid equilibria showed that only production well was mature water while the other sites were immature ones. The water composition source of production-injection wells and hot spring pond were marine sedimentary rocks, Jaboi crater JK1 and JK4 were magmatic gas, and Jaboi crater JK2 was hot rock. The water origin of production-injection wells were both magmatic and meteoric, Jaboi craters were magmatic water, and hot spring pond was meteoric water. The gas analysis in Jaboi crater fumaroles showed that the reservoir temperature were in range of 196.9-362.8 ºC, and the gas origin were earth's crust. The reservoir temperatures showed a high-temperature geothermal system which is suitable for power plant.

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Section: Introductionmentioning

confidence: 99%

Geochemical Investigation on Jaboi Manifestation, Jaboi Volcano, Sabang, Indonesia

Idroes¹

2021

GEOMATE

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“…Several analysis methods or instruments have been introduced to ensure the food quality, including conducting physical assessment [5], the use of chromatography [6], laser [7], electronic sensing [8], biosensor [9,10], and colourimetric [11]. ese methods use an approach of response between instrument and food content such as fatty acid [12,13], carbohydrate, and protein [14] or degradation products like acidic or basic substances [15,16].…”

Section: Introductionmentioning

confidence: 99%

Betacyanin as Bioindicator Using Time-Temperature Integrator for Smart Packaging of Fresh Goat Milk

Rahimah

Malinda

Zaida

et al. 2020

The Scientific World Journal

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Smart packaging is a packaging system with embedded sensor or indicator technology, which provides information on the quality of the product, especially perishable foods such as goat milk. One application of smart packaging is to use a time-temperature bioindicator. The purpose of this study was to determine the quality of fresh goat milk during storage at freezing temperatures (−20 ± 2°C) for 31 days and room temperature (25 ± 3°C) for 24 hours using a time-temperature indicator by utilizing a natural dye betacyanin. The method used was descriptive analysis, and the data obtained were processed using the correlation regression test. The samples were observed at freezing temperature every 24 hours and room temperature at 0, 1, 2, 3, 4, 5, 6, 8, 10, and 24 hours. The observation criteria consisted of changes in bioindicator color, milk pH, and total microbes. The results showed that color changes of the bioindicator film at room temperature were more noticeable than at freezing temperature. Based on changes in color of the bioindicator at room temperature, the sample was safe for consumption until the 5th hour with pH 6.51, and the biofilm color characteristics were L∗ = 82.49, a∗ = 21.46, and b∗ = −7.33, but the total number of microbes did not fulfil Indonesian National Standard at the 24th hour, i.e., 1.36 × 106 CFU/ml. At freezing temperatures, fresh goat milk was still safe for consumption until the 31st day with pH 6.51 and total microbe of 1.89 × 105 CFU/ml, and the biofilm color characteristics were L∗ = 80.52, a∗ = 24.15, and b∗ = −7.91. The results of this study concluded that the milk expiration limit based on the betacyanin indicator was 5 hours at room temperature and 31 days at freezing temperature.

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“…However, in excess level, the system can be broken [1]. The high exposure on the external body by heavy metal [2], [3], pathogen [4], [5], and radiation [6] can impair the skin protector. In a tropical country like Indonesia, the exposure of sunlight radiation is inevitable.…”

Section: Introductionmentioning

confidence: 99%

Sunscreen Activities of Bark Artocarpus heterophyllus against Ultraviolet Ray (Sun Protection Factor) in Lotion Formula

Arifin¹,

Nasution²,

Savila³

et al. 2020

Open Access Maced J Med Sci

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Sunscreen lotion is used to prevent the skin from ultraviolet radiation, which can cause various diseases, such as acne, burning, redness, swelling, wrinkling, and skin cancer. Natural sunscreen lotions contain chemical compounds that have relatively long conjugated double bonds or the presence of hydroxyl groups. The result of the maceration of Artocarpus heterophyllus bark produced ethanol and methanol extracts, based on gas chromatography-mass spectrometry characterization, both extracts contained straight and cyclic chain compounds which had conjugated double bonds. The number of double-bonded compounds in ethanol extract is more than in methanol extract. Sun protection factor (SPF) value of ethanol extract lotion formula is greater than SPF value of methanol extract lotion formula, the SPF value ethanol extract lotion formula at concentration 2; 2.5; 5; 7.5; and 12% were consecutive: 29.801 ± 0.224; 32.797 ± 0.161; 33.808 ± 0.165; 34.580 ± 0.295; and 35.015 ± 0.169, (SPF value of negative control: 0.435 ± 0.2839 and positive control, 31 ± 0.0284). SPF value of methanol extract lotion formula for concentration 2; 2.5; 5; 7.5; and 12% was 14.407 ± 0.010; 26.549 ± 0.476; 30.274 ± 0.208; 32.031 ± 0.302; and 31.942 ± 0.324. Each extract SPF value is higher than the SPF value of the lotion formula. The result of testing the physical properties of the lotion formula shows that the lotion type is o/w, the lotion viscosity ranges from 2450 cP to 4780.0 cP meet Standar Nasional Indonesia (SNI) standards. The pH test results ranged from 6.020 to 7.845 meets SNI. The spreading power of the lotion ranges from 4.70 to 6.75 cm. The adhesive strength of the lotion ranges from 16 to 41 s.

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Study of Interaction between Cadmium and Bovine Serum Albumin with UV-Vis Spectrocopy Approach

Cited by 30 publications

References 7 publications

Geochemical Investigation on Jaboi Manifestation, Jaboi Volcano, Sabang, Indonesia

Geochemical Investigation on Jaboi Manifestation, Jaboi Volcano, Sabang, Indonesia

Betacyanin as Bioindicator Using Time-Temperature Integrator for Smart Packaging of Fresh Goat Milk

Sunscreen Activities of Bark Artocarpus heterophyllus against Ultraviolet Ray (Sun Protection Factor) in Lotion Formula

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