scholarly journals KARAKTERISTIK SENSORIS DAN KANDUNGAN LOGAM BERAT MINUMAN FUNGSIONAL OKRA-JAHE DENGAN BERBAGAI JENIS PEMANIS

2021 ◽  
Vol 1 (1) ◽  
pp. 23-30
Author(s):  
Julfi Amelia
Keyword(s):  
Heavy Metals ◽  
Chemical Analysis ◽  
Sensory Properties ◽  
Sensory Acceptability ◽  
Lady’S Finger ◽  
Bioactive Content ◽  
Good For ◽  
Functional Drink ◽  
Herbal Plant

Okra merupakan sayuran yang dapat dikonsumsi dalam keadaan segar maupun diolah. Okra dapat dimanfaatkan menjadi minuman kesehatan karena kaya akan zat gizi dan fitokimia yang bermanfaat bagi kesehatan. Minuman okra memiliki nilai sensori yang kurang baik, sehingga perlu adanya bahan tambahan untuk memperbaiki hal tersebut. Bahan tambahan yang dapat digunakan adalah jahe dan pemanis untuk meningkatkan nilai sensori aroma dan rasa. Jahe merupakan tanaman herbal yang memiliki kandungan yang baik bagi kesehatan serta memiliki flavor yang khas. Pemanis yang digunakan dalam penelitian ini adalah daun stevia, madu, sorbitol dan sukrosa. Penelitian ini bertujuan untuk mengkarakterisasi sifat sensori dan kandungan logam berat minuman fungsional okra-jahe dengan penambahan berbagai jenis pemanis. Sifat sensori menggunakan uji hedonik dengan parameter warna, rasa, aroma, dan kekentalan, sedangkan pengujian kimia terhadap kadar logam berat meliputi Pb, Cd, As, Hg, Sn. Perbandingan antara okra:jahe:pemanis adalah 75%:3%:22%. Berdasarkan uji hedonik, untuk parameter warna dan kekentalan minuman okra dengan pemanis sorbitol mendapatkan skor yang tertinggi. Sedangkan pada parameter rasa dan aroma, minuman okra dengan pemanis sukrosa mendapatkan skor yang tertinggi. Hasil analisis kadar logam berat Pb, Cd, As, Hg, dan Sn menunjukkan hasil negatif di semua sampel.  ABSTRACT: Lady’s finger is a vegetable that can be consumed fresh or processed. Lady’s finger can be used as a functional drink because it is rich in nutrients and phytochemicals that are beneficial to health. Unfortunately this drink has poor sensory performance, so it needs additional ingredients to improve this sensory properties. Additional ingredients include ginger and sweetener to increase the sensory acceptability of aroma and taste. Ginger is an herbal plant that has a bioactive content that is good for health and has a distinctive flavor. The sweeteners used in this study were stevia leaves, honey, sorbitol and sucrose. This study aimed to characterize the sensory properties and heavy metals contet of lady’s finger-ginger functional drinks with the addition of various types of sweeteners. Sensory properties were observed using hedonic tests with parameters of color, taste, aroma, and viscosity, while the chemical analysis was focused on the levels of heavy metals including Pb, Cd, As, Hg, Sn. The ratio of lady’s finger: ginger : sweetener in the formulation were 75: 3: 22. Based on the hedonic test, for color and viscosity of lady’s finger drinks with sorbitol sweetener got the highest score. While on the taste and aroma parameters, lady’s finger drinks with sucrose sweetener get the highest score. The results of heavy metals on Pb, Cd, As, Hg, and Sn showed undetected in all samples. Keywords: Drink, ginger, lady’s finger, sweeteners

Self-Assembled Monolayers of 12-Mercaptododecylphosphonic Acid on Titania Particles; Application to the Extraction of Heavy Metals

2004 ◽  
Vol 847 ◽  
Author(s):  
Sébastien Anthérieu ◽  
Florence Brodard-Séverac ◽  
Gilles Guerrero ◽  
P. Hubert Mutin
Keyword(s):  
Heavy Metals ◽  
Chemical Analysis ◽  
Phosphonic Acid ◽  
Metal Extraction ◽  
Self Assembled Monolayers ◽  
Extraction Ability ◽  
Self Assembled Monolayer ◽  
Inorganic Hybrid ◽  
Assembled Monolayers ◽  
Self Assembled

ABSTRACTTitania particles (P25 DEGUSSA AG) were treated by a solution of 12-mercaptododecyl-phosphonic acid (MDPA) in toluene to obtain an organic-inorganic hybrid material with thiol functions at the surface. This material was characterized by chemical analysis, solid state 31P MAS NMR and FTIR spectroscopies, and XPS. Reaction of the phosphonic acid end of MDPA with the TiO2 surface led to the formation of a relatively dense and well-ordered self-assembled monolayer (SAM), with a density of about 3.9 SH functions per nm2. This material was tested for the extraction of mercury in water at pH 7, 9, and 11. Chemical analysis indicated no loss of SH functionality, even at pH 11. The best extraction results were obtained at pH 9 and 11, with a metal extraction ability between 85 and 90%.

scholarly journals Data Analysis of Beach Sands’ Chemical Analysis Using Multivariate Statistical Methods and Heavy Metal Distribution Maps: The Case of Moonlight Beach Sands, Kemer, Antalya, Turkey

Symmetry ◽  
2020 ◽  
Vol 12 (9) ◽  
pp. 1538 ◽  
Author(s):  
Fusun Yalcin
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Data Analysis ◽  
Chemical Analysis ◽  
Statistical Methods ◽  
Risk Index ◽  
Multivariate Statistical Methods ◽  
Multivariate Statistical ◽  
Distribution Maps ◽  
Beach Sands

Multivariate statistical methods are widely used in several disciplines of fundamental sciences. In the present study, the data analysis of the chemical analysis of the sands of Moonlight Beach in the Kemer region was examined using multivariate statistical methods. This study consists of three parts. The multivariate statistical analysis tests were described in the first part, then the pollution indexes were studied in the second part. Finally, the distribution maps of the chemical analyses and pollution indexes were generated using the obtained data. The heavy metals were mostly observed in location K1, while they were sorted as follows based on their concentrations: Mg > Fe > Al > Ti > Sr > Mn > Cr > Ni > Zn > Zr > Cu > Rb. Also, strong positive correlations were found between Si, Fe, Al, K, Ti, P. According to the results of factor analysis, it was found that four factors explained 83.5% of the total variance. On the other hand, the coefficient of determination (R2) was calculated as 63.6% in the regression model. Each unit increase in the value of Ti leads to an increase of 0.022 units in the value of Si. Potential Ecological Risk Index analysis results (RI < 150) revealed that the study area had no risk. However, the locations around Moonlight Beach are under risk in terms of Enrichment Factor and Contamination Factor values. The index values of heavy metals in the anomaly maps and their densities were found to be successful; and higher densities were observed based on heavy metal anomalies.

scholarly journals Chemical and microstructural analyses for heavy metals removal from water media by ceramic membrane filtration

2016 ◽  
Vol 75 (2) ◽  
pp. 439-450 ◽  
Author(s):  
Asmaa Ali ◽  
Abdelkader Ahmed ◽  
Ali Gad
Keyword(s):  
Heavy Metals ◽  
Chemical Analysis ◽  
Membrane Filtration ◽  
Ceramic Membrane ◽  
Low Cost ◽  
Ceramic Membranes ◽  
Filtration Process ◽  
X Ray ◽  
Before And After ◽  
Water Media

This study aims to investigate the ability of low cost ceramic membrane filtration in removing three common heavy metals namely; Pb2+, Cu2+, and Cd2+ from water media. The work includes manufacturing ceramic membranes with dimensions of 15 by 15 cm and 2 cm thickness. The membranes were made from low cost materials of local clay mixed with different sawdust percentages of 0.5%, 2.0%, and 5.0%. The used clay was characterized by X-ray diffraction (XRD) and X-ray fluorescence analysis. Aqueous solutions of heavy metals were prepared in the laboratory and filtered through the ceramic membranes. The influence of the main parameters such as pH, initial driving pressure head, and concentration of heavy metals on their removal efficiency by ceramic membranes was investigated. Water samples were collected before and after the filtration process and their heavy metal concentrations were determined by chemical analysis. Moreover, a microstructural analysis using scanning electronic microscope (SEM) was performed on ceramic membranes before and after the filtration process. The chemical analysis results showed high removal efficiency up to 99% for the concerned heavy metals. SEM images approved these results by showing adsorbed metal ions on sides of the internal pores of the ceramic membranes.

scholarly journals Effect of Ilex x meserveae Aqueous Extract on the Quality of Dry-Aged Beef

2021 ◽  
Vol 2021 ◽  
pp. 1-6
Author(s):  
Anna Marietta Salejda ◽  
Aleksandra Szmaja ◽  
Łukasz Bobak ◽  
Anna Zwyrzykowska-Wodzińska ◽  
Anna Fudali ◽  
...  
Keyword(s):  
Fatty Acid ◽  
Lipid Oxidation ◽  
Fatty Acid Profile ◽  
Aqueous Extract ◽  
Shear Force ◽  
Sensory Properties ◽  
Beef Quality ◽  
Sensory Acceptability ◽  
Color Parameters

The effect of meat marinating with aqueous extract of Ilex meserveae dried leaves on dry-aged beef quality was investigated. Shear force, TBARS value, color parameters, fatty acid profile, and sensory properties were evaluated in beef cuts dry-aged for 21 days. The use of Ilex meserveae dried leaves as marinade at 0.5, 1.0, and 2.0% w / v did not affect the shear force and color parameters of dry-aged beef. The marinating of beef cuts with Ilex meserveae resulted in efficient prevention of lipid oxidation without impairing sensory acceptability. Aqueous extract Ilex meserveae can be applied as a natural ingredient in meat marinade to prevent peroxidation.

scholarly journals DIFFERENT MODERN TECHNIQUES USED IN CHURNA KALPANA: A REVIEW

2020 ◽  
Vol 11 (5) ◽  
pp. 140-142
Author(s):  
Jagadeesh G Mitti
Keyword(s):  
Heavy Metals ◽  
Chemical Analysis ◽  
Microbial Contamination ◽  
Dosage Forms ◽  
Size Reduction ◽  
Combined Effect ◽  
Physico Chemical ◽  
Modern Methods ◽  
Mixing Techniques

To prepare any formulation in bulk quantity it needs a machine. The machines which manufacture the formulations in a bulk quantity will work on the basis of modern techniques. These techniques can be adopted to prepare different dosage forms through their method of preparations. Churna is also one among the different dosage forms which is having versatile usage and need to be prepared in bulk quantity. To achieve this, different modern methods like size reduction, size separation and mixing of powders and techniques viz. cutting, compression, impact, attrition and combined effect of impact and attrition are adopted, along with this sieving and mixing techniques are also adopted. To assure the quality of churna kalpana physico chemical analysis should be done like fineness of Particles, Presence of Heavy Metals, Test for microbial contamination etc.

The influence of dried fruits enrichment on sensory properties of bitter and milk chocolates and bioactive content of their extracts affected by different solvents

LWT ◽  
2013 ◽  
Vol 53 (1) ◽  
pp. 360-369 ◽  
Author(s):  
Draženka Komes ◽  
Ana Belščak-Cvitanović ◽  
Svjetlana Škrabal ◽  
Aleksandra Vojvodić ◽  
Arijana Bušić
Keyword(s):  
Sensory Properties ◽  
Dried Fruits ◽  
Bioactive Content

Chemical composition of composted grape marc

2009 ◽  
Vol 60 (5) ◽  
pp. 1265-1271 ◽  
Author(s):  
Antonio F. Patti ◽  
G. (Jason) Issa ◽  
Ron Smernik ◽  
Kevin Wilkinson
Keyword(s):  
Heavy Metals ◽  
Chemical Composition ◽  
Chemical Analysis ◽  
Soluble Salts ◽  
Grape Marc ◽  
Potassium Sources ◽  
Low Levels ◽  
Very High ◽  
Detailed Chemical

Composted grape marc, produced at the vineyard using different procedures, is generally returned into the vineyard. Information on the chemical composition of these grape marc composts is lacking, particularly the variability that may result from different composting practices. In this study, grape marc composts, varying in age from 3 months to 3 years, were collected from four different vineyards and subjected to detailed chemical analysis. The chemical analysis revealed that all the grape marc composts contained levels of free potassium, in the range of 2–3% w/w. Plant macronutrients such as Ca, S, Mg were present at low levels (&lt;1% w/w), while phosphorus (0.1–0.3% w/w) and nitrogen (1–2% w/w) levels were not very high and mainly present in “plant unavailable” form. The levels of soluble salts, though not excessive, were elevated in all the composts. These salt levels could cause a problem in some soils. Heavy metals were not present in any significant levels. All the grape marc composts analysed provided some benefit in returning nutrients into the vineyard and all were significant potassium sources.

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