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45 matches found for Milk

Analytical Method: Urea in milk (Photometry)

Reagents and accessories: Cat.No. 100807 Trichloroacetic acid for analysis Cat.No. 116754 Water for analysis Cat.No. 100573 ortho-Phosphoric acid 85 % for analysis Cat.No. 100731 Sulfuric acid 95 - 97 % for analysis Cat.No. 103943 Iron(III) chloride hexahydrate for analysis Cat.No. 102918 Diacetyl m...

HPLC Analysis of Milk Thistle Standards on Ascentis® Express C18

column Ascentis Express C18, 10 cm x 3 mm I.D., 2.7 µm particles (53814-U) column temp. 35 °C mobile phase [A] water with 0.1% formic acid; [B] methanol gradient held at 35% B for 3 min; 35 to 45% B in 10 min; held at 45% B for 2 min; 45 to 100% B in 5 min flow rate 0.6 mL/min pressure 4105 psi (283...

GC Analysis of Volatiles in Milk Thistle Honey on SUPELCOWAX® 10 after SPME using 50/30 μm DVB/Carboxen/PDMS Fiber

sample/matrix 5 g milk thistle honey + 5 mL bidistilled water in a 20 mL vial, allowed to equilibrate at 50 °C for 15 min with magnetic stirring desorption process 250 °C for 2 min extraction headspace, 50 °C for 40 min with magnetic stirring SPME fiber 2 cm 50/30 µm divinylbenzene/carboxen on polyd...

HPLC Analysis of Milk Proteins on HiTrap® SP

column HiTrap SP, 1 mL (54817) mobile phase [A] 50 mM sodium acetate, pH 6.0; [B] 50 mM sodium acetate/1.0 M sodium chloride, pH 6.0 flow rate 1 mL/min injection 0.5 mL filtered casein-precipitated human milk (buffer exchanged to mobile phase A) detector UV, 280 nm Categories Analytical Chromatograp...

GC Analysis of Volatiles in Milk Thistle Honey on SUPELCOWAX® 10 after Dynamic Headspace (DHS) using 20/35 Tenax® TA Tube

sample/matrix 25 g milk thistle honey in a 200 mL Erlenmeyer flask at 45 C, purged with nitrogen at 60 mL/min for 30 min as a stripping gas to collect onto a Tenax® TA tube dry purge back-flushed with nitrogen, 60 mL/min at room temperature for 5 min thermal desorption tube 20/35 Tenax® TA, 90 mg de...

Application Note – Peroxidase in Milk

Thermal treatment has a crucial effect on the quality and hygiene of food milk. The main aim of heat treatment is to kill pathogenic microorganisms or agents which cause spoilage. However, the treatment also results in changes to further milk constituents, such as, for example, deactivation of enzym...

Determination of Water Content in Powdered milk Using Karl Fischer Titration

Foodstuffs Foodstuffs Foodstuffs encompass the most diverse products. Depending on whether carbohydrate-rich, fatty or proteinrich substances are under investigation, different working techniques are favourable. Complex matrices that dissolve slowly, or where the water can only be slowly extracted, ...

LC/MS Analysis of Phospholipids in Milk on Ascentis® Express HILIC after SPE using Supelclean™ Si, Shotgun HPLC Analysis

sample/matrix Phospholipids from 10 mL cow's milk (Folch method extraction) SPE tube/cartridge Supelclean LC-Si, 1 g/6 mL (57051) condition hexane sample addition 1 mL extract in chloroform/methanol (2:1, v/v) washing 3 mL of hexane/diethylether (8:2, v/v) and 3 mL of hexane/diethylether (1:1, v/v) ...

GC Analysis of FAMEs in Goat Milk on SLB®-IL111

column SLB-IL111, 100 m x 0.25 mm I.D., 0.20 µm (29647-U) oven 50 °C (4 min), 8 °C/min to 160 °C (25 min), 4 °C/min to 220 °C carrier gas hydrogen, 40 cm/sec sample FAMEs from 100 mg goat milk transesterified in sodium methoxide/methanol + boron trifluoride injection 0.2 µL10:1 split inj. temp. 230 ...

GC Analysis of PCBs in Whole Cow Milk (Spiked) on SLB®-5ms (20 m x 0.18 mm I.D., 0.18 μm) after QuEChERS Cleanup using Supel™ QuE Z-Sep, Fast GC Analysis

sample preparation SPE (Solid Phase Extraction) sample/matrix 10 g whole cow's milk extraction tube Supel™ QuE Non-buffered tube (4 g magnesium sulfate, 1 g sodium chloride) (55294-U) clean-up tube Supel™ QuE Z-Sep 150 mg, magnesium sulfate (150 mg, part no. 63135) (55299-U) column SLB-5ms, 20 m x 0...

HPLC Analysis of Isoflavones in Soy Milk on Ascentis® Express RP Amide (Milk Brand 1)

column Ascentis Express RP-Amide, 10 cm x 3 mm I.D., 2.7 µm particles (53918-U) column temp. 30 °C mobile phase [A] 0.1% formic acid in water; [B] 0.1% formic acid in methanol gradient held at 15% B for 1 min; 15 to 100% in 5 min; held at 100% B for 1 min; 100-15% B in 0.1 min; held at 15% B for 2.9...

GC Analysis of FAMEs in Human Milk on SLB®-IL111

column SLB-IL111, 100 m x 0.25 mm I.D., 0.20 µm (29647-U) oven 50 °C (4 min), 8 °C/min to 160 °C (25 min), 4 °C/min to 220 ºC carrier gas hydrogen, 40 cm/sec sample FAMEs from 100 mg human milk transesterified in sodium methoxide/methanol + boron trifluoride injection 0.2 µL10:1 split inj. temp. 230...

GC Analysis of FAMEs in Mozzarella (Buffalo Milk Source) on SLB®-IL111

column SLB-IL111, 100 m x 0.25 mm I.D., 0.20 µm (29647-U) oven 70 ºC (4 min), 12 ºC/min to 160 °C (25 min), 4 ºC/min to 220 ºC carrier gas hydrogen, 40 cm/sec sample FAMEs from 100 mg buffalo milk source mozzarella transesterified in sodium methoxide/methanol + boron trifluoride injection 0.2 µL10:1...

Application Notes Reflectometry – Nitrate in Milk Powder

Reagents: Catalog No. 116971 Reflectoquant® Nitrate Test Catalog No. 116995 Reflectoquant® Nitrate Test Catalog No. 117246 Reflectometer RQflex® 20 Catalog No. 110537 Carrez clarification Catalog No. 109137 Sodium hydroxide solution 1 M Folded filter This application note pertains to RQflex®20 and a...

GC Analysis of Volatiles in Milk (Before and After Exposure to Sunlight) on Supel-Q™ PLOT after SPME using a 75 μm PDMS/Carboxen Fiber

sample/matrix 3 g of 2% milk + 10 µL internal standard solution (20 µg/mL 4-methyl-2-pentanone) (9 mL GC vial) desorption process 5 min, 250 °C extraction headspace, 15 min with constant stirring at 45 °C SPME fiber PDMS/Carboxen, 75 µm (57318) column Supel-Q PLOT, 30 m x 0.32 mm I.D. (24242) oven 7...

Determination of Water Content in Anhydrous milk fat Using Karl Fischer Titration

Foodstuffs Foodstuffs Foodstuffs encompass the most diverse products. Depending on whether carbohydrate-rich, fatty or proteinrich substances are under investigation, different working techniques are favourable. Complex matrices that dissolve slowly, or where the water can only be slowly extracted, ...

Application Notes Reflectometry – Urea in Milk (Reflectometry)

Related Products • Test Strips and Visual Tests • Reflectoquant® Instruments & Test Kits • Visual Test & MQuant® Test Strips • pH Indicator Tests • Spectroquant® Prove Spectrophotometers • Spectroquant® Test Kits • Water, Food & Environmental Analytics Catalog Related Content • Application Notes for...

Application Notes: Reflectometry – Iron in Milk Powder and Milk

Reflectometric determination after reaction with Ferrospectral® Reagents Catalog No. 116982 Reflectoquant® Iron Test Catalog No. 117246 Reflectometer RQflex® 20 Catalog No. 100456 Nitric acid 65 % Catalog No. 100630 Nitric acid 10 mol/l, Titripur® Catalog No. 1831 Ascorbic Acid, e.g. Calbiochem® Fol...

Application Notes Reflectometry – Nitrate in Milk

Related Products • Test Strips and Visual Tests • Reflectoquant® Instruments & Test Kits • VisualTest & MQuant®Test Strips • pH Indicator Tests • Spectroquant® Prove Spectrophotometers • Spectroquant® Test Kits • Water, Food & Environmental Analytics Catalog Related Content • Application Notes for P...

HPLC Analysis of Chloramphenicol in Milk on Ascentis® C18 after SPE using SupelMIP® SPE-Chloramphenicol

sample preparation SPE (Solid Phase Extraction) sample/matrix whole pasteurized milk spiked with chloramphenicol at 15 ng/mL and 38 ng/mL SPE tube/cartridge SupelMIP SPE - Chloramphenicol, 25 mg/10mL (LRC) (53210-U) condition 1 mL methanol;1 mL DI water sample addition 1 mL washing 2 x 1 mL MS-grade...

LC-MS/MS Analysis of Melamine Extracted from Milk on Ascentis® Express HILIC

column Ascentis Express HILIC, 10 cm x 2.1 mm I.D., 2.7 µm particles (53939-U) column temp. 30 °C mobile phase [A] 10 mM ammonium formate in 10:90 (v/v) water:acetonitrile; [B] 10 mM ammonium formate in 30:70 (v/v) water:acetonitrile gradient held at 0% B for 5 min; 0 to 100% B in 0.1 min; held at 1...

Application Notes: Reflectometry – Nitrite in Milk Powder

Related Products • Test Strips and Visual Tests • Reflectoquant® Instruments & Test Kits • VisualTest & MQuant® Test Strips • pH Indicator Tests • Spectroquant® Prove Spectrophotometers • Spectroquant® Test Kits • Water, Food & Environmental Analytics Catalog Related Categories • Application Notes f...

HPLC Analysis of Isoflavones in Soy Milk on Ascentis® Express RP Amide (Milk Brand 2)

column Ascentis Express RP-Amide, 10 cm x 3 mm I.D., 2.7 µm particles (53918-U) column temp. 30 °C mobile phase [A] 0.1% formic acid in water; [B] 0.1% formic acid in methanol gradient held at 15% B for 1 min; 15 to 100% in 5 min; held at 100% B for 1 min; 100-15% B in 0.1 min; held at 15% B for 2.9...

Application Notes: Reflectometry – Magnesium in Milk

Reagents Catalog No. 116124 Reflectoquant® Magnesium Test Catalog No. 117246 Reflectometer RQflex® 20 Catalog No. 109461 Buffer solution ready for use pH 9.00 Catalog No. 100807 Trichloroacetic acid This application note pertains to RQflex® 20 and all discontinued instruments (RQflex® 10, RQflex® pl...

HPLC Analysis of Bisphenol A in Spiked Milk Powder on Chromolith® High Resolution RP-18e

sample preparation 12.1 g of milik powder dissolved in 100 mL hot water. Spike100 ppb of BPA to the solution, Add 0.1% of HCl and 10% acetonitrile. Add Internal standard BPF 60 ppb. Centrifuged and filter the sample with Mellix simplecity filiter. column Chromolith® High Resolution RP-18 encapped, 1...

Determination of Water Content in Milk Using Karl Fischer Titration

Foodstuffs Foodstuffs Foodstuffs encompass the most diverse products. Depending on whether carbohydrate-rich, fatty or proteinrich substances are under investigation, different working techniques are favourable. Complex matrices that dissolve slowly, or where the water can only be slowly extracted, ...

HPLC Analysis of Herbal Supplement Containing Milk Thistle on Ascentis® Express 2.7 μm C18

column Ascentis Express C18, 10 cm x 3.0 mm I.D., 2.7 µm particles (53814-U) column temp. 35 °C mobile phase [A] water with 0.1% formic acid; [B] methanol gradient held at 35% B for 3 min; 35 to 45% B in 10 min; held at 45% B for 2 min; 45 to 100% B in 5 min flow rate 0.6 mL/min pressure 4105 psi (2...

GC Analysis of FAMEs in Cow's Milk on SLB®-IL111

column SLB-IL111, 100 m x 0.25 mm I.D., 0.20 µm (29647-U) oven 50 ºC (4 min), 8 ºC/min to 160 °C (25 min), 4 ºC/min to 220 ºC carrier gas hydrogen, 40 cm/sec sample FAMEs from 100 mg cow milk transesterified in sodium methoxide/methanol + boron trifluoride injection 0.2 µL10:1 split inj. temp. 230 °...

LC/MS Analysis of Aflatoxin M1 in Milk on Ascentis® Express HILIC after SPE using Supel™ Tox AflaZea, Quantifying Picogram Concentrations

sample preparation SPE (Solid Phase Extraction) sample preparation reconstitut in 500 µL 20:80 acetonitrile:water, filter into 750 µL poly vial using PVDF filter, 0.2 µm sample/matrix cow milk extraction process centrifuge 45 g liquid milk for 60 min at 5000 rpm (RCF 4863 xg), cool at 0 °C for 30 mi...

HPLC Analysis of Bisphenol A in Milk Powder on Chromolith® High Resolution RP-18e

Sample Prep Method filter description Millex® Samplicity filters, 0.20 µm, hydrophilic, PTFE; Bold blue Samplicity system bundle with 0.2 µm PTFE Millex® Samplicity filters Primary Analytical Method instrument Hitachi Chromaster-5440 Fluorescence Detector column Chromolith High Resolution RP-18 endc...