scholarly journals Determination of Macroelements, Transition Elements, and Anionic Contents of Commercial Roasted Ground Coffee Available in Jordanian Markets

Beverages ◽  
2020 ◽  
Vol 6 (1) ◽  
pp. 16
Author(s):  
Sati Y. Al-Dalain ◽  
Moawiya A. Haddad ◽  
Salvatore Parisi ◽  
Mousa Atallah Al-Tarawneh ◽  
Haitham Qaralleh
Keyword(s):  
Human Health ◽  
Atomic Absorption Spectroscopy ◽  
Dry Weight ◽  
Transition Elements ◽  
Sodium Potassium ◽  
Phosphate Ions ◽  
Iron Nickel ◽  
Sodium And Potassium ◽  
Ground Coffee

Coffee is one of the most common drinks worldwide. Due to the variability of elements composition, coffee is important for human health. The aim of this study is to assess the concentration of certain selected elements of commercial samples of roasted ground coffee available in Jordanian markets. The concentrations of macroelement components (sodium, potassium, and calcium), transition elements (lead, cadmium, iron, nickel, and copper), and anion contents (sulfate, nitrate, fluoride, chloride, and phosphate ions) have been determined in nine samples using atomic absorption spectroscopy. Obtained results showed that all tested samples contain macroelementscalcium, sodium, and potassium, in a concentration ranging from 6.18 to 162.6 μg/gram of dry weight (in detail: calcium, 6.96–9.81 μg/g; sodium, 121.54–162.60 μg/g; potassium, 6.18–10.23 μg/g). Regarding transition elements, all samples tested contained variable concentrations of iron and copper (1.26–2.07 and 0.24–0.66 μg/g, respectively), while they lacked lead, cadmium, and nickel (only one sample contained 0.1 μg/g for nickel). In addition, all tested samples contained variable anionic concentrations. The lack of toxic selected elements (lead, cadmium, and nickel) in these samples appears to indicate the significance of these coffee samples as a source of useful selected elements for human health.

SODIUM, POTASSIUM, NITROGEN, PHOSPHORUS, AND LIPID IN MUSCLE MITOCHONDRIA ISOLATED IN SUCROSE MEDIA OF VARYING CONCENTRATIONS

1963 ◽  
Vol 41 (4) ◽  
pp. 831-847 ◽  
Author(s):  
A. R. Craston ◽  
J. F. Manery
Keyword(s):  
Analytical Data ◽  
Dry Weight ◽  
The Other ◽  
High Concentration ◽  
Sodium Potassium ◽  
Excess Sodium ◽  
Sodium And Potassium ◽  
Nitrogen Phosphorus ◽  
Better Than ◽  
Floating Layer

Mitochondrial pellets isolated in 0.25 M sucrose from pigeon breast muscle and washed once contained 77 ± 1.43 g water per 100 g pellet, 7.8 ± 2.0 meq K and 4.29 meq Na per kg dry weight. The Na:K ratio for mitochondria was almost 5 times that of muscle, suggesting that mitochondria might contain some of the "excess" sodium of skeletal muscle. A comparison of mitochondria isolated in three different sucrose media (0.25 M, 0.45 M, 0.88 M) was made with respect to sodium, potassium, and water concentrations of unwashed mitochondria (M1) and those washed once (M2). Washing always resulted in a loss of sodium and potassium but neither repeated washing nor suspension in hypotonic solutions removed all of the cations. These findings and the high concentration ratios observed between mitochondria and the suspension media attested to the presence of "bound" or restricted cations. A few analyses for nitrogen, phosphorus, and lipid made on the various mitochondrial preparations, on microsomal-like material, and on a "floating layer" believed to be washed out of M1 preparations by resuspension, drew attention to the possibility of altering the character of the unit of reference (dry weight, mg N, etc.) used for expressing concentrations of cations. The "floating layer" was unique in being high in lipid and high in sodium. Analytical data and electron micrographs provided evidence that 0.45 M sucrose preserved the chemical and morphological integrity of the mitochondria better than the other concentrations tested.

scholarly journals Biochemistry of the normal dura mater of the human brain determination of water, sodium, potassium, calcium, phosphorus, magnesium, copper, iron, sulfur and nitrogen contents

1969 ◽  
Vol 27 (2) ◽  
pp. 85-88 ◽  
Author(s):  
Horacio M. Canelas ◽  
Julinho Aisen ◽  
Francisco B. De Jorge ◽  
Abrão Anghinah
Keyword(s):  
Human Brain ◽  
Dura Mater ◽  
Craniocerebral Trauma ◽  
Dry Weight ◽  
Sodium Potassium ◽  
Iron Sulfur ◽  
Calcium Phosphorus ◽  
Nitrogen Contents

The concentrations of water, sodium, potassium, calcium, phosphorus, magnesium, copper, iron, sulfur, and nitrogen were determined in samples of apparently normal dura mater removed from 18 subjects recently dead by craniocerebral trauma. The average concentrations expressed in dry weight were: water 79.55 g/100 g ± 2.52; sodium 1.63 mequiv/100 g ±0.27; potassium 3.68 mequiv/100 g ± 0.66; calcium 119.84 mg/100 g ± 107.40; phosphorus 68.2 mg/100 g ± 34.5; magnesium 0.61 mequiv/100 g ± 0.37; copper 249.8 /xg/100 g ± 109.4; iron 0.82 mg/100 g ± 0.28; sulfur 490.7 mg/100 g ± 22.5; nitrogen 3.33 g/100 g ± 0.17.

Ion Exchange Resin Separation and Flame Photometric Determination of Sodium, Potassium, Magnesium, Calcium, and Strontium

1965 ◽  
Vol 48 (4) ◽  
pp. 719-722
Author(s):  
Eugene A Breault
Keyword(s):  
Exchange Resin ◽  
Photometric Determination ◽  
Ion Exchange Resin ◽  
Resin Column ◽  
Sodium Potassium ◽  
Resin Separation ◽  
Sodium And Potassium ◽  
Potassium Magnesium ◽  
Oxygen Flame

Abstract The cation exchange separation of metallic chlorides by hydrochloric acid on an Amberlite CG-120 resin (200-400 mesh) column was investigated. Commercially available resin was used in the experiments after the “fines” were removed by several water washings. A resin column (24 cm long by 12 mm diameter) gave excellent separation of sodium and potassium, with a total volume of 500 ml of 0.5N HCI at a flow rate of 0.55 ml/min. The recovery of each metal was 100%. Elution of the other three metals required 1100 ml of liV HCl; separation was very good but recoveries were poor. AH of the metals were determined with a Beckman DU with photomultiplier and hydrogen-oxygen flame attachment.

SODIUM, POTASSIUM, NITROGEN, PHOSPHORUS, AND LIPID IN MUSCLE MITOCHONDRIA ISOLATED IN SUCROSE MEDIA OF VARYING CONCENTRATIONS

1963 ◽  
Vol 41 (1) ◽  
pp. 831-847 ◽  
Author(s):  
A. R. Craston ◽  
J. F. Manery
Keyword(s):  
Analytical Data ◽  
Dry Weight ◽  
The Other ◽  
High Concentration ◽  
Sodium Potassium ◽  
Excess Sodium ◽  
Sodium And Potassium ◽  
Nitrogen Phosphorus ◽  
Better Than ◽  
Floating Layer

Mitochondrial pellets isolated in 0.25 M sucrose from pigeon breast muscle and washed once contained 77 ± 1.43 g water per 100 g pellet, 7.8 ± 2.0 meq K and 4.29 meq Na per kg dry weight. The Na:K ratio for mitochondria was almost 5 times that of muscle, suggesting that mitochondria might contain some of the "excess" sodium of skeletal muscle. A comparison of mitochondria isolated in three different sucrose media (0.25 M, 0.45 M, 0.88 M) was made with respect to sodium, potassium, and water concentrations of unwashed mitochondria (M1) and those washed once (M2). Washing always resulted in a loss of sodium and potassium but neither repeated washing nor suspension in hypotonic solutions removed all of the cations. These findings and the high concentration ratios observed between mitochondria and the suspension media attested to the presence of "bound" or restricted cations. A few analyses for nitrogen, phosphorus, and lipid made on the various mitochondrial preparations, on microsomal-like material, and on a "floating layer" believed to be washed out of M1 preparations by resuspension, drew attention to the possibility of altering the character of the unit of reference (dry weight, mg N, etc.) used for expressing concentrations of cations. The "floating layer" was unique in being high in lipid and high in sodium. Analytical data and electron micrographs provided evidence that 0.45 M sucrose preserved the chemical and morphological integrity of the mitochondria better than the other concentrations tested.

Analysis in the Concentration, Determination and Comparison of some Mineral Elements in the Natural Salt-Licks Utilized by Elephants: Mt. Elgon National Park Case Study

2011 ◽  
Vol 356-360 ◽  
pp. 1796-1800
Author(s):  
Anne J. Sitienei ◽  
Ji Wen Ge ◽  
Shadrack M. Ngene ◽  
Mupenzi Jean De La Paix ◽  
Fred. K. Waweru
Keyword(s):  
National Park ◽  
Eating Behaviour ◽  
Mineral Elements ◽  
Individual Identification ◽  
Mineral Supplement ◽  
Sodium Potassium ◽  
Calcium Magnesium ◽  
Sodium And Potassium

The aim of the study undertaken at Mt. Elgon National Park was to determine the chemical composition and variation of some mineral elements in saltlicks utilized by elephants in Mt. Elgon National Park. Laboratory analysis was done for individual identification and determination of the concentration for sodium potassium, calcium, magnesium and phosphorus. Rock samples were processed using Double Acid Technique. The elephants of Mt. Elgon have been engaging in earth eating behaviour. regular visits to saltlicks located in caves is as a result of some of the mineral elements such as sodium potassium and calcium. The park management could overcome the problem of elephants entering the saltlicks by having sodium and potassium mineral supplement policy for the park.

BIOASSAY OF PROLACTIN

1969 ◽  
Vol 60 (1) ◽  
pp. 91-100 ◽  
Author(s):  
Charles S. Nicoll
Keyword(s):  
Epithelial Cells ◽  
Lipid Content ◽  
Dry Weight ◽  
Fat Content ◽  
Assay Sensitivity ◽  
Mucosal Epithelium ◽  
Wet Weight ◽  
Total Dry Weight

ABSTRACT The response of the pigeon crop-sac to systemically acting prolactin (injected subcutaneously) was evaluated by measuring the wet weight of the responsive lateral lobes of the organ and by determining the dry weight of a 4 cm diameter disc of mucosal epithelium taken from one hemicrop. Of several different injection schedules tested, administration of prolactin in four daily injections was found to yield optimal responses. When compared with a graded series of prolactin doses, measurement of the mucosal dry weight proved to be a better method of response quantification than determination of the crop-sac wet weight with respect to both assay sensitivity and precision. The submucosal tissue of the crop-sac was estimated to constitute about 64 % of the total dry weight of the unstimulated organ and it was found to be relatively unresponsive to prolactin stimulation in comparison with the mucosa. The lipid content of the mucosal epithelium was determined using unstimulated crop-sacs or tissues which showed varying degrees of prolactin-induced proliferation. The fat content of the mucosal epithelial cells increased only slightly more rapidly than the dry weight or the defatted dry weight of the mucosa. Suggestions are made for the further improvement of the systemic crop-sac assay for prolactin.

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